Section 15 Watchdog Timer (WDT)
Rev. 3.00 Jan 25, 2006 page 374 of 872
REJ09B0286-0300
WOVI0
(Interrupt request signal)
Internal NMI
(Interrupt request signal
*
2
)
RESO
signal
*
1
Internal reset signal
*
1
TCNT_0
TCSR_0
φ
/2
φ
/64
φ
/128
φ
/512
φ
/2048
φ
/8192
φ
/32768
φ
/131072
Internal clock
Overflow
Interrupt
control
Reset
control
WOVI1
(Interrupt request signal)
Internal reset signal
*
1
RESO
signal
*
1
TCNT_1
TCSR_1
φ
/2
φ
/64
φ
/128
φ
/512
φ
/2048
φ
/8192
φ
/32768
φ
/131072
Clock
Clock
selection
Internal clock
Bus
interface
Module bus
Internal bus
WDT_1
Legend:
TCSR_0 : Timer control/status register_0
TCNT_0 : Timer counter_0
TCSR_1 : Timer control/status register_1
TCNT_1 : Timer counter_1
Notes: 1. The
RESO
signal outputs the low level signal when the internal reset signal is generated due to a TCNT
overflow of either WDT_0 or WDT_1. The internal reset signal first resets the WDT in which the overflow
has occurred first.
2. The internal NMI interrupt signal can be independently output from either WDT_0 or WDT_1.
The interrupt controller does not distinguish the NMI interrupt request from WDT_0 from that from WDT_1.
Internal NMI
(Interrupt request signal
*
2
)
φ
SUB/2
φ
SUB/4
φ
SUB/8
φ
SUB/16
φ
SUB/32
φ
SUB/64
φ
SUB/128
φ
SUB/256
Overflow
Interrupt
control
Reset
control
Clock
Clock
selection
Bus
interface
Module bus
Internal bus
WDT_0
Figure 15.1 Block Diagram of WDT
Содержание H8S/2158
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Страница 198: ...Section 6 Bus Controller Rev 3 00 Jan 25 2006 page 144 of 872 REJ09B0286 0300...
Страница 326: ...Section 10 8 Bit PWM Timer PWM Rev 3 00 Jan 25 2006 page 272 of 872 REJ09B0286 0300...
Страница 440: ...Section 15 Watchdog Timer WDT Rev 3 00 Jan 25 2006 page 386 of 872 REJ09B0286 0300...
Страница 606: ...Section 17 I 2 C Bus Interface IIC Rev 3 00 Jan 25 2006 page 552 of 872 REJ09B0286 0300...
Страница 742: ...Section 19 Multimedia Card Interface MCIF Rev 3 00 Jan 25 2006 page 688 of 872 REJ09B0286 0300...
Страница 744: ...Section 20 Encryption Operation Circuit DES and GF Rev 3 00 Jan 25 2006 page 690 of 872 REJ09B0286 0300...
Страница 750: ...Section 21 D A Converter Rev 3 00 Jan 25 2006 page 696 of 872 REJ09B0286 0300...
Страница 768: ...Section 22 A D Converter Rev 3 00 Jan 25 2006 page 714 of 872 REJ09B0286 0300...
Страница 770: ...Section 23 RAM Rev 3 00 Jan 25 2006 page 716 of 872 REJ09B0286 0300...
Страница 824: ...Section 26 Clock Pulse Generator Rev 3 00 Jan 25 2006 page 770 of 872 REJ09B0286 0300...
Страница 844: ...Section 27 Power Down Modes Rev 3 00 Jan 25 2006 page 790 of 872 REJ09B0286 0300...
Страница 878: ...Section 28 List of Registers Rev 3 00 Jan 25 2006 page 824 of 872 REJ09B0286 0300...
Страница 926: ...Index Rev 3 00 Jan 25 2006 page 872 of 872 REJ09B0286 0300...