MB85RC256V

10

DS501-00017-3v0-E

• Sequential Read

Data can be received continuously following the Device address word (R/W “1” input) after specifying the

address in the same way as for Random Read. If the read reaches the end of address, the internal read

•Device ID

The Device ID command reads fixed Device ID. The size of Device ID is 3 bytes and consists of manufacturer

ID and product ID. The Device ID is read-only and can be read out by following sequences.

b) The master sends the device address word after the ACK response from the slave.

In this device address word, R/W code are “Don't care” value.

from the slave.

d) The master read out the Device ID succeedingly in order of Data Byte 1st / 2nd / 3rd after the ACK

response from the slave.

e) The master respnds the NACK (SDA is the “H” level) after reading 3 bytes of the Device ID.

In case the master respond the ACK after reading 3 bytes of the Device ID, the master re-reading the

Device ID from the 1st byte.

Stop Condition

ACK (SDA is the "L" level)

A

P

NACK (SDA is the "H" level)

N

AA

A

N P

Read

Data 8bits

Read

Data 8bits

Read

Data

...

...

Access from master

Access from slave

11 10

9

8

76543210

11 10

9

8

76543210

000000001010010100010000

Fujitsu Semiconductor

Proprietary use

Data Byte 1st

Data Byte 2nd

Data Byte 3rd

Reserved

Slave ID

Reserved

Slave ID

R

/

W

AS

S

A Data Byte

1st

Data Byte

2nd

Data Byte

3rd

AA

N P

S

P

A

N

Access from master

Access from slave

Stop Condition

ACK (SDA is the "L" level)

NACK (SDA is the "H" level)

Start Condition