MITSUMI
System Reset (Built-in Watch Dog Timer) MM1099
Pin Description
Pin No. Pin name
TC
N.C
CK
GND
V
CC
RCT
V
S
RESET
Clock input terminal Inputs the clock from the logic system.
Ground terminal
Voltage detection
MM1099A
3.2V MM1099B
4.2V
OPEN, Stop
connect to GND
Watchdog timer stop pin Operation modes: Operation
Detect voltage variable terminal
Reset output pin (low output)
Variable terminals T
WD
, T
WR
and T
PR
The time for T
WD
, T
WR
and T
PR
to be
determined by the external capacitor.
2
3
4
5
6
7
8
Function
T
PR
(mS) = 5000 C
T
(µF)
T
WD
(mS) = 500 C
T
(µF)
T
WR
(mS) = 100
C
T
(µF)
1
Absolute Maximum Ratings
Item
Power supply voltage
CK pin input voltage
V
S
pin input voltage
Voltage applied to RCT pin
----------------------------------------------------
Symbol
V
CC
max.
V
CK
V
VS
V
RCT
V
OH
Pd
T
STG
Rating
-0.3~+10
-0.3~V
CC
+0.3 ( < +10)
=
-0.3~V
CC
+0.3 ( < +10)
=
-0.3~V
CC
+0.3 ( < +10)
=
-0.3~V
CC
+0.3 ( < +10)
=
300
-40~+125
Units
V
V
V
V
V
mW
°
C
Voltage applied to RESET pin
Allowable loss
Storage temperature
Recommended Operating Conditions
Item
Power supply voltage
----------------------------------------------------
Symbol
V
CC
I
OL
T
WD
t
FC
, t
RC
C
T
T
OP
Rating
+2.2~+7.0
0~1.0
0.1~1000
<100
0.0002~2
-25~+75
Units
V
mA
mS
µS
µF
°
C
RESET sync current
Clock monitoring time setting
Clock rise and fall times
TC pin capacitance
Operating temperature
MITSUMI [ MITSUMI ELECTRONICS, CORP. ]
