21.4 Operation when malfunction (runaway) is detected
21.4.1 INTWDT interrupt generation
In the Figure 21-2 shows the case that INTWDT interrupt generates (WDMOD<RESCR>="0").
When an overflow of the binary counter occurs, INTWDT interrupt generates. It is a factor of non-maska-
ble interrupt (NMI). Thus CPU detects non-maskable interrupt and performs the countermeasure program.
The factor of non-maskable interrupt is the plural. CGNMIFLG identifies the factor of non-maskable inter-
rupts. In the case of INTWDT interrupt, CGNMIFLG<NMIFLG0> is set.
When INTWDT interrupt generates, simultaneously the watchdog timer out (WDTOUT) output "Low".
WDTOUT becomes "High" by the watchdog timer clearing that is writing clear code 0x4E to the WDCR reg-
ister.
Note:
This product does not have the watchdog timer output pin(WDTOUT).
n
Overflow
0
WDT counter
WDT clear
INTWDT
Write of a clear code
WDTOUT
Figure 21-2 INTWDT interrupt generation
TMPM3V6/M3V4
21. Watchdog Timer(WDT)
21.4 Operation when malfunction (runaway) is detected
Page 436
2019-02-06
Содержание TMPM3V4
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Страница 2: ... 2019 Toshiba Electronic Devices Storage Corporation ...
Страница 7: ...Revision History Date Revision Comment 2019 02 06 1 First Release ...
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Страница 52: ...TMPM3V6 M3V4 3 Processor Core 3 6 Exclusive access Page 30 2019 02 06 ...
Страница 148: ...TMPM3V6 M3V4 7 Exceptions 7 6 Exception Interrupt Related Registers Page 126 2019 02 06 ...
Страница 178: ...TMPM3V6 M3V4 9 Input Output port 9 2 Block Diagrams of Ports Page 156 2019 02 06 ...
Страница 206: ...TMPM3V6 M3V4 10 16 bit Timer Event Counters TMRB 10 7 Applications using the Capture Function Page 184 2019 02 06 ...
Страница 232: ...TMPM3V6 M3V4 11 Universal Asynchronous Receiver Transmitter Circuit UART 11 4 Operation Description Page 210 2019 02 06 ...
Страница 354: ...TMPM3V6 M3V4 14 Synchronous Serial Port SSP 14 6 Frame Format Page 332 2019 02 06 ...
Страница 419: ...TMPM3V6 M3V4 Page 397 2019 02 06 ...
Страница 420: ...TMPM3V6 M3V4 16 Analog Digital Converter ADC 16 6 Timing chart of AD conversion Page 398 2019 02 06 ...
Страница 462: ...TMPM3V6 M3V4 21 Watchdog Timer WDT 21 5 Control register Page 440 2019 02 06 ...
Страница 510: ...TMPM3V6 M3V4 22 Flash Memory Operation 22 4 Programming in the User Boot Mode Page 488 2019 02 06 ...
Страница 538: ...TMPM3V6 M3V4 25 Electrical Characteristics 25 7 Recommended Oscillation Circuit Page 516 2019 02 06 ...
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