Section 12 Watchdog Timer (WDT)
Rev.2.00 Jun. 28, 2007 Page 440 of 666
REJ09B0311-0200
Bit Bit
Name
Initial
Value R/W Description
5 TME 0 R/W
Timer
Enable
When this bit is set to 1, TCNT starts counting. When this
bit is cleared, TCNT stops counting and is initialized to
H'00.
4, 3
All
1
R
Reserved
These are read-only bits and cannot be modified.
2
1
0
CKS2
CKS1
CKS0
0
0
0
R/W
R/W
R/W
Clock Select 2 to 0
Select the clock source to be input to TCNT. The overflow
cycle for P
φ
= 20 MHz is indicated in parentheses.
000: Clock P
φ
/2 (cycle: 25.6
µ
s)
001: Clock P
φ
/64 (cycle: 819.2
µ
s)
010: Clock P
φ
/128 (cycle: 1.6 ms)
011: Clock P
φ
/512 (cycle: 6.6 ms)
100: Clock P
φ
/2048 (cycle: 26.2 ms)
101: Clock P
φ
/8192 (cycle: 104.9 ms)
110: Clock P
φ
/32768 (cycle: 419.4 ms)
111: Clock P
φ
/131072 (cycle: 1.68 s)
Note:
*
Only 0 can be written to this bit, to clear the flag.
Содержание H8SX/1650
Страница 2: ...Rev 2 00 Jun 28 2007 Page ii of xxii...
Страница 106: ...Section 4 Exception Handling Rev 2 00 Jun 28 2007 Page 84 of 666 REJ09B0311 0200...
Страница 142: ...Section 5 Interrupt Controller Rev 2 00 Jun 28 2007 Page 120 of 666 REJ09B0311 0200...
Страница 326: ...Section 8 I O Ports Rev 2 00 Jun 28 2007 Page 304 of 666 REJ09B0311 0200...
Страница 470: ...Section 12 Watchdog Timer WDT Rev 2 00 Jun 28 2007 Page 448 of 666 REJ09B0311 0200...
Страница 546: ...Section 13 Serial Communication Interface SCI Rev 2 00 Jun 28 2007 Page 524 of 666 REJ09B0311 0200...
Страница 566: ...Section 14 A D Converter Rev 2 00 Jun 28 2007 Page 544 of 666 REJ09B0311 0200...
Страница 574: ...Section 16 RAM Rev 2 00 Jun 28 2007 Page 552 of 666 REJ09B0311 0200...
Страница 584: ...Section 17 Clock Pulse Generator Rev 2 00 Jun 28 2007 Page 562 of 666 REJ09B0311 0200...
Страница 638: ...Section 19 List of Registers Rev 2 00 Jun 28 2007 Page 616 of 666 REJ09B0311 0200...
Страница 668: ...Section 20 Electrical Characteristics Rev 2 00 Jun 28 2007 Page 646 of 666 REJ09B0311 0200...
Страница 676: ...Appendix Rev 2 00 Jun 28 2007 Page 654 of 666 REJ09B0311 0200...
Страница 688: ...Rev 2 00 Jun 28 2007 Page 666 of 666 REJ09B0311 0200...
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Страница 692: ...H8SX 1650 Group Hardware Manual...