ML620Q503/Q504 User’s Manual
Chapter 10 Watchdog Timer
FEUL620Q504 10–4
10.2.3 Watchdog Timer Mode Register (WDTMOD)
Address: 0F00FH
Access: R/W
Access size: 8 bits
Initial value: 82H
7
6
5
4
3
2
1
0
WDTMOD
HLTEN
–
–
–
–
–
WDT1
WDT0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value
1
0
0
0
0
0
1
0
WDTMOD is a special function register to set the overflow period of theWDT counter.
This register requires byte access always.
Description of Bits
•
WDT1-0
(bits 1 to 0)
These bits are used to select an overflow period of the watchdog timer.
The WDT1 and WDT0 bits set a overflow period (T
WOV
) of the WDT counter. It is selectable from the following.
WDT1
WDT0
Description
0
0
4096 counts at LSCLK (125 ms*)
0
1
16384 counts at LSCLK (500 ms*)
1
0
65536 counts at LSCLK (2 s*) (initial value)
1
1
262144 counts at LSCLK (8 s*)
*: where LSCLK = 32.768kHz.
•
HLTEN
(bits 7)
Set WDT cuount up fuction mode during DEEP-HALT mode.
HLTEN
Description
0
Stop counting up during DEEP-HALT mode
1
Keep counting up during DEEP-HALT mode
(
initial value
)
Summary of Contents for LAPIS SEMICONDUCTOR ML620Q503
Page 2: ...ML620Q503 Q504 User s Manual Issue Date Apr 16 2015 FEUL620Q504 01...
Page 18: ...Chapter 1 Overview...
Page 32: ...Chapter 2 CPU and Memory Space...
Page 44: ...Chapter 3 Reset Function...
Page 50: ...Chapter 4 Power Management...
Page 70: ...Chapter 5 Interrupts...
Page 134: ...Chapter 6 Clock Generation Circuit...
Page 161: ...Chapter 7 Time Base Counter...
Page 170: ...Chapter 8 Timers...
Page 183: ...Chapter 9 Function Timer FTM...
Page 231: ...Chapter 10 Watchdog Timer...
Page 239: ...Chapter 11 Synchronous Serial Port SSIO...
Page 251: ...Chapter 12 Synchronous Serial Port with FIFO SSIOF...
Page 283: ...Chapter 13 UART...
Page 303: ...Chapter 14 UART with FIFO UARTF...
Page 327: ...Chapter 15 I2 C Bus Interface...
Page 344: ...Chapter 16 Port XT...
Page 350: ...Chapter 17 Port 0...
Page 361: ...Chapter 18 Port 1...
Page 368: ...Chapter 19 Port2...
Page 379: ...Chapter 20 Port 3...
Page 395: ...Chapter 21 Port 4...
Page 410: ...Chapter 22 Port 5...
Page 426: ...Chapter 23 Melody Driver...
Page 439: ...Chapter 24 RC Oscillation type A D Converter RC ADC...
Page 462: ...Chapter 25 Successive Approximation Type A D Converter SA ADC...
Page 479: ...Chapter 26 Analog Comparator...
Page 489: ...Chapter 27 Flash Memory Control...
Page 505: ...Chapter 28 Voltage Level Supervisor VLS...
Page 517: ...Chapter 29 LLD circuit...
Page 519: ...Chapter 30 On Chip Debug Function...
Page 522: ...Appendixes...
Page 552: ...Revision History...