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General Description

The Flash memory of A81L801 is an 8Mbit, 3.0 volt-only memory organized as 1,048,576 bytes of 8 bits or 524,288 words of 16 bits each. The 8 bits of data appear on I/O0 - I/O7; the 16 bits of data appear on I/O0~I/O15. The A81L801 is offered in 69-ball TFBGA package. This device is designed to be programmed in-system with the standard system 3.0 volt VCC supply. Additional 12.0 volt VPP is not required for insystem write or erase operations. However, the A81L801 can also be programmed in standard EPROM programmers.

The Flash memory of A81L801 has the first toggle bit, I/O6, which indicates whether an Embedded Program or Erase is in progress, or it is in the Erase Suspend. Besides the I/O6 toggle bit, the Flash memory of A81L801 also has a second toggle bit, I/O2, to indicate whether the addressed sector is being selected for erase. The A81L801 also offers the ability to program in the Erase Suspend mode. The standard A81L801 offers access times of 70 and 90ns, allowing high-speed microprocessors to operate without wait states. To eliminate bus contention the device has separate chip enables (CE_F , and CE_S ), write enable ( WE ) and output enable ( OE ) controls.

The device requires only a single 3.0 volt power supply for both read and write functions. Internally generated and regulated voltages are provided for the program and erase operations.