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1
CY7C261 CY7C263/CY7C264
8K x 8 Power-Switched and Reprogrammable PROM
Features
* CMOS for optimum speed/power * Windowed for reprogrammability * High speed -- 20 ns (commercial) -- 25 ns (military) * Low power -- 660 mW (commercial) -- 770 mW (military) * Super low standby power (7C261) -- Less than 220 mW when deselected * * * * -- Fast access: 20 ns EPROM technology 100% programmable Slim 300-mil or standard 600-mil packaging available 5V 10% VCC, commercial and military Capable of withstanding greater than 2001V static discharge * TTL-compatible I/O * Direct replacement for bipolar PROMs
Functional Description
The CY7C261, CY7C263, and CY7C264 are high-performance 8192-word by 8-bit CMOS PROMs. When deselected, the 7C261 automatically powers down into a low-power standby mode. It is packaged in a 300-mil-wide package. The 7C263 and 7C264 are packaged in 300-mil-wide and 600-mil-wide packages respectively, and do not power down when deselected. The reprogrammable packages are equipped with an erasure window; when exposed to UV light, these PROMs are erased and can then be reprogrammed. The memory cells utilize proven EPROM floating-gate technology and byte-wide intelligent programming algorithms. The CY7C261, CY7C263, and CY7C264 are plug-in replacements for bipolar devices and offer the advantages of lower power, superior performance and programming yield. The EPROM cell requires only 12.5V for the supervoltage and low current requirements allow for gang programming. The EPROM cells allow for each memory location to be tested 100%, as each location is written into, erased, and repeatedly exercised prior to encapsulation. Each PROM is also tested for AC performance to guarantee that after customer programming the product will meet DC and AC specification limits. Read is accomplished by placing an active LOW signal on CS. The contents of the memory location addressed by the address line (A0-A12) will become available on the output lines (O0-O7).
Logic Block Diagram
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 O1 POWER DOWN (7C261) COLUMN ADDRESS O3 ADDRESS DECODER O4 O5 ROW ADDRESS PROGRAM- MABLE ARRAY COLUMN MULTI- PLEXER O7
Pin Configurations
DIP/Flatpack Top View
A7 A6 A5 A4 A3 A2 A1 A0 O0 O1 O2 GND 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 7C261 17 7C263 9 7C264 16 10 15 11 14 12 13 VCC A8 A9 A10 CS A11 A12 O7 O6 O5 O4 O3
O6
LCC/PLCC (OpaqueOnly) Top View
4 3 2 1 28 27 26 25 5 24 6 23 7C261 7 22 8 7C263 21 9 20 10 19 11 12 1314151617 18
A4 A3 A2 A1 A0 NC O0
A10 CS A11 A12 NC O7 O6
O2
C261-2
C261-3
O0
CS C261-1
For an 8K x 8 Registered PROM, see theCY7C265.
Cypress Semiconductor Corporation
*
3901 North First Street
*
San Jose * CA 95134 * 408-943-2600 March 1986 - Revised December 1994
CY7C261 CY7C263/CY7C264
Selection Guide
7C261-20 7C263-20 7C264-20 Maximum Access Time (ns) Maximum Operating Current (mA) Maximum Standby Current (mA) (7C261 only) Commercial Military Commercial Military 40 20 120 7C261-25 7C263-25 7C264-25 25 120 140 40 40 7C261-35 7C263-35 7C264-35 35 100 120 30 30 7C261-45 7C263-45 7C264-45 45 100 120 30 30 7C261-55 7C263-55 7C264-55 55 100 120 30 30
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperaturesy................................-65C to+150C Ambient Temperature with Power Applied..............................................-55C to+125C Supply Voltage to Ground Potential (Pin 24 to Pin 12) ............................................ -0.5V to+7.0V DC Voltage Applied to Outputs in High Z State ................................................ -0.5V to+7.0V DC Input Voltage........................................... -3.0V to + 7.0V DC Program Voltage (Pin 19 DIP, Pin 23 LCC) ..............................................13.0V Static Discharge Voltage............................................>2001V (per MIL-STD-883, Method 3015)
]]
Latch-Up Current ..................................................... >200 mA UV Exposure ................................................ 7258 Wsec/cm 2
Operating Range
Range Commercial Industrial[1] Military[2] Ambient Temperature 0C to + 70C -40C to + 85C -55C to + 125C VCC 5V 10% 5V 10% 5V 10%
Notes: 1. See the Ordering Information section regarding industrial teperature range specifcation. 2. TA is the "instant on" case temperature.
