PIC16F720-ESLASHML datasheet(58/244 Pages) MICROCHIP

58 / 244 page

PIC16F/LF720/721

DS41430A-page 58

 2010 Microchip Technology Inc.

IOCB: INTERRUPT-ON-CHANGE PORTB REGISTER

R/W-0

U-0

IOCB7

IOCB6

IOCB5

IOCB4

—

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 7-4

IOCB<7:4>: Interrupt-on-Change PORTB Control bits

= Interrupt-on-change enabled(1)

= Interrupt-on-change disabled

bit 3-0

Unimplemented: Read as ‘0’

Note 1: Interrupt-on-change also requires that the RABIE bit of the INTCON register be set.

ANSELB: PORTB ANALOG SELECT REGISTER

U-0

R/W-1

U-0

—

ANSB5

ANSB4

—

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 7-6

Unimplemented: Read as ‘0’

bit 5-4

ANSB<5:4>: Analog Select between Analog or Digital Function on Pins RB<5:4>, respectively

= Digital I/O. Pin is assigned to port or digital special function.

= Analog input. Pin is assigned as analog input(1). Digital input buffer disabled.

bit 3-0

Unimplemented: Read as ‘0’

Note 1:

Setting a pin to an analog input automatically disables the digital input circuitry. Weak pull-ups, if

available, are unaffected. The corresponding TRIS bit must be set to Input mode by the user, in order to

allow external control of the voltage on the pin.

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