Semiconductor device saving data in non-volatile manner...

Details Semiconductor device saving data in non-volatile manner... Semiconductor device saving data in non-volatile manner...

2006-02-14

2006-02-14

Phung, Anh (Department: 2824)

Static information storage and retrieval

Systems using particular element

Magnetic thin film

C365S154000, C365S158000, C365S205000, C365S229000

Reexamination Certificate

active

06999342

ABSTRACT:
A power control unit activates a control signal ST for a circuit block to be set to a standby state before turning off power of the circuit block or a whole chip, and saves an operation result of data processing of the circuit block into a memory unit. When the power is again supplied to the circuit block in the standby state, the power control unit activates a control signal RES after the power supply is started and restores the data saved in the memory unit to the circuit block. Flip-flops in the circuit block are connected in series when the saving or restoring of data is performed, and perform a data transfer operation with a path different from that in a normal operation. Therefore, a semiconductor device can be provided which can rapidly transit to a standby mode having reduced current consumption while holding internal information.

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