X9250
Circuit #3 SPICE Macro Model
EQUIVALENT A.C. LOAD CIRCUIT
5V
2.7V
R
TOTAL
R
R
L
1533Ω
H
C
L
C
H
C
W
10pF
SDA Output
10pF
25pF
100pF
100pF
R
W
AC TIMING
Symbol
Parameter
Min.
Max.
Unit
f
SSI/SPI clock frequency
SSI/SPI clock cycle time
SSI/SPI clock high time
SSI/SPI clock low time
Lead time
2.0
MHz
ns
ns
ns
ns
ns
ns
ns
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
SCK
CYC
t
500
200
200
250
250
50
t
WH
t
WL
t
LEAD
t
Lag time
LAG
t
SI, SCK, HOLD and CS input setup time
SI, SCK, HOLD and CS input hold time
SI, SCK, HOLD and CS input rise time
SI, SCK, HOLD and CS input fall time
SO output disable Time
SU
t
75
H
t
2
RI
t
2
FI
t
0
0
500
100
DIS
t
SO output valid time
V
t
SO output hold time
HO
t
SO output rise time
50
50
RO
t
SO output fall time
FO
t
HOLD time
400
100
100
HOLD
t
HOLD setup time
HSU
t
HOLD hold time
HH
t
HOLD low to output in high Z
HOLD high to output in low Z
Noise suppression time constant at SI, SCK, HOLD and CS inputs
CS deselect time
100
100
TBD
HZ
t
LZ
T
I
t
2
0
0
CS
t
WP, A0 and A1 setup time
WP, A0 and A1 hold time
WPASU
t
WPAH
Characteristics subject to change without notice. 12 of 21
REV 1.1.5 1/31/03
www.xicor.com
XICOR [ XICOR INC. ]
