MC81F4332 Datasheet, PDF (109/198 Pages) Finechips – ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

MC81F4432
16.1 Registers
WDTR
WATCHDOG TIMER REGISTER
00F4H
7
6
5
4
3
2
1
0
WDTR WDTCL
WDTCMP
Reset value: 7FH
R/W R/W R/W R/W R/W R/W R/W R/W
WDTCL Watchdog Timer Clear Bit
WDTCMP bit6 – bit0
0: Free-run count
1: When the WDTCL is set to “1”, binary
counter is cleared to “0”. And the WDTCL
becomes “0” automatically after one
machine cycle. Counter count up again.
7-bit compare data
WDTSR
WATCHDOG TIMER STATUS REGISTER
00F6H
7
6
5
4
3
2
1
0
WDTSR
One byte register
Reset value: 00H
R/W R/W R/W R/W R/W R/W R/W R/W
Watchdog Timer Function Disable Code
(for System Reset)
10100101: Disable watchdog timer function
Others: Enable watchdog timer function
Figure 16-2 Watchdog Timer Timing
October 19, 2009 Ver.1.35
109