M28W800B

The M28W800 is a 8 Mbit non-volatile Flash memory that can be erased electrically at the block level and programmed in-system on a Word-by-Word basis. The device is offered in the TSOP48 (12 x 20 mm) and the BGA48 0.75mm ball pitch packages. When shipped, all bits of the M28W800 are in the '1' state.

The array matrix organisation allows each block to be erased and reprogrammed without affecting other blocks. Each block can be programmed and erased over 100,000 cycles. V_DDQ allows to drive the I/O pin down to 1.65V. An optional 12V V_PP power supply is provided to speed up the programphase at customer production line environment.

An internal Command Interface (C.I.) decodes the instructions to access/modify the memory content. The Program/Erase Controller (P/E.C.) automatically executes the algorithms taking care of the timings necessary for program and erase operations.Verification is performed too, unburdeningthe microcontroller, while the Status Register tracks the status of the operation.

The following instructions are executed by the M28W800: Read Array, Read Electronic Signature, Read Status Register, Clear Status Register,Program, Block Erase, Program/Erase Suspend, Program/Erase Resume, CFI Query.