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參數(shù)資料
| 型號(hào)： | ASM1232LPU-T |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁(yè)數(shù)： | 10/13頁(yè) |
| 文件大小： | 377K |
| 代理商： | ASM1232LPU-T |
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ASM1232LP/LPS
Rev. 2 | Page 6 of 13 | www.onsemi.com
Watchdog Timer and ST Input
A watchdog timer stops and restarts a microprocessor
that is
“hung-up”. The μP must toggle the ST input within
a set period (as selectable through TD input) to verify
proper software execution. If the ST is not toggled low
within the minimum timeout period, reset signals become
active. In power-up after the supply voltage returns to an
in-tolerance condition, the reset signal remains active for
250ms minimum, allowing the power supply and system
microprocessor to stabilize. ST pulses as short as 20ns
can be detected.
Timeouts periods of approximately 150ms, 610ms or 1,200ms are selected through the TD pin.
TD Voltage level
Watchdog Time-out Period
(ms)
Min
Nom
Max
GND
62.5
150
250
Floating
250
610
1000
VCC
500
1200
2000
The watchdog timer cannot be disabled. It must be strobed with a high-to-low transition to avoid watchdog timeout and reset.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ASM1233A | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Power, 3.3V, uP Reset, Active LOW, Open-Drain Output |
| ASM1233A-10 | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Low Power, 5V/3.3V, μP Reset, Active LOW, Open-Drain Output |
| ASM1233A-15 | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Low Power, 5V/3.3V, μP Reset, Active LOW, Open-Drain Output |
| ASM1233A-5 | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Low Power, 5V/3.3V, μP Reset, Active LOW, Open-Drain Output |
| ASM1233AZ-10 | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Low Power, 5V/3.3V, μP Reset, Active LOW, Open-Drain Output |
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