( DataSheet : www.DataSheet4U.com )
MITSUMI
System Reset (with built-in watchdog timer) MM1135, MM1136
System Reset (...
( DataSheet : www.DataSheet4U.com )
MITSUMI
System Reset (with built-in watchdog timer) MM1135, MM1136
System Reset (with built-in watchdog timer)
Monolithic IC MM1135, MM1136
Outline
These ICs were developed to drive low
voltage batteries, and have a watchdog timer with built-in microcomputer reset
voltage detection circuit and low battery detection circuit. A single reference
voltage is used for low battery
voltage detection and microcomputer reset
voltage . detection, so detection
voltage difference is uniform ( = . 0.2V). Further, there is a built-in watchdog timer for operation diagnosis, which prevents the system from running wild by generating an intermittent reset pulse during system mis-operation.
Features
1. Accurate
voltage drop detection
voltage 1. Low battery detection 3.4V±3% 2. Power supply
voltage detection 3.2V±3% 3. Detection
voltage error 0.2V±20mV 1-2 4. Hysteresis Both 50mV typ. 2. Watchdog function stop pin (can be made to function only as reset IC during VCC rise) 3. Low current consumption 150µA typ.
Package
SOP-8C (MM1135XF, MM1136XF)
Applications
1. 3V cordless telephones 2. Various types of small, handy equipment
Series Table
Model MM1135 MM1136 VSLB 3.4V VSLR 3.2V TPR 100mS 100mS TWD 10mS 100mS TWR 2mS 2mS
TPR : Reset hold time during VCC rise TWD : Timer monitoring time TWR : Reset time VSLB : Battery check detection
voltage VSLR : Reset detection
voltage
*C =0.02µF
T
www.DataSheet4U.com
MITSUMI
System Reset (with built-in watchdog ti...