PIC32MX210F016B-I/SO Microchip Technology, PIC32MX210F016B-I/SO Datasheet - Page 235

• Manufacturer Part Number: PIC32MX210F016B-I/SO
• Description: PIC32, 16KB Flash, 4KB RAM, 40 MHz, USB, CTMU, 4 DMA 28 SOIC .300in TUBE
• Manufacturer: Microchip Technology

26.2
This section describes the operation of the WDT and
Power-up Timer of the PIC32MX1XX/2XX.
The WDT, when enabled, operates from the internal
Low-Power Oscillator (LPRC) clock source and can be
used to detect system software malfunctions by reset-
ting the device if the WDT is not cleared periodically in
software. Various WDT time-out periods can be
selected using the WDT postscaler. The WDT can also
be used to wake the device from Sleep or Idle mode.
FIGURE 26-1:
© 2011-2012 Microchip Technology Inc.
WDTCLR = 1
WDT Enable
WDT Enable
Reset Event
Watchdog Timer (WDT)
PWRT Enable
Oscillator
WDT Enable
LPRC
Wake
WATCHDOG AND POWER-UP TIMER BLOCK DIAGRAM
WDT Counter Reset
Clock
Preliminary
25-bit Counter
FWDTPS<4:0> (DEVCFG1<20:16>)
The following are some of the key features of the WDT
module:
• Configuration or software controlled
• User-configurable time-out period
• Can wake the device from Sleep or Idle
1:64 Output
25
1
Decoder
PIC32MX1XX/2XX
PWRT Enable
Power Save
0
1
LPRC
Control
PWRT
Device Reset
NMI (Wake-up)
DS61168D-page 235