AD5248BRMZ10(RevC) 查看數據表（PDF） - Analog Devices

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AD5248BRMZ10
(Rev.:RevC)

Dual, 256-Position, I2C-Compatible Digital Potentiometers

Analog Devices 

Data Sheet

AD5243/AD5248

Write Mode

Table 9. AD5243 Write Mode

S 0 1 0 1 1 1 1 W A A0 SD X X X X X X A D7 D6 D5 D4 D3 D2 D1 D0 A P

Slave address byte

Instruction byte

Data byte

Table 10. AD5248 Write Mode

S 0 1 0 1 1 AD1 AD0 W A A0 SD X X X X X X A D7 D6 D5 D4 D3 D2 D1 D0 A P

Slave address byte

Instruction byte

Data byte

Read Mode

Table 11. AD5243 Read Mode

S 0 1 0 1 1 1 1 R A D7

D6

D5

D4

D3

D2

D1

D0

AP

Slave address byte

Data byte

Table 12. AD5248 Read Mode

S 0 1 0 1 1 AD1

AD0

Slave address byte

R A D7 D6 D5 D4 D3 D2 D1 D0 A P

Data byte

Table 13. SDA Bits Descriptions

Bit

S

P

A

AD0, AD1

X

W

R

A0

SD

D7, D6, D5, D4, D3, D2, D1, D0

Description

Start condition.

Stop condition.

Acknowledge.

Package pin-programmable address bits.

Don’t care.

Write.

Read.

RDAC subaddress select bit.

Shutdown connects wiper to B terminal and open circuits the A terminal. It does not change the

contents of the wiper register.

Data bits.

Rev. C | Page 17 of 20

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