X4003 Datasheet, PDF (13/18 Pages) Xicor Inc. – CPU Supervisor

X4003/X4005
Power-Up and Power-Down Timing
V_CC
V_TRIP
0 Volts
t_R
t_PURST
RESET
t_RPD
t_PURST
t_F
V_RVALID
RESET
V_RVALID
RESET/RESET Output Timing
Symbol
V_TRIP
t_PURST
t_RPD⁽⁸⁾
t_F⁽⁸⁾
t_R⁽⁸⁾
V_RVALID
Parameter
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
Power-up reset time out
V_CC detect to reset/output
V_CC fall time
V_CC rise time
Reset valid V_CC
Note: (8) This parameter is periodically sampled and not 100% tested.
SDA vs. RESET/RESET Timing
SCL
Min.
4.5
4.25
2.85
2.55
1.7
100
10
0.1
1
Typ.
4.62
4.38
2.92
2.62
1.75
200
Max.
4.75
4.5
3.0
2.7
1.8
400
500
Unit
V
V
V
ms
ns
ms
ns
V
SDA
RESET
RESET
t_CST
t_WDO
t_RST
t_WDO
t_RST
REV 1.1.3 4/30/02
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Characteristics subject to change without notice. 13 of 18