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參數(shù)資料
| 型號(hào)： | AD5259EVAL2 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Nonvolatile, I2C-Compatible 256-Position, Digital Potentiometer |
| 中文描述： | 非易失，I2C兼容256級(jí)，數(shù)字電位器 |
| 文件頁數(shù)： | 17/24頁 |
| 文件大?。?/td> | 1039K |
| 代理商： | AD5259EVAL2 |
AD5259
READ MODES
Read modes 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. Theoretically, this step can be avoided if the user reads a register
previously written to. For example, if the EEPROM was just written to, the user can then skip the two dummy bytes and proceed directly
to the slave address byte, followed by the EEPROM readback data.
Table 11. Traditional Readback of RDAC Register Value
7-Bit Device Address
(See Table 5)
0 SA 0 0 0 0 0 0 0 0 SA S
(See Table 5)
Slave Address Byte
Instruction Byte
Slave Address Byte
↑
Repeat start
Rev. A | Page 17 of 24
S
7-Bit Device Address
1 SA D7 D6 D5 D4 D3 D2 D1 D0 NA P
Read Back Data
Table 12. Traditional Readback of Stored EEPROM Value
7-Bit Device Address
(See Table 5)
Slave Address Byte
S
0 SA 0 0 1 0 0 0 0 0 SA
Instruction Byte
S
Slave Address Byte
↑
Repeat start
7-Bit Device Address
(See Table 5)
1 SA
D7 D6 D5 D4 D3 D2 D1 D0 NA P
Read Back Data
STORE/RESTORE MODES
Table 13. Storing RDAC Value to EEPROM
7-Bit Device Address
(See Table 5)
Slave Address Byte
S
0
SA
1
Instruction Byte
1
0
0
0
0
0
0
SA
P
Table 14. Restoring EEPROM to RDAC
7-Bit Device Address
(See Table 5)
Slave Address Byte
S
0
SA
1
Instruction Byte
0
1
0
0
0
0
0
SA
P
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