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MB3793-42 Datasheet, PDF (3/25 Pages) Fujitsu Component Limited. – POWER-VOLTAGE MONITORING IC WITH WATCHDOG TIMER
■ BLOCK DIAGRAM
MB3793-42
To VCC of all blocks
I1 ≅ 3 µA
I2 ≅ 30 µA
5 VCC
CTP 3
Output
buffer
RESET 1
Comp. O
+
−
INH 6
CTW 2
Watchdog
timer
Pulse generator 1
CK1 8
Pulse generator 2
CK2 7
QS
RSFF2
QR
QS
RSFF1
QR
R1 ≅
590 kΩ
Reference
voltage
generator
VREF ≅ 1.24 V
Comp. S
−
VS
+
R2 ≅
240 kΩ
To GND of all blocks
4 GND
3