X4043 INTERSIL [Intersil Corporation], X4043 Datasheet - Page 20

• Manufacturer Part Number: X4043
• Description: CPU Supervisor with 4kbit EEPROM
• Manufacturer: INTERSIL [Intersil Corporation]

Watchdog Time Out For 2-Wire Interface
V
TRIP
SDA
SCL
WP
Set/Reset Conditions
t
TSU
(4043) RESET
Start
SCL
SDA
SCL
SDA
t
Minimum Sequence to Reset WDT
VPS
0
20
A0h
Start
(V
TRIP
)
7
Clockin (0 or 1)
Start
0
* all others reserved
01h*
03h* resets V
sets V
t
X4043, X4045
RSP
< t
V
WDO
CC
TRIP
TRIP
Start
7
V
P
0
WDT
Restart
00h
7
t
t
RST
THD
t
WC
t
WDO
t
VPH
t
RST
September 30, 2005
t
VPO
FN8118.1