Section 12 Watchdog Timer (WDT)
Rev. 1.00 Mar. 12, 2008 Page 414 of 1178
REJ09B0403-0100
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
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 bus
WDT_1
[Legend]
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 12.1 Block Diagram of WDT
Содержание H8S Family
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Страница 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Страница 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Страница 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Страница 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Страница 588: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 1 00 Mar 12 2008 Page 540 of 1178 REJ09B0403 0100...
Страница 632: ...Section 17 Synchronous Serial Communication Unit SSU Rev 1 00 Mar 12 2008 Page 584 of 1178 REJ09B0403 0100...
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Страница 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
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Страница 1230: ...H8S 2472 Group H8S 2462 Group Hardware Manual...