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PIC18F2331_10 Datasheet, PDF (245/392 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D | |||
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PIC18F2331/2431/4331/4431
REGISTER 21-6: ANSEL0: ANALOG SELECT REGISTER 0(1)
R/W-1
ANS7(2)
bit 7
R/W-1
ANS6(2)
R/W-1
ANS5(2)
R/W-1
ANS4
R/W-1
ANS3
R/W-1
ANS2
R/W-1
ANS1
R/W-1
ANS0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
â1â = Bit is set
U = Unimplemented bit, read as â0â
â0â = Bit is cleared
x = Bit is unknown
bit 7-0
ANS<7:0>: Analog Input Function Select bits
Correspond to pins, AN<7:0>.
1 = Analog input
0 = Digital I/O
Note 1:
2:
Setting a pin to an analog input disables the digital input buffer. The corresponding TRIS bit should be set
for an input and cleared for an output (analog or digital). The ANSx bits directly correspond to the ANx pins
(e.g., ANS0 = AN0, ANS1 = AN1, etc.). Unused ANSx bits are read as â0â.
ANS7 through ANS5 are available only on PIC18F4331/4431 devices.
REGISTER 21-7: ANSEL1: ANALOG SELECT REGISTER 1(1)
U-0
U-0
U-0
U-0
U-0
U-0
â
â
â
â
â
â
bit 7
U-0
R/W-1
â
ANS8(2)
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
â1â = Bit is set
U = Unimplemented bit, read as â0â
â0â = Bit is cleared
x = Bit is unknown
bit 7-1
bit 0
Note 1:
2:
Unimplemented: Read as â0â
ANS8: Analog Input Function Select bit(2)
1 = Analog input
0 = Digital I/O
Setting a pin to an analog input disables the digital input buffer. The corresponding TRIS bit should be set
for an input and cleared for an output (analog or digital). The ANSx bits directly correspond to the ANx pins
(e.g., ANS8 = AN8, ANS9 = AN9, etc.). Unused ANSx bits are read as â0â.
ANS8 is available only on PIC18F4331/4431 devices.
ï£ 2010 Microchip Technology Inc.
DS39616D-page 245
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