MB3793 Datasheet, PDF (3/20 Pages) Fujitsu Component Limited. – POWER-VOLTAGE MONITORING IC WITH WATCHDOG TIMER

MB3793-42/30
s BLOCK DIAGRAM
To VCC of all blocks
CTP (3)
Output buffer
RESET
(1)
Comp. O
+
-
I1 ≈ 3µA
I2 ≈ 30µA
QS
RSFF2
QR
QS
RSFF1
QR
(5) _VCC
R1 ≈ 280 to
760 kΩ
INH (6)
CTW(2)
Watchdog timer
Pulse generator 1
CK1 (8)
Pulse generator 2
CK2 (7)
Reference
voltage
generator
VREF ≈ 1.24 V
Comp. S
-
VS
+
R1 ≈ 240 kΩ
To GND of all blocks
(4) GND
3