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CY14B104LA, CY14B104NA
4 Mbit (512K x 8/256K x 16) nvSRAM
Features

Functional Description
The Cypress CY14B104LA/CY14B104NA is a fast static RAM, with a nonvolatile element in each memory cell. The memory is organized as 512K bytes of 8 bits each or 256K words of 16 bits each. The embedded nonvolatile elements incorporate QuantumTrap technology, producing the world's most reliable nonvolatile memory. The SRAM provides infinite read and write cycles, while independent nonvolatile data resides in the highly reliable QuantumTrap cell. Data transfers from the SRAM to the nonvolatile elements (the STORE operation) takes place automatically at power down. On power up, data is restored to the SRAM (the RECALL operation) from the nonvolatile memory. Both the STORE and RECALL operations are also available under software control.
20 ns, 25 ns, and 45 ns Access Times Internally Organized as 512K x 8 (CY14B104LA) or 256K x 16 (CY14B104NA) Hands Off Automatic STORE on Power Down with only a Small Capacitor STORE to QuantumTrap Nonvolatile Elements Initiated by Software, Device Pin, or AutoStore on Power Down RECALL to SRAM Initiated by Software or Power Up Infinite Read, Write, and Recall Cycles 200,000 STORE Cycles to QuantumTrap 20 year Data Retention Single 3V +20%, -10% Operation Commercial and Industrial Temperatures 48-Ball FBGA and 44/54-Pin TSOP-II Packages Pb-free and RoHS Compliance
Logic Block Diagram[1, 2, 3]
Notes 1. Address A0 - A18 for x8 configuration and Address A0 - A17 for x16 configuration. 2. Data DQ0 - DQ7 for x8 configuration and Data DQ0 - DQ15 for x16 configuration. 3. BHE and BLE are applicable for x16 configuration only.
Cypress Semiconductor Corporation Document #: 001-49918 Rev. *B
*
198 Champion Court
*
San Jose, CA 95134-1709
* 408-943-2600 Revised May 22, 2009
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CY14B104LA, CY14B104NA
Pinouts
Figure 1. Pin Diagram - 48 FBGA (x8) Top View (not to scale)
1 NC NC DQ0 VSS VCC DQ3 2 OE NC NC DQ1 DQ2 NC 3 A0 A3 A5 A17 VCAP A14 A12 A9 4 A1 A4 A6 A7 A16 A15 A13 A10 5 A2 CE NC DQ5 DQ6 NC WE A11 6 NC NC DQ4 VCC VSS DQ7 NC NC
[4]
(x16) Top View (not to scale)
1
A B C D E F G H
2 OE BHE
3 A0 A3 A5 A17 VCAP A14 A12 A9
4 A1 A4 A6 A7 A16 A15 A13 A10
5 A2 CE DQ1 DQ3 DQ4 DQ5 WE A11
6 NC DQ0 DQ2 VCC VSS DQ6 DQ7
[5] NC
BLE DQ8
A B C D E F G H
DQ9 DQ10 VSS DQ11
VCC DQ12 DQ14 DQ13 DQ15 HSB NC
[4]
[5] HSB NC
A18
A8
A8
Figure 2. Pin Diagram - 44 Pin TSOP II (x8)
NC [5] NC A0 A1 A2 A3 A4 CE DQ0 DQ1 VCC VSS DQ2 DQ3 WE A5 A6 A7 A8 A9 NC NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 HSB NC [4] NC A18 A17 A16 A15 OE DQ7 DQ6 VSS VCC DQ5 DQ4 VCAP A14 A13 A12 A11 A10 NC NC
(x16)[6]
A0 A1 A2 A3 A4 CE DQ0 DQ1 DQ2 DQ3 VCC VSS DQ4 DQ5 DQ6 DQ7 WE A5 A6 A7 A8 A9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 A17 A16 A15 OE BHE BLE DQ15 DQ14 DQ13 DQ12 VSS VCC DQ11 DQ10 DQ9 DQ8 VCAP A14 A13 A12 A11 A10
44 - TSOP II
(x8)
44 - TSOP II
(x16)
Top View (not to scale)
Top View (not to scale)
Notes 4. Address expansion for 8 Mbit. NC pin not connected to die. 5. Address expansion for 16 Mbit. NC pin not connected to die. 6. HSB pin is not available in 44-TSOP II (x16) package.
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CY14B104LA, CY14B104NA
Pinouts
(continued) Figure 3. Pin Diagram - 54 Pin TSOP II (x16)
NC [5] NC A0 A1 A2 A3 A4 CE DQ0 DQ1 DQ2 DQ3 VCC VSS DQ4 DQ5 DQ6 DQ7 WE A5 A6 A7 A8 A9 NC NC NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 HSB NC [4] A17 A16 A15 OE BHE BLE DQ15 DQ14 DQ13 DQ12 VSS VCC DQ11 DQ10 DQ9 DQ8 VCAP A14 A13 A12 A11 A10 NC NC NC
54 - TSOP II
(x16)
Top View (not to scale)
Table 1. Pin Definitions Pin Name A0 - A18 A0 - A17 DQ0 - DQ7 DQ0 - DQ15 WE CE OE BHE BLE VSS VCC HSB
[6]
I/O Type Input
Description Address Inputs Used to Select One of the 524,288 bytes of the nvSRAM for x8 Configuration. Address Inputs Used to Select One of the 262,144 words of the nvSRAM for x16 Configuration.
