
2011 Microchip Technology Inc.
Preliminary
DS41455B-page 39
PIC16LF1902/3
REGISTER 4-2:
CONFIGURATION WORD 2
R/P-1
U-1
LVP
DEBUG
LPBOR
BORV
STVREN
—
bit 13
bit 8
U-1
R/P-1
—
—WRT<1:0>
bit 7
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
LVP:
Low-Voltage Programming Enable bit
1
= Low-voltage programming enabled
0
= High-voltage on MCLR must be used for programming
bit 12
DEBUG:
In-Circuit Debugger Mode bit
1
= In-Circuit Debugger disabled, ICSPCLK and ICSPDAT are general purpose I/O pins
0
= In-Circuit Debugger enabled, ICSPCLK and ICSPDAT are dedicated to the debugger
bit 11
LPBOR:
Low-Power BOR bit
1
= Low-Power BOR is disabled
0
= Low-Power BOR is enabled
bit 10
BORV:
Brown-out Reset Voltage Selection bit
1
= Brown-out Reset voltage set to 1.9V (typical)
0
= Brown-out Reset voltage set to 2.5V (typical)
bit 9
STVREN:
Stack Overflow/Underflow Reset Enable bit
1
= Stack Overflow or Underflow will cause a Reset
0
= Stack Overflow or Underflow will not cause a Reset
bit 8-2
Unimplemented:
Read as ‘1’
bit 1-0
WRT<1:0>:
Flash Memory Self-Write Protection bits
2 kW Flash memory (PIC16LF1902 only):
11
= Write protection off
10
= 000h to 1FFh write-protected, 200h to 7FFh may be modified by PMCON control
01
= 000h to 3FFh write-protected, 400h to 7FFh may be modified by PMCON control
00
= 000h to 7FFh write-protected, no addresses may be modified by PMCON control
4 kW Flash memory (PIC16LF1903 only):
11
= Write protection off
10
= 000h to 1FFh write-protected, 200h to FFFh may be modified by PMCON control
01
= 000h to 7FFh write-protected, 800h to FFFh may be modified by PMCON control
00
= 000h to FFFh write-protected, no addresses may be modified by PMCON control