PIC16LF720_11 Datasheet, PDF (74/244 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC16(L)F720/721
REGISTER 8-1: CONFIGURATION WORD 1
—
bit 15
R/P-1
R/P-1
U-1
—
DEBUG⁽¹⁾
PLLEN
—
U-1
R/P-1
R/P-1
—
BOREN1
BOREN0
bit 8
U-1
—
bit 7
R/P-1
R/P-1
R/P-1
R/P-1
U-1
CP
MCLRE
PWRTE
WDTEN
—
R/P-1
FOSC1
R/P-1
FOSC0
bit 0
Legend:
R = Readable bit
-n = Value at POR
P = Programmable bit
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 13
DEBUG⁽¹⁾: Debugger Mode bit
0 = Background debugger is enabled
1 = Background debugger is disabled
bit 12
PLLEN: INTOSC PLL Enable bit
0 = INTOSC frequency is 500 kHz
1 = INTOSC frequency is 16 MHz (32x)
bit 11-10
bit 9-8
Unimplemented: Read as ‘1’
BOREN<1:0>: Brown-out Reset Enable bits ⁽²⁾
0x = Brown-out Reset disabled
10 = Brown-out Reset enabled during operation and disabled in Sleep
11 = Brown-out Reset enabled
bit 7
Unimplemented: Read as ‘1’
bit 6
CP: Flash Program Memory Code Protection bit
PIC16F720/721
0 = 0000h to 07FFh/0FFFh code protection on
1 = Code protection off
bit 5
MCLRE: RA3/MCLR/VPP Pin Function Select bit
1 = RA3/MCLR/VPP pin function is MCLR; Weak pull-up enabled.
0 = RA3/MCLR/VPP pin function is digital input; MCLR internally disabled; Weak pull-up disabled
bit 4
PWRTE: Power-up Timer Enable bit
0 = PWRT enabled
1 = PWRT disabled
bit 3
WDTEN: Watchdog Timer Enable bit
0 = WDT disabled
1 = WDT enabled
bit 2
Unimplemented: Read as ‘1’
bit 1-0
FOSC<1:0>: Oscillator Selection bits
11 = EC oscillator: CLKOUT function on RA4/CLKOUT pin, CLKIN on RA5/CLKIN
10 = EC oscillator: I/O function on RA4/CLKOUT pin, CLKIN on RA5/CLKIN
01 = INTOSC oscillator: CLKOUT function on RA4/CLKOUT pin, I/O function on RA5/CLKIN
00 = INTOSCIO oscillator: I/O function on RA4/CLKOUT pin, I/O function on RA5/CLKIN
Note 1:
2:
The Configuration bit is managed automatically by the device development tools. The user should not attempt to manu-
ally write this bit location. However, the user should ensure that this location has been programmed to a ‘1’ and the device
checksum is correct for proper operation of production software.
Fixed Voltage Reference is automatically enabled whenever the BOR is enabled.
DS41430B-page 74
Preliminary
 2011 Microchip Technology Inc.