PIC16F819 Microchip Technology Inc., PIC16F819 Datasheet - Page 92

• Manufacturer Part Number: PIC16F819
• Description: 18/20-pin Enhanced Flash Microcontrollers With Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

PIC16F818/819
REGISTER 12-1:
DS39598E-page 90
bit 13
bit 13
bit 12
bit 11
bit 10-9
bit 8
bit 7
bit 6
bit 5
bit 3
bit 2
bit 4, 1-0
R/P-1 R/P-1
CP
CCPMX DEBUG WRT1 WRT0 CPD
CP: Flash Program Memory Code Protection bit
1 = Code protection off
0 = All memory locations code-protected
CCPMX: CCP1 Pin Selection bit
1 = CCP1 function on RB2
0 = CCP1 function on RB3
DEBUG: In-Circuit Debugger Mode bit
1 = In-Circuit Debugger disabled, RB6 and RB7 are general purpose I/O pins
0 = In-Circuit Debugger enabled, RB6 and RB7 are dedicated to the debugger
WRT1:WRT0: Flash Program Memory Write Enable bits
For PIC16F818:
11 = Write protection off
10 = 000h to 01FF write-protected, 0200 to 03FF may be modified by EECON control
01 = 000h to 03FF write-protected
For PIC16F819:
11 = Write protection off
10 = 0000h to 01FFh write-protected, 0200h to 07FFh may be modified by EECON control
01 = 0000h to 03FFh write-protected, 0400h to 07FFh may be modified by EECON control
00 = 0000h to 05FFh write-protected, 0600h to 07FFh may be modified by EECON control
CPD: Data EE Memory Code Protection bit
1 = Code protection off
0 = Data EE memory locations code-protected
LVP: Low-Voltage Programming Enable bit
1 = RB3/PGM pin has PGM function, Low-Voltage Programming enabled
0 = RB3/PGM pin has digital I/O function, HV on MCLR must be used for programming
BOREN: Brown-out Reset Enable bit
1 = BOR enabled
0 = BOR disabled
MCLRE: RA5/MCLR/V
1 = RA5/MCLR/V
0 = RA5/MCLR/V
PWRTEN: Power-up Timer Enable bit
1 = PWRT disabled
0 = PWRT enabled
WDTEN: Watchdog Timer Enable bit
1 = WDT enabled
0 = WDT disabled
FOSC2:FOSC0: Oscillator Selection bits
111 = EXTRC oscillator; CLKO function on RA6/OSC2/CLKO pin
110 = EXTRC oscillator; port I/O function on RA6/OSC2/CLKO pin
101 = INTRC oscillator; CLKO function on RA6/OSC2/CLKO pin and port I/O function on
100 = INTRC oscillator; port I/O function on both RA6/OSC2/CLKO pin and RA7/OSC1/CLKI pin
011 = EXTCLK; port I/O function on RA6/OSC2/CLKO pin
010 = HS oscillator
001 = XT oscillator
000 = LP oscillator
R/P-1
Legend:
R = Readable bit
-n = Value when device is unprogrammed
Note 1: The erased (unprogrammed) value of the Configuration Word is 3FFFh.
CONFIGURATION WORD (ADDRESS 2007h)
RA7/OSC1/CLKI pin
R/P-1 R/P-1 R/P-1 R/P-1 R/P-1
PP
PP
pin function is MCLR
pin function is digital I/O, MCLR internally tied to V
PP
Pin Function Select bit
P = Programmable bit
LVP BOREN MCLRE FOSC2 PWRTEN WDTEN FOSC1 FOSC0
R/P-1
U = Unimplemented bit, read as ‘1’
u = Unchanged from programmed state
R/P-1
(1)
R/P-1
DD
 2004 Microchip Technology Inc.
R/P-1
R/P-1
R/P-1
bit 0