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MR20H40VDCR

NVRAM 4Mb 3.3V 512Kx8 SPI

Extech Instruments Corporation. 

MR20H40 / MR25H40

Exit Sleep Mode (WAKE)

The Exit Sleep Mode (WAKE) command turns on internal MRAM power regulators to allow normal operation.

The WAKE command is entered by driving CS low, sending the command code, and then driving CS high.

The memory returns to standby mode after tRDP. The CS pin must remain high until the tRDP period is over.

WAKE must be executed after sleep mode entry and prior to any other command.

Figure 11 – Exit Sleep Mode (WAKE) Timing

CS

t RDP

01234567

SCK

Mode 3

Mode 0

Instruction (ABh)

SI

10101 011

SO

Sleep Mode Current

Standby Current

Copyright © Everspin Technologies 2014

13

MR20H40 / MR25H40 Revision 11, 8/2014

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