EVAL-AD5272SDZ Analog Devices Inc, EVAL-AD5272SDZ Datasheet - Page 22

• Manufacturer Part Number: EVAL-AD5272SDZ
• Description: EVALUATION BOARD
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD5272SDZ

• Main Purpose: Digital Potentiometer
• Embedded: No
• Utilized Ic / Part: AD5272
• Primary Attributes: 1 Channel, 1024 Position
• Secondary Attributes: 2.7 ~ 5.5 V, 5 ppm/°C, I²C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 13. Write and Read to RDAC and 50-TP memory
DIN
0x1C03
0x0500
0x0800
0x0C00
0x1800
0x0000
0x1419
0x2000
0x0000
1
Table 14. Control Register Bit Map
DB9
0
Table 15. Control Register Description
Bit Name
C0
C1
C2
C3
1
Table 16. Memory Map
Command Number
5
1
X is don’t care.
Wiper position is frozen to the last value programmed in the 50-TP memory. Wiper freezes to midscale if 50-TP memory has not been previously programmed.
X is don’t care.
0x1C03
0xXXXX
SDO
0xXXXX
0x0500
0x100
0x0C00
0xXX19
0x0000
0x0100
DB8
0
1
Action
Enable update of wiper position and 50-TP memory contents through digital interface.
Write 0x100 to the RDAC register, wiper moves to ¼ full-scale position.
Prepare data read from RDAC register.
Stores RDAC register content into 50-TP memory. 16-bit word appears out of SDO, where last 10-bits contain the
contents of the RDAC Register 0x100.
Prepare data read of last programmed 50-TP memory monitor location.
NOP Instruction 0 sends a 16-bit word out of SDO, where the six LSBs last 6-bits contain the binary address of the last
programmed 50-TP memory location, for example, 0x19 (see Table 16).
Prepares data read from Memory Location 0x19.
Prepare data read from the control register. Sends a 16-bit word out of SDO, where the last 10-bits contain the contents
of Memory Location 0x19.
NOP Instruction 0 sends a 16-bit word out of SDO, where the last four bits contain the contents of the control register.
If Bit C3 = 1, fuse program command successful.
Description
50-TP program enable
1 = enable device for 50-TP program
RDAC register write protect
0 = wiper position frozen to value in 50-TP memory (default)
1 = allow update of wiper position through a digital interface
Resistor performance enable
1 = RDAC resistor tolerance calibration disabled
50-TP memory program success bit
1 = fuse program command successful
0 = 50-TP program disabled (default)
0 = RDAC resistor tolerance calibration enabled (default)
0 = fuse program command unsuccessful (default)
D9
X
X
X
X
X
…
X
X
X
X
X
DB7
0
D8
X
X
X
X
X
…
X
X
X
X
X
D7
X
X
X
X
X
…
X
X
X
X
X
DB6
0
D6
0
0
0
0
0
…
0
0
0
0
0
Data Byte [DB9:DB8]
D5
0
0
0
0
0
…
0
0
0
1
1
DB5
0
D4
0
0
0
0
0
…
0
1
1
0
1
Rev. C | Page 22 of 28
D3
0
0
0
0
0
…
1
0
1
1
0
1
DB4
0
D2
0
0
0
0
1
…
0
1
1
0
0
D1
0
0
1
1
0
…
1
0
1
0
1
1
DB3
C3
0
1
0
1
0
0
0
0
0
0
D0
…
Register Contents
Reserved
1st programmed wiper location (0x01)
2nd programmed wiper location (0x02)
3rd programmed wiper location (0x03)
4th programmed wiper location (0x04)
…
10th programmed wiper location (0xA)
20th programmed wiper location (0x14)
30th programmed wiper location (0x1E)
40th programmed wiper location (0x28)
50th programmed wiper location (0x32)
DB2
C2
AD5272/AD5274
DB1
C1
DB0
C0