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STC823M

Description
UP Supervisor Circuits
File Size101KB,13 Pages
ManufacturerETC
Download Datasheet View All

STC823M Overview

UP Supervisor Circuits

Data Sheet
STC803/809/810-811/812/-823/824/825-6342/6343/6344/6345
µ
P Supervisor Circuits
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Features
• Precision supply-voltage monitor
- 4.63V (STC8xxL, STC634xL)
- 4.38V (STC8xxM, STC634xM)
- 3.08V (STC8xxT, STC634xT)
- 2.93V (STC8xxS, STC634xS)
- 2.63V (STC8xxR, STC634xR)
- 2.32V (STC8xxZ, STC634xZ)
- 2.20V (STC8xxY, STC634xY)
• 200ms reset pulse width
• Debounced CMOS-compatible manual-reset input
(811, 812, 823, 825, 6342-6344)
• Reset Output Signal for Watchdog and Power
Abnormal, Manual Reset
• Reset Push-Pull output (STC809,811,823,
824,825,6342,6345)
• Reset Open-Drain output (STC803/6343)
• Voltage monitor for power-fail or low battery warning
• Guaranteed RESET/RESET valid at V
CC
= 1.0V
Introduction
The STCxxx family microprocessor (µP)
supervisory circuits are targeted to improve reliability
and accuracy of power-supply circuitry in µP systems.
These devices reduce the complexity and number of
components required to monitor power-supply and
battery functions.
The main functions are:
1. Asserting reset output during power-up, power-
down and brownout conditions for µP system;
2. Detecting power failure or low-battery conditions
with a 1.25V threshold detector;
3. Watchdog functions;
4. Manual reset.
Applications
• Power-supply circuitry in µP systems
Ordering Information
Part No.
RESET output
Push-Pull
Open-Drain
-
-
-
-
-
-
-
-
-
-
RESET
output
(push-pull)
-
-
-
-
-
-
Manual Reset
Input
-
-
-
-
-
Power Fail
Detector
(1.25V)
-
-
-
-
-
-
-
-
Watchdog
Input
-
-
-
-
-
-
-
-
-
-
Package
1
2
3
4
5
6
7
8
9
10
11
12
STC803X
STC809X
STC810X
STC811X
STC812X
STC823X
STC824X
STC825X
STC6342X
STC6343X
STC6344X
STC6345X
-
-
-
-
-
SOT23-3
SOT23-5
SOT23-6
Suffix: X -- Monitored Voltage
Suffix X
Reset threshold (V)
STC
L
4.63
M
4.38
T
3.08
S
2.93
R
2.63
Z
2.32
Y
2.20
Ver1.0
1
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