4K-Bit Secure Access Serial E2PROM
Preliminary
CAT33C704
4K-Bit Secure Access Serial E2PROM FEATURES
s Single 3V Supply s Password READ/WRITE Protection: ...
Description
Preliminary
CAT33C704
4K-Bit Secure Access Serial E2PROM FEATURES
s Single 3V Supply s Password READ/WRITE Protection: 1 to 8 Bytes s Memory Pointer WRITE Protection s Sequential READ Operation s 256 x16 or 512 x 8 Selectable Serial Memory s High Speed Synchronous Protocol s Operating Frequency: DC–1MHz s Low Power Consumption:
Active: 3 mA Standby: 250 µA
s 100,000 Program/Erase Cycles s 100 Year Data Retention s Commercial, Industrial and Automotive
Temperature Ranges
DESCRIPTION
The CAT33C704 is a 4K-bit Serial E2PROM that safeguards stored data from unauthorized access by use of a user selectable (1 to 8 byte) access code and a movable memory pointer. Two operating modes provide unprotected and password-protected operation allowing the user to configure the device as anything from a ROM to a fully protected no-access memory. The CAT33C704 uses a unique serial-byte synchronous communication protocol and has a Sequential Read feature where data can be sequentially clocked out of the memory array. The device is available in 8-pin DIP or 16-pin SOIC packages.
PIN CONFIGURATION
DIP Package (P)
CS CLK DI DO 1 2 3 4 8 7 6 5 VCC PE ERR GND
BLOCK DIAGRAM
SOIC Package (J)
1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 NC NC VCC PE ERR GND NC NC
5074 FHD F01
NC NC CS CLK DI DO NC NC
VCC GND
64-BIT ACCESS CODE & CONTROL BLOCK SERIAL COMMUNICATION BLOCK
DO CLK PE CS DI
4K-BIT EEPROM ARRAY R/W BUFFER ADDRESS DECODER
PIN FUNCTIONS
Pin Name CS DO(1) CLK DI(1) PE ERR VCC GND Function ...
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