Advance Information
CAT25C64/128
64K/128K-Bit SPI Serial CMOS E2PROM FEATURES
s 5 MHz SPI Compatible s 1.8 to 6.0 Volt Operation s Hardware and Software Protection s Zero Standby Current s Low Power CMOS Technology s SPI Modes (0,0) s Commercial, Industrial and Automotive s 1,000,000 Program/Erase Cycles s 100 Year Data Retention s Self-Timed Write Cycle s 8-Pin DIP/SOIC, 16-Pin SOIC and 20-Pin TSSOP s 64-Byte Page Write Buffer s Block Write Protection
– Protect 1/4, 1/2 or all of E2PROM Array
Temperature Ranges
DESCRIPTION
The CAT25C64/128 is a 64K/128K-Bit SPI Serial CMOS E2PROM internally organized as 8Kx8/16Kx8 bits. Catalyst’s advanced CMOS Technology substantially reduces device power requirements. The CAT25C64/ 128 features a 64-byte page write buffer. The device operates via the SPI bus serial interface and is enabled though a Chip Select (CS). In addition to the Chip Select, the clock input (SCK), data in (SI) and data out (SO) are required to access the device. The HOLD pin may be used to suspend any serial communication without resetting the serial sequence. The CAT25C64/128 is designed with software and hardware write protection features including Block write protection. The device is available in 8-pin DIP, 8-pin SOIC, 16-pin SOIC and 20pin TSSOP packages.
PIN CONFIGURATION
SOIC Package (S)
CS SO WP VSS 1 2 3 4 8 7 6 5 VCC HOLD SCK SI
BLOCK DIAGRAM
1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC HOLD NC NC NC NC SCK SI
NC CS SO SO NC NC WP VSS NC NC
SOIC Package (S16) TSSOP Package (U20)
CS SO NC NC NC NC WP VSS
DIP Package (P)
CS SO WP VSS 1 2 3 4 8 7 6 5 VCC HOLD SCK SI
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
NC VCC HOLD HOLD NC NC SCK SI NC NC
SENSE AMPS SHIFT REGISTERS
WORD ADDRESS BUFFERS
COLUMN DECODERS
PIN FUNCTIONS Pin Name
SO SCK WP VCC VSS CS SI HOLD NC
SO SI
I/O CONTROL SPI CONTROL LOGIC BLOCK PROTECT LOGIC
CONTROL LOGIC
Function
Serial Data Output Serial Clock Write Protect +1.8V to +6.0V Power Supply Ground Chip Select Serial Data Input Suspends Serial Input No Connect
CS WP HOLD SCK
XDEC
E2PROM ARRAY
DATA IN STORAGE HIGH VOLTAGE/ TIMING CONTROL STATUS REGISTER
25C128 F02
© 1999 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice
1
Doc No. 25069-00 6/99 SPI-1
CAT25C64/128
Advance Information
ABSOLUTE MAXIMUM RATINGS*
Temperature Under Bias ................. –55°C to +125°C Storage Temperature ....................... –65°C to +150°C Voltage on any Pin with Respect to Ground(1) ............ –2.0V to +VCC +2.0V VCC with Respect to Ground ............... –2.0V to +7.0V Package Power Dissipation Capability (Ta = 25°C) ................................... 1.0W Lead Soldering Temperature (10 secs) ............ 300°C Output Short Circuit Current(2) ........................ 100 mA RELIABILITY CHARACTERISTICS Symbol NEND
(3)
*COMMENT
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.
Parameter Endurance Data Retention ESD Susceptibility Latch-Up
Min. 1,000,000 100 2000 100
Max.
Units Cycles/Byte Years Volts mA
Reference Test Method MIL-STD-883, Test Method 1033 MIL-STD-883, Test Method 1008 MIL-STD-883, Test Method 3015 JEDEC Standard 17
TDR(3) VZAP(3) ILTH(3)(4)
D.C. OPERATING CHARACTERISTICS VCC = +1.8V to +6.0V, unless otherwise specified. Limits Symbol ICC1 ICC2 ISB ILI ILO VIL(3) VIH(3) VOL1 VOH1 VOL2 VOH2 Parameter Power Supply Current (Operating Write) Power Supply Current (Operating Read) Power Supply Current (Standby) Input Leakage Current Output Leakage Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage Output Low Voltage Output High Voltage VCC-0.2 VCC - 0.8 0.2 -1 VCC x 0.7 Min. Typ. Max. 10 2 0 2 3 VCC x 0.3 VCC + 0.5 0.4 Units mA mA µA µA µA V V V V V V 4.5V≤VCC
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