NJU7295 Datasheet, PDF (1/10 Pages) New Japan Radio – SYSTEM RESET IC WITH DELAY CIRCUIT

NJU7295
SYSTEM RESET IC WITH DELAY CIRCUIT
■ GENERAL DESCRIPTION
The NJU7295 is a system reset IC with built-in delay circuit that
monitors the status of a power line, and outputs a reset signal to
the microcomputer.
The NJU7295 outputs a reset signal when exceeds the detection
voltage. Therefore it is possible to control the microcomputer by
detecting a rising edge of a power line.
Delay times are fixed internally and those are set in each of rising
and falling.
It is possible to monitor multiplex power line by combination of
NJU7295 because output voltage V_OUT is kept High level when
EXT Pin is Low level by connecting with other NJU7295.
Detection voltage’s default value is 1.0V. It can be adjusted to
desired voltage by the resistor divider.
In addition, a hysteresis voltage can be set arbitrarily by inserting a
resistor between the V_IN pin and the HYS pin.
■ PACKAGE OUTLINE
NJU7295F1
■ FEATURES
● High Precision Detection Voltage
● Detection Voltage
● Reset Output Logic
● Delay Circuit (Internal Fixed type)
● Ultra Low Quiescent Current
● Supply Voltage Range
● External Input Pin
● Adjustable Hysteresis Voltage
● Output Type
● Package
1.0% (Ta=25 C)
1.0V (default) and adjustable with external resistor
Reset Low output when V_IN pin is detection voltage or more
*If required reset low output when V_IN pin is detection voltage or below, see the
NJU7296.
Rising / Falling independent setting
1.7µA typ.
1.5 to 5.5V
While inputting low signal, keep output High level
CMOS output
SOT-23-6-1
■ PIN CONFIGURATION
V_IN 1
V_SS 2
EXT 3
6 HYS
5 V_OUT
4 V_DD
Pin Function
1. V_IN
2. V_SS
3. EXT
：Input Voltage Pin
：Ground Pin
：External Input Pin
4. V_DD
5. V_OUT
6. HYS
：Supply Voltage Pin
：Output Pin
：External Resistor Pin for setting Hysteresis Voltage
Ver.2015-11-11
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