AT25PE20 datasheet(34/64 Pages) DIALOG

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AT25PE20

DS-25PE20–139C–8/2018

13.

Software Reset

In some applications, it may be necessary to prematurely terminate a program or erase cycle early rather than wait the

hundreds of microseconds or milliseconds necessary for the program or erase operation to complete normally. The

Software Reset command allows a program or erase operation in progress to be ended abruptly and returns the device

to an idle state.

To perform a Software Reset, the CS pin must be asserted and a 4-byte command sequence of F0h, 00h, 00h, and 00h

must be clocked into the device. Any additional data clocked into the device after the last byte will be ignored. When the

CS pin is deasserted, the program or erase operation currently in progress will be terminated within a time tSWRST. Since

the program or erase operation may not complete before the device is reset, the contents of the page being programmed

or erased cannot be guaranteed to be valid.

The Software Reset command has no effect on the states of the Sector Protection Register or the Buffer and page size

configuration.

The complete 4-byte opcode must be clocked into the device before the CS pin is deasserted; otherwise, no reset

operation will be performed.

Table 13-1. Software Reset

Figure 13-1. Software Reset

Command

Byte 1

Byte 2

Byte 3

Byte 4

Software Reset

F0h

00h

F0h

00h

Each transition represents eight bits

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