2
CY7C261 CY7C263/CY7C264
Electrical Characteristics Over the Operating Range[3,4]
7C261-20, 25 7C263-20, 25 7C264-20, 25 Parameter VOH VOH VOL VOL VIH VIL IIX VCD IOZ IOS ICC Description Output HIGH Voltage Output HIGH Voltage Output LOW Voltage Output LOW Voltage Input HIGH Level Input LOW Level Input Current Input Diode Clamp Voltage Output Leakage Current Output Short Circuit Current[5] Power Supply Current GND VCC = Max., VOUT = GND VCC = Max., f = Max. IOUT= 0 mA VCC = Max., CS > VIH
ISB VPP IPP VIHP VILP
Standby Supply Current (7C261) Programming Supply Voltage Programming Supply Current Input HIGH Programming Voltage Input LOW Programming Voltage
Notes: 3. See the last page of this specification for Group A subgroup testing information. 4. See the "Introduction to CMOS PROMs" section of the Cypress Data Book for general information on testing. 5. For test purposes, not more than one output at a time should be shorted. Short circuit test duration should not exceed 30 seconds.]
Capacitance[4]
Parameter CIN COUT Description Input Capacitance Output Capacitance Test Conditions TA = 25C, f = 1 MHz, VCC = 5.0V Max. 10 10 Unit pF pF
3
CY7C261 CY7C263/CY7C264
AC Test Loads and Waveforms[4]
Test Load for -20 through -30 speeds
R1 500 (658 MIL) 5V OUTPUT 30 pF INCLUDING JIG AND SCOPE 5V OUTPUT R2 333 (403 MIL) 5 pF INCLUDING JIG AND SCOPE R2 333 (403 MIL) R1 500 (658 MIL) 3.0V GND 5 ns 90% 10% 90% 10% 5 ns
C261-4
C261-5
(a) Normal Load
Equivalent to:
(b) High Z Load
THEVENIN EQUIVALENT RTH 200 (250 MIL) OUTPUT 2.0V(1.9VMIL)
Test Load for -35 through -55 speeds
R1250 5V OUTPUT 30pF INCLUDING JIG AND SCOPE 5V OUTPUT R2167 5 pF INCLUDING JIG AND SCOPE R2167 R1 250
(c) Normal Load
Equivalent to: THE VENIN EQUIVALENT RTH 100 2.0V
(d) High Z Load
C261-6
OUTPUT
Switching Characteristics Over the Operating Range [2,3,4]
7C261-20 7C263-20 7C264-20 Parameter tAA tHZCS1 tHZCS2 tACS1 tACS2 tPU tPD Description Address to Output Valid Chip Select Inactive to High Z (7C263 and 7C264) Chip Select Inactive to High Z (7C261) Chip Select Active to Output Valid (7C263 and 7C264) Chip Select Active to Output Valid (7C261) Chip Select Active to Power-Up (7C261) Chip Select Inactive to Power-Down (7C261) 0 20 Min. Max. 20 12 20 12 20 0 25 7C261-25 7C263-25 7C264-25 Min. Max. 25 12 25 12 25 0 35 7C261-35 7C263-35 7C264-35 Min. Max. 35 20 35 20 35 0 45 7C261-45 7C263-45 7C264-45 Min. Max. 45 30 45 30 45 0 55 7C261-55 7C263-55 7C264-55 Min. Max. 55 35 55 35 55 Unit ns ns ns ns ns ns ns
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CY7C261 CY7C263/CY7C264
Switching Waveforms [4]
tPD 50% tPU 50%
VCC SUPPLY CURRENT A0 - A12 ADDRESS
CS tAA O0 - O7
C261-7
tHZCS
tACS
Erasure Characteristics
Wavelengths of light less than 4000 angstroms begin to erase the devices in the windowed package. For this reason, an opaque label should be placed over the window if the PROM is exposed to sunlight or fluorescent lighting for extended periods of time. The recommended dose of ultraviolet light for erasure is a wavelength of 2537 angstroms for a minimum dose (UV intensity multiplied by exposure time) of 25 Wsec/cm2. For an ultraviolet lamp with a 12 mW/cm2 power rating, the exposure time wouldbe approximately 35 minutes. The 7C261 or 7C263 needs to be within 1 inch of the lamp during erasure. Permanent damage may result if the PROM is exposed to high-intensity UV light for an extended period of time. 7258 Wsec/cm 2 is the recommended maximum dosage.
