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參數(shù)資料
| 型號： | ASM8500 |
| 廠商： | ALLIANCE SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Low Power 5V / 3.3V uP Reset Active LOW, Open - Drain Output |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封裝： | PLASTIC, SOT-89 |
| 文件頁數(shù)： | 3/7頁 |
| 文件大小： | 191K |
| 代理商： | ASM8500 |
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Notice: The information in this document is subject to change without notice
Low Power 5V / 3.3V μP Reset Active LOW, Open - Drain Output
ASM8500
rev 1.0
November 2003
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 V
CC
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.
~
t
RPU
V
CCTP
(MIN)
~
V
OH
V
CCTP
V
CCTP
(MAX)
t
R
V
CC
RESET
Figure 1: Timing Diagram: Power-Up
~
V
CCTP
(MIN)
V
CCTP
V
CCTP
(MAX)
t
F
V
CC
t
RPD
V
OL
RESET
Figure 2: Timing Diagram: Power-Down
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