PIC16F882_09 Datasheet, PDF (50/328 Pages) Microchip Technology – 28/40/44-Pin, Enhanced Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F882/883/884/886/887
REGISTER 3-4: ANSELH: ANALOG SELECT HIGH REGISTER
U-0
—
bit 7
U-0
R/W-1
R/W-1
R/W-1
R/W-1
—
ANS13
ANS12
ANS11
ANS10
R/W-1
ANS9
R/W-1
ANS8
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-6
bit 5-0
Unimplemented: Read as ‘0’
ANS<13:8>: Analog Select bits
Analog select between analog or digital function on pins AN<13:8>, 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
interrupt-on-change if available. The corresponding TRIS bit must be set to Input mode in order to allow
external control of the voltage on the pin.
REGISTER 3-5: PORTB: PORTB REGISTER
R/W-x
RB7
bit 7
R/W-x
RB6
R/W-x
RB5
R/W-x
RB4
R/W-x
RB3
R/W-x
RB2
R/W-x
RB1
R/W-x
RB0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-0
RB<7:0>: PORTB I/O Pin bit
1 = Port pin is > VIH
0 = Port pin is < VIL
REGISTER 3-6: TRISB: PORTB TRI-STATE REGISTER
R/W-1
TRISB7
bit 7
R/W-1
TRISB6
R/W-1
TRISB5
R/W-1
TRISB4
R/W-1
TRISB3
R/W-1
TRISB2
R/W-1
TRISB1
R/W-1
TRISB0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-0
TRISB<7:0>: PORTB Tri-State Control bit
1 = PORTB pin configured as an input (tri-stated)
0 = PORTB pin configured as an output
DS41291F-page 48
© 2009 Microchip Technology Inc.