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參數(shù)資料
| 型號： | TCM812 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 4-Pin Microcontroller Reset Monitors |
| 中文描述： | 4引腳單片機(jī)復(fù)位監(jiān)控器 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大小： | 258K |
| 代理商： | TCM812 |
2002 Microchip Technology Inc.
DS21615B-page 1
M
TCM811/TCM812
Features
Precision V
DD
Monitor for 2.0V, 2.8V, 3.0V, 3.3V,
5.0V Nominal Supplies
Manual Reset Input
140 msec Minimum RESET Output Duration
RESET Output Valid to V
DD
= 1.0V (TCM811)
Low 6 μA (typ.) Supply Current
V
DD
Transient Immunity
Small 4-Pin SOT-143 Package
No External Components
Replacement for MAX811/812 and Offers a Lower
Threshold Voltage Option
Push-Pull RESET Output
Temperature Range:
- Commercial (C)
-40°C to +85°C
Applications
Computers
Embedded Systems
Battery Powered Equipment
Critical Microcontroller Power Supply Monitoring
Typical Application Circuit
General Description
The TCM811 and TCM812 are cost effective system
supervisory circuits designed to monitor V
DD
in digital
systems and provide a reset signal to the host control-
ler when necessary. A manual reset input is provided
to override the reset monitor and is suitable for use as
a push-button reset. No external components are
required.
The reset output is driven active within 20 μsec (5 μsec
for F version) of V
DD
falling through the reset voltage
threshold. RESET is maintained active for a minimum
of 140 msec after V
DD
rises above the reset threshold.
The TCM812 has an active high RESET output while
the TCM811 has an active low RESET output. The out-
put of the TCM811 is valid down to V
= 1V. Both
devices are available in a 4-Pin SOT-143 package,
specified with a temperature range of -40°C to +85°C.
The TCM811/TCM812 are optimized to reject fast tran-
sient glitches on the V
line. A low supply current of
6 μA (V
DD
= 3.3V) makes these devices ideal for battery
powered applications.
Package Types:
TCM811
V
DD
V
DD
V
DD
RESET
RESET
INPUT
(Active Low)
GND
GND
MR
PUSH
BUTTON
PIC
Microcontroller
4
3
2
0.1μF
V
DD
TCM811
RESET
TCM812
(RESET)
GND
T
T
1
2
3
4
MR
o
SOT-143
4-Pin Microcontroller Reset Monitors
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| TCM812AFVRCTR | 制造商:Microchip Technology Inc 功能描述: |
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