X4043 Datasheet, PDF (18/25 Pages) Intersil Corporation – CPU Supervisor with 4kbit EEPROM

X4043/45
Watchdog Time Out For 2-Wire Interface
Start
Clockin (0 or 1)
t_RSP
Start
< t_WDO
SCL
SDA
(4043) RESET
Start
Minimum Sequence to Reset WDT
SCL
SDA
WDT
Restart
t_RST t_WDO t_RST
V_TRIP Set/Reset Conditions
(V_TRIP)
t_TSU
WP
t_VPS
V_CC
V_P
SCL
0
70
70
t_THD
t_VPO
t_VPH
7
SDA
A0h
00h
t_WC
Start
01h* sets V_TRIP
03h* ^{resets V}TRIP
* all others reserved
REV 1.1.17 9/14/01
www.xicor.com
Characteristics subject to change without notice. 18 of 25