X40420 XICOR [Xicor Inc.], X40420 Datasheet - Page 21

• Manufacturer Part Number: X40420
• Description: Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch
• Manufacturer: XICOR [Xicor Inc.]

X40420/X40421 – Preliminary
Watchdog Time Out For 2-Wire Interface
V
REV 1.2.14 7/12/02
TRIPX
SDA
SCL
WDO
t
Set/Reset Conditions
TSU
WDO
SCL
SCL
SDA
SDA
Minimum Sequence to Reset WDT
Start
t
VPS
A0h
0
Start
(V
TRIPX
Clockin (0 or 1)
Start
01h*
09h*
)
7
sets V
sets V
0
t
* all others reserved
RSP
TRIP1
TRIP2
< t
WDO
www.xicor.com
V
CC
03h*
0Bh* resets V
Start
/V2MON
resets V
7
TRIP1
TRIP2
V
WDT
Restart
P
0
00h
Characteristics subject to change without notice.
7
t
RST
t
WDO
t
THD
t
WC
t
RST
t
VPH
t
VPO
21 of 25