Semiconductor device including memory capable of reducing power consumption

摘要

A semiconductor device includes a plurality of memory arrays and a plurality of memory array control circuits. Each of the plurality of memory array control circuits includes a read/write control circuit for controlling a read/write operation for the memory array, and a selection circuit for selecting and activating the memory array based on a clock signal and an output signal from the read/write control circuit.

主权项

1. A semiconductor device comprising:
a plurality of memory arrays, and a plurality of memory array control circuits, each of said plurality of memory array control circuits including: a read/write control circuit for controlling a read/write operation to the memory array, and a selection circuit for selecting and activating the memory array based on a clock signal and an output signal from said read/write control circuit, wherein said read/write control circuit includes: a counter for incrementing a count number when a write command is inputted, and decrementing said count number when a read command is inputted, and a determination circuit for determining whether or not effective data exists in said memory array, based on said count number of said counter.