Input/Output Bidirectional Data I/O Lines for x8 Configuration. Used as input or output lines depending on operation. Bidirectional Data I/O Lines for x16 Configuration. Used as input or output lines depending on operation. Input Input Input Input Input Ground Write Enable Input, Active LOW. When selected LOW, data on the I/O pins is written to the specific address location. Chip Enable Input, Active LOW. When LOW, selects the chip. When HIGH, deselects the chip. Output Enable, Active LOW. The active LOW OE input enables the data output buffers during read cycles. I/O pins are tristated on deasserting OE HIGH. Byte High Enable, Active LOW. Controls DQ15 - DQ8. Byte Low Enable, Active LOW. Controls DQ7 - DQ0. Ground for the Device. Must be connected to the ground of the system.
Power Supply Power Supply Inputs to the Device. Input/Output Hardware Store Busy (HSB). When LOW this output indicates that a hardware store is in progress. When pulled LOW external to the chip it initiates a nonvolatile STORE operation. A weak internal pull up resistor keeps this pin HIGH if not connected (connection optional). After each store operation HSB is driven HIGH for a short time with standard output high current. Power Supply AutoStore Capacitor. Supplies power to the nvSRAM during power loss to store data from SRAM to nonvolatile elements. No Connect No Connect. This pin is not connected to the die. Page 3 of 23
VCAP NC
Document #: 001-49918 Rev. *B
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CY14B104LA, CY14B104NA
Device Operation
The CY14B104LA/CY14B104NA nvSRAM is made up of two functional components paired in the same physical cell. They are a SRAM memory cell and a nonvolatile QuantumTrap cell. The SRAM memory cell operates as a standard fast static RAM. Data in the SRAM is transferred to the nonvolatile cell (the STORE operation), or from the nonvolatile cell to the SRAM (the RECALL operation). Using this unique architecture, all cells are stored and recalled in parallel. During the STORE and RECALL operations, SRAM read and write operations are inhibited. The CY14B104LA/CY14B104NA supports infinite reads and writes similar to a typical SRAM. In addition, it provides infinite RECALL operations from the nonvolatile cells and up to 200K STORE operations. See the Truth Table For SRAM Operations on page 16 for a complete description of read and write modes. AutoStore on page 6. In case AutoStore is enabled without a capacitor on VCAP pin, the device will attempt an AutoStore operation without sufficient charge to complete the Store. This may corrupt the data stored in nvSRAM. Figure 4 shows the proper connection of the storage capacitor (VCAP) for automatic store operation. Refer to DC Electrical Characteristics on page 8 for the size of VCAP. The voltage on the VCAP pin is driven to VCC by a regulator on the chip. A pull up should be placed on WE to hold it inactive during power up. This pull up is effective only if the WE signal is tri-state during power up. Many MPUs tri-state their controls on power up. This should be verified when using the pull up. When the nvSRAM comes out of power-on-recall, the MPU must be active or the WE held inactive until the MPU comes out of reset. To reduce unnecessary nonvolatile stores, AutoStore and hardware store operations are ignored unless at least one write operation has taken place since the most recent STORE or RECALL cycle. Software initiated STORE cycles are performed regardless of whether a write operation has taken place. The HSB signal is monitored by the system to detect if an AutoStore cycle is in progress. Figure 4. AutoStore Mode
Vcc
SRAM Read
The CY14B104LA/CY14B104NA performs a read cycle when CE and OE are LOW and WE and HSB are HIGH. The address specified on pins A0-18 or A0-17 determines which of the 524,288 data bytes or 262,144 words of 16 bits each are accessed. Byte enables (BHE, BLE) determine which bytes are enabled to the output, in the case of 16-bit words. When the read is initiated by an address transition, the outputs are valid after a delay of tAA (read cycle 1). If the read is initiated by CE or OE, the outputs are valid at tACE or at tDOE, whichever is later (read cycle 2). The data output repeatedly responds to address changes within the tAA access time without the need for transitions on any control input pins. This remains valid until another address change or until CE or OE is brought HIGH, or WE or HSB is brought LOW.
0.1uF 10kOhm Vcc
SRAM Write
A write cycle is performed when CE and WE are LOW and HSB is HIGH. The address inputs must be stable before entering the write cycle and must remain stable until CE or WE goes HIGH at the end of the cycle. The data on the common I/O pins DQ0-15 are written into the memory if the data is valid tSD before the end of a WE controlled write or before the end of an CE controlled write. The Byte Enable inputs (BHE, BLE) determine which bytes are written, in the case of 16-bit words. It is recommended that OE be kept HIGH during the entire write cycle to avoid data bus contention on common I/O lines. If OE is left LOW, internal circuitry turns off the output buffers tHZWE after WE goes LOW.
