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PDF MM1099 Data sheet ( Hoja de datos )
| Número de pieza | MM1099 | |
| Descripción | System Reset (Built-in Watch Dog Timer) | |
| Fabricantes | MITSUMI ELECTRIC | |
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MITSUMI
System Reset (Built-in Watch Dog Timer) MM1099
System Reset (Built-in Watch Dog Timer)
Monolithic IC MM1099
Outline
The function of this IC series MM1099 is to accurately reset systems, a generating reset signal at the time of
instantaneous supply voltage off or lowering in varied CPU and other logic system.
Further, with the watch dog timer built-in it can diagnose the operation of the system, intermittently
generating reset pulses when they operate erroneously to prevent runaway.
Features
1. Built-in watch dog timer
2. Low current consumption
130µA TYP.
3. Low operating threshold voltage
VCC=0.8V
4. Watch dog stop function (RCT terminal)
5. Long clock monitoring time
TPR (POWER ON) : TWD (clock monitoring)=1 : 1
6. Fewer outer components
Package
DIP-8B (MM1099AD, MM1099BD)
SOP-8C (MM1099AF, MM1099BF)
SIP-8A (MM1099AS, MM1099BS)
Applications
1. Reset circuit for microcomputers, CPU and MPU.
2. Reset circuit for logic circuitry.
3. Monitoring of microcomputer system, etc.
Pin Assignmemt
8765
1234
SOP-8C/DIP-8B
1 TC
2 N.C
3 CK
4 GND
5 VCC 1 2 3 4 5 6 7 8
6 RCT
7 VS
-----------------------------------------------------------
8 RESET
SIP-8A
1 TC
2 N.C
3 CK
4 GND
5 VCC
6 RCT
7 VS
-----------------------------------------------------------
8 RESET
1 page  
MITSUMI
Measuring Circuits
Measuring Circuit 1 (DC)
System Reset (Built-in Watch Dog Timer) MM1099
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
------------------------------------------------------
VCCL
supply voltage to ensure RESET
ON OFF ON
ON
ON
ON
A 0V 2V 0V
VCT
0V
2V
2V
1V
0V
0V
2V
2V
2V
2V
1V
IV
0V
I RESET-----------------------------------------------
VM, IM
- ICC
- VO1, CRT1
- VO1, CRT1
- ICK, VCK
- ICK
- ICK
-1µA
VO1
0.5mA VO1
1.0mA VO1
- IO1
- ITC
- ITC
Notes
VO=1V
- VO1, VCC
Measuring Circuit 2 SW & Power Supply Table
Item
Symbol SW1 SW2
VCC input pulse width TP1 C
3.6V
B
2.8V
VCCA
T1
CK input pulse width TCKW A B
-
CK input cycle
TCK A B
Watchdog timer
monitoring time
TWD A
A
Reset time
TWR A
for watchdog timer
A
Reset hold time for
TPR B A A
power supply rise
Output delay time
from VCC
TPD C
3.6V
A
0V
Output rise time TR A A
Output fall time
TF A A
-
-
-
-
-
-
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 MM1099.PDF ] | |
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