參數(shù)資料
型號: AD5254BRU10-RL7
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字電位計(jì)
英文描述: Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers
中文描述: QUAD 10K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO20
封裝: MO-153AC, TSSOP-20
文件頁數(shù): 15/28頁
文件大小: 834K
代理商: AD5254BRU10-RL7
AD5253/AD5254
I
2
C INTERFACE DETAIL DESCRIPTION
From Master to Slave
Rev. 0 | Page 15 of 28
From Slave to Master
S = Start Condition.
P = Stop Condition.
A = Acknowledge (SDA Low).
A = Not Acknowledge (SDA High).
AD1, AD0 = I
2
C Device Address Bits. Must match with the logic states at Pins AD1, AD0.
R/W= Read Enable Bit, Logic High/Write Enable Bit, Logic Low.
CMD/REG = Command Enable Bit, Logic High/Register Access Bit, Logic Low.
EE/RDAC = EEMEM Register, Logic High/RDAC Register, Logic Low.
A4, A3, A2, A1, A0
= RDAC/EEMEM Register Addresses.
0 WRITE
0
S
0
1
0
1
1
A
D
1
A
D
0
0
A
A
4
A
3
A
2
A
1
A
0
A
P
DATA
0
(1 BYTE +
ACKNOWLEDGE)
SLAVE ADDRESS
INSTRUCTIONS
AND ADDRESS
CMD/
REG
EE/
RDAC
0 REG
A/
A
Figure 27. Single Write Mode
0 WRITE
0
S
0
1
0
1
1
A
D
1
A
D
0
0
A
A
4
A
3
A
2
A
1
A
0
P
A
A
RDAC_N
DATA
RDAC_N + 1
DATA
0
(N BYTE +
ACKNOWLEDGE)
SLAVE ADDRESS
INSTRUCTIONS
AND ADDRESS
CMD/
REG
EE/
RDAC
0 REG
A/
A
Figure 28. Consecutive Write Mode
Table 6. Addresses for Writing Data Byte Contents to RDAC Registers (R/W = 0, CMD/REG = 0, EE/RDAC = 0)
A4
A3
A2
A1
A0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
0
1
1
0
0
1
0
0
:
:
:
:
:
0
1
1
1
1
RDAC
RDAC0
RDAC1
RDAC2
RDAC3
Reserved
Reserved
Data Byte Description
6-/8-bit wiper setting (2 MSBs of AD5253 are X)
6-/8-bit wiper setting (2 MSBs of AD5253 are X)
6-/8-bit wiper setting (2 MSBs of AD5253 are X)
6-/8-bit wiper setting (2 MSBs of AD5253 are X)
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