PIC16F631-I/P Microchip Technology Inc., PIC16F631-I/P Datasheet - Page 197

• 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 14-1:
© 2007 Microchip Technology Inc.
bit 13
bit 6
Legend:
R = Readable bit
-n = Value at POR
bit 13-12
bit 11
bit 10
bit 9-8
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
Note
Reserved
CP
1:
2:
3:
4:
(3)
Enabling Brown-out Reset does not automatically enable Power-up Timer.
The entire data EEPROM will be erased when the code protection is turned off.
The entire program memory will be erased when the code protection is turned off.
When MCLR is asserted in INTOSC or RC mode, the internal clock oscillator is disabled.
Reserved: Reserved bits. Do Not Use.
FCMEN: Fail-Safe Clock Monitor Enabled bit
1 = Fail-Safe Clock Monitor is enabled
0 = Fail-Safe Clock Monitor is disabled
IESO: Internal External Switchover bit
1 = Internal External Switchover mode is enabled
0 = Internal External Switchover mode is disabled
BOREN<1:0>: Brown-out Reset Selection bits
11 = BOR enabled
10 = BOR enabled during operation and disabled in Sleep
01 = BOR controlled by SBOREN bit of the PCON register
00 = BOR disabled
CPD: Data Code Protection bit
1 = Data memory code protection is disabled
0 = Data memory code protection is enabled
CP: Code Protection bit
1 = Program memory code protection is disabled
0 = Program memory code protection is enabled
MCLRE: MCLR Pin Function Select bit
1 = MCLR pin function is MCLR
0 = MCLR pin function is digital input, MCLR internally tied to V
PWRTE: Power-up Timer Enable bit
1 = PWRT disabled
0 = PWRT enabled
WDTE: Watchdog Timer Enable bit
1 = WDT enabled
0 = WDT disabled
FOSC<2:0>: Oscillator Selection bits
111 =
110 =
101 =
100 =
011 =
010 =
001 =
000 =
MCLRE
Reserved
CONFIG: CONFIGURATION WORD REGISTER
RC oscillator: CLKOUT function on RA4/OSC2/CLKOUT pin, RC on RA5/OSC1/CLKIN
RCIO oscillator: I/O function on RA4/OSC2/CLKOUT pin, RC on RA5/OSC1/CLKIN
INTOSC oscillator: CLKOUT function on RA4/OSC2/CLKOUT pin, I/O function on
RA5/OSC1/CLKIN
INTOSCIO oscillator: I/O function on RA4/OSC2/CLKOUT pin, I/O function on
RA5/OSC1/CLKIN
EC: I/O function on RA4/OSC2/CLKOUT pin, CLKIN on RA5/OSC1/CLKIN
HS oscillator: High-speed crystal/resonator on RA4/OSC2/CLKOUT and RA5/OSC1/CLKIN
XT oscillator: Crystal/resonator on RA4/OSC2/CLKOUT and RA5/OSC1/CLKIN
LP oscillator: Low-power crystal on RA4/OSC2/CLKOUT and RA5/OSC1/CLKIN
(4)
W = Writable bit
‘1’ = Bit is set
(2)
PIC16F631/677/685/687/689/690
FCMEN
PWRTE
(2)
(3)
(1)
WDTE
IESO
DD
P = Programmable’
‘0’ = Bit is cleared
BOREN1
FOSC2
(1)
BOREN0
FOSC1
(1)
DS41262D-page 195
U = Unimplemented
bit, read as ‘0’
x = Bit is unknown
FOSC0
CPD
bit 7
bit 0
(2