CAT28HT64

Advanced CAT28HT64 64K-Bit CMOS PARALLEL E2PROM FEATURES s Fast Read Access Times: Extended Temperature: 170˚C s Hardware and Software Write Protection s Automatic Page Write Operation: – 150/200ns s Low Power CMOS Dissipation: – Active: 25 mA Max. – Standby: 300 µA Max. s Simple Write Operation: – 1 to 32 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 s 100,000 Program/Erase Cycles s 100 Year Data Retention – 5ms Max. s CMOS and TTL Compatible I/O DESCRIPTION The CAT28HT64 is a fast, low power, 5V-only CMOS parallel E2PROM organized as 8K 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 CAT28HT64 features hardware and software write protection. The CAT28HT64 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 JEDECapproved 28-pin Ceramic DIP package. BLOCK DIAGRAM A5–A12 ADDR. BUFFER & LATCHES INADVERTENT WRITE PROTECTION ROW DECODER 8,192 x 8 E2PROM ARRAY 32 BYTE PAGE REGISTER VCC HIGH VOLTAGE GENE...