
ML62Q1000 Series User's Manual
Chapter 10 Watchdog Timer
FEUL62Q1000
10-6
10.2.3 Watchdog Timer Mode Register (WDTMOD)
This register is a special function register (SFR) to set the overflow period and the clear enabled period of the WDT
counter.
Address:
0xF012
Access:
R/W
Access size: 8 bit
Initial value: 0x06
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Word
-
Byte
-
WDTMOD
Bit
-
-
-
-
-
-
-
-
-
-
WOVF
1
WOVF
0
-
WDT2 WDT1 WDT0
R/W
R
R
R
R
R
R
R
R
W
W
R/W
R/W
W
R/W
R/W
R/W
Initial
value
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
Bit
No.
Bit name
Description
7, 6, 3
Reserved bits
-
5, 4
WOVF1,
WOVF0
These bits are used to set the mode of WDT.
00:
Window function disabled (initial value)
01:
Window function enabled mode 1 (the clear enabled period is approximately 75%
of the overflow period)
10:
Window function enabled mode 2 (the clear enabled period is approximately 50%
of the overflow period)
11:
Setting disabled (setting of window function enabled mode 2)
If the overflow period of the WDT counter is set to 62.5 ms or less in WDT2 to 0 bits, the
window function is disabled regardless of setting values of WOVF1 and WOVF0 bits.
2 to 0
WDT2 to
WDT0
These bits are used to set the overflow period (T
WOV
) of the WDT counter.
000: Approx. 7.8 ms
001: Approx. 15.6 ms
010: Approx. 31.3 ms
011: Approx. 62.5 ms
100: Approx. 125 ms
101: Approx. 500 ms
110: Approx. 2 s (initial value)
111: Approx. 8 s
[Note]
Ÿ
The overflow period set in WDT2 to WDT0 bits is the time when the WDTCLK is 1.024 kHz. If RC1K
oscillation is chosen for the WDTCLK clock, the frequency has a significant error.
Ÿ
If window function enabled mode 1 or window function enabled mode 2 is chosen, no WDT interrupt is
generated. A reset is generated in the first overflow.
Ÿ
The WDTMOD register is cleared through hardware resets such as the power-on reset.
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...