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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
PRELIMINARY
March 1999
NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
General Description
The NM24Wxx devices are 2048/4096/8192/16,384 bits, respectively, of CMOS non-volatile electrically erasable memory. These devices conform to all specifications in the IIC 2-wire protocol and are designed to minimize device pin count, and simplify PC board layout requirements. The entire ememory can be disabled (Write Protected) by connecting the WP pin to VCC. The memory then becomes unalterable unless WP is switched to VSS. This communications protocol uses CLOCK (SCL) and DATA I/O (SDA) lines to synchronously clock data between the master (for example a microprocessor) and the slave EEPROM device(s). The Standard IIC protocol allows for a maximum of 16K of EEPROM memory which is supported by Fairchild's family in 2K, 4K, 8K, and 16K devices, allowing the user to configure the memory as the application requires with any combination of EEPROMs. Fairchild EEPROMs are designed and tested for applications requiring high endurance, high reliability and low power consumption.
Features
s Hardware Write Protect for entire memory s Low Power CMOS 200A active current typical 10A standby current typical 1A standby typical (L) 0.1A standby typical (LZ) s IIC Compatible interface -- Provides bidirectional data transfer protocol s Sixteen byte page write mode -- Minimizes total write time per byte s Self timed write cycle -- Typical write cycle time of 6ms s Endurance: 1,000,000 data changes s Data retention greater than 40 years s Packages available: 8-pin DIP, 8-pin SO, and 8-pin TSSOP s Available in three temperature ranges - Commercial: 0 to +70C - Extended (E): -40 to +85C - Automotive (V): -40 to +125C
Block Diagram
VCC VSS WP START CYCLE SDA START STOP LOGIC CONTROL LOGIC SLAVE ADDRESS REGISTER & COMPARATOR LOAD A2 A1 A0 WORD ADDRESS COUNTER INC 16/ 32/ 64/ 128/ E2PROM ARRAY H.V. GENERATION TIMING &CONTROL
SCL
XDEC
0/1/2/3 4 4
16
R/W
YDEC
Device Address Bits CK DIN
8 DOUT
DATA REGISTER
DS500074-1
(c) 1999 Fairchild Semiconductor Corporation NM24Wxx Rev. C.2
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
Connection Diagrams
Dual-In-Line Package (N), SO Package (M8), and TSSOP Package (MT8)
A0 A1 A2 VSS 1 2 8 7 VCC WP SCL SDA NC A1 A2 VSS 1 2 8 7 VCC WP SCL SDA NC NC A2 VSS 1 2 8 7 6 5 VCC WP SCL SDA NC NC NC VSS 1 2 8 7 6 5 VCC WP SCL SDA
NM24W02
3 4 6 5 3 4
NM24W04
6 5
NM24W08
3 4
NM24W16
3 4
DS500074-2
DS500074-3
DS500074-4
DS500074-18
Top View See Package Number N08E (N), M08A (M8), and MTC08 (MT8)
Pin Names
A0,A1,A2 VSS SDA SCL WP VCC NC Device Address Inputs Ground Data I/O Clock Input Write Protect Power Supply No Connect
Ordering Information NM 24 W XX LZ E XX
Package
Letter
N M8 MT8 None E V Blank L LZ 02 04 08 16 W Interface 24 NM
Description
8-Pin DIP 8-Pin SO8 8-Pin TSSOP 0 to 70C -40 to +85C -40C to +125C 4.5V to 5.5V 2.7V to 4.5V 2.7V to 4.5V and <1A Standby Current 2K 4K 8K 16K Total Array Write Protect IIC Fairchild Non-Volatile Memory
Temp. Range
Voltage Operating Range
Density
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NM24Wxx Rev. C.2
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
Product Specifications Absolute Maximum Ratings
Ambient Storage Temperature All Input or Output Voltages with Respect to Ground Lead Temperature (Soldering, 10 seconds) ESD Rating -65C to +150C 6.5V to -0.3V +300C 2000V min.
