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XC6124E628ER

Description
Voltage Detector with Watchdog Function and ON/OFF Control (VDF=1.6V~5.0V)
File Size430KB,23 Pages
ManufacturerTOREX
Websitehttp://www.torex.co.jp/chinese/
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XC6124E628ER Overview

Voltage Detector with Watchdog Function and ON/OFF Control (VDF=1.6V~5.0V)

XC6121/XC6122
XC6123/XC6124
Series
■GENERAL
DESCRIPTION
ETR0209-009
Voltage Detector with Watchdog Function and ON/OFF Control (V
DF
=1.6V~5.0V)
The XC6121/XC6122/XC6123/XC6124 series are groups of high-precision, low current consumption voltage detectors with
watchdog functions incorporating CMOS process technology. The series consist of a reference voltage source, delay circuit,
comparator, and output driver. With the built-in delay circuit, the XC6121/XC6122/XC6123/XC6124 series’ ICs do not require
any external components to output signals with release delay time. The output type is V
DFL
low when detected. With the
XC6121/XC6122/XC6123/XC6124 series’ ICs, the EN/ENB pin can control ON and OFF of the watchdog functions. By setting
the EN/ENB pin to low or high level, the watchdog function can be OFF while the voltage detector remains operation. Since
the EN/ENB pin of the XC6122 and XC6124 series is internally pulled up to the V
IN
pin or pulled down to the V
SS
pin, the ICs
can be used with the EN/ENB pin left open, when the watchdog functions is used. The detect voltages are internally fixed
1.6V ~ 5.0V in increments of 100mV, using laser trimming technology. Six watchdog timeout period settings are available in a
range from 50ms to 1.6s. Five release delay time settings are available in a range from 3.13ms to 400ms.
■APPLICATIONS
●Microprocessor
watchdog monitoring
and reset circuits
●Memory
battery backup circuits
●System
power-on reset circuits
●Power
failure detection
■FEATURES
Detect Voltage Range
Hysteresis Width
Operating Voltage Range
Detect Voltage Temperature
Characteristics
: +100ppm/
O
C (TYP.)
Output Configuration
: N-channel open drain
Watchdog Pin
: Watchdog input
If watchdog input maintains ‘H’
or ‘L’ within the watchdog
timeout period, a reset signal is
output from the RESETB pin.
EN/ENB Pin
: When the EN/ENB pin voltage is
set to low or high level, the
watchdog function is forced off.
Release Delay Time
: 400ms, 200ms, 100ms, 50ms,
3.13ms (TYP.)
Watchdog Timeout Period
: 1.6s, 800ms, 400ms, 200ms,
100ms, 50ms (TYP.)
Package
: SOT-25, USP-6C
: 1.6V ~ 5.0V, +2%
(100mV increments)
: V
DFL
x 5% (TYP.)
: 1.0V ~ 6.0V
■TYPICAL
APPLICATION CIRCUIT
■TYPICAL
PERFORMANCE
CHARACTERISTICS
●Supply
Current vs. Input Voltage
XC6121½XC6124(V
DF
=2.7V)
14.0
Ta=85℃
(μA)
Supply Current: I
SS
12.0
10.0
8.0
6.0
4.0
2.0
0
0
1
2
3
4
Input Voltage: V
IN
(V)
5
6
Ta=25℃
Ta=-40℃
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