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參數資料
| 型號： | ASM8500EUR-45F-T |
| 廠商： | ALLIANCE SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PSSO3 |
| 封裝： | ROHS COMPLIANT, PLASTIC, SOT-89, 3 PIN |
| 文件頁數： | 3/9頁 |
| 文件大?。?/td> | 138K |
| 代理商： | ASM8500EUR-45F-T |
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Notice: The information in this document is subject to change without notice
Low Power 5V / 3.3V P Reset Active LOW, Open - Drain Output
ASM8500
rev 1.7
May 2005
Application Information
Operation - Power Monitor
The
ASM8500
detects
out-of-tolerance
power
supply
conditions. It resets a processor during power-up, power-
down and issues a reset to the system processor when the
monitored power supply voltage is below the reset threshold.
When an out-of-tolerance VCC voltage is detected, the
RESET signal is asserted. On power-up, RESET is kept
active (LOW) for approximately 1.5ms after the power supply
voltage has reached the selected tolerance. This allows the
power supply and microprocessor to stabilize before RESET
is released.
~~
tRPU
VCCTP (MIN)
~~
VOH
VCCTP
VCCTP (MAX)
tR
VCC
RESET
Figure 1: Timing Diagram: Power-Up
~ ~
VCCTP (MIN)
VCCTP
VCCTP (MAX)
tF
VCC
tRPD
VOL
RESET
Figure 2: Timing Diagram: Power-Down
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