WE
VCAP
VSS
VCAP
Hardware STORE Operation
The CY14B104LA/CY14B104NA provides the HSB[6] pin to control and acknowledge the STORE operations. Use the HSB pin to request a hardware STORE cycle. When the HSB pin is driven LOW, the CY14B104LA/CY14B104NA conditionally initiates a STORE operation after tDELAY. An actual STORE cycle only begins if a write to the SRAM has taken place since the last STORE or RECALL cycle. The HSB pin also acts as an open drain driver that is internally driven LOW to indicate a busy condition when the STORE (initiated by any means) is in progress. SRAM read and write operations that are in progress when HSB is driven LOW by any means are given time to complete before the STORE operation is initiated. After HSB goes LOW, the CY14B104LA/CY14B104NA continues SRAM operations for tDELAY. If a write is in progress when HSB is pulled LOW it is enabled a time, tDELAY to complete. However, any SRAM write cycles requested after HSB goes LOW are inhibited until HSB returns HIGH. In case the write latch is not set, HSB is not driven LOW by the CY14B104LA/CY14B104NA. But any SRAM read and write cycles are inhibited until HSB is returned HIGH by MPU or other external source. Page 4 of 23
AutoStore Operation
The CY14B104LA/CY14B104NA stores data to the nvSRAM using one of the following three storage operations: Hardware Store activated by HSB; Software Store activated by an address sequence; AutoStore on device power down. The AutoStore operation is a unique feature of QuantumTrap technology and is enabled by default on the CY14B104LA/CY14B104NA. During a normal operation, the device draws current from VCC to charge a capacitor connected to the VCAP pin. This stored charge is used by the chip to perform a single STORE operation. If the voltage on the VCC pin drops below VSWITCH, the part automatically disconnects the VCAP pin from VCC. A STORE operation is initiated with power provided by the VCAP capacitor. Note If the capacitor is not connected to VCAP pin, AutoStore must be disabled using the soft sequence specified in Preventing
Document #: 001-49918 Rev. *B
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CY14B104LA, CY14B104NA
During any STORE operation, regardless of how it is initiated, the CY14B104LA/CY14B104NA continues to drive the HSB pin LOW, releasing it only when the STORE is complete. When the STORE operation is completed, the CY14B104LA/CY14B104NA remains disabled until the HSB pin returns HIGH. Leave the HSB unconnected if it is not used. 1. Read Address 0x4E38 Valid READ 2. Read Address 0xB1C7 Valid READ 3. Read Address 0x83E0 Valid READ 4. Read Address 0x7C1F Valid READ 5. Read Address 0x703F Valid READ 6. Read Address 0x8FC0 Initiate STORE Cycle The software sequence may be clocked with CE controlled reads or OE controlled reads. After the sixth address in the sequence is entered, the STORE cycle commences and the chip is disabled. HSB is driven LOW. It is important to use read cycles and not write cycles in the sequence, although it is not necessary that OE be LOW for a valid sequence. After the tSTORE cycle time is fulfilled, the SRAM is activated again for the read and write operation.
Hardware RECALL (Power Up)
During power up or after any low power condition (VCC< VSWITCH), an internal RECALL request is latched. When VCC again exceeds the sense voltage of VSWITCH, a RECALL cycle is automatically initiated and takes tHRECALL to complete. During this time, HSB is driven LOW by the HSB driver.
Software STORE
Transfer data from the SRAM to the nonvolatile memory with a software address sequence. The CY14B104LA/CY14B104NA software STORE cycle is initiated by executing sequential CE controlled read cycles from six specific address locations in exact order. During the STORE cycle an erase of the previous nonvolatile data is first performed, followed by a program of the nonvolatile elements. After a STORE cycle is initiated, further input and output are disabled until the cycle is completed. Because a sequence of READs from specific addresses is used for STORE initiation, it is important that no other read or write accesses intervene in the sequence, or the sequence is aborted and no STORE or RECALL takes place. To initiate the software STORE cycle, the following read sequence must be performed.
Software RECALL
Transfer the data from the nonvolatile memory to the SRAM with a software address sequence. A software RECALL cycle is initiated with a sequence of read operations in a manner similar to the software STORE initiation. To initiate the RECALL cycle, the following sequence of CE controlled read operations must be performed. 1. Read Address 0x4E38 Valid READ 2. Read Address 0xB1C7 Valid READ 3. Read Address 0x83E0 Valid READ 4. Read Address 0x7C1F Valid READ 5. Read Address 0x703F Valid READ 6. Read Address 0x4C63 Initiate RECALL Cycle Internally, RECALL is a two step procedure. First, the SRAM data is cleared; then, the nonvolatile information is transferred into the SRAM cells. After the tRECALL cycle time, the SRAM is again ready for read and write operations. The RECALL operation does not alter the data in the nonvolatile elements.
Table 2. Mode Selection CE H L L L WE X H L H OE, BHE, BLE[3] X L X L A15 - A0[7] X X X 0x4E38 0xB1C7 0x83E0 0x7C1F 0x703F 0x8B45 Mode Not Selected Read SRAM Write SRAM Read SRAM Read SRAM Read SRAM Read SRAM Read SRAM AutoStore Disable I/O Output High Z Output Data Input Data Output Data Output Data Output Data Output Data Output Data Output Data Power Standby Active Active Active[8]
Notes 7. While there are 19 address lines on the CY14B104LA (18 address lines on the CY14B104NA), only the 13 address lines (A14 - A2) are used to control software modes. Rest of the address lines are don't care. 8. The six consecutive address locations must be in the order listed. WE must be HIGH during all six cycles to enable a nonvolatile cycle.
