MITSUMI
System Reset with Delay Time Circuit PST596~598
System Reset with Delay Time Circuit
Monolithic IC PST596~598 Series
July 21, 2000
Outline
This IC functions in a variety of CPU systems and other logic systems, to detect supply voltage and reset the system
accurately when the power is turned on or interrupted. It incorporates a fixed-delay time generation circuit. In
particular, this IC is a system reset IC which realizes ultra-small size and low current consumption.
Features
1. Fixed delay time setting by counter timer
2. Low operating limit voltage
3. Hysteresis voltage provided for detection voltage
4. Low current consumption
5. 3 models are available for different delay times.
6. Each model has 10 detection voltage ranks.
0.65V typ.
50mV typ.
ICCH =15µA typ.
PST596 50ms
PST597 100ms
PST598 200ms
C : 4.5V typ.
D : 4.2V typ.
E : 3.9V typ.
F : 3.6V typ.
G : 3.3V typ.
H : 3.1V typ.
I : 2.9V typ.
J : 2.7V typ.
K : 2.5V typ.
L : 2.3V typ.
Package
SOT-25A (PST59
N) (with manual reset pin)
*The box represents a rank of detection voltage.
Applications
1.
2.
3.
4.
5.
6.
Reset circuits for microcomputers, CPUs and MPUs
Reset circuits for logic circuits
Battery voltage check circuits
Back-up power supply switching circuits
Level detection circuits
Mechanical reset circuits
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