Operating Conditions
Ambient Operating Temperature NM24Wxx NM24WxxE NM24WxxV Positive Power Supply NM24Wxx NM24WxxL NM24WxxLZ 0C to +70C -40C to +85C -40C to +125C 4.5V to 5.5V 2.7V to 4.5V 2.7V to 4.5V
Standard VCC (4.5V to 5.5V) DC Electrical Characteristics
Symbol Parameter Test Conditions Min
ICCA ISB ILI ILO VIL VIH VOL Active Power Supply Current Standby Current Input Leakage Current Output Leakage Current Input Low Voltage Input High Voltage Output Low Voltage IOL = 3 mA fSCL = 100 kHz VIN = GND or VCC VIN = GND to VCC VOUT = GND to VCC -0.3 VCC x 0.7
Limits Typ (Note 1)
0.2 10 0.1 0.1
Units Max
1.0 50 1 1 VCC x 0.3 VCC + 0.5 0.4 mA A A A V V V
Low VCC (2.7V to 5.5V) DC Electrical Characteristics
Symbol Parameter Test Conditions Min
ICCA ISB ILI ILO VIL VIH VOL Active Power Supply Current Standby Current for L Standby Current for LZ Input Leakage Current Output Leakage Current Input Low Voltage Input High Voltage Output Low Voltage IOL = 3 mA fSCL = 100 kHz VIN = GND or VCC VIN = GND or VCC VIN = GND to VCC VOUT = GND to VCC -0.3 VCC x 0.7
Limits Typ (Note 1)
0.2 1 0.1 0.1 0.1
Units Max
1.0 10 1 1 1 VCC x 0.3 VCC + 0.5 0.4 mA A A A A V V V
Capacitance TA = +25C, f = 100/400 KHz, VCC = 5V (Note 2)
Symbol
CI/O CIN
Test
Input/Output Capacitance (SDA) Input Capacitance (A0, A1, A2, SCL)
Conditions
VI/O = 0V VIN = 0V
Max
8 6
Units
pF pF
Note 1: Typical values are TA = 25C and nominal supply voltage (5V). Note 2: This parameter is periodically sampled and not 100% tested.
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
AC Conditions of Test
Input Pulse Levels Input Rise and Fall Times Input & Output Timing Levels Output Load VCC x 0.1 to VCC x 0.9 10 ns VCC x 0.5 1 TTL Gate and CL = 100 pF
Read and Write Cycle Limits (Standard and Low VCC Range 2.7V - 4.5V)
Symbol
fSCL TI
Parameter
SCL Clock Frequency Noise Suppression Time Constant at SCL, SDA Inputs (Minimum VIN Pulse width) SCL Low to SDA Data Out Valid Time the Bus Must Be Free before a New Transmission Can Start Start Condition Hold Time Clock Low Period Clock High Period Start Condition Setup Time (for a Repeated Start Condition) Data in Hold Time Data in Setup Time SDA and SCL Rise Time SDA and SCL Fall Time Stop Condition Setup Time Data Out Hold Time Write Cycle Time - NM24Wxx - NM24WxxL, NM24WxxLZ
100 KHz Min Max
100 100 0.3 4.7 4.0 4.7 4.0 4.7 0 250 1 300 4.7 300 10 15 3.5
400 KHz Min Max
400 50 0.1 1.3 0.6 1.5 0.6 0.6 0 100 0.3 300 0.6 50 10 15 0.9
Units
KHz ns s s s s s s ns ns s ns s ns ms
tAA tBUF tHD:STA tLOW tHIGH tSU:STA tHD:DAT tSU:DAT tR tF tSU:STO tDH tWR (Note 3)
Note 3: The write cycle time (tWR) is the time from a valid stop condition of a write sequence to the end of the internal erase/program cycle. During the write cycle, the NM24Wxx bus interface circuits are disabled, SDA is allowed to remain high per the bus-level pull-up resistor, and the device does not respond to its slave address.
