MCP2221AT-ISLASHST datasheet(56/80 Pages) MICROCHIP

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MCP2221A

DS20005565A-page 56

 2016 Microchip Technology Inc.

3.1.15

RESET CHIP

This command is used to force a Reset of the

MCP2221A device. This command is useful when the

Flash memory is updated with new data. The

MCP2221A would need to be re-enumerated to see the

new data.

GP3 Settings

Bit 7-5

Don’t

care

Bit 4: GPIO Output value

When the GP3 is set as an output GPIO, this value will

be present at the GP3 pin

Bit 3: GPIO Direction (Input/Output) –

Works only when GP3 is set for GPIO

operation

GPIO Input mode

GPIO Output mode

Bit 2-0: GP3 Designation

111

-100 Don’t care

011

Alternate function 1 (DAC2)

010

Alternate function 0 (ADC3)

001

Dedicated function operation (LED I2C)

000

GPIO operation

26-63

Don’t

care

TABLE 3-39:

RESPONSE 1 STRUCTURE (CONTINUED)

Byte

Index

Function Description

Value

Effect

Note:

This command is the only command that

does not expect a response.

TABLE 3-40:

COMMAND STRUCTURE

Byte

Index

Value

Effect

0x70

Reset Chip – command code

10xAB

20xCD

30xEF

4-63

0x00

Reserved

MCP2221AT-I/ST Datasheet(PDF) 56 Page - Microchip Technology

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