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Teilenummer | MM1136 |
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Beschreibung | (MM1135 / MM1136) System Reset (with built-in watchdog timer) Monolithic IC | |
Hersteller | Mitsumi Electronics | |
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Gesamt 6 Seiten ( 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
TPR : Reset hold time during VCC rise
TWD : Timer monitoring time
TWR : Reset time
VSLB : Battery check detection voltage
VSLR : Reset detection voltage
VSLR
3.2V
TPR
100mS
100mS
TWD
10mS
100mS
TWR
2mS
2mS
*CT=0.02µF
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MITSUMI
Measuring Circuit
System Reset (with built-in watchdog timer) MM1135, MM1136
Timing Chart
VSHB
VCC VSLB
VSMR
VSLR
0.8V
CK
TCKW
TCK
CT
RESET
BC
TPR TWR TWD
RCT
Undefined
Basic Circuit Diagram
6 Page | ||
Seiten | Gesamt 6 Seiten | |
PDF Download | [ MM1136 Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
MM1134 | (MM1xxx) System Reset | Mitsumi Electric |
MM1135 | (MM1135 / MM1136) System Reset (with built-in watchdog timer) Monolithic IC | Mitsumi Electronics |
MM1136 | (MM1135 / MM1136) System Reset (with built-in watchdog timer) Monolithic IC | Mitsumi Electronics |
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www.Datenblatt-PDF.com | 2020 | Kontakt | Suche |