GENERAL DESCRIPTION
The Am29F400A is offered in 44-pin SO and 48-pin TSOP packages. This device is designed to be programmed in-system with the standard system 5.0 Volt VCC supply. 12.0 Volt VPP is not required for program or erase operations. The device can also be reprogrammed in standard EPROM programmers. The standard Am29F400A offers access times of 60 ns, 70 ns, 90 ns, 120 ns and 150 ns, allowing high speed microprocessors to operate without wait states. To eliminate bus contention the device has separate chip enable (CE), write enable (WE) and output enable (OE) controls. The Am29F400A is entirely command set compatible with the JEDEC single-power-supply Flash standard. Commands are written to the command register using standard microprocessor write timings. Register contents serve as input to an internal state-machine which controls the erase and programming circuitry. Publication# 20380 Rev: B Amendment/0 Issue Date: April 1997 This document contains information on a product under development at Advanced Micro Devices.