X68C64

The X68C64 is an 8K x 8 E²PROM fabricated with advanced CMOS Textured Poly Floating Gate Technology.The X68C64 features a Multiplexed Address and Data bus allowing a direct interface to a variety of popular single-chip microcontrollers operating in expanded multiplexed mode without the need for additional interface circuitry.

The X68C64 is internally configured as two independent 4K x 8 memory arrays. This feature provides the ability to perform nonvolatile memory updates in one array and continue operation out of code stored in the other array;effectively eliminating the need for an auxiliary memory device for code storage.

To write to the X68C64, a three-byte command sequence must precede the byte(s) being written. The X68C64 also provides a second generation software data protection scheme called Block Protect. Block Protect can provide write lockout of the entire device or selected 1K blocks. There are eight 1K x 8 blocks that can be write protected individually in any combination required by the user. Block Protect, in addition to Write Control input, allows the different segments of the memory to have varying degrees of alterability in normal system operation.