Semiconductor integrated circuit device having an electrically e

Details Semiconductor integrated circuit device having an electrically e Semiconductor integrated circuit device having an electrically e

1998-08-31

2000-05-16

Nelms, David

Static information storage and retrieval

Floating gate

Particular connection

36518533, 365221, G11C 1604

Patent

active

060645938

ABSTRACT:
A semiconductor device having and electrically erasable and programmable nonvolatile memory, for example, a rewritable nonvolatile memory including memory cells arranged in rows and columns and disposed to facilitate both flash erasure as well as selective erasure of individual units of plural memory cells. The semiconductor device which functions as a microcomputer chip also has a processing unit and includes an input terminal for receiving an operation mode signal for switching the microcomputer between a first operation mode in which the flash memory is rewritten under control of a processing unit and a second operation mode in which the flash memory is rewritten under control of separate writing circuit externally connectable to the microcomputer.

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