BU9877FV データシートの表示（PDF） - ROHM Semiconductor

部品番号

コンポーネント説明

メーカー

BU9877FV

Serial interface IC for DIMMs supporting plug & play

ROHM Semiconductor 

Memory ICs

BU9877FV

Start condition

SCL

Start condition

Stop condition

SDA

1 0 1 0 A2 A1 A0 0

WA7 WA0

1 0 1 0 A2 A1 A0 1

D7

D0 1

Slave address

Word address

Slave address

ACK signal (output)

Fig. 9 Random read cycle

Read data

ACK signal (input)

• This command enables reading of the data at the specified word address.

• If the ACK signal LOW following D0 is detected and no stop condition is sent from the master side, reading can be

continued sequentially to the data of the next word address.

• To terminate this command, HIGH is input at the ACK signal timing (following any D0), then stop condition is input.

Start condition

SCL

SDA

1 0 1 0 A2 A1 A0 1

D7

D0

Slave address

Read data

ACK signal (output)

Stop condition

D7

D0

Read data

n+a

ACK signal (input)

Fig. 10 Sequential read cycle

• If the ACK signal is detected following D0 and no stop condition is sent from the master side, reading can be con-

tinued sequentially to the data of the next word address.

• To terminate this command, HIGH is input at the ACK signal timing (following any D0), then stop condition is input.

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