PIC16F631-I/P Microchip Technology Inc., PIC16F631-I/P Datasheet - Page 63

• Manufacturer Part Number: PIC16F631-I/P
• Description: MCU, 8-Bit, 1KW Flash, 64 RAM, 18 I/O, PDIP-20
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F631-I/P

• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 128 Bytes
• Input Output: 18
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 20-pin PDIP
• Programmable Memory: 1.75K Bytes
• Ram Size: 64 Bytes
• Speed: 20 MHz
• Timers: 1-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

REGISTER 4-3:
REGISTER 4-4:
© 2007 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
Note 1:
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-4
bit 3-0
Note 1:
R/W-1
ANS7
U-0
—
2:
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.
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.
PIC16F677/PIC16F685/PIC16F687/PIC16F689/PIC16F690 only.
ANS<7:0>: Analog Select bits
Analog select between analog or digital function on pins AN<7:0>, respectively.
1 = Analog input. Pin is assigned as analog input
0 = Digital I/O. Pin is assigned to port or special function.
Unimplemented: Read as ‘0’
ANS<11:8>: Analog Select bits
Analog select between analog or digital function on pins AN<7:0>, respectively.
1 = Analog input. Pin is assigned as analog input
0 = Digital I/O. Pin is assigned to port or special function.
R/W-1
ANS6
U-0
—
ANSEL: ANALOG SELECT REGISTER
ANSELH: ANALOG SELECT HIGH REGISTER
W = Writable bit
‘1’ = Bit is set
W = Writable bit
‘1’ = Bit is set
R/W-1
ANS5
U-0
PIC16F631/677/685/687/689/690
—
R/W-1
ANS4
U-0
—
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
ANS11
R/W-1
R/W-1
ANS3
(1)
(1)
.
.
(2)
ANS10
R/W-1
R/W-1
ANS2
x = Bit is unknown
x = Bit is unknown
R/W-1
R/W-1
ANS1
ANS9
DS41262D-page 61
R/W-1
R/W-1
ANS8
ANS0
bit 0
bit 0