tmp88ch40img TOSHIBA Semiconductor CORPORATION, tmp88ch40img Datasheet - Page 52
tmp88ch40img
Manufacturer Part Number
tmp88ch40img
Description
8 Bit Microcontroller
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP88CH40IMG.pdf
(148 pages)
- Current page: 52 of 148
- Download datasheet (2Mb)
6.2 Watchdog Timer Control
6. Watchdog Timer (WDT)
6.2.3 Watchdog Timer Disable
6.2.4 Watchdog Timer Interrupt (INTWDT)
Example :Disabling the watchdog timer
Note: If the watchdog timer is disabled during watchdog timer interrupt processing, the watchdog timer interrupt will never be
ister in other procedures causes a malfunction of the microcontroller.
by the binary-counter overflow.
master flag (IMF).
is already accepted, the new watchdog timer interrupt is processed immediately and the previous interrupt is
held pending. Therefore, if watchdog timer interrupts are generated continuously without execution of the
RETN instruction, too many levels of nesting may cause a malfunction of the microcontroller.
To disable the watchdog timer, set the register in accordance with the following procedures. Setting the reg-
Note:While the watchdog timer is disabled, the binary counters of the watchdog timer are cleared.
cleared. Therefore, clear the watchdog timer ( set the clear code (4EH) to WDTCR2 ) before disabling it, or disable the
watchdog timer a sufficient time before it overflows.
When WDTCR1<WDTOUT> is cleared to “0”, a watchdog timer interrupt request (INTWDT) is generated
A watchdog timer interrupt is the non-maskable interrupt which can be accepted regardless of the interrupt
When a watchdog timer interrupt is generated while the other interrupt including a watchdog timer interrupt
To generate a watchdog timer interrupt, set the stack pointer before setting WDTCR1<WDTOUT>.
1. Set the interrupt master flag (IMF) to “0”.
2. Set WDTCR2 to the clear code (4EH).
3. Set WDTCR1<WDTEN> to “0”.
4. Set WDTCR2 to the disable code (B1H).
DI
LD
LDW
EI
Table 6-1 Watchdog Timer Detection Time (Example: fc = 20 MHz)
WDTT
00
01
10
11
(WDTCR2), 04EH
(WDTCR1), 0B101H
DV1CK = 0
419.430 m
104.858 m
26.214 m
Watchdog Timer Detection Time[s]
1.678
Page 44
: IMF
: WDTEN
: IMF
: Clears the binary coutner
NORMAL Mode
←
←
0
1
←
0, WDTCR2
DV1CK = 1
838.861 m
209.715 m
52.429 m
3.355
←
Disable code
TMP88CH40IMG
Related parts for tmp88ch40img
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
MCU, MPU & DSP Development Tools Software
Manufacturer:
Toshiba
Part Number:
Description:
Toshiba Semiconductor [TOSHIBA IGBT Module Silicon N Channel IGBT]
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
Toshiba Semiconductor [SILICON N CHANNEL 1GBT]
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
Toshiba Semiconductor [GTR Module Silicon N Channel IGBT High Power Switching Applications Motor Control Applications]
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
Toshiba Semiconductor [Power Module]
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA GTR MODULE SILICON NPN TRIPLE DIFFUSED TYPE
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA GTR Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA Intelligent Power Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA INTELLIGENT POWER MODULE SILICON N CHANNEL LGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA IGBT Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA GTR MODULE SILICON N−CHANNEL IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA Intelligent Power Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA GTR Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA INTELLIGENT POWER MODULE
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA Intelligent Power Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet: