X4645 INTERSIL [Intersil Corporation], X4645 Datasheet - Page 17

• Manufacturer Part Number: X4645
• Description: CPU Supervidor with 64K EEPROM
• Manufacturer: INTERSIL [Intersil Corporation]

Power-Up and Power-Down Timing
RESET Output Timing
Notes: (8) This parameter is periodically sampled and not 100% tested.
SDA vs. RESET Timing
Symbol
V
t
t
V
PURST
RPD
RVALID
t
t
R
TRIP
F
(8)
(8)
(8)
RESET
(X4643)
RESET
(X4645)
V
CC
RESET
SDA
SCL
0 Volts
Reset Trip Point Voltage, X4643/5-4.5A
Reset Trip Point Voltage, X4643/5
Reset Trip Point Voltage, X4643/5-2.7A
Reset Trip Point Voltage, X4643/5-2.7
Power-up Reset Time Out
V
V
V
Reset Valid V
CC
CC
CC
Detect to Reset/Output
Fall Time
Rise Time
V
TRIP
17
t
CC
R
Note: All inputs are ignored during the active reset period (t
t
RSP
t
t
RSP
PURST
<t
WDO
Parameter
X4643, X4645
t
RPD
t
RSP
>t
WDO
t
PURST
Min.
4.25
2.85
2.55
100
100
100
4.5
1
t
RST
RST
).
Typ.
4.62
4.38
2.92
2.62
t
250
RSP
>t
WDO
V
V
RVALID
t
RVALID
F
Max.
4.75
400
500
4.5
3.0
2.7
t
RST
March 29, 2005
Unit
ms
ns
µs
µs
V
V
FN8123.0