PIC32MX5XX_11 Datasheet, PDF (168/256 Pages) Microchip Technology – High-Performance, USB, CAN and Ethernet 32-bit Flash Microcontrollers

PIC32MX5XX/6XX/7XX
REGISTER 28-2: DEVCFG1: DEVICE CONFIGURATION WORD 1
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Range 31/23/15/7 30/22/14/6 29/21/13/5 28/20/12/4 27/19/11/3 26/18/10/2 25/17/9/1 24/16/8/0
31:24
23:16
15:8
7:0
r-1
r-1
—
—
R/P
r-1
FWDTEN
—
R/P
R/P
FCKSM<1:0>
R/P
r-1
IESO
—
r-1
r-1
—
—
r-1
R/P
—
R/P
R/P
FPBDIV<1:0>
R/P
r-1
FSOSCEN
—
r-1
r-1
r-1
r-1
—
—
—
—
R/P
R/P
R/P
R/P
WDTPS<4:0>
r-1
R/P
R/P
R/P
—
OSCIOFNC POSCMOD<1:0>
r-1
R/P
R/P
R/P
—
FNOSC<2:0>
Legend:
R = Readable bit
U = Unimplemented bit
W = Writable bit
‘1’ = Bit is set
P = Programmable bit
‘0’ = Bit is cleared
r = Reserved bit
x = Bit is unknown
bit 31-24 Reserved: Write ‘1’
bit 23 FWDTEN: Watchdog Timer Enable bit
1 = The WDT is enabled and cannot be disabled by software
0 = The WDT is not enabled; it can be enabled in software
bit 22-21 Reserved: Write ‘1’
bit 20-16 WDTPS<4:0>: Watchdog Timer Postscale Select bits
10100 = 1:1048576
10011 = 1:524288
10010 = 1:262144
10001 = 1:131072
10000 = 1:65536
01111 = 1:32768
01110 = 1:16384
01101 = 1:8192
01100 = 1:4096
01011 = 1:2048
01010 = 1:1024
01001 = 1:512
01000 = 1:256
00111 = 1:128
00110 = 1:64
00101 = 1:32
00100 = 1:16
00011 = 1:8
00010 = 1:4
00001 = 1:2
00000 = 1:1
All other combinations not shown result in operation = 10100
bit 15-14 FCKSM<1:0>: Clock Switching and Monitor Selection Configuration bits
1x = Clock switching is disabled, Fail-Safe Clock Monitor is disabled
01 = Clock switching is enabled, Fail-Safe Clock Monitor is disabled
00 = Clock switching is enabled, Fail-Safe Clock Monitor is enabled
Note 1: Do not disable the POSC (POSCMOD = 11) when using this oscillator source.
DS61156G-page 168
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