PIC16F627-04 Microchip Technology, PIC16F627-04 Datasheet - Page 96

• Manufacturer Part Number: PIC16F627-04
• Description: FLASH-Based 8-Bit CMOS Microcontrollers
• Manufacturer: Microchip Technology

PIC16F62X
14.1
The configuration bits can be programmed (read as ’0’)
or left unprogrammed (read as ’1’) to select various
device configurations. These bits are mapped in
program memory location 2007h.
FIGURE 14-1: CONFIGURATION WORD
DS40300B-page 96
bit 13-10:CP1:CP0: Code Protection bits
bit 8:
bit 7:
bit 6:
bit 5:
bit 3:
bit 2:
bit 4,1-0: FOSC2:FOSC0: Oscillator Selection bits
Note 1: Enabling Brown-out Reset automatically enables Power-up Timer (PWRT) regardless of the value of bit PWRTE. Ensure the
bit13
CP1
2: All of the CP1:CP0 pairs have to be given the same value to enable the code protection scheme listed.
3: The entire data EEPROM will be erased when the code protection is turned off.
4: When MCLR is asserted in INTRC or ER mode, the internal clock oscillator is disabled.
CP0
Configuration Bits
Code protection for 2K program memory
11 = Program memory code protection off
10 = 0400h-07FFh code protected
01 = 0200h-07FFh code protected
00 = 0000h-07FFhcode protected
Code protection for 1K program memory
11 = Program memory code protection off
10 = Program memory code protection off
01 = 0200h-03FFh code protected
00 = 0000h-03FFh code protected
CPD: Data Code Protection bit
1 = Data memory code protection off
0 = Data memory code protected
LVP: Low Voltage Programming Enable
1 = RB4/PGM pin has PGM function, low voltage programming enabled
0 = RB4/PGM is digital I/O, HV on MCLR must be used for programming
BODEN: Brown-out Detect Enable bit
1 = BOD enabled
0 = BOD disabled
MCLRE: RA5/MCLR pin function select
1 = RA5/MCLR pin function is MCLR
0 = RA5/MCLR pin function is digital I/O, 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
111 = ER oscillator: CLKOUT function on RA6/OSC2/CLKOUT pin, Resistor on RA7/OSC1/CLKIN
110 = ER oscillator: I/O function on RA6/OSC2/CLKOUT pin, Resistor on RA7/OSC1/CLKIN
101 = INTRC oscillator: CLKOUT function on RA6/OSC2/CLKOUT pin, I/O function on RA7/OSC1/CLKIN
100 = INTRC oscillator: I/O function on RA6/OSC2/CLKOUT pin, I/O function on RA7/OSC1/CLKIN
011 = EC: I/O function on RA6/OSC2/CLKOUT pin, CLKIN on RA7/OSC1/CLKIN
010 = HS oscillator: High speed crystal/resonator on RA6/OSC2/CLKOUT and RA7/OSC1/CLKIN
001 = XT oscillator: Crystal/resonator on RA6/OSC2/CLKOUT and RA7/OSC1/CLKIN
000 = LP oscillator: Low power crystal on RA6/OSC2/CLKOUT and RA7/OSC1/CLKIN
Power-up Timer is enabled anytime Brown-out Reset is enabled.
CP1
CP0
-
CPD
LVP
BODEN
(3)
(2)
(1)
(1)
Preliminary
(4)
MCLRE
FOSC2
The user will note that address 2007h is beyond
the user program memory space. In fact, it belongs
to the special configuration memory space (2000h
– 3FFFh), which can be accessed only during program-
ming.
PWRTE
DD
WDTE
F0SC1
1999 Microchip Technology Inc.
F0SC0
bit0
Register:CONFIG
Address2007h