Section 14
Watchdog Timer (WDT)
Rev. 1.00 Apr. 28, 2008 Page 397 of 994
REJ09B0452-0100
Bit Bit
Name
Initial
Value R/W Description
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 cycle for
φ
= 20 MHz and
φ
SUB = 32.768 kHz
is enclosed in parentheses.
When PSS = 0:
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)
When PSS = 1:
000:
φ
SUB/2 (cycle: 15.6 ms)
001:
φ
SUB/4 (cycle: 31.3 ms)
010:
φ
SUB/8 (cycle: 62.5 ms)
011:
φ
SUB/16 (cycle: 125 ms)
100:
φ
SUB/32 (cycle: 250 ms)
101:
φ
SUB/64 (cycle: 500 ms)
110:
φ
SUB/128 (cycle: 1 s)
111:
φ
SUB/256 (cycle: 2 s)
Notes: 1. Only 0 can be written, to clear the flag.
2. When OVF is polled with the interval timer interrupt disabled, OVF = 1 must be read at
least twice.
Содержание H8S/2100 Series
Страница 2: ...Rev 1 00 Apr 28 2008 Page ii of xxvi...
Страница 54: ...Section 1 Overview Rev 1 00 Apr 28 2008 Page 28 of 994 REJ09B0452 0100...
Страница 92: ...Section 2 CPU Rev 1 00 Apr 28 2008 Page 66 of 994 REJ09B0452 0100...
Страница 158: ...Section 5 Interrupt Controller Rev 1 00 Apr 28 2008 Page 132 of 994 REJ09B0452 0100...
Страница 244: ...Section 8 8 Bit PWM Timer PWMU Rev 1 00 Apr 28 2008 Page 218 of 994 REJ09B0452 0100...
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...
Страница 706: ...Section 20 LPC Interface LPC Rev 1 00 Apr 28 2008 Page 680 of 994 REJ09B0452 0100...
Страница 752: ...Section 21 FSI Interface Rev 1 00 Apr 28 2008 Page 726 of 994 REJ09B0452 0100...
Страница 774: ...Section 23 RAM Rev 1 00 Apr 28 2008 Page 748 of 994 REJ09B0452 0100...
Страница 1008: ...Section 28 Electrical Characteristics Rev 1 00 Apr 28 2008 Page 982 of 994 REJ09B0452 0100...
Страница 1020: ...Rev 1 00 Apr 28 2008 Page 994 of 994 REJ09B0452 0100...
Страница 1023: ......
Страница 1024: ...H8S 2117R Group Hardware Manual...