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參數(shù)資料
| 型號： | ASM1815-5F |
| 廠商： | ALLIANCE SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Low Power, 3.3V/3.0V uP Reset Active LOW, Push-Pull Output |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBCY3 |
| 封裝： | LEAD FREE, TO-92, 3 PIN |
| 文件頁數(shù)： | 3/9頁 |
| 文件大?。?/td> | 235K |
| 代理商： | ASM1815-5F |
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Notice: The information in this document is subject to change without notice
Low Power, 3.3V/3.0V μP Reset
ASM1815
rev 1.4
February 2005
Application Information
Operation - Power Monito
r
The ASM1815 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 approximatley 150ms after the power supply
voltage has reached the selected tolerance. This allows the
power supply and microprocessor to stablize before RESET
is released.
Output Conditions
The ASM1815 active LOW reset signal is valid as long as
V
CC
remains below 1.2V. The RESET output on the
ASM1815 uses a push-pull drive stage that can maintain a
valid output below 1.2V. To sink current with V
CC
below 1.2V,
a resistor can be connected from the reset pin (RESET) to
Ground (see Figure 3). This configuration will give a valid
value on the RESET output with V
CC
approaching 0V. During
both power up and down, this configuration will draw current
when the RESET is in the high state. A value of 100k
should be adequate to maintain a valid connection.
Figure 3: RESET Valid to 0V V
CC
Microprocessor
RESET
RESET
ASM1815
100k
~
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ASM1815R-5 | Low Power, 3.3V/3.0V uP Reset Active LOW, Push-Pull Output |
| ASM1815R-5F | Low Power, 3.3V/3.0V uP Reset Active LOW, Push-Pull Output |
| ASM1815R-20 | Low Power, 3.3V/3.0V uP Reset Active LOW, Push-Pull Output |
| ASM1815R-20F | Low Power, 3.3V/3.0V uP Reset Active LOW, Push-Pull Output |
| ASM1816R-10 | Low Power 3.3V/3.0V uP Reset, Active LOW, Open-Drain Output |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ASM1815-5F/T | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Power, 3.3V/3.0V uP Reset Active LOW, Push-Pull Output |
| ASM1815R-10 | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Power, 3.3V/3.0V uP Reset Active LOW, Push-Pull Output |
| ASM1815R-10/T | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Power, 3.3V/3.0V uP Reset Active LOW, Push-Pull Output |
| ASM1815R-10F | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Power, 3.3V/3.0V uP Reset Active LOW, Push-Pull Output |
| ASM1815R-10F/T | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Low Power, 3.3V/3.0V uP Reset Active LOW, Push-Pull Output |
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