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PDF NJU7295 Data sheet ( Hoja de datos )
| Número de pieza | NJU7295 | |
| Descripción | SYSTEM RESET IC | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NJU7295 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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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 VOUT 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 VIN 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 VIN pin is detection voltage or more
*If required reset low output when VIN 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
VIN 1
VSS 2
EXT 3
6 HYS
5 VOUT
4 VDD
Pin Function
1. VIN
2. VSS
3. EXT
：Input Voltage Pin
：Ground Pin
：External Input Pin
4. VDD
5. VOUT
6. HYS
：Supply Voltage Pin
：Output Pin
：External Resistor Pin for setting Hysteresis Voltage
Ver.2015-11-11
-1-
1 page  
■ FUNCTION DESCRIPTION
(1) Basic Operation
Input Voltage
(VIN)
Detection Voltage
(VDET)
VSS
Output Voltage
(VOUT)
VSS
Delay Time1
(td1)
NJU7295
Release Voltage *
*In case of not setting
the hysteresis voltage.
(1) When input voltage VIN is increased and
exceed the detection voltage VDET, after the
delay time which is fixed for each version, the
output voltage VOUT is switched from High
level to Low level.
(2) In the state of VIN is above the release
voltage VDET, the reset state is maintained.
The default release voltage VDET is same as
detection voltage VDET, although can be set
the hysteresis by inserting a resistor between
the VIN pin and the HYS pin.
Delay Time2
(td2)
(3) When VIN falls and it reaches release voltage
VDET, after the delay time which is fixed for
each version, VOUT is switched from Low
level to High level.
Ver.2015-11-11
-5-
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet NJU7295.PDF ] | |
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