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
Bus Timing
tF tHIGH tLOW SCL tLOW tR
SDA
SDA
OUT
Background Information (IIC Bus)
As mentioned, the IIC bus allows synchronous bidirectional communication between Transmitter/Receiver using the SCL (clock) and SDA (Data I/O) lines. All communication must be started with a valid START condition, concluded with a STOP condition and acknowledged by the Receiver with an ACKNOWLEDGE condition. In addition, since the IIC bus is designed to support other devices such as RAM, EPROMs, etc., a devce type identifier string must follow the START condition. For EEPROMs, this 4-bit string is 1010 and is the first 4 bits in the slave address. As shown below, the EEPROMs on the IIC bus may be configured in any manner required, and for the Standard IIC protocol, the total memory addressed can not exceed 16K (16,384 bits). EEPROM memory address programming is controlled by 2 methods: * Hardware configuring the A0, A1, and A2 pins (Device Address pins) with pull-up or pull-down to resistors. All unused pins must be grounded (tied to VSS). * Software addressing the required PAGE BLOCK within the device memory array (as sent in the Slave Address string). Addressing an EEPROM memory location involves sending a command string with the following information: [DEVICE TYPE]--[DEVICE ADDRESS]--[PAGE BLOCK ADDRESS]--[BYTE ADDRESS]
,,
tSU:STA tHD:STA IN
tHD:DAT
tSU:DAT
tSU:STO
tBUF tDH
tAA
DS500074-5
DEFINITIONS
WORD PAGE 8 bits of data 16 sequential addresses (one byte each) that may be programmed during a 'Page Write' programming cycle 2,048 (2K) bits organized into 16 pages of addressable memory. (8 bits) x (16 bytes) x (16 pages) = 2,048 bits Any IIC device CONTROLLING the transfer of data (such as a microprocessor) Device being controlled (EEPROMs are always considered Slaves) Device currently SENDING data on the bus (may be either a Master or Slave). Device currently receiving data on the bus (Master or Slave)
PAGE BLOCK
MASTER
SLAVE TRANSMITTER
RECEIVER
Example of 16K of Memory on 2-Wire Bus
VCC VCC
SDA SCL
VCC VCC VCC VCC
NM24W02
A0 A1 A2 VSS
NM24W02
A0 A1 A2 VSS
NM24W04
A0 A1 A2 VSS
NM24W08
A0 A1 A2 VSS
To VCC or VSS
To VCC or VSS
To VCC or VSS
To VCC or VSS
DS500074-6
Note:
The SDA pull-up resistor is required due to the open-drain/open collector output of IIC bus devices. The SCL pull-up resistor is recommended because of the normal SCL line inactive 'high' state. It is recommended that the total line capacitance be less than 400pF. Specific timing and addressing considerations are described in greater detail in the following sections.
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
Device
NM24W02 NM24W04 NM24W08 NM24W16
Address Pins A0 A1 A2
ADR NC NC NC ADR ADR NC NC ADR ADR ADR NC
Memory Size
2048 Bits 4096 Bits 8192 Bits 16,384 Bits
Number of Page Blocks
1 2 4 8
ADR is the hardware address (VCC/1 or VSS/0) of the device(s) used.
Pin Descriptions
Serial Clock (SCL)
The SCL input is used to clock all data into and out of the device.
Clock and Data Conventions
Data states on the SDA line can change only during SCL LOW. SDA state changes during SCL HIGH are reserved for indicating start and stop conditions. Refer to Figures 1 and 2.
Serial Data (SDA)
SDA is a bidirectional pin used to transfer data into and out of the device. It is an open drain output and may be wire-ORed with any number of open drain or open collector outputs.
Start Condition
All commands are preceded by the start condition, which is a HIGH to LOW transition of SDA when SCL is HIGH. The NM24Wxx continuously monitors the SDA and SCL lines for the start condition and will not respond to any command until this condition has been met.
Device Operation Inputs (A0, A1, A2)
Device address pins A0, A1, and A2 are connected to VCC or VSS to configure the EEPROM chip address. Table 1 shows the active pins across the NM24Wxx device family.
Stop Condition
All communications are terminated by a stop condition, which is a LOW to HIGH transition of SDA when SCL is HIGH. The stop condition is also used by the NM24Wxx to place the device in the standby power mode.
TABLE 1.
Device NM24W04 NM24W08 NM24W16 A0 x x x A1 A2 Effects of Addresses NM24W02 ADR ADR ADR 23 = 8; 8*x(1x2K)**=16K ADR ADR 22 = 4; 4*x(2x2K)**=16K x x ADR 21 = 2; 2*x(4x2K)**=16K x 20 = 1; 1*x(8x2K)**=16K
ACKNOWLEDGE
Acknowledge is a software convention used to indicate successful data transfers. The transmitting device, either master or slave, will release the bus after transmitting eight bits. During the ninth clock cycle the receiver will pull the SDA line to LOW to acknowledge that it received the eight bits of data. Refer to Figure 3. The NM24Wxx device will always respond with an acknowledge after recognition of a start condition and its slave address. If both the device and a write operation have been selected, the NM24Wxx will respond with an acknowledge after the receipt of each subsequent eight bit byte. In the read mode the NM24Wxx slave will transmit eight bits of data, release the SDA line and monitor the line for an acknowledge. If an acknowledge is detected and no stop condition is generated by the master, the slave will continue to transmit data. If an acknowledge is not detected, the slave will terminate further data transmissions and await the stop condition to return to the standby power mode.