Operating Modes
Read Read is the normal operating mode for programmed device. In this mode, all signals are normal TTL levels. The PROM is addressed with a 13-bit field, a chip select, (active LOW), is applied to the CS pin, and the contents of the addressed location appear on the data out pins. Program, Program Inhibit, Program Verify These modes are entered by placing a high voltage VPP on pin 19, with pins 18 and 20 set to VILP. In this state, pin 21 becomes a latch signal, allowing the upper 5 address bits to be latched into an onboard register, pin 22 becomes an active LOW program (PGM) signal and pin 23 becomes an active LOW verify (VFY) signal. Pins 22 and 23 should never be active LOW at the same time. The PROGRAM mode exists when PGM is LOW, and VFY is HIGH. The verify mode exists when the reverse is true, PGM HIGH and VFY LOW and the program inhibit mode is entered with both PGM and VFY HIGH. Program inhibit is specifically provided to allow data to be placed on and removed from the data pins without conflict
Table 1. Mode Selection Pin Function[6, 7] Read or Output Disable Mode Read Output Disable Program Program Inhibit Program Verify Blank Check Program A12 NA A12 A12 VILP VILP VILP VILP A11 VPP A11 A11 VPP VPP VPP VPP A10 LATCH A10 A10 VILP VILP VILP VILP A9 PGM A9 A9 VILP VIHP VIHP VIHP A8 VFY A8 A8 VIHP VIHP VILP VILP CS CS VIL VIH VILP VILP VILP VILP O7 - O 0 D7 - D0 O7 - O0 High Z D7 - D0 High Z O7 - O0 O7 - O0
Notes: 6. X = "don't care" but not to exceed V CC 5%. 7. Addresses A8-A12 must be latched through lines A0-A4 in programming modes.
5
CY7C261 CY7C263/CY7C264
DIP/Flatpack Top View
A7 A6 A5 A /A 4 12 A 3/ A 11 A2/A10 A1/A9 A0/A8 D0 D1 D2 GND 1 2 3 4 5 6 7 8 24 23 22 21 20 19 18 VCC VFY PGM LATCH CS VPP NA D7 D6 D5 D4 D3
C261-8 C261-9
LCC/PLCC (Opaque only) Top View
7C261 17 9 7C263 16 10 7C264 15 11 12 14 13
A4/A12 A3/A11 A2/A10 A1/A9 A0/A8 NC D0
4 3 2 1 28 27 26 25 5 24 6 7C261 23 7 22 8 21 9 7C263 20 10 19 11 12 13 14 15 16 17 18
LATCH CS VPP NA NC D7 D6
Figure 1. Programming Pinouts.
Programming Information
Programming support is available from Cypress as well as from a number of third-party software vendors. For detailed programming information, including a listing of software packages, please see the PROM Programming Information located at the end of this section. Programming algorithms can be obtained from any Cypress representative.
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CY7C261 CY7C263/CY7C264
Typical DC and AC Characteristics
NORMALIZED SUPPLY CURRENT vs. SUPPLY VOLTAGE 1.6 1.4 1.1 1.2 1.0 1.0 0.8 0.6 4.0 TA = 25C f = f MAX 4.5 5.0 5.5 6.0 0.9 0.6 TA = 25C 0.8 -55 25 125 0.4 4.0 4.5 5.0 5.5 6.0 0.8 1.0 1.2 NORMALIZED SUPPLY CURRENT vs. AMBIENT TEMPERATURE 1.2 NORMALI ZED ACCESS TIME vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE(V)
AMBIENT TEMPERATURE(C)
SUPPLY VOLTAGE(V)
NORMALIZED ACCESS TIME vs. TEMPERATURE 1.6 1.4 40 1.2 30 1.0 0.8 0.6 - 55 60 50
OUTPUT SOURCE CURRENT vs. VOLTAGE 35 30 25 20 15 20 10 0 0 1.0 2.0 3.0 4.0 10 5 0
TYPICAL ACCESS TIME CHANGE vs. OUTPUT LOADING
VCC = 4.5V TA = 25C 0 200 400 600 800 1000
25
125
AMBIENT TEMPERATURE(C)
OUTPUT VOLTAGE(V)
CAPACITANCE(pF)
