The Am29F040 is a 4 Mbit, 5.0 Volt-only Flash memory organized as 512 Kbytes of 8 bits each. The Am29F040 is offered in a 32-pin package. This device is designed to be programmed in-system with the standard system 5.0 V V C C s upply. A 12.0 V V P P i s not required for write or erase operations. The device can also be reprogrammed in standard EPROM programmers. The standard Am29F040 offers access times between 55 ns and 150 ns, allowing operation of high-speed microprocessors without wait states. To eliminate bus contention the device has separate chip enable (CE), write enable (WE) and output enable (OE) controls. The Am29F040 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