28C256.pdf | | CAT28C256
256K-Bit Parallel EEPROM FEATURES
s Fast read access times: 120/150ns s Low power CMOS dissipation: s Hardware and software write protection s Automatic page write operation:
Active: 25 mA max Standby: 150 µA max
s Simple write operation:
1 to 64 bytes in 5ms Page load timer
s End of write detection:
On-chip address and data latches Self-timed write cycle with auto-clear
s Fast write cycle time:
Toggle bit DATA polling DATA
s 100,000 program/erase cycles s 100 year data retention s Commerical, industrial and automotive
5ms max
s CMOS and TTL compatible I/O
temperature ranges
DESCRIPTION
The CAT28C256 is a fast, low power, 5V-only CMOS parallel EEPROM organized as 32K x 8-bits. It requires a simple interface for in-system programming. On-chip address and data latches, self-timed write cycle with autoclear and VCC power up/down write protection eliminate additional timing and protection hardware. DATA Polling and Toggle status bits signal the start and end of th |