X4003-05 Datasheet, PDF (13/16 Pages) Intersil Corporation – Selectable watchdog timer

Power-Up and Power-Down Timing
V_CC
0V
V_TRIP
t_PURST
t_R
RESET
X4003, X4005
t_RPD
t_PURST
t_F
V_RVALID
RESET
V_RVALID
RESET/RESET Output Timing
SYMBOL
PARAMETER
V_TRIP
Reset Trip Point Voltage, X4003-4.5A, X4005-4.5A
Reset Trip Point Voltage, X4003, X4005
Reset Trip Point Voltage, X4003-2.7A, X4005-2.7A
Reset Trip Point Voltage, X4003-2.7, X4005-2.7
Reset Trip Point Voltage, X4003-1.8, X4005-1.8
t_PURST
t_RPD
t_F
t_R
V_RVALID
Power-up Reset Time-out
V_CC Detect to Reset Output
V_CC Fall Time
V_CC Rise Time
Reset Valid V_CC
SDA vs RESET/RESET Timing
SCL
MIN
TYP
MAX
UNIT
4.5
4.62
4.75
V
4.25
4.38
4.5
V
2.85
2.92
3.0
V
2.55
2.62
2.7
V
1.7
1.75
1.8
V
100
200
400
ms
500
ns
10
ms
0.1
ns
1
V
SDA
RESET
RESET
t_CST
t_WDO
RESET/RESET Output Timing
SYMBOL
PARAMETER
t_WDO
Watchdog Time-out Period
WD1 = 1, WD0 = 1 (factory setting)
WD1 = 1, WD0 = 0
WD1 = 0, WD0 = 1
WD1 = 0, WD0 = 0
t_CST
CS Pulse Width to Reset the Watchdog
t_RST
Reset Time-out
13
t_RST
t_WDO
t_RST
MIN
TYP
OFF
100
200
450
600
1
1.4
400
100
200
MAX
300
800
2
400
UNIT
ms
ms
sec
ns
ms
FN8113.2
June 30, 2008