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CY14B104LA, CY14B104NA
Table 2. Mode Selection (continued) CE L WE H OE, BHE, BLE[3] L A15 - A0[7] 0x4E38 0xB1C7 0x83E0 0x7C1F 0x703F 0x4B46 0x4E38 0xB1C7 0x83E0 0x7C1F 0x703F 0x8FC0 0x4E38 0xB1C7 0x83E0 0x7C1F 0x703F 0x4C63 Mode Read SRAM Read SRAM Read SRAM Read SRAM Read SRAM AutoStore Enable Read SRAM Read SRAM Read SRAM Read SRAM Read SRAM Nonvolatile Store Read SRAM Read SRAM Read SRAM Read SRAM Read SRAM Nonvolatile Recall I/O Output Data Output Data Output Data Output Data Output Data Output Data Output Data Output Data Output Data Output Data Output Data Output High Z Output Data Output Data Output Data Output Data Output Data Output High Z Power Active[8]
L
H
L
Active ICC2[8]
L
H
L
Active[8]
Preventing AutoStore
The AutoStore function is disabled by initiating an AutoStore disable sequence. A sequence of read operations is performed in a manner similar to the software STORE initiation. To initiate the AutoStore disable sequence, the following sequence of CE controlled read operations must be performed: 1. Read address 0x4E38 Valid READ 2. Read address 0xB1C7 Valid READ 3. Read address 0x83E0 Valid READ 4. Read address 0x7C1F Valid READ 5. Read address 0x703F Valid READ 6. Read address 0x8B45 AutoStore Disable The AutoStore is re-enabled by initiating an AutoStore enable sequence. A sequence of read operations is performed in a manner similar to the software RECALL initiation. To initiate the AutoStore enable sequence, the following sequence of CE controlled read operations must be performed: 1. Read address 0x4E38 Valid READ 2. Read address 0xB1C7 Valid READ 3. Read address 0x83E0 Valid READ 4. Read address 0x7C1F Valid READ 5. Read address 0x703F Valid READ 6. Read address 0x4B46 AutoStore Enable If the AutoStore function is disabled or re-enabled, a manual STORE operation (hardware or software) must be issued to save the AutoStore state through subsequent power down cycles. The part comes from the factory with AutoStore enabled.
Data Protection
The CY14B104LA/CY14B104NA protects data from corruption during low voltage conditions by inhibiting all externally initiated STORE and write operations. The low voltage condition is detected when VCC < VSWITCH. If the CY14B104LA/CY14B104NA is in a write mode (both CE and WE are LOW) at power up, after a RECALL or STORE, the write is inhibited until the SRAM is enabled after tLZHSB (HSB to output active). This protects against inadvertent writes during power up or brown out conditions.
Noise Considerations
Refer to CY application note AN1064.
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CY14B104LA, CY14B104NA
Best Practices
nvSRAM products have been used effectively for over 15 years. While ease-of-use is one of the product's main system values, experience gained working with hundreds of applications has resulted in the following suggestions as best practices:

or more random bytes) as part of the final system manufacturing test to ensure these system routines work consistently. Power up boot firmware routines should rewrite the nvSRAM into the desired state (for example, autostore enabled). While the nvSRAM is shipped in a preset state, best practice is to again rewrite the nvSRAM into the desired state as a safeguard against events that might flip the bit inadvertently such as program bugs and incoming inspection routines. The VCAP value specified in this data sheet includes a minimum and a maximum value size. Best practice is to meet this requirement and not exceed the maximum VCAP value because the nvSRAM internal algorithm calculates VCAP charge and discharge time based on this max VCAP value. Customers that want to use a larger VCAP value to make sure there is extra store charge and store time should discuss their VCAP size selection with Cypress to understand any impact on the VCAP voltage level at the end of a tRECALL period.
The nonvolatile cells in this nvSRAM product are delivered from Cypress with 0x00 written in all cells. Incoming inspection routines at customer or contract manufacturer's sites sometimes reprogram these values. Final NV patterns are typically repeating patterns of AA, 55, 00, FF, A5, or 5A. End product's firmware should not assume an NV array is in a set programmed state. Routines that check memory content values to determine first time system configuration, cold or warm boot status, and so on should always program a unique NV pattern (that is, complex 4-byte pattern of 46 E6 49 53 hex
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Maximum Ratings
Exceeding maximum ratings may impair the useful life of the device. These user guidelines are not tested. Storage Temperature ..................................-65C to +150C Maximum Accumulated Storage Time At 150C Ambient Temperature..........................1000h At 85C Ambient Temperature.................... ..20 Years Ambient Temperature with Power Applied .............................................-55C to +150C Supply Voltage on VCC Relative to GND.......... -0.5V to 4.1V Voltage Applied to Outputs in High-Z State ...................................... -0.5V to VCC + 0.5V Input Voltage .......................................... -0.5V to Vcc + 0.5V Transient Voltage (<20 ns) on Any Pin to Ground Potential.................. -2.0V to VCC + 2.0V Package Power Dissipation Capability (TA = 25C) ....................................................1.0W Surface Mount Pb Soldering Temperature (3 Seconds)...........................................+260C DC Output Current (1 output at a time, 1s duration) ....15 mA Static Discharge Voltage ......................................... > 2001V (per MIL-STD-883, Method 3015) Latch Up Current................................................... > 200 mA
