MCP4131 MICROCHIP [Microchip Technology], MCP4131 Datasheet - Page 48

• Manufacturer Part Number: MCP4131
• Description: 7/8-Bit Single/Dual SPI Digital POT with Volatile Memory
• Manufacturer: MICROCHIP [Microchip Technology]

MCP413X/415X/423X/425X
TABLE 7-2:
DS22060B-page 48
06h-0Fh
Value
Note 1: The Data Memory is only 9-bits wide, so the MSb is ignored by the device.
00h
01h
02h
03h
04h
05h
2: All these Address/Command combinations are valid, so the CMDERR bit is set. Any other Address/Command
Address
Volatile Wiper 0
Volatile Wiper 1
Reserved
Reserved
Volatile
TCON Register
Status Register
Reserved
combination is a command error state and the CMDERR bit will be clear.
Function
MEMORY MAP AND THE SUPPORTED COMMANDS
Write Data
Read Data
Increment Wiper
Decrement Wiper
Write Data
Read Data
Increment Wiper
Decrement Wiper
—
—
Write Data
Read Data
Read Data
—
Command
nn nnnn nnnn
nn nnnn nnnn
nn nnnn nnnn
nn nnnn nnnn
nn nnnn nnnn
nn nnnn nnnn
nn nnnn nnnn
(10-bits)
Data
—
—
—
—
—
—
—
(1)
0000 00nn nnnn nnnn
0000 11nn nnnn nnnn
0001 00nn nnnn nnnn
0001 11nn nnnn nnnn
0100 00nn nnnn nnnn
0100 11nn nnnn nnnn
0101 11nn nnnn nnnn
MOSI (SDI pin)
0000 0100
0000 1000
0001 0100
0001 1000
—
—
—
SPI String (Binary)
© 2008 Microchip Technology Inc.
1111 111n nnnn nnnn
1111 111n nnnn nnnn
1111 111n nnnn nnnn
1111 111n nnnn nnnn
1111 1111 1111 1111
1111 1111 1111 1111
1111 1111 1111 1111
MISO (SDO pin)
1111 1111
1111 1111
1111 1111
1111 1111
—
—
—
(2)