MB3773 Datasheet, PDF (6/31 Pages) Fujitsu Component Limited. – Power Supply Monitor with Watch-Dog Timer

MB3773 Basic Operation
V_CC
V_CC
C_T
RESET
RESET
CK
GND
MB3773
Logic Circuit
RESET
RESET
CK
TPR (ms) =: 1000 · CT (F)
TWD (ms) =: 100 · CT (F)
TWR (ms) =: 20 · CT (F)
Example : C_T  0.1 μF
T_RR (ms) =: 100 (ms)
T_WD (ms) =: 10 (ms)
T_WR (ms) =: 2 (ms)
VCC
VSH
VSL
0.8 V
CK
TCK
CT
RESET
TPR
TWD
TWR
(1) (2)
(3)(4)(5) (5)
(6) (7)
(8)(9)
Document Number: 002-08513 Rev. *A
TPR
(10)
(11) (12)
Page 6 of 31