X40420 XICOR [Xicor Inc.], X40420 Datasheet - Page 18

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

X40420/X40421 – Preliminary
A.C. CHARACTERISTICS
Note: (1) Cb = total capacitance of one bus line in pF.
TIMING DIAGRAMS
Bus Timing
REV 1.2.14 7/12/02
Symbol
t
t
t
t
t
t
t
HD:DAT
SU:STO
SU:STA
HD:STA
SU:DAT
SDA OUT
SU:WP
HD:WP
t
t
f
t
HIGH
LOW
t
BUF
t
SCL
Cb
t
DH
AA
t
t
SDA IN
IN
R
F
SCL
t
SU:STA
SCL Clock Frequency
Pulse width Suppression Time at inputs
SCL LOW to SDA Data Out Valid
Time the bus free before start of new transmission
Clock LOW Time
Clock HIGH Time
Start Condition Setup Time
Start Condition Hold Time
Data In Setup Time
Data In Hold Time
Stop Condition Setup Time
Data Output Hold Time
SDA and SCL Rise Time
SDA and SCL Fall Time
WP Setup Time
WP Hold Time
Capacitive load for each bus line
t
HD:STA
t
F
t
SU:DAT
Parameter
t
HIGH
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t
LOW
t
HD:DAT
t
R
t
AA
Characteristics subject to change without notice.
t
DH
20 +.1Cb
20 +.1Cb
Min.
100
0.1
1.3
1.3
0.6
0.6
0.6
0.6
0.6
50
50
0
0
400kHz
(1)
(1)
t
BUF
Max.
400
300
300
400
t
0.9
SU:STO
18 of 25
Unit
kHz
pF
ns
µs
µs
µs
µs
µs
µs
ns
µs
µs
ns
ns
ns
µs
µs