X40430_06 Datasheet, PDF (23/26 Pages) Intersil Corporation – Triple Voltage Monitor with Integrated CPU Supervisor

X40430, X40431, X40434, X40435
LOW VOLTAGE AND WATCHDOG TIMINGS PARAMETERS (@25°C, V_CC = 5V) (CONTINUED)
Symbol
Parameters
t_in1
t_WDO
Pulse width for MR
Watchdog Timer Period:
WD1 = 0, WD0 = 0
WD1 = 0, WD0 = 1
WD1 = 1, WD0 = 0
WD1 = 1, WD0 = 1 (factory setting)
t_RST1
Watchdog Reset Time Out Delay
WD1 = 0, WD0 = 0
WD1 = 0, WD0 = 1
t_RST2 Watchdog Reset Time Out Delay WD1 = 1, WD0 = 0
t_RSP Watchdog timer restart pulse width
Notes: (1) V_CC = 5V at 25°C.
(2) Values based on characterization data only.
Min Typ ⁽¹⁾
5
1.4⁽²⁾
200⁽²⁾
25
OFF
100 200
12.5 25
1
Max
300
37.5
Watchdog Time Out For 2-Wire Interface
Start
Clockin (0 or 1)
t_RSP
Start
< t_WDO
SCL
Unit
µs
s
ms
ms
ms
ms
µs
SDA
WDO
Start
Minimum Sequence to Reset WDT
SCL
SDA
WDT
Restart
t_RST t_WDO t_RST
23
FN8251.1
May 24, 2006