STGAP1ASTR datasheet(51/70 Pages) STMICROELECTRONICS

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STGAP1AS

Programming manual

9.1.4

ResetStatus and GlobalReset commands

The ResetStatus command is a specific reset command which acts on all status registers

releasing all the latched flags. The command is executed only when the SD input is low,

otherwise the SPI_ERR flag is forced low.

The GlobalReset command reset all the registers to the default and releases all the failure

flag (if latched). It can be sent when the device is in the configuration mode only, otherwise

the command is ignored and the SPI_ERR flag is forced low.

9.1.5

Sleep command

The command forces the device to switch in standby mode within a tsleep period. The

command is executed only when the SD pin in low, if the SD pin is high the command is

ignored and the SPI_ERR flag is forced low.

Refer to Section 6.4 on page 24 for the description of the standby mode.

9.1.6

NOP command

The command does not modify the device status and does not generate any answer.

Table 18. ResetStatus command synopsis

Byte

To device

1101 0000

0011 0010(1)

1. The CRC byte of the command, if the CRC check is disabled this byte is ignored.

Table 19. GlobalReset command synopsis

Byte

To device

1110 1010

1001 0100(1)

1. The CRC byte of the command, if the CRC check is disabled this byte is ignored.

Table 20. Sleep command synopsis

Byte

To device

1111 0101

1100 1001(1)

1. The CRC byte of the command, if the CRC check is disabled this byte is ignored.

Table 21. NOP command synopsis

Byte

To device

0000 0000

0000 1100(1)

1. The CRC byte of the command, if the CRC check is disabled this byte is ignored.

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