OUTPUT SINK CURRENT vs. OUTPUT VOLTAGE 175 150 125 100 75 50 25 0 0.0 1.0 2.0 3.0 4.0 VCC = 5.0V TA = 25C 1.05 1.00 0.95 0.90 0.85 0.80 0.75 0.70
NORMALIZED SUPPLY CURRENT vs. CYCLE PERIOD
VCC = 5.5V TA = 25C
0
25
50
75
100
OUTPUT VOLTAGE(V)
CYCLE PERIOD(ns)
]
7
CY7C261 CY7C263/CY7C264
Ordering Information[8]
Speed (ns) 20 Ordering Code CY7C261-20JC CY7C261-20PC CY7C261-20WC 25 CY7C261-25JC CY7C261-25PC CY7C261-25WC CY7C261-25DMB CY7C261-25LMB CY7C261-25QMB CY7C261-25TMB CY7C261-25WMB 35 CY7C261-35JC CY7C261-35PC CY7C261-35WC CY7C261-35DMB CY7C261-35LMB CY7C261-35QMB CY7C261-35TMB CY7C261-35WMB 45 CY7C261-45JC CY7C261-45PC CY7C261-45WC CY7C261-45DMB CY7C261-45LMB CY7C261-45QMB CY7C261-45TMB CY7C261-45WMB 55 CY7C261-55JC CY7C261-55PC CY7C261-55WC CY7C261-55DMB CY7C261-55LMB CY7C261-55QMB CY7C261-55TMB CY7C261-55WMB Package Name J64 P13 W14 J64 P13 W14 D14 L64 Q64 T73 W14 J64 P13 W14 D14 L64 Q64 T73 W14 J64 P13 W14 D14 L64 Q64 T73 W14 J64 P13 W14 D14 L64 Q64 T73 W14 Package Type 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP 24-Lead (300-Mil) CerDIP 28-Square Leadless Chip Carrier 28-Pin Windowed Leadless Chip Carrier 24-Lead Windowed Cerpack 24-Lead (300-Mil) Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP 24-Lead (300-Mil) CerDIP 28-Square Leadless Chip Carrier 28-Pin Windowed Leadless Chip Carrier 24-Lead Windowed Cerpack 24-Lead (300-Mil) Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP 24-Lead (300-Mil) CerDIP 28-Square Leadless Chip Carrier 28-Pin Windowed Leadless Chip Carrier 24-Lead Windowed Cerpack 24-Lead (300-Mil) Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP 24-Lead (300-Mil) CerDIP 28-Square Leadless Chip Carrier 28-Pin Windowed Leadless Chip Carrier 24-Lead Windowed Cerpack 24-Lead (300-Mil) Windowed CerDIP Military Commercial Military Commercial Military Commercial Military Commercial Operating Range Commercial
Note: 8. Most of these products are available in industrial temperature range. Contact a Cypress representative for specifications and product availability.
8
CY7C261 CY7C263/CY7C264
Ordering Information[8] (continued)
Speed (ns) 20 Ordering Code CY7C263-20JC CY7C263-20PC CY7C263-20WC 25 CY7C263-25JC CY7C263-25PC CY7C263-25WC CY7C263-25DMB CY7C263-25LMB CY7C263-25QMB CY7C263-25TMB CY7C263-25WMB 35 CY7C263-35JC CY7C263-35PC CY7C263-35WC CY7C263-35DMB CY7C263-35LMB CY7C263-35QMB CY7C263-35TMB CY7C263-35WMB 45 CY7C263-45JC CY7C263-45PC CY7C263-45WC CY7C263-45DMB CY7C263-45LMB CY7C263-45QMB CY7C263-45TMB CY7C263-45WMB 55 CY7C263-55JC CY7C263-55PC CY7C263-55WC CY7C263-55DMB CY7C263-55LMB CY7C263-55QMB CY7C263-55TMB CY7C263-55WMB Package Name J64 P13 W14 J64 P13 W14 D14 L64 Q64 T73 W14 J64 P13 W14 D14 L64 Q64 T73 W14 J64 P13 W14 D14 L64 Q64 T73 W14 J64 P13 W14 D14 L64 Q64 T73 W14 Package Type 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP 24-Lead (300-Mil) CerDIP 28-Square Leadless Chip Carrier 28-Pin Windowed Leadless Chip Carrier 24-Lead Windowed Cerpack 24-Lead (300-Mil) Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP 24-Lead (300-Mil) CerDIP 28-Square Leadless Chip Carrier 28-Pin Windowed Leadless Chip Carrier 24-Lead Windowed Cerpack 24-Lead (300-Mil) Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP 24-Lead (300-Mil) CerDIP 28-Square Leadless Chip Carrier 28-Pin Windowed Leadless Chip Carrier 24-Lead Windowed Cerpack 24-Lead (300-Mil) Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead (300-Mil) Molded DIP 24-Lead (300-Mil) Windowed CerDIP 24-Lead (300-Mil) CerDIP 28-Square Leadless Chip Carrier 28-Pin Windowed Leadless Chip Carrier 24-Lead Windowed Cerpack 24-Lead (300-Mil) Windowed CerDIP Military Commercial Military Commercial Military Commercial Military Commercial Operating Range Commercial
