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PDF MM1095 Data sheet ( Hoja de datos )
| Número de pieza | MM1095 | |
| Descripción | System Reset (Built-in Watch Dog Timer) | |
| Fabricantes | MITSUMI ELECTRIC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MM1095 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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MITSUMI
System Reset (with built-in watchdog timer) MM1095
System Reset (with built-in watchdog timer)
Monolithic IC MM1095
Outline
This IC functions in a variety of CPU systems and other logic systems to generate a reset signal and reset the
system accurately during momentary interruption or lowering of power supply voltage.
It also has a built-in watchdog timer for operation diagnosis. This prevents the system from running wild by
generating an intermittent reset pulse during system mis-operation.
Features
1. Built-in watchdog timer
2. Low minimum operating voltage
3. Low operating limit voltage
4. Watchdog stop function (RCT pin)
5. Few external parts
100µA typ.
Vcc=0.8V
Package
DIP-8B (MM1095AD, MM1095BD)
SOP-8C (MM1095AF, MM1095BF)
SIP-8A (MM1095AS, MM1095BS)
Applications
1. Reset circuits in microcomputers, CPUs and MPUs
2. Logic circuit reset circuits
3. Microcomputer system monitoring, etc.
Pin Assignment
8765
1234
SOP-8C/DIP-8B
1 TC
2 NC
3 CK
4 GND
5 VCC
6 RCT
7 VS
------------------------------------------
8 RESET
12345678
SIP-8A
1 TC
2 NC
3 CK
4 GND
5 VCC
6 RCT
7 VS
------------------------------------------
8 RESET
1 page  
MITSUMI
Measuring Circuits
Measuring Circuit 1(DC)
System Reset (with built-in watchdog timer) MM1095
Measuring Circuit 2 (AC)
Measuring Circuit 1 SW & Power Supply Table
Item
Symbol SW1 SW2 SW3 SW4 SW5 SW6 SW7 VCC VCK
Consumption current ICC OFF OFF OFF ON ON ON A 3.6V 3.6V
Detection voltage
VSL OFF OFF ON ON ON ON
VSH OFF OFF ON ON ON ON
A 3.6V 3V 0V
A 3V 3.6V 0V
CK input threshold VTH OFF OFF OFF ON ON ON A 3.6V 0V 3V
CK input current
IIH OFF OFF OFF ON ON ON
IIL OFF OFF OFF ON ON ON
A 3.6V 3.6V
A 3.6V 0V
Output voltage (High) VOH ON OFF ON ON ON ON A 3.6V 3.6V
VOL1 ON ON ON ON ON ON
Output voltage (Low)
VOL2 ON ON ON ON ON ON
A 3.6V 3.6V
A 3.6V 3.6V
Output sink current IOL1 OFF ON ON ON ON ON B 3.6V 3.6V
CT charge current 1 ITC1 OFF OFF OFF ON ON OFF A 3.6V -
CT charge current 2 ITC2 OFF OFF OFF ON ON OFF A 3.6V -
Minimum operating power
--------------------------------------------------
supply voltage to ensure RESET
VCCL
ON OFF ON
ON
ON
ON
A 0V 2V 0V
VCT
0V
2V
2V
1V
0V
0V
2V
2V
2V
2V
1V
1V
0V
I RESET-------------------------------------------------------
-
-
-
-
-
-
-1µA
0.5mA
1.0mA
-
-
-
-
VM, IM Notes
ICC
VO1, CRT1
VO1, CRT1
ICK, VCK
ICK
ICK
VO1
VO1
VO1
IO1 VO=1V
ITC
ITC
VO1, VCC
Measuring Circuit 2 SW & Power Supply Table
Item
Symbol SW1 SW2
VCC input pulse width TP1 C
3.6V
B
2.5V
VCCA
T1
CK input pulse width TCKW A B
-
CK input cycle
TCK A B
Watchdog timer
monitoring time
Reset time for
watchdog timer
Reset hold time for
power supply rise
Output delay time
from VCC
Output rise time
Output fall time
TWD A
TWR A
TPR B A
TPD C
TR A
TF A
A
A
A
A
A
A
3.6V
0V
-
-
-
-
-
-
VCC
1.4V
-
0V
1.4V
3.6V
0V
1.4V
3.6V
0V
3.6V
3.6V
3.6V
-
3.6V
3.6V
VCKA
T2
T2
or
T2
-
-
-
-
-
-
VCK
T3
-
-
T2
T3
-
3.6V
3.6V
3.6V
CRT
CRT1
CRT2
CRT1
CRT2
CRT1
CRT2
CRT1
CRT2
CRT1
CRT2
CRT1
CRT2
Notes
T1=8µS
T2=3µS
T3=20µS
0V CRT1
3.6V CRT1
3.6V CRT1
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet MM1095.PDF ] | |
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