X9259

Characteristics subject to change without notice.

13 of 25

REV 1.2.3 4/30/02

www.xicor.com

Global XFR Wiper Counter Register (WCR) to Data Register (DR)

Transfer Wiper Counter Register (WCR) to Data Register (DR)

Transfer Data Register (DR) to Wiper Counter Register (WCR)

Increment/Decrement Wiper Counter Register (WCR)

Notes: (1) “MACK”/”SACK”: stands for the acknowledge sent by the master/slave.

(2) “A3 ~ A0”: stands for the device addresses sent by the master.

(3) “X”: indicates that it is a “0” for testing purpose but physically it is a “don’t care” condition.

(4) “I”: stands for the increment operation, SDA held high during active SCL phase (high).

(5) “D”: stands for the decrement operation, SDA held low during active SCL phase (high).

S

T

A

R

T

Device Type

Identifier

Device

Addresses

S

A

C

K

Instruction

Opcode

DR/WCR

Addresses

S

A

C

K

S

T

O

P

HIGH-VOLTAGE

WRITE CYCLE

0101 A3 A2 A1 A0

1000 RB RA 0

0

S

T

A

R

T

Device Type

Identifier

Device

Addresses

S

A

C

K

Instruction

Opcode

DR/WCR

Addresses

S

A

C

K

S

T

O

P

HIGH-VOLTAGE

WRITE CYCLE

0101 A3 A2 A1 A0

1110 RB RA P1 P0

S

T

A

R

T

Device Type

Identifier

Device

Addresses

S

A

C

K

Instruction

Opcode

DR/WCR

Addresses

S

A

C

K

S

T

O

P

0

1

0

1

A3 A2 A1 A0

1 1 0 1 RB RA P1 P0

S

T

A

R

T

Device Type

Identifier

Device

Addresses

S

A

C

K

Instruction

Opcode

DR/WCR

Addresses

S

A

C

K

Increment/Decrement

(Sent by Master on SDA)

S

T

O

P

0101 A3 A2 A1 A0

001000

P1

P0

I/D I/D

....

I/D I/D