Microchip Technology IC PIC MCU PIC16F1937-I/PT TQFP-44 MCP PIC16F1937-I/PT Data Sheet
Product codes
PIC16F1937-I/PT
PIC16(L)F1934/6/7
DS41364E-page 62
2008-2011 Microchip Technology Inc.
REGISTER 4-1:
CONFIGURATION WORD 1
R/P-1/1
R/P-1/1
R/P-1/1
R/P-1/1
R/P-1/1
R/P-1/1
R/P-1/1
FCMEN
IESO
CLKOUTEN
BOREN1
BOREN0
CPD
CP
bit 13
bit 7
R/P-1/1
R/P-1/1
R/P-1/1
R/P-1/1
R/P-1/1
R/P-1/1
R/P-1/1
MCLRE
PWRTE
WDTE1
WDTE0
FOSC2
FOSC1
FOSC0
bit 6
bit 0
Legend:
R = Readable bit
P = Programmable bit
U = Unimplemented bit, read as ‘1’
‘0’ = Bit is cleared
‘1’ = Bit is set
-n = Value when blank or after Bulk Erase
bit 13
FCMEN:
Fail-Safe Clock Monitor Enable bit
1
= Fail-Safe Clock Monitor is enabled
0
= Fail-Safe Clock Monitor is disabled
bit 12
IESO:
Internal External Switchover bit
1
= Internal/External Switchover mode is enabled
0
= Internal/External Switchover mode is disabled
bit 11
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
bit 10-9
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 PCON register
00
= BOR disabled
bit 8
CPD:
Data Code Protection bit
(2)
1
= Data memory code protection is disabled
0
= Data memory code protection is enabled
bit 7
CP:
Code Protection bit
(3)
1
= Program memory code protection is disabled
0
= Program memory code protection is enabled
bit 6
MCLRE:
RE3/MCLR/V
PP
Pin Function Select bit
If LVP bit = 1:
This bit is ignored.
If LVP bit = 0:
1
= RE3/MCLR/V
PP
pin function is MCLR; Weak pull-up enabled.
0
= RE3/MCLR/V
PP
pin function is digital input; MCLR internally disabled; Weak pull-up under control of WPUE3
bit..
bit 5
PWRTE:
Power-up Timer Enable bit
(1)
1
= PWRT disabled
0
= PWRT enabled
bit 4-3
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.