PIC16F1938 Datasheet, PDF (58/452 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers

PIC16(L)F1938/9
REGISTER 4-1:
R/P-1/1
FCMEN
bit 13
CONFIGURATION WORD 1
R/P-1/1
IESO
R/P-1/1
CLKOUTEN
R/P-1/1
BOREN1
R/P-1/1
BOREN0
R/P-1/1
CPD
R/P-1/1
CP
bit 7
R/P-1/1
MCLRE
bit 6
R/P-1/1
PWRTE
R/P-1/1
WDTE1
R/P-1/1
WDTE0
R/P-1/1
FOSC2
R/P-1/1
FOSC1
R/P-1/1
FOSC0
bit 0
Legend:
R = Readable bit
‘0’ = Bit is cleared
P = Programmable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘1’
-n = Value when blank or after Bulk Erase
bit 13
bit 12
bit 11
bit 10-9
bit 8
bit 7
bit 6
bit 5
bit 4-3
FCMEN: Fail-Safe Clock Monitor Enable 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
CLKOUTEN: Clock Out Enable bit
1 = CLKOUT function is disabled. I/O or oscillator function on RA6/CLKOUT
0 = CLKOUT function is enabled on RA6/CLKOUT
BOREN<1:0>: Brown-out Reset Enable bits⁽¹⁾
11 = BOR enabled
10 = BOR enabled during operation and disabled in Sleep
01 = BOR controlled by SBOREN bit of the BORCON register
00 = BOR disabled
CPD: Data Code Protection bit⁽²⁾
1 = Data memory code protection is disabled
0 = Data memory code protection is enabled
CP: Code Protection bit⁽³⁾
1 = Program memory code protection is disabled
0 = Program memory code protection is enabled
MCLRE: RE3/MCLR/VPP Pin Function Select bit
If LVP bit = 1:
This bit is ignored.
If LVP bit = 0:
1 = RE3/MCLR/VPP pin function is MCLR; Weak pull-up enabled.
0 = RE3/MCLR/VPP pin function is digital input; MCLR internally disabled; Weak pull-up under control
of WPUE3 bit..
PWRTE: Power-up Timer Enable bit⁽¹⁾
1 = PWRT disabled
0 = PWRT enabled
WDTE<1:0>: Watchdog Timer Enable bit
11 = WDT enabled
10 = WDT enabled while running and disabled in Sleep
01 = WDT controlled by the SWDTEN bit in the WDTCON register
00 = WDT disabled
Note 1: Enabling Brown-out Reset does not automatically enable Power-up Timer.
2: The entire data EEPROM will be erased when the code protection is turned off during an erase.
3: The entire program memory will be erased when the code protection is turned off.
DS41574A-page 58
Preliminary
 2011 Microchip Technology Inc.