MCP2221AT-ISLASHST datasheet(7/80 Pages) MICROCHIP

7 / 80 page

 2016 Microchip Technology Inc.

DS20005565A-page 7

MCP2221A

CHIPSETTING0 REGISTER

R/W-0

R/W-1

R/W-0

CDCSNEN LEDURXINST LEDUTXINST LEDI2CINST SSPNDINST USBCFGINST CHIPPROT1 CHIPPROT0

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7

CDCSNEN:

USB CDC Serial Number Enable bit

= USB CDC Serial Number is enumerated

= No USB CDC Serial Number enumeration (factory default)

bit 6

LEDURXINST:

LED UART RX Inactive State bit

=LED UART RX is inactive-high and active-low (factory default)

=LED UART RX is inactive-low and active-high

bit 5

LEDUTXINST:

LED UART TX Inactive State bit

=LED UART TX is inactive-high and active-low (factory default)

=LED UART TX is inactive-low and active-high

bit 4

LEDI2CINST:

LED I2C Inactive State bit

=LED I2C is inactive-high and active-low (factory default)

=LED I2C is inactive-low and active-high

bit 3

SSPNDINST:

SSPND Inactive State bit

= SSPND is inactive-high and active-low (factory default)

= SSPND is inactive-low and active-high

bit 2

USBCFGINST:

USBCFG Inactive State bit

= USBCFG is inactive-high and active-low (factory default)

= USBCFG is inactive-low and active-high

bit 1-0

CHIPPROT<1:0>:

Chip Settings Protection Level bits

= Reserved

= Permanently locked

= Password protection

= Chip settings unprotected (factory default)

MCP2221AT-I/ST Datasheet(PDF) 7 Page - Microchip Technology

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