48LM01 datasheet(24/40 Pages) MICROCHIP

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DS20006008C-page 24

48L512/48LM01

11.4

Software Recall Command

The Software Recall command must be user-initiated

and replaces the contents of the SRAM array, the

nonvolatile user space, and the Configuration bits of

the STATUS register (BP[1:0] and ASE) from a

store

into

the

user

corresponding

user-accessible areas.

The Software Recall command can be given and the

operation completed, even if the contents of the array

and registers have not changed since the last store or

recall. Reading the STATUS register during the recall

cycle will indicate a busy bit. Other operations will be

ignored.

FIGURE 11-2:

SOFTWARE RECALL

TABLE 11-1:

STORE ENABLE TRUTH TABLE

ASE Bit

Array Modified

AutoStore

Enabled

Software Store

Enabled

AutoRecall

Enabled

Software Recall

Enabled

Yes

SCK

345

High-Impedance

RECALL Opcode

000

MSb

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