13

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A Product Line of

Diodes Incorporated

PI6CBE33045

www.diodes.com

June 2022

Diodes Incorporated

PI6CBE33045

Document Number DS43623 Rev 2-2

PI6CBE33045 is a slave-only device that supports block read and block write protocol using a single 7-bit address and read/write bit as

shown below.

Read and write block transfers can be stopped after any complete byte transfer.

Address Assignment

A6

A5

A4

A3

A2

A1

A0

R/W

1

1

0

1

See SMBus Address Selection table

1/0

Note: SMBus address is latched on SADR pin

How to Write

1 bit

7 bits

1 bit 1 bit 8 bits

1 bit 8 bits

1 bit

8 bits

1 bit

8 bits

1 bit

1 bit

Start bit

Add.

W(0)

Ack

Beginning

Byte loca-

tion = N

Ack

Data Byte

count = X

Ack

Beginning

Data Byte

(N)

Ack

.......

Data Byte

(N+X-1)

Ack

Stop bit

How to Read

1 bit

7 bits

1 bit 1 bit 8 bits

1 bit 1 bit

7 bits

1 bit 1 bit 8 bits

1 bit

8 bits

1 bit

Start bit

Address

W(0)

Ack

Beginning

Byte loca-

tion = N

Ack

Repeat

Start bit

Address

R(1)

Ack

Data Byte

count = X

Ack

Beginning

Data Byte

(N)

Ack

8 bits

1 bit

1 bit

.......

Data Byte

(N+X-1)

NAck

Stop bit

SMBus Address

Pin

SMBus Address

SADR1_tri

SADR0_tri

PI6CBE3312x

PI6CBE3308x

PI6CBE3306x

PI6CBE33045

0

0

D8

D8

D8

D8

0

M

DA

N/A

N/A

DA

0

1

DE

N/A

N/A

DE

M

0

C2

N/A

N/A

N/A

M

M

C4

N/A

N/A

N/A

M

1

C6

N/A

N/A

N/A

1

0

CA

N/A

N/A

N/A

1

M

CC

N/A

N/A

N/A

1

1

CE

N/A

N/A

N/A

Note: PI6CBE3308x and PI6CBE3306x do not have SMBus address select pins. Their address is D8.

SMBus Serial Data Interface