X9251 Xicor, X9251 Datasheet - Page 17

• Manufacturer Part Number: X9251
• Description: Quad Digitally-Controlled (XDCP) Potentiometer
• Manufacturer: Xicor

X9251
EQUIVALENT A.C. LOAD CIRCUIT
AC TIMING
REV 1.3.3 2/10/04
f
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
T
t
t
t
SCK
CYC
WH
WL
LEAD
LAG
SU
H
RI
FI
DIS
V
HO
RO
FO
HOLD
HSU
HH
HZ
LZ
CS
WPASU
WPAH
Symbol
I
SPI clock frequency
SPI clock cycle rime
SPI clock high rime
SPI clock low time
Lead time
Lag time
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
SO output valid time
SO output hold time
SO output rise time
SO output fall time
HOLD time
HOLD setup time
HOLD hold time
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
WP, A0 setup time
WP, A0 hold time
SO pin
V
CC
2kΩ
2kΩ
10pF
Parameter
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R
H
10pF
C
SPICE Macromodel
L
R
Characteristics subject to change without notice.
TOTAL
R
W
25pF
Min.
C
500
200
200
250
250
400
100
100
50
50
W
0
0
2
0
0
10pF
C
L
Max.
250
200
100
100
100
100
10
R
2
2
2
L
Units
MHz
µs
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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