CAT28HT256

Fast Read Access Times: 200/250 ns
Low Power CMOS Dissipation:
        Active: 30 mA Max.
        Standby: 150 mA Max.
Simple Write Operation:
        On-Chip Address and Data Latches
        Self-Timed Write Cycle with Auto-Clear
Fast Write Cycle Time:
        10ms Max
CMOS and TTL Compatible I/O
Automatic Page Write Operation:
        1 to 64 Bytes in 10ms
        Page Load Timer
End of Write Detection:
        Toggle Bit
        DATA Polling
Hardware and Software Write Protection
100,000 Program/Erase Cycles
100 Year Data Retention

Temperature Under Bias .......................................... 55°C to +150°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 (T_a = 25°C)........................ 1.0W
Lead Soldering Temperature (10 secs) ....................................... 300°C
Output Short Circuit Current⁽²⁾ .................................................. 100 mA

The CAT28HT256 is a fast, low power, 5V-only CMOS parallel E²PROM 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 auto-clear 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 the self-timed write cycle. Additionally, the CAT28HT256 features hardware and software write protection as well as an internal Error Correction Code (ECC) for extremely high reliability.

The CAT28HT256 is manufactured using Catalyst's advanced CMOS floating gate technology. It is designed to endure 100,000 program/erase cycles and has a data retention of 100 years. The device is available in JEDEC approved 28-pin Ceramic DIP package.