CAT5251 Datasheet, PDF (6/15 Pages) Catalyst Semiconductor – Quad Digitally Programmable Potentiometer (DPP) with 256 Taps and SPI Interface

CAT5251
A.C. CHARACTERISTICS
Over recommended operating conditions unless otherwise stated.
SYMBOL PARAMETER
Min Typ Max
t_SU
Data Setup Time
50
t_H
Data Hold Time
50
t_WH
SCK High Time
125
t_WL
SCK Low Time
125
f_SCK
t_LZ
t_RI(1)
t_FI(1)
t_HD
t_CD
Clock Frequency
HOLD to Output Low Z
Input Rise Time
Input Fall Time
HOLD Setup Time
HOLD Hold Time
DC
3
50
2
2
100
100
t_V
Output Valid from Clock Low
200
t_HO
Output Hold Time
0
t_DIS
Output Disable Time
t_HZ
HOLD to Output High Z
t_CS
CS High Time
t_CSS
CS Setup Time
t_CSH
CS Hold Time
250
100
250
250
250
NOTE:
(1) This parameter is tested initially and after a design or process change that affects the parameter.
UNITS
ns
ns
ns
ns
MHz
ns
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
POWER UP TIMING ⁽¹⁾⁽²⁾
Over recommended operating conditions unless otherwise stated.
Symbol Parameter
tPUR Power-up to Read Operation
t_PUW Power-up to Write Operation
Min Typ
Max
1
1
Units
ms
ms
NOTE:
(1) This parameter is tested initially and after a design or process change that affects the parameter.
(2) t_PUR and t_PUW are the delays required from the time V_CC is stable until the specified operation can be initiated.
XDCP TIMING
Symbol Parameter
t_WRPO Wiper Response Time After Power Supply Stable
tWRL Wiper Response Time After Instruction Issued
Min Max Units
5
10 µs
5
10 µs
Test
Conditions
C_L = 50pF
Document No. 2017, Rev. D
6