12F629 datasheet(46/136 Pages) MICROCHIP

46 / 136 page

PIC12F629/675

DS41190G-page 46

 2010 Microchip Technology Inc.

ANSEL: ANALOG SELECT REGISTER (ADDRESS: 9Fh)

U-0

R/W-0

R/W-1

—

ADCS2

ADCS1

ADCS0

ANS3

ANS2

ANS1

ANS0

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

Unimplemented: Read as ‘0’

bit 6-4

ADCS<2:0>: A/D Conversion Clock Select bits

000 = Fosc/2

001 = Fosc/8

010 = Fosc/32

x11 = FRC (clock derived from a dedicated internal oscillator = 500 kHz max)

100 = Fosc/4

101 = Fosc/16

110 = Fosc/64

bit 3-0

ANS3:ANS0: Analog Select bits

(Between analog or digital function on pins AN<3:0>, respectively.)

1 = Analog input; pin is assigned as analog input(1)

0 = Digital I/O; pin is assigned to port or special function

Note 1:

Setting a pin to an analog input automatically disables the digital input circuitry, weak pull-ups, and inter-

rupt-on-change. The corresponding TRISIO bit must be set to Input mode in order to allow external control

of the voltage on the pin.

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