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參數(shù)資料
| 型號(hào)： | ASM1834AU-T |
| 廠商： | ALLIANCE SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Dual 5V and 3.3V uP Power Supply Supervisor with Manual Reset |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | MICRO,SO-8 |
| 文件頁(yè)數(shù)： | 3/10頁(yè) |
| 文件大?。?/td> | 256K |
| 代理商： | ASM1834AU-T |
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Notice: The information in this document is subject to change without notice
Dual 5V and 3.3V μP Power Supply Supervisor with Manual Reset
ASM1834/A/D
rev 1.3
April 2005
Detailed Description
Operation Power Monitor
The ASM1834 supervisors simultaneously detect out-of-
tolerance power supply conditions on both 3.3V and 5V
power supplies. If the voltages at 5VIN or 3.3VIN are outside
the tolerance band, the reset for the falling supply voltage
becomes active. When the monitored supply returns to an in-
tolerance state, the reset remains active for approximately
350ms before returning to the inactive state.
On power-up, the reset signals are kept active for
approximately 350ms after the power supply voltages have
reached the selected tolerance. This allows the power supply
and microprocessor to stabilize before the reset is removed.
All supply current for the ASM1834 devices is drawn from the
input (5V
IN
or 3.3V
IN
) with the highest voltage level. The
outputs draw current from their input supplies 5V
IN
and
3.3V
IN
.
Reset Signal Polarity and Output Stage Structure
The ASM1834 and the ASM1834A supervisors have active
LOW reset signals. The ASM1834D reset outputs are active
HIGH.
The ASM1834 and the ASM1834D have CMOS push-pull
output stages. The ASM1834A has open drain reset outputs.
Part #
RESET
Polarity
Output Stage
Configuration
ASM1834
LOW
Push-Pull
ASM1834U
LOW
Push-Pull
ASM1834S
LOW
Push-Pull
ASM1834A
LOW
Open Drain
ASM1834AU
LOW
Open Drain
ASM1834AS
LOW
Open Drain
ASM1834D
HIGH
Push-Pull
ASM1834DU
HIGH
Push-Pull
ASM1834DS
HIGH
Push-Pull
~
~
~
V
OH
V
OL
t
RPU
RESET
RESET
V
INTP
(MIN)
V
INTP
(MAX)
V
INTP
t
R
V
IN
Figure 1: Timing Diagram: Power Up (ASM1834D only)
~
~
~
V
OH
V
OL
V
INTP
(MAX)
V
INTP
V
INTP
(MIN)
RESET
RESET
t
F
V
IN
t
RPD
Figure 2: Timing Diagram: Power Down (ASM1834D only)
RESET Slews
with V
CC
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ASM1834D | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Dual 5V and 3.3V μP Power Supply Supervisor with Manual Reset |
| ASM1834DF | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Dual 5V and 3.3V uP Power Supply Supervisor with Manual Reset |
| ASM1834DF-T | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Dual 5V and 3.3V uP Power Supply Supervisor with Manual Reset |
| ASM1834DS | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:Dual 5V and 3.3V μP Power Supply Supervisor with Manual Reset |
| ASM1834DSF | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:Dual 5V and 3.3V uP Power Supply Supervisor with Manual Reset |
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