X9279
EQUIVALENT A.C. LOAD CIRCUIT
SPICE Macromodel
5V
3V
1533Ω
R
867Ω
TOTAL
R
R
L
H
SDA pin
SDA pin
C
C
W
C
L
L
10pF
100pF
100pF
25pF
10pF
R
W
AC TIMING
Symbol
Parameter
Min.
Max.
Units
kHz
ns
f
t
t
t
t
t
t
t
t
t
t
t
t
Clock Frequency
Clock Cycle Time
Clock High Time
Clock Low Time
Start Setup Time
Start Hold Time
Stop Setup Time
400
SCL
2500
600
1300
600
600
600
100
30
CYC
ns
HIGH
LOW
SU:STA
HD:STA
SU:STO
SU:DAT
HD:DAT
R
ns
ns
ns
ns
SDA Data Input Setup Time
SDA Data Input Hold Time
SCL and SDA Rise Time
SCL and SDA Fall Time
ns
ns
300
300
0.9
ns
ns
F
SCL Low to SDA Data Output Valid Time
SDA Data Output Hold Time
µs
ns
AA
0
50
1200
0
DH
T
Noise Suppression Time Constant at SCL and SDA inputs
Bus Free Time (Prior to Any Transmission)
A0, A1 Setup Time
ns
I
t
t
t
ns
BUF
ns
SU:WPA
HD:WPA
A0, A1 Hold Time
0
ns
HIGH-VOLTAGE WRITE CYCLE TIMING
Symbol Parameter
Typ.
Max.
Units
t
High-voltage write cycle time (store instructions)
5
10
ms
WR
Characteristics subject to change without notice. 16 of 24
REV 1.1.7 2/6/03
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XICOR [ XICOR INC. ]