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CY7C261 CY7C263/CY7C264
Ordering Information[8] (continued)
Speed (ns) 20 Ordering Code CY7C264-20DC CY7C264-20PC CY7C264-20WC 25 CY7C264-25DC CY7C264-25PC CY7C264-25WC CY7C264-25DMB CY7C264-25WMB 35 CY7C264-35DC CY7C264-35PC CY7C264-35WC CY7C264-35DMB CY7C264-35WMB 45 CY7C264-45DC CY7C264-45PC CY7C264-45WC CY7C264-45DMB CY7C264-45WMB 55 CY7C264-55DC CY7C264-55PC CY7C264-55WC CY7C264-55DMB CY7C264-55WMB Package Name D12 P11 W12 D12 P11 W12 D12 W12 D12 P11 W12 D12 W12 D12 P11 W12 D12 W12 D12 P11 W12 D12 W12 Package Type 24-Lead (600-Mil) CerDIP 24-Lead (600-Mil) Molded DIP 24-Lead (600-Mil) Windowed CerDIP 24-Lead (600-Mil) CerDIP 24-Lead (600-Mil) Molded DIP 24-Lead (600-Mil) Windowed CerDIP 24-Lead (600-Mil) CerDIP 24-Lead (600-Mil) Windowed CerDIP 24-Lead (600-Mil) CerDIP 24-Lead (600-Mil) Molded DIP 24-Lead (600-Mil) Windowed CerDIP 24-Lead (600-Mil) CerDIP 24-Lead (600-Mil) Windowed CerDIP 24-Lead (600-Mil) CerDIP 24-Lead (600-Mil) Molded DIP 24-Lead (600-Mil) Windowed CerDIP 24-Lead (600-Mil) CerDIP 24-Lead (600-Mil) Windowed CerDIP 24-Lead (600-Mil) CerDIP 24-Lead (600-Mil) Molded DIP 24-Lead (600-Mil) Windowed CerDIP 24-Lead (600-Mil) CerDIP 24-Lead (600-Mil) Windowed CerDIP Military Commercial Military Commercial Military Commercial Military Commercial Operating Range Commercial
MILITARY SPECIFICATION
Group A Subgroup Testing
DC Characteristics
Parameter VOH VOL VIH VIL IIX IOZ ICC ISB[9] Subgroups 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3
Switching Characteristics
Parameter tAA tACS1[10] tACS2
[9]
Subgroups 7, 8, 9, 10, 11 7, 8, 9, 10, 11 7, 8, 9, 10, 11
Notes: 9. 7C261 only. 10. 7C263 and 7C264 only.
Document #: 38-00005-J
10
CY7C261 CY7C263/CY7C264
Package Diagrams
24-Lead (600-Mil) CerDIP D12
MIL-STD-1835 D-3 Config. A
28-Lead Plastic Leaded Chip Carrier J64
24-Lead (300-Mil) CerDIP D14
MIL-STD-1835 D-9 Config. A
28-Square Leadless Chip Carrier L64
MIL-STD-1835 C-4
11
CY7C261 CY7C263/CY7C264
Package Diagrams (continued)
28-Pin Windowed Leadless ChipCarrier Q64
MIL-STD-1835 C-4
24-Lead (600-Mil) Molded DIP P11
12
CY7C261 CY7C263/CY7C264
Package Diagrams (continued)
24-Lead (300-Mil) Molded DIP P13/P13A
24-Lead Windowed Cerpack T73
13
CY7C261 CY7C263/CY7C264
Package Diagrams (continued)
24-Lead (600-Mil) WindowedCerDIP W12
MIL-STD-1835 D- 3 Config.A
24-Lead (300-Mil) Windowed CerDIP W14
MIL-STD-1835 D- 9 Config.A
)
(c) Cypress Semiconductor Corporation, 1996. 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 Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor 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 Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.

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