AD5263 AD [Analog Devices], AD5263 Datasheet - Page 5

• Manufacturer Part Number: AD5263
• Description: Preliminary Technical Data
• Manufacturer: AD [Analog Devices]

Quad +15V Digital Potentiometers
SPI Compatible Digital Interface (DIS=’0’)
TABLE IA: SPI 10-Bit Serial-Data Word
Format
ADDR
B9
A1
2
I
TABLE IIA: I
S
TABLE IIB: I
S
S = Start Condition
P = Stop Condition
A = Acknowledge
AD1, AD0 = Package pin programmable address bits, Must match
with the logic states at pins AD1, AD0
A1, A0 = RDAC sub address select
RS = Software Reset wiper (A1, A0) to mid scale position
Figure 2. I
08 AUG ’02, REV PrD
V O U T
9
S D I
C L K
2
CS
SDA
SCL
C Compatible Digital Interface (DIS=’1’)
0
0
1
0
1
0
1
0
1
0
B8
A0
1
1
Slave Address Byte
Slave Address Byte
2
C Compatible Detail Timing Diagram
MSB
0
0
B7
D7
Figure 1A. SPI Timing Diagram
2
A 1 A 0 D 7 D 6
P
7
DATA
1
1
2
2
t
C Read Mode Data Word Format:
C Write Mode Data Word Format
1
B6
D6
1
1
S
B5
D5
t
2
A
D
1
0
PRELIMINARY TECHNICAL DATA
RDAC REGISTER LOAD
D 5
B4
D4
A
D
0
A
D
0
t
3
D 4
W W W W
R
D3
B3
t
D 3
8
t
8
A
A
B2
D2
D 2
X
D
7
D 1 D0
D1
B1
A
1
D
8
t
B0
D0
LSB
2
A
0
D
5
t
Instruction Byte
9
4
0
Data Byte
R
S
D
4
- 5 -
S
D
D
3
SD = Shutdown active high, ties wiper (A1, A0) to terminal A,
opens terminal B, RDAC register contents are not disturbed. To exit
shutdown a command SD = ‘0’ must be executed for each RDAC
(A1, A0).
W W W W
R = Read = ‘1’
D7,D6,D5,D4,D3,D2,D1,D0 = Data Bits
X = Don’t Care
t
5
= Write = ‘0’
O
1
D
2
(Data Out)
(Data In)
SDO
V
CLK
SDI
CS
OUT
O
2
D
1
Sr
V
DD
0V
1
0
1
0
1
0
1
0
t
X
D
0
7
t
CSH0
Figure 1B. Detail SPI Timing Diagram
t
6
Ax or Dx
A
A
A'x or D'x
t
CSS
D
7
P
t
CH
D
6
A'x or D'x
t
Ax or Dx
DS
t
D
5
CL
Data Byte
t
DH
D
4
P
D
3
t
10
±1 LSB ERROR BAND
t
PD_MAX
D
2
t
CSH1
t
CS1
AD5263
t
S
D
1
t
CSW
D
0
±1 LSB
A
P