Operating Range
Range Commercial Industrial Ambient Temperature 0C to +70C -40C to +85C VCC 2.7V to 3.6V 2.7V to 3.6V
DC Electrical Characteristics
Over the Operating Range (VCC = 2.7V to 3.6V) Parameter Description Test Conditions Average VCC Current tRC = 20 ns ICC1 tRC = 25 ns tRC = 45 ns Values obtained without output loads (IOUT = 0 mA) ICC2 ICC3 ICC4 ISB IIX[10] Average VCC Current during STORE Average VCC Current at tRC= 200 ns, VCC (Typ), 25C Average VCAP Current during AutoStore Cycle VCC Standby Current Input Leakage Current (except HSB) Input Leakage Current (for HSB) Off-State Output Leakage Current Input HIGH Voltage Input LOW Voltage Output HIGH Voltage Output LOW Voltage Storage Capacitor Min Commercial Typ[9] Max 65 65 50 70 70 52 10 Unit mA mA mA mA mA mA mA mA
Industrial
All Inputs Don't Care, VCC = Max Average current for duration tSTORE All I/P cycling at CMOS levels. Values obtained without output loads (IOUT = 0 mA). All Inputs Don't Care, VCC = Max Average current for duration tSTORE CE > (VCC - 0.2V). VIN < 0.2V or > (VCC - 0.2V). Standby current level after nonvolatile cycle is complete. Inputs are static. f = 0 MHz. VCC = Max, VSS < VIN < VCC VCC = Max, VSS < VIN < VCC VCC = Max, VSS < VOUT < VCC, CE or OE > VIH or BHE/BLE > VIH or WE < VIL
35
5
mA
5
mA A A A V V V V F
-1
+1
-100 -1 2.0 Vss - 0.5 2.4 61 68
+1 +1 VCC + 0.5 0.8 0.4 180
IOZ VIH VIL VOH VOL VCAP
IOUT = -2 mA IOUT = 4 mA Between VCAP pin and VSS, 5V Rated
Notes 9. Typical values are at 25C, VCC= VCC (Typ) . Not 100% tested. 10. The HSB pin has IOUT = -2 uA for VOH of 2.4V when both active HIGH and LOW drivers are disabled. When they are enabled standard VOH and VOL are valid. This parameter is characterized but not tested.
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Data Retention and Endurance
Parameter DATAR NVC Data Retention Nonvolatile STORE Operation Description Min 20 200 Unit Years K
Capacitance
In the following table, the capacitance parameters are listed.[11] Parameter CIN COUT Description Input Capacitance Output Capacitance Test Conditions TA = 25C, f = 1 MHz, VCC = VCC (Typ) Max 7 7 Unit pF pF
Thermal Resistance
Parameter
In the following table, the thermal resistance parameters are listed. [11] Description Thermal Resistance (Junction to Ambient) Thermal Resistance (Junction to Case) Test Conditions Test conditions follow standard test methods and procedures for measuring thermal impedance, in accordance with EIA/JESD51. 48-FBGA 28.82 7.84 44-TSOP II 54-TSOP II 31.11 5.56 30.73 6.08 Unit C/W C/W
JA JC
Figure 5. AC Test Loads
3.0V OUTPUT 30 pF
577 R1 R2 789
3.0V OUTPUT 5 pF
577 R1
for tri-state specs
R2 789
AC Test Conditions
Input Pulse Levels ....................................................0V to 3V Input Rise and Fall Times (10% - 90%) ........................ <3 ns Input and Output Timing Reference Levels .................... 1.5V
Note 11. These parameters are guaranteedby design but not tested.
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AC Switching Characteristics
Parameters Cypress Parameters SRAM Read Cycle tACE tRC[12] tAA[13] tDOE tOHA[13] tLZCE[11, 14] tHZCE[11, 14] tLZOE[11, 14] tHZOE[11, 14] tPU[11] tPD[11] tDBE tLZBE[11] tHZBE[11] tWC tPWE tSCE tSD tHD tAW tSA tHA tHZWE[11, 14,15] tLZWE[11, 14] tBW tACS tRC tAA tOE tOH tLZ tHZ tOLZ tOHZ tPA tPS tWC tWP tCW tDW tDH tAW tAS tWR tWZ tOW Chip Enable Access Time Read Cycle Time Address Access Time Output Enable to Data Valid Output Hold After Address Change Chip Enable to Output Active Chip Disable to Output Inactive Output Enable to Output Active Output Disable to Output Inactive Chip Enable to Power Active Chip Disable to Power Standby Byte Enable to Data Valid Byte Enable to Output Active Byte Disable to Output Inactive Write Cycle Time Write Pulse Width Chip Enable To End of Write Data Setup to End of Write Data Hold After End of Write Address Setup to End of Write Address Setup to Start of Write Address Hold After End of Write Write Enable to Output Disable Output Active after End of Write Byte Enable to End of Write 3 15 20 15 15 8 0 15 0 0 8 3 20 0 8 25 20 20 10 0 20 0 0 10 3 30 0 20 10 0 10 45 30 30 15 0 30 0 0 15 0 8 0 25 12 0 15 3 3 8 0 10 0 45 20 20 20 10 3 3 10 0 15 20 25 25 12 3 3 15 25 45 45 20 45 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns Alt Parameters Description 20 ns Min Max 25 ns Min Max 45 ns Min Max Unit
SRAM Write Cycle
Switching Waveforms
Figure 6. SRAM Read Cycle #1: Address Controlled[12, 13, 16]
tRC
Address
Address Valid tAA
Data Output
Previous Data Valid tOHA
Output Data Valid
Notes 12. WE must be HIGH during SRAM read cycles. 13. Device is continuously selected with CE, OE and BHE / BLE LOW. 14. Measured 200 mV from steady state output voltage. 15. If WE is LOW when CE goes LOW, the outputs remain in the high impedance state. 16. HSB must remain HIGH during read and write cycles.
