TMPM330 - Keil

WDMOD
(0x4004_0000)
WDCR
(0x4004_0004)
Under development
Watchdog Timer Mode Register
7 6 5 4 3 2 1 0
bit Symbol WDTE WDTP2 WDTP1 WDTP0 I2WDT RESCR
Read/Write R/W R/W R R/W R/W
After reset 1 0 0 0 0 1 0
Function WDT Selects WDT detection time
control
1: enable
000: 2 16 /fSYS
001: 2 18 /fSYS
010: 2 20 /fSYS
011: 2 22 "0" is IDLE
Write "0."
/fSYS
read. 0: Stop
1: Start
0:
Generates
NMI
interrupt
100: 2 24 /fSYS
101: 2 26 /fSYS
110: Setting prohibited
111: Setting prohibited
Detection time of watchdog timer @ fc = 40 MHz
TMPM330 (rev 0.4) 14-4
1:
Connects
WDTOUT
to reset
Watchdog timer out control
0 Generates NMI interrupt
1 Connects WDT out to reset
TMPM330
SYSCR1
Detection time of watchdog timer
clock gear
WDMOD
value
000 001 010 011 100 101
000 (fc) 1.63 ms 6.55 ms 26.21 ms 104.86 ms 419.43 ms 1.68 s
100 (fc/2) 3.28 ms 13.11 ms 52.43 ms 209.72 ms 838.86 ms 3.36 s
101 (fc/4) 6.55 ms 26.21 ms 104.86 ms 419.43 ms 1.68 s 6.71 s
110 (fc/8) 13.11 ms 52.43 ms 209.72 ms 838.86 ms 3.36 s 13.42 s
Enable/disable control of the watchdog timer
0 Disable
1 Enable
Watchdog Timer Control Register
¥ 7 6 5 4 3 2 1 0
bit Symbol ⎯
Read/Write W
After reset ⎯
Function B1H : WDT disable code
4EH : WDT clear code
Fig. 14-4 Watchdog Timer Registers
Disable & clear of WDT
B1H WDT disable code
4EH WDT clear code
Others ⎯
Watchdog Timer