PIC32MX440F256H-80I Datasheet, PDF (561/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
REGISTER 26-3: DEVCFG1: DEVICE CONFIGURATION WORD 1
r-1
r-1
r-1
r-1
r-1
r-1
r-1
r-1
—
—
—
—
—
—
—
—
bit 31
bit 24
R/P-1
r-1
FWDTEN
—
bit 23
r-1
R/P-1
R/P-1
R/P-1
R/P-1
R/P-1
—
WDTPS<4:0>
bit 16
R/P-1
R/P-1
FCKSM<1:0>
bit 15
R/P-1
R/P-1
FPBDIV<1:0>
r-1
R/P-1
R/P-1
R/P-1
—
OSCIOFNC
POSCMD<1:0>
bit 8
R/P-1
IESO
bit 7
r-1
R/P-1
r-1
—
FSOSCEN
—
r-1
R/P-1
R/P-1
R/P-1
—
FNOSC<2:0>
bit 0
Legend:
R = Readable bit
U = Unimplemented bit
W = Writable bit
P = Programmable bit
-n = Bit Value at POR: (‘0’, ‘1’, x = Unknown)
r = Reserved bit
bit 31-24
bit 23
bit 22
bit 20-16
Reserved: Write ‘1’
FWDTEN: WatchDog Timer Hardware 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
Reserved: Write ‘1’
WDTPS<4:0>: Watchdog Timer Postscaler Selection bits⁽¹⁾
These bits are used to set the WDT time-out period.
10100 = 1:1,045,876
10011 = 1:524,288
10010 = 1:262,144
10001 = 1:131,072
10000 = 1:65,536
01111 = 1:32,768
01110 = 1:16,384
01101 = 1:8,192
01100 = 1:4,096
01011 = 1:2,048
01010 = 1:1,024
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
Note 1: All combinations not listed result in operation as if the selection was 10100.
2: Do not disable POSC (POSCMD = 00) when using this oscillator source.
© 2008 Microchip Technology Inc.
Preliminary
DS61143E-page 559