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Figure 7. SRAM Read Cycle #2: CE and OE Controlled[3, 12, 16]
Address
Address Valid tRC tACE tHZCE
CE tAA tLZCE OE tLZOE tDBE BHE, BLE tLZBE Data Output High Impedance tPU Standby Active Output Data Valid tPD tDOE tHZBE tHZOE
ICC
Figure 8. SRAM Write Cycle #1: WE Controlled[3, 15, 16, 17]
tWC Address Address Valid tSCE CE tBW BHE, BLE tAW tPWE WE tSA tSD Data Input tHZWE Data Output Previous Data tHD Input Data Valid tLZWE High Impedance tHA
Note 17. CE or WE must be >VIH during address transitions.
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CY14B104LA, CY14B104NA
Figure 9. SRAM Write Cycle #2: CE Controlled[3, 15, 16, 17]
tWC Address tSA CE tBW BHE, BLE tPWE WE tSD Data Input Data Output Input Data Valid High Impedance tHD Address Valid tSCE tHA
Figure 10. SRAM Write Cycle #3: BHE and BLE Controlled[3, 15, 16, 17]
tWC Address tSCE CE tSA BHE, BLE tAW tPWE WE tSD Data Input tHD Input Data Valid High Impedance Data Output tBW tHA Address Valid
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AutoStore/Power Up RECALL
Parameters tHRECALL [18] tSTORE [19] tDELAY [20] VSWITCH tVCCRISE[11] VHDIS[11] tLZHSB[11] tHHHD[11] Description Power Up RECALL Duration STORE Cycle Duration Time Allowed to Complete SRAM Cycle Low Voltage Trigger Level VCC Rise Time HSB Output Disable Voltage HSB To Output Active Time HSB High Active Time 20 ns Min Max 20 8 20 2.65 1.9 5 500 Min 25 ns Max 20 8 25 2.65 1.9 5 500 Min 45 ns Max 20 8 25 2.65 1.9 5 500 Unit ms ms ns V s V s ns
150
150
150
Switching Waveforms
VCC
Figure 11. AutoStore or Power Up RECALL[21]
VSWITCH VHDIS
19
VVCCRISE tHHHD HSB OUT
Note 19
tSTORE tHHHD
Note
tSTORE Note
22
tDELAY tLZHSB tDELAY tLZHSB
Autostore
POWERUP RECALL Read & Write Inhibited (RWI)
tHRECALL
tHRECALL
POWER-UP RECALL
Read & Write
BROWN OUT Autostore
POWER-UP RECALL
Read & Write
POWER DOWN Autostore
Notes 18. tHRECALL starts from the time VCC rises above VSWITCH. 19. If an SRAM write has not taken place since the last nonvolatile cycle, no AutoStore or Hardware Store takes place. 20. On a Hardware STORE, Software Store / Recall, AutoStore Enable / Disable and AutoStore initiation, SRAM operation continues to be enabled for time tDELAY. 21. Read and write cycles are ignored during STORE, RECALL, and while VCC is below VSWITCH. 22. HSB pin is driven HIGH to VCC only by internal 100 kOhm resistor, HSB driver is disabled.
Document #: 001-49918 Rev. *B
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CY14B104LA, CY14B104NA
Software Controlled STORE/RECALL Cycle
Parameters tRC tSA tCW tHA tRECALL Description STORE/RECALL Initiation Cycle Time Address Setup Time Clock Pulse Width Address Hold Time RECALL Duration
In the following table, the software controlled STORE and RECALL cycle parameters are listed.[23, 24] 20 ns Min Max 20 0 15 0 200 25 ns Min Max 25 0 20 0 200 45 ns Min Max 45 0 30 0 200 Unit ns ns ns ns s
Switching Waveforms
Figure 12. CE and OE Controlled Software STORE/RECALL Cycle[24]
tRC tRC Address #6 tCW tHA tHA t DELAY
Address tSA CE tSA OE
Address #1 tCW
tHA tHA tHHHD tLZHSB High Impedance tSTORE/tRECALL
HSB (STORE only) DQ (DATA)
tLZCE
tHZCE
RWI
Figure 13. AutoStore Enable/Disable Cycle
tRC Address tSA CE tSA Address #1 tCW tHA tHA tRC Address #6 tCW
tHA tHA
OE tLZCE DQ (DATA) tHZCE tSS tDELAY
Notes 23. The software sequence is clocked with CE controlled or OE controlled reads. 24. The six consecutive addresses must be read in the order listed in Table 2 on page 5. WE must be HIGH during all six consecutive cycles.
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CY14B104LA, CY14B104NA
Hardware STORE Cycle
Parameters tDHSB tPHSB tSS [25, 26] Description HSB To Output Active Time when write latch not set Hardware STORE Pulse Width Soft Sequence Processing Time 15 100 20 ns Min Max 20 15 100 Min 25 ns Max 25 15 100 Min 45 ns Max 25 Unit ns ns s
Switching Waveforms
Figure 14. Hardware STORE Cycle[19]
Write latch set
tPHSB HSB (IN) tSTORE tDELAY HSB (OUT) tLZHSB DQ (Data Out) RWI tHHHD
Write latch not set
tPHSB HSB (IN) HSB pin is driven high to VCC only by Internal 100kOhm resistor, HSB driver is disabled SRAM is disabled as long as HSB (IN) is driven low. tDELAY tDHSB tDHSB
HSB (OUT) RWI
Figure 15. Soft Sequence Processing[25, 26]
Soft Sequence Command Address Address #1 tSA Address #6 tCW tSS Soft Sequence Command Address #1 Address #6 tCW tSS
CE VCC
Notes 25. This is the amount of time it takes to take action on a soft sequence command. Vcc power must remain HIGH to effectively register command. 26. Commands such as STORE and RECALL lock out I/O until operation is complete which further increases this time. See the specific command.
