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参数资料
| 型号： | AD5259EVAL |
| 厂商： | Analog Devices, Inc. |
| 元件分类： | 数字电位计 |
| 英文描述： | Nonvolatile, I2C-Compatible 256-Position, Digital Potentiometer |
| 中文描述： | 非易失，I2C兼容256级，数字电位器 |
| 文件页数： | 7/14页 |
| 文件大小： | 246K |
| 代理商： | AD5259EVAL |
AD5259
Preliminary Technical Data
Read Modes
Table 11. Traditional Read back of RDAC Register value
Device Address*
(7-bit)
0 SA 0
Slave Address Byte
Rev. PrJ 7/22/04 | Page 7 of 14
S
0
0
0
0
0
0
0 SA
S
Device Address*
(7-bit)
Slave Address Byte
1 SA D7 D6 D5 D4 D3 D2 D1 D0 NA P
Read Back Data
Instruction Byte
↑
Repeat start
Table 12. Traditional Read back of stored EEPROM value
Device Address*
(7-bit)
0 SA 0
Slave Address Byte
S
0
1
0
0
0
0
0 SA
S
Device Address*
(7-bit)
Slave Address Byte
1 SA D7 D6 D5 D4 D3 D2 D1 D0 NA P
Read Back Data
Instruction Byte
↑
Repeat start
Table 13. Traditional Read back of Tolerance
i. Consecutively
Device
Address*
(7-bit)
0 SA 0 0 1 1 1 1 1 0 SA S
Slave Address
Byte
S
Device
Address*
(7-bit)
Slave Address
Byte
1 SA D7 D6 D5 D4 D3 D2 D1
Sign + Integer Byte
D
0 MA D7 D6 D5 D4 D3 D2 D1 D0 NA P
Decimal Byte
Instruction Byte
↑
Repeat start
ii. Individually
Device
Address*
(7-bit)
Slave Address
Byte
S
0 SA 0 0 1 1 1 1 1 0 SA S
Device
Address*
(7-bit)
Slave Address
Byte
1 SA D7 D6 D5 D4 D3 D2 D1
Sign + Integer Byte
D
0
NA
P
Instruction Byte
↑
Repeat start
S
Device
Address*
(7-bit)
Slave Address
Byte
0 SA 0 0 1 1 1 1 1 1 SA S
Device
Address*
(7-bit)
Slave Address
Byte
1 SA D7 D6 D5 D4 D3 D2 D1
Decimal Byte
D
0
NA
P
Instruction Byte
↑
Repeat start
Note: Read modes above are referred to as traditional because the first two bytes for all three cases are “dummy” bytes which function to
place the pointer towards the correct register. This is the reason for the Repeat Start. In theory, this step can be avoided if the user is
interested in reading a register that was previously written to. For example, if the EEPROM was just written to, then the user can skip the
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