Data Sheet

AD5243/AD5248

Rev. C | Page 17 of 20

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

A

P

Slave address byte

Data byte

Table 12. AD5248 Read Mode

S

0

1

0

1

1

AD1

AD0

R

A

D7

D6

D5

D4

D3

D2

D1

D0

A

P

Slave address byte

Data byte

Table 13. SDA Bits Descriptions

Bit

Description

S

Start condition.

P

Stop condition.

A

Acknowledge.

AD0, AD1

Package pin-programmable address bits.

X

Don’t care.

W

Write.

R

Read.

A0

RDAC subaddress select bit.

SD

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

contents of the wiper register.

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

Data bits.