Document #: 001-49918 Rev. *B
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CY14B104LA, CY14B104NA
Truth Table For SRAM Operations
HSB should remain HIGH for SRAM Operations.
For x8 Configuration
CE H L L L WE X H H L OE X L H X High Z Data Out (DQ0-DQ7); High Z Data in (DQ0-DQ7); Inputs/Outputs[2] Read Output Disabled Write Mode Deselect/Power down Active Active Active Power Standby
For x16 Configuration
CE H L L L L L L L L L L WE X X H H H H H H L L L OE X X L L L H H H X X X BHE[3] X H L H L L H L L H L BLE[3] X H L L H L L H L L H Inputs/Outputs[2] High-Z High-Z Data Out (DQ0-DQ15) Data Out (DQ0-DQ7); DQ8-DQ15 in High-Z Data Out (DQ8-DQ15); DQ0-DQ7 in High-Z High-Z High-Z High-Z Data In (DQ0-DQ15) Data In (DQ0-DQ7); DQ8-DQ15 in High-Z Data In (DQ8-DQ15); DQ0-DQ7 in High-Z Mode Deselect/Power down Output Disabled Read Read Read Output Disabled Output Disabled Output Disabled Write Write Write Active Active Active Active Active Active Active Active Active Active Power Standby
Document #: 001-49918 Rev. *B
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CY14B104LA, CY14B104NA
Ordering Information
Speed (ns) 20 Ordering Code CY14B104LA-ZS20XCT CY14B104LA-ZS20XC CY14B104LA-ZS20XIT CY14B104LA-ZS20XI CY14B104LA-BA20XCT CY14B104LA-BA20XC CY14B104LA-BA20XIT CY14B104LA-BA20XI CY14B104NA-ZS20XCT CY14B104NA-ZS20XC CY14B104NA-ZS20XIT CY14B104NA-ZS20XI CY14B104NA-BA20XCT CY14B104NA-BA20XC CY14B104NA-BA20XIT CY14B104NA-BA20XI CY14B104NA-ZSP20XCT CY14B104NA-ZSP20XC CY14B104NA-ZSP20XIT CY14B104NA-ZSP20XI 25 CY14B104LA-ZS25XCT CY14B104LA-ZS25XC CY14B104LA-ZS25XIT CY14B104LA-ZS25XI CY14B104LA-BA25XCT CY14B104LA-BA25XC CY14B104LA-BA25XIT CY14B104LA-BA25XI CY14B104NA-ZS25XCT CY14B104NA-ZS25XC CY14B104NA-ZS25XIT CY14B104NA-ZS25XI CY14B104NA-BA25XCT CY14B104NA-BA25XC CY14B104NA-BA25XIT CY14B104NA-BA25XI CY14B104NA-BA25I CY14B104NA-ZSP25XCT CY14B104NA-ZSP25XC CY14B104NA-ZSP25XIT CY14B104NA-ZSP25XI Package Diagram 51-85087 51-85087 51-85087 51-85087 51-85128 51-85128 51-85128 51-85128 51-85087 51-85087 51-85087 51-85087 51-85128 51-85128 51-85128 51-85128 51-85160 51-85160 51-85160 51-85160 51-85087 51-85087 51-85087 51-85087 51-85128 51-85128 51-85128 51-85128 51-85087 51-85087 51-85087 51-85087 51-85128 51-85128 51-85128 51-85128 51-85128 51-85160 51-85160 51-85160 51-85160 Package Type 44-pin TSOP II 44-pin TSOP II 44-pin TSOP II 44-pin TSOP II 48-ball FBGA 48-ball FBGA 48-ball FBGA 48-ball FBGA 44-pin TSOP II 44-pin TSOP II 44-pin TSOP II 44-pin TSOP II 48-ball FBGA 48-ball FBGA 48-ball FBGA 48-ball FBGA 54-pin TSOP II 54-pin TSOP II 54-pin TSOP II 54-pin TSOP II 44-pin TSOP II 44-pin TSOP II 44-pin TSOP II 44-pin TSOP II 48-ball FBGA 48-ball FBGA 48-ball FBGA 48-ball FBGA 44-pin TSOP II 44-pin TSOP II 44-pin TSOP II 44-pin TSOP II 48-ball FBGA 48-ball FBGA 48-ball FBGA 48-ball FBGA 48-ball FBGA 54-pin TSOP II 54-pin TSOP II 54-pin TSOP II 54-pin TSOP II Industrial Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial Operating Range Commercial
Document #: 001-49918 Rev. *B
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CY14B104LA, CY14B104NA
Ordering Information (continued)
Speed (ns) 45 Ordering Code CY14B104LA-ZS45XCT CY14B104LA-ZS45XC CY14B104LA-ZS45XIT CY14B104LA-ZS45XI CY14B104LA-BA45XCT CY14B104LA-BA45XC CY14B104LA-BA45XIT CY14B104LA-BA45XI CY14B104NA-ZS45XCT CY14B104NA-ZS45XC CY14B104NA-ZS45XIT CY14B104NA-ZS45XI CY14B104NA-BA45XCT CY14B104NA-BA45XC CY14B104NA-BA45XIT CY14B104NA-BA45XI CY14B104NA-ZSP45XCT CY14B104NA-ZSP45XC CY14B104NA-ZSP45XIT CY14B104NA-ZSP45XI Package Diagram 51-85087 51-85087 51-85087 51-85087 51-85128 51-85128 51-85128 51-85128 51-85087 51-85087 51-85087 51-85087 51-85128 51-85128 51-85128 51-85128 51-85160 51-85160 51-85160 51-85160 Package Type 44-pin TSOP II 44-pin TSOP II 44-pin TSOP II 44-pin TSOP II 48-ball FBGA 48-ball FBGA 48-ball FBGA 48-ball FBGA 44-pin TSOP II 44-pin TSOP II 44-pin TSOP II 44-pin TSOP II 48-ball FBGA 48-ball FBGA 48-ball FBGA 48-ball FBGA 54-pin TSOP II 54-pin TSOP II 54-pin TSOP II 54-pin TSOP II Industrial Commercial Industrial Commercial Industrial Commercial Industrial Commercial Industrial Operating Range Commercial
