mm1075 Mitsumi Electronics, Corp., mm1075 Datasheet - Page 4

• Manufacturer Part Number: mm1075
• Description: Ic For System Reset With Built-in Watchdog Timer
• Manufacturer: Mitsumi Electronics, Corp.

MITSUMI
Block Diagram
T
WD
Note 1 : CP=0.1µF approx.
Note 2 : C ~ - 1000pF
Note 3 : The watchdog timer can be stopped by connecting the RCT pin to
Note 4 : T
(mS)
100
80
60
40
20
0
Note : The above graph shows data for when C
GND. (Then it functions as a voltage detection circuit.)
resistor. The recommended range for RCT is 100kΩ~R
50k 100k
PR
T
and T
WD
is proportionate to C
WD
Graph 1 R
can be varied by pulling up the R
1M
IC for System Reset (with built-in watchdog timer) MM1075
CT
& Monitoring Time
T
R
. Refer to the calculation formula for T
CT
10M
T
=0.1µF.
CT
pin to V
100M
CT
CC
pin OPEN.
with a
∞
(Ω)
WD
above.