GENERAL DESCRIPTION
The Am28F020 is a 2 Megabit Flash memory organized as 256 Kbytes of 8 bits each. AMD’s Flash memories offer the most cost-effective and reliable read/write non-volatile random access memory. The Am28F020 is packaged in 32-pin PDIP, PLCC, and TSOP versions. It is designed to be reprogrammed and erased in-system or in standard EPROM programmers. The Am28F020 is erased when shipped from the factory.

DISTINCTIVE CHARACTERISTICS
■ High performance
— Access times as fast as 70 ns
■ CMOS low power consumption
— 30 mA maximum active current
— 100 µA maximum standby current
— No data retention power consumption
■ Compatible with JEDEC-standard byte-wide
32-pin EPROM pinouts
— 32-pin PDIP
— 32-pin PLCC
— 32-pin TSOP
■ 10,000 write/erase cycles minimum
■ Write and erase voltage 12.0 V ±5%
■ Latch-up protected to 100 mA from
–1 V to VCC +1 V
■ Flasherase Electrical Bulk Chip Erase
— One second typical chip erase time
■ Flashrite Programming
— 10 µs typical byte program time
— 4 s typical chip program time
■ Command register architecture for microprocessor/microcontroller compatible write interface
■ On-chip address and data latches
■ Advanced CMOS flash memory technology
— Low cost single transistor memory cell
■ Automatic write/erase pulse stop timer