MA160014 Microchip Technology, MA160014 Datasheet - Page 360

• Manufacturer Part Number: MA160014
• Description: MOD PLUG-IN 44PIN PIC18LF45K22
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of MA160014

• Accessory Type: Plug-In Module (PIM) - PIC18LF45K10
• Product: Microcontroller Modules
• Data Bus Width: 8 bit
• Core Processor: PIC18LF45K22
• Interface Type: I2C, SPI
• Operating Supply Voltage: 1.8 V to 5.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: PICDEM PIC18 Explorer, DM183032
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18(L)F2X/4XK22
24.2
For PIC18(L)F2X/4XK22 devices, the WDT is driven by
the LFINTOSC source. When the WDT is enabled, the
clock source is also enabled. The nominal WDT period
is 4 ms and has the same stability as the LFINTOSC
oscillator.
The 4 ms period of the WDT is multiplied by a 16-bit
postscaler. Any output of the WDT postscaler is
selected by a multiplexer, controlled by bits in Configu-
ration Register 2H. Available periods range from 4 ms
to 131.072 seconds (2.18 minutes). The WDT and
postscaler are cleared when any of the following events
occur: a SLEEP or CLRWDT instruction is executed, the
IRCF bits of the OSCCON register are changed or a
clock failure has occurred.
FIGURE 24-1:
DS41412D-page 360
Change on IRCF bits
Note 1: The CLRWDT and SLEEP instructions
LFINTOSC Source
All Device Resets
2: Changing the setting of the IRCF bits of
3: When a CLRWDT instruction is executed,
WDTPS<3:0>
Watchdog Timer (WDT)
clear the WDT and postscaler counts
when executed.
the OSCCON register clears the WDT
and postscaler counts.
the postscaler count will be cleared.
SWDTEN
CLRWDT
WDTEN
Sleep
WDT BLOCK DIAGRAM
Enable WDT
WDT Counter
128
4
Preliminary
Programmable Postscaler
1:1 to 1:32,768
Reset
 2010 Microchip Technology Inc.
WDT
Reset
Wake-up
from Power
Managed Modes