Section 14
Watchdog Timer (WDT)
Rev. 1.00 Apr. 28, 2008 Page 395 of 994
REJ09B0452-0100
Bit Bit
Name
Initial
Value R/W Description
3 RST/
NMI
0
R/W
Reset or NMI
Selects to request an internal reset or an NMI interrupt
when TCNT has overflowed.
0: An NMI interrupt is requested
1: An internal reset is requested
2
1
0
CKS2
CKS1
CKS0
0
0
0
R/W
R/W
R/W
Clock Select 2 to 0
Selects the clock source to be input to TCNT. The
overflow frequency for
φ
= 20 MHz is enclosed in
parentheses.
000:
φ
/2 (frequency: 25.6
µ
s)
001:
φ
/64 (frequency: 819.2
µ
s)
010:
φ
/128 (frequency: 1.6 ms)
011:
φ
/512 (frequency: 6.6 ms)
100:
φ
/2048 (frequency: 26.2 ms)
101:
φ
/8192 (frequency: 104.9 ms)
110:
φ
/32768 (frequency: 419.4 ms)
111:
φ
/131072 (frequency: 1.68 s)
Note:
*
Only 0 can be written, to clear the flag.
Содержание H8S/2100 Series
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Страница 92: ...Section 2 CPU Rev 1 00 Apr 28 2008 Page 66 of 994 REJ09B0452 0100...
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Страница 330: ...Section 10 16 Bit Timer Pulse Unit TPU Rev 1 00 Apr 28 2008 Page 304 of 994 REJ09B0452 0100...
Страница 354: ...Section 11 16 Bit Cycle Measurement Timer TCM Rev 1 00 Apr 28 2008 Page 328 of 994 REJ09B0452 0100...
Страница 380: ...Section 12 16 Bit Duty Period Measurement Timer TDP Rev 1 00 Apr 28 2008 Page 354 of 994 REJ09B0452 0100...
Страница 416: ...Section 13 8 Bit Timer TMR Rev 1 00 Apr 28 2008 Page 390 of 994 REJ09B0452 0100...
Страница 494: ...Section 15 Serial Communication Interface SCI Rev 1 00 Apr 28 2008 Page 468 of 994 REJ09B0452 0100...
Страница 612: ...Section 18 I 2 C Bus Interface IIC Rev 1 00 Apr 28 2008 Page 586 of 994 REJ09B0452 0100...
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Страница 1008: ...Section 28 Electrical Characteristics Rev 1 00 Apr 28 2008 Page 982 of 994 REJ09B0452 0100...
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