CAT5251 Datasheet, PDF (11/15 Pages) Catalyst Semiconductor – Quad Digitally Programmable Potentiometer (DPP) with 256 Taps and SPI Interface

Global Transfer Data Register (DR) to Wiper Control Register (WCR) ⁽¹⁾
DEVICE ADDRESSES
INSTRUCTION
0 1 0 1 0 0 A A 0 0 0 1 R R 0 0 _{¯C¯S¯}
10
10
CAT5251
Global Transfer Wiper Control Register (WCR) to Data Register (DR)
DEVICE ADDRESSES
INSTRUCTION
¯C¯S¯ ^{0 1 0 1}
0
0
A
1
A
0
1 0 0 0RR
10
0
0
¯C¯S¯
High Voltage
Write Cycle
Transfer Wiper Control Register (WCR) to Data Register (DR)
DEVICE ADDRESSES
INSTRUCTION
¯C¯S¯ ^{0 1 0 1 0}
0
A
1
A
0
1 1 1 0RR
10
P
1
P
0
¯C¯S¯
High Voltage
Write Cycle
Transfer Data Register (DR) to Wiper Control Register (WCR)
DEVICE ADDRESSES
INSTRUCTION
¯C¯S¯ ^{0 1 0 1 0 0 A A 1 1 0 1 R R P P} ¯C¯S¯
10
10 1 0
Increment (I)/Decrement (D) Wiper Control Register (WCR)
DEVICE ADDRESSES
INSTRUCTION
¯C¯S¯ ^{0 1 0 1 0 0 A A 0 0 1 0 0 0 P P I/D I/D}
10
10
DATA
...
I/D I/D _{¯C¯S¯}
Notes:
(1) Any write or transfer to the Non-volatile Data Registers is followed by a high voltage cycle after a STOP has been issued.
© 2009 SCILLC. All rights reserved.
11
Characteristics subject to change without notice
Doc. No. MD-2017 Rev. H