Document #: 001-49918 Rev. *B
Page 18 of 23
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CY14B104LA, CY14B104NA
Part Numbering Nomenclature
CY 14 B 104 L A -ZS P 20 X C T Option: T - Tape & Reel Blank - Std. X - Pb-Free Blank - SnPb P - 54 Pin Blank - 44 Pin/48 Ball Die Revision: Blank - No Rev A - 1st Rev
Temperature: C - Commercial (0 to 70C) I - Industrial (-40 to 85C)
Speed: 20 - 20 ns 25 - 25 ns 45 - 45 ns
Package: BA - 48 FBGA ZS - TSOP II Data Bus: L - x8 N - x16
Voltage: B - 3.0V NVSRAM 14 - Auto Store + Software Store + Hardware Store
Density: 104 - 4 Mb
Cypress
Document #: 001-49918 Rev. *B
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CY14B104LA, CY14B104NA
Package Diagrams
Figure 16. 44-Pin TSOP II (51-85087)
DIMENSION IN MM (INCH) MAX MIN.
22 1
PIN 1 I.D.
11.938 (0.470) 11.735 (0.462)
10.262 (0.404) 10.058 (0.396)
OR E KXA SG
23
44
EJECTOR PIN
TOP VIEW
BOTTOM VIEW
0.800 BSC (0.0315)
0.400(0.016) 0.300 (0.012)
BASE PLANE 0-5 0.10 (.004)
10.262 (0.404) 10.058 (0.396) 0.210 (0.0083) 0.120 (0.0047)
18.517 (0.729) 18.313 (0.721) 0.150 (0.0059) 0.050 (0.0020) 1.194 (0.047) 0.991 (0.039) SEATING PLANE
0.597 (0.0235) 0.406 (0.0160)
51-85087-*A
Document #: 001-49918 Rev. *B
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CY14B104LA, CY14B104NA
Package Diagrams
(continued) Figure 17. 48-Ball FBGA - 6 mm x 10 mm x 1.2 mm (51-85128)
TOP VIEW
BOTTOM VIEW A1 CORNER O0.05 M C O0.25 M C A B
A1 CORNER O0.300.05(48X) 1 2 3 4 5 6 6 5 4 3 2 1
A B C 10.000.10 10.000.10 0.75 5.25 D E F G H
A B C D E 2.625 F G H
A B 6.000.10
A
1.875 0.75 3.75
0.530.05
0.25 C
B 0.210.05 0.15 C 0.15(4X)
6.000.10
SEATING PLANE 0.36 C 1.20 MAX
51-85128-*D
Document #: 001-49918 Rev. *B
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CY14B104LA, CY14B104NA
Package Diagrams
(continued) Figure 18. 54-Pin TSOP II (51-85160)
51-85160-**
Document #: 001-49918 Rev. *B
Page 22 of 23
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CY14B104LA, CY14B104NA
Document History Page
Document Title: CY14B104LA, CY14B104NA 4 Mbit (512K x 8/256K x 16) nvSRAM Document Number: 001-49918 Rev. ** *A ECN No. 2606696 2672700 Orig. of Change GVCH/PYRS GVCH/PYRS Submission Date 11/13/08 03/12/09 New Data Sheet Added best practices Added CY14B104NA-BA25I part number Added footnote12 for HZ/LZ parameters Moved data sheet status from Preliminary to Final Updated AutoStore operation Updated ISB test condition Updated footnote 9 Referenced footnote 12 to VCCRISE, tHHHD and tLZHSB parameters Updated VHDIS parameter desription Updated figure 12 Description of Change
*B
2710274
GVCH/AESA
05/22/2009
Sales, Solutions, and Legal Information
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Cypress maintains a worldwide network of offices, solution centers, manufacturer's representatives, and distributors. To find the office closest to you, visit us at cypress.com/sales.
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(c) Cypress Semiconductor Corporation, 2008-2009. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign), United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without the express written permission of Cypress. Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress' product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Use may be limited by and subject to the applicable Cypress software license agreement.
Document #: 001-49918 Rev. *B
Revised May 22, 2009
Page 23 of 23
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