DESCRIPTION
The CAT28F020 is a high speed 256K x 8-bit electrically erasable and reprogrammable Flash memory ideally suited for applications requiring in-system or after-sale code updates. Electrical erasure of the full memory contents is achieved typically within 0.5 second.

FEATURES
■ Fast read access time: 90/120 ns
■ Low power CMOS dissipation:
    – Active: 30 mA max (CMOS/TTL levels)
    – Standby: 1 mA max (TTL levels)
    – Standby: 100 µA max (CMOS levels)
■ High speed programming:
    – 10 µs per byte
    – 4 seconds typical chip program
■ 0.5 seconds typical chip-erase
■ 12.0V ± 5% programming and erase voltage
■ Commercial, industrial and automotive temperature ranges
■ Stop timer for program/erase
■ On-chip address and data latches
■ JEDEC standard pinouts:
    – 32-pin DIP
    – 32-pin PLCC
    – 32-pin TSOP (8 x 20)
■ 100,000 program/erase cycles
■ 10 year data retention
■ Electronic signature