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X9401WS24IZ-2.7

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
7
FN8190.5
September 14, 2015
TABLE 1. INSTRUCTION SET
INSTRUCTION
INSTRUCTION SET
OPERATIONI
3
I
2
I
1
I
0
R
1
R
0
P
1
P
0
Read Wiper Counter Register 1 0 0 1 0 0 P
1
P
0
Read the contents of the Wiper Counter Register pointed to by
P
1
- P
0
Write Wiper Counter Register 1 0 1 0 0 0 P
1
P
0
Write new value to the Wiper Counter Register
pointed to by P
1
- P
0
Read Data Register 1 0 1 1 R
1
R
0
P
1
P
0
Read the contents of the Data Register pointed to by P
1
- P
0
and
R
1
- R
0
Write Data Register 1 1 0 0 R
1
R
0
P
1
P
0
Write new value to the Data Register pointed to by
P
1
- P
0
and R
1
- R
0
XFR Data Register to Wiper
Counter Register
1101R
1
R
0
P
1
P
0
Transfer the contents of the Data Register pointed to by R
1
- R
0
to the Wiper Counter Register pointed to by P
1
- P
0
0 1 0 1 A1 A0 I3 I2 I1 I0 R1 R0 P1 P0
SCL
SI
CS
00
S0
0 0 D5 D4 D3 D2 D1 D0
DON’T CARE
FIGURE 5. THREE-BYTE COMMAND SEQUENCE (READ)
0101 00A1A0 I3 I2 I1 I0 0
P1
P0
SCK
SI
I
N
C
1
I
N
C
2
I
N
C
N
D
E
C
1
D
E
C
N
0
CS
FIGURE 6. INCREMENT/DECREMENT COMMAND SEQUENCE
SCK
SI
V
W
/R
W
INC/DEC CMD ISSUED
T
WRID
VOLTAGE OUT
FIGURE 7. INCREMENT/DECREMENT TIMING LIMITS
X9401
8
FN8190.5
September 14, 2015
XFR Wiper Counter Register to
Data Register
1110R
1
R
0
P
1
P
0
Transfer the contents of the Wiper Counter Register pointed to by
P
1
- P
0
to the Register pointed to by
R
1
- R
0
Global XFR Data Register to Wiper
Counter Register
0001R
1
R
0
0 0 Transfer the contents of the Data Registers pointed to by R
1
- R
0
of all four pots to their respective Wiper Counter Register
Global XFR Wiper Counter Register
to Data Register
1000R
1
R
0
0 0 Transfer the contents of all Wiper Counter Registers to their
respective data Registers pointed to by
R
1
- R
0
of all four pots
Increment/Decrement Wiper
Counter Register
00100 0P
1
P
0
Enable Increment/decrement of the Wiper Counter Register
pointed to by P
1
- P
0
Read Status (WIP bit) 0 1 0 1 0 0 0 1 Read the status of the internal write cycle, by
checking the WIP bit.
TABLE 1. INSTRUCTION SET
INSTRUCTION
INSTRUCTION SET
OPERATIONI
3
I
2
I
1
I
0
R
1
R
0
P
1
P
0
X9401
9
FN8190.5
September 14, 2015
Instruction Format
NOTES:
3. A1 ~ A0”: stands for the device addresses sent by the master.
4. WPx refers to wiper position data in the Counter Register
5. “I”: stands for the increment operation, SI held HIGH during active SCK phase (high).
6. “D”: stands for the decrement operation, SI held LOW during active SCK phase (high).
Read Wiper Counter Register (WCR)
Write Wiper Counter Register (WCR)
Read Data Register (DR)
Write Data Register (DR)
Transfer Data Register (DR) to Wiper Counter Register (WCR)
Transfer Wiper Counter Register (WCR) to Data Register (DR)
Increment/Decrement Wiper Counter Register (WCR)
Global Transfer Data Register (DR) to Wiper Counter Register (WCR)
CS
FALLING
EDGE
DEVICE
TYPE
IDENTIFIER
DEVICE
ADDRESSES
INSTRUCTION
OPCODE
WCR
ADDRESSES
WIPER POSITION
(SENT BY X9401 ON SO)
CS
RISING
EDGE010100A1 A0 1 0 0 1 00 P1 P000WP5WP4WP3WP2WP1WP0
CS
FALLING
EDGE
DEVICE
TYPE
IDENTIFIER
DEVICE
ADDRESSES
INSTRUCTION
OPCODE
WCR
ADDRESSES
DATA BYTE
(SENT BY HOST ON SI)
CS
RISING
EDGE0 1 0 1 0 0 A1 A0 1 0 1 0 0 0 P1 P0 0 0 WP5 WP4 WP3 WP2 WP1 WP0
CS
FALLING
EDGE
DEVICE
TYPE
IDENTIFIER
DEVICE
ADDRESSES
INSTRUCTION
OPCODE
DR AND WCR
ADDRESSES
DATA BYTE
(SENT BY X9401 ON SO)
CS
RISING
EDGE010100A1 A01011R1R0P1P000WP5WP4WP3WP2WP1WP0
CS
FALLING
EDGE
DEVICE TYPE
IDENTIFIER
DEVICE
ADDRESSES
INSTRUCTION
OPCODE
DR AND WCR
ADDRESSES
DATA BYTE
(SENT BY HOST ON SI) CS
RISING
EDGE
HIGH-
VOLTAGE
WRITE
CYCLE
0 1 0 1 00A1A0 1 1 0 0 R1R0P1P000WP5WP4WP3WP2WP1WP0
CS
FALLING
EDGE
DEVICE
TYPE
IDENTIFIER
DEVICE
ADDRESSES
INSTRUCTION
OPCODE
DR AND WCR
ADDRESSES
CS
RISING
EDGE010100A1A0 1 1 0 1R1R0P1P0
CS
FALLING
EDGE
DEVICE
TYPE
IDENTIFIER
DEVICE
ADDRESSES
INSTRUCTION
OPCODE
DR AND WCR
ADDRESSES
CS
RISING
EDGE
HIGH-VOLTAGE
WRITE CYCLE010100 A1 A0 1110R1R0P1P0
CS
FALLING
EDGE
DEVICE TYPE
IDENTIFIER
DEVICE
ADDRESSES
INSTRUCTION
OPCODE
WCR
ADDRESSES
INCREMENT/DECREMENT
(SENT BY MASTER ON SDA)
CS
RISING
EDGE0 1 0 1 0 0 A1 A0 0 0 1 0 X X P1 P0 I/D I/D . . . . I/D I/D
CS
FALLING
EDGE
DEVICE TYPE
IDENTIFIER
DEVICE
ADDRESSES
INSTRUCTION
OPCODE
DR
ADDRESSES
CS
RISING
EDGE010100A1A00001R1R000
X9401
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

X9401WS24IZ-2.7

Mfr. #:
Buy X9401WS24IZ-2.7
Manufacturer:
Renesas / Intersil
Description:
Digital Potentiometer ICs X9401WS24IZ QD DCP 10KOHM 64 TAPS SPI
Lifecycle:
New from this manufacturer.
Delivery:
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