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参数资料
型号： TMP86CH47IUG
厂商： Toshiba Corporation
英文描述： Zener Diode; Application: General; Pd (mW): 500; Vz (V): 17.5 to 18.3; Condition Iz at Vz (mA): 5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: DO-35
中文描述： 8位微控制器
文件页数： 68/160页
文件大小： 1627K
代理商： TMP86CH47IUG
Page 60
7. Watchdog Timer (WDT)
7.2 Watchdog Timer Control
TMP86CH47IUG
7.2.3
Watchdog Timer Disable
To disable the watchdog timer, set the register in accordance with the following procedures. Setting the reg-
ister in other procedures causes a malfunction of the microcontroller.
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).
Note:While the watchdog timer is disabled, the binary counters of the watchdog timer are cleared.
7.2.4
Watchdog Timer Interrupt (INTWDT)
When WDTCR1<WDTOUT> is cleared to “0”, a watchdog timer interrupt request (INTWDT) is generated
by the binary-counter overflow.
A watchdog timer interrupt is the non-maskable interrupt which can be accepted regardless of the interrupt
master flag (IMF).
When a watchdog timer interrupt is generated while the other interrupt including a watchdog timer interrupt
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 generate a watchdog timer interrupt, set the stack pointer before setting WDTCR1<WDTOUT>.
Example :Disabling the watchdog timer
DI
: IMF
←
0
LD
(WDTCR2), 04EH
: Clears the binary counter
LDW
(WDTCR1), 0B101H
: WDTEN
←
0, WDTCR2
←
Disable code
Table 7-1 Watchdog Timer Detection Time (Example: fc = 16.0 MHz, fs = 32.768 kHz)
WDTT
Watchdog Timer Detection Time[s]
NORMAL1/2 mode
SLOW
mode
DV7CK = 0
DV7CK = 1
00
2.097
4
4
01
524.288 m
1
1
10
131.072 m
250 m
250 m
11
32.768 m
62.5 m
62.5 m
Example :Setting watchdog timer interrupt
LD
SP, 023FH
: Sets the stack pointer
LD
(WDTCR1), 00001000B
: WDTOUT
←
0
相关PDF资料
PDF描述
TMP86CH47SUG Zener Diode; Application: General; Pd (mW): 500; Vz (V): 18.1 to 19.0; Condition Iz at Vz (mA): 5; C (pF) max: -; Condition VR at C (V): &#160; ESD (kV) min: -; Package: DO-35
TMP86CH49FG Zener Diode; Application: General; Pd (mW): 500; Vz (V): 18.8 to 19.7; Condition Iz at Vz (mA): 2; C (pF) max: -; Condition VR at C (V): &#160; ESD (kV) min: -; Package: DO-35
TMP86CH72FG Zener Diode; Application: General; Pd (mW): 500; Vz (V): 19.5 to 20.4; Condition Iz at Vz (mA): 2; C (pF) max: -; Condition VR at C (V): &#160; ESD (kV) min: -; Package: DO-35
TMP86CK74AFG Zener Diode; Application: General; Pd (mW): 500; Vz (V): 20.2 to 21.1; Condition Iz at Vz (mA): 2; C (pF) max: -; Condition VR at C (V): &#160; ESD (kV) min: -; Package: DO-35
TMP86CM23AUG Zener Diode; Application: General; Pd (mW): 500; Vz (V): 20.9 to 21.9; Condition Iz at Vz (mA): 2; C (pF) max: -; Condition VR at C (V): &#160; ESD (kV) min: -; Package: DO-35
相关代理商/技术参数
参数描述
TMP86CH47SUG 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:8 Bit Microcontroller
TMP86CH47U 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:CMOS 8 BIT MICROCONTROLLER
TMP86CH47UG 制造商:Toshiba America Electronic Components 功能描述:MCU 8BIT TLCS-870 CISC 16KB ROM 5V 44PQFP - Rail/Tube
TMP86CH49FG 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:8 Bit Microcontroller
TMP86CH72FG 制造商:Toshiba America Electronic Components 功能描述:TLCS870/C 16K ROM , VFT - Rail/Tube
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