* Max # of devices on bus ** Number of page blocks per density
WP Write Protection
If tied to VCC, PROGRAM operations onto memory will not be executed. (Only READ operations are possible.) If tied to VSS, normal operation is enabled (READ/WRITE over the entire memory is possible).
Device Operation
The NM24Wxx supports a bidirectional bus oriented protocol. The protocol defines any device that sends data onto the bus as a transmitter and the receiving device as the receiver. The device controlling the transfer is the master and the device that is controlled is the slave. The master will always initiate data transfers and provide the clock for both transmit and receive operations. Therefore, the NM24Wxx will be considered a slave in all applications.
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
Write Cycle Timing
SCL
SDA
8th BIT WORD n
ACK tWR STOP CONDITION START CONDITION
DS500074-7
Data Validity (Figure 1)
SCL
DATA STABLE
DATA CHANGE
SDA
DS500074-8
Start and Stop Definition (Figure 2)
SCL START CONDITION SDA STOP CONDITION
DS500074-9
Acknowledge Responses from Receiver (Figure 3)
SCL FROM MASTER DATA OUTPUT FROM TRANSMITTER DATA OUTPUT FROM RECEIVER START
ACKNOWLEDGE
DS500074-10
1
8
9
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
Device Addressing
Following a start condition the master must output the address of the slave it is accessing. The most significant four bits of the slave address are those of the device type identifier (see Figure 4). This is fixed as 1010 for all EEPROM devices. All Standard IIC protocol EEPROMs use an internal protocol that defines a PAGE BLOCK size of 2K bits (for Byte addresses 00 through FF). Therefore, address bits A0, A1, or A2 (if designated 'P') are used to access a PAGE BLOCK in conjuction with the Byte address used to access any individual data byte. Refer to the following table for Slave Address string details:
Slave Addresses (Figure 4)
Device Type Identifier Device Address
Device
A0 R/W (LSB)
A0 A1 A2
A P P P A A P P A A A P
Page Blks
1 (2K) 2 (4K) 4 (8K)
Page Block Addresses
(None) 01 00 01 10 11
1
0
1
0
A2
A1
NM24W02 NM24W04
NM24W02 Device Type Identifier Device Address
NM24W08 NM24W16
8 (16K) 000 001 010 011 100 101 110 111
1
0
1
0
A2
A1
A0
R/W
(LSB)
Note:
A: Refers to a hardware configured Device Address pin. P: Refers to an internal PAGE BLOCK memory segment
NM24W04
Page Block Address Device Address
Device Type Identifier
The last bit of the slave address defines whether a write or read condition is requested by the master. A '1' indicates that a read operation is to be executed, and a '0' initiates the write mode. A simple review: After the NM24Wxx recognizes the start condition, the devices interfaced to the IIC bus wait for a slave address to be transmitted over the SDA line. If the transmitted slave address matches an address of one of the devices, the designated slave pulls the line LOW with an acknowledge signal and awaits further transmissions.
1
0
1
0
A2
A1
A0
R/W
(LSB)
NM24W08
Page Block Address
Device Type Identifier
1
0
1
0
A2
A1
A0
R/W
(LSB)
NM24W16
Page Block Address
DS500074-11
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
Write Operations
Byte Write
For a write operation a second address field is required which is a word address that is comprised of eight bits and provides access to any one of the 256 words in the selected page of memory. Upon receipt of the word address the NM24Wxx responds with an acknowledge and waits for the next eight bits of data, again, responding with an acknowledge. The master then terminates the transfer by generating a stop condition, at which time the NM24Wxx begins the internal write cycle to the nonvolatile memory. While the internal write cycle is in progress the NM24Wxx inputs are disabled, and the device will not respond to any requests from the master. Refer to Figure 5 for the address, acknowledge and data transfer sequence.
If the master should transmit more than sixteen words prior to generating the stop condition, the address counter will 'roll over' and the previously written data will be overwritten. As with the byte write operation, all inputs are disabled until completion of the internal write cycle. Refer to Figure 6 for the address, acknowledge, and data transfer sequence.
Acknowledge Polling
Once the stop condition is issued to indicate the end of the host's write operation the NM24Wxx initiates the internal write cycle. ACK polling can be initiated immediately. This involves issuing the start condition followed by the slave address for a write operation. If the NM24Wxx is still busy with the write operation no ACK will be returned. If the NM24Wxx has completed the write operation an ACK will be returned and the host can then proceed with the next read or write operation.
Page Write
The NM24Wxx is capable of a sixteen byte page write operation. It is initiated in the same manner as the byte write operation; but instead of terminating the write cycle after the first data word is transferred, the master can transmit up to fifteen more words. After the receipt of each word, the NM24Wxx will respond with an acknowledge. After the receipt of each word, the internal address counter increments to the next address and the next SDA data is accepted.
Write Protection
Programming of the memory will not take place if the WP pin of the NM24Wxx is connected to VCC. The NM24Wxx will accept slave and word addresses; but if the memory accessed is write protected by the WP pin, the NM24Wxx will not generate an acknowledge after the first byte of data has been received, and thus the program cycle will not be started when the stop condition is asserted.
Byte Write (Figure 5)
S T A R T S T O P
Bus Activity: Master SDA Line Bus Activity: NM24Wxx
SLAVE ADDRESS
WORD ADDRESS
DATA
A C K
A C K
A C K
DS500074-12
Page Write (Figure 6)
S T A R T SLAVE ADDRESS S T O P
Bus Activity: Master SDA Line Bus Activity: NM24Wxx
BYTE ADDRESS (n)
DATA n
DATA n + 1
DATA n + 15
A C K
A C K
A C K
A C K
A C K
DS500074-13
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
Read Operations
Read operations are initiated in the same manner as write operations, with the exception that the R/W bit of the slave address is set to a one. There are three basic read operations: current address read, random read, and sequential read. diately reissues the start condition and the slave address with the R/W bit set to one. This will be followed by an acknowledge from the NM24Wxx and then by the eight bit word. The master will not acknowledge the transfer but does generate the stop condition, and therefore the NM24Wxx discontinues transmission. Refer to Figure 8 for the address, acknowledge and data transfer sequence.
Current Address Read
Internally the NM24Wxx contains an address counter that maintains the address of the last word accessed, incremented by one. Therefore, if the last access (either a read or write) was to address n, the next read operation would access data from address n + 1. Upon receipt of the slave address with R/W set to one, the NM24Wxx issues an acknowledge and transmits the eight bit word. The master will not acknowledge the transfer but does generate a stop condition, and therefore the NM24Wxx discontinues transmission. Refer to Figure 7 for the sequence of address, acknowledge and data transfer.
Sequential Read
Sequential reads can be initiated as either a current address read or random access read. The first word is transmitted in the same manner as the other read modes; however, the master now responds with an acknowledge, indicating it requires additional data. The NM24Wxx continues to output data for each acknowledge received. The read operation is terminated by the master not responding with an acknowledge or by generating a stop condition. The data output is sequential, with the data from address n followed by the data from n + 1. The address counter for read operations increments all word address bits, allowing the entire memory contents to be serially read during one operation. After the entire memory has been read, the counter 'rolls over' and the NM24Wxx continues to output data for each acknowledge received. Refer to Figure 9 for the address, acknowledge, and data transfer sequence.
Random Read
Random read operations allow the master to access any memory location in a random manner. Prior to issuing the slave address with the R/W bit set to one, the master must first perform a "dummy" write operation. The master issues the start condition, slave address, R/W bit set to zero, and then the word address it is to read. After the word address acknowledge, the master imme-
Current Address Read (Figure 7)
S T A R T S T O P
Bus Activity: Master SDA Line
SLAVE ADDRESS
A C K
DATA
DS500074-14
Random Read (Figure 8)
S T A R T S T A R T S A C K A C K A C K DATA n
DS500074-15
Bus Activity: Master SDA Line
SLAVE ADDRESS
BYTE ADDRESS
SLAVE ADDRESS
S T O P
Sequential Read (Figure 9)
Bus Activity: SLAVE Master ADDRESS SDA Line A C K
DATA n DATA n +1 DATA n + 2 DATA n + x
DS500074-16
A C K
A C K
A C K
S T O P
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
Read Operations (Continued)
Typical System Configuration (Figure 11)
VCC
SDA SCL Master Transmitter/ Receiver Slave Receiver Slave Transmitter/ Receiver Master Transmitter Master Transmitter/ Receiver
DS500074-17
Note:
Due to open drain configuration of SDA, a bus-level resistor is called for (Typical value = 4.7)
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
Physical Dimensions inches (millimeters) unless otherwise noted
0.189 - 0.197 (4.800 - 5.004)
8765
0.228 - 0.244 (5.791 - 6.198)
1234
Lead #1 IDENT 0.150 - 0.157 (3.810 - 3.988) 8 Max, Typ. All leads 0.04 (0.102) All lead tips
0.010 - 0.020 x 45 (0.254 - 0.508)
0.053 - 0.069 (1.346 - 1.753)
0.004 - 0.010 (0.102 - 0.254) Seating Plane
0.0075 - 0.0098 (0.190 - 0.249) Typ. All Leads
0.016 - 0.050 (0.406 - 1.270) Typ. All Leads
0.014 (0.356) 0.050 (1.270) Typ 0.014 - 0.020 Typ. (0.356 - 0.508)
8-Pin Molded Small Outline Package (M8) Package Number M08A
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NM24Wxx Rev. C.2
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
Physical Dimensions inches (millimeters) unless otherwise noted
0.114 - 0.122 (2.90 - 3.10)
8
5
(4.16) Typ (7.72) Typ 0.169 - 0.177 (4.30 - 4.50) (1.78) Typ (0.42) Typ (0.65) Typ
0.246 - 0.256 (6.25 - 6.5)
0.123 - 0.128 (3.13 - 3.30)
1
4
Pin #1 IDENT
Land pattern recommendation
0.0433 Max (1.1) 0.002 - 0.006 (0.05 - 0.15) 0.0256 (0.65) Typ.
See detail A
0.0035 - 0.0079
0.0075 - 0.0098 (0.19 - 0.30)
0-8
Gage plane
DETAIL A Typ. Scale: 40X
0.020 - 0.028 (0.50 - 0.70) Seating plane
0.0075 - 0.0098 (0.19 - 0.25)
Notes: Unless otherwise specified 1. Reference JEDEC registration MO153. Variation AA. Dated 7/93
8-Pin Molded TSSOP, JEDEC Package Number MTC08
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NM24Wxx Rev. C.2
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NM24Wxx 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect
Physical Dimensions inches (millimeters) unless otherwise noted
0.373 - 0.400 (9.474 - 10.16) 0.090 (2.286) 0.092 DIA (2.337) Pin #1 IDENT Option 1 0.032 0.005 (0.813 0.127) RAD 0.250 - 0.005 (6.35 0.127) Pin #1 IDENT
8
7
8
+
7
6
5
1 1 2 3 4
0.039 (0.991) 0.130 0.005 (3.302 0.127) Option 2 0.145 - 0.200 (3.683 - 5.080) 0.040 Typ. (1.016)
0.280 MIN (7.112) 0.300 - 0.320 (7.62 - 8.128)
0.030 MAX (0.762) 20 1
95 5 0.009 - 0.015 (0.229 - 0.381) +0.040 0.325 -0.015 +1.016 8.255 -0.381 0.125 (3.175) DIA NOM
0.065 (1.651)
0.125 - 0.140 (3.175 - 3.556) 90 4 Typ 0.018 0.003 (0.457 0.076) 0.100 0.010 (2.540 0.254) 0.060 (1.524) 0.020 (0.508) Min
0.045 0.015 (1.143 0.381) 0.050 (1.270)
Molded Dual-In-Line Package (N) Package Number N08E
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2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
Fairchild Semiconductor Hong Kong 8/F, Room 808, Empire Centre 68 Mody Road, Tsimshatsui East Kowloon. Hong Kong Tel; +852-2722-8338 Fax: +852-2722-8383
Fairchild Semiconductor Japan Ltd. 4F, Natsume Bldg. 2-18-6, Yushima, Bunkyo-ku Tokyo, 113-0034 Japan Tel: 81-3-3818-8840 Fax: 81-3-3818-8841
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.
14
NM24Wxx Rev. C.2
www.fairchildsemi.com

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