MCP47FVB01 datasheet(54/92 Pages) MICROCHIP

54 / 92 page

MCP47FVBXX

DS20005405A-page 54

 2015 Microchip Technology Inc.

FIGURE 7-3:

Continuous Write Commands.

Control Byte

Write Command

AD AD AD AD

A0 0

x A

I2C™ Slave Address

Memory Address Command

Reserved

Write Data

DD DD

DD D A

Write “Data” bits

D DDD

D D D

Write Data

DD DD

DD D

Write “Data” bits

D DDD

D D D

Write Command

AD AD AD AD

x A

Device

Memory

Address Command

Reserved

Write Data

DD DD

DD D AP

Write “Data” bits

D DDD

D D D

Write Command

AD AD AD AD

x A

Device

Memory

Address Command

Reserved

Write bit

Start bit

ACK bit (1)

ACK bit (1, 2)

ACK bit (1)

ACK bit (1, 2)

Stop bit (3)

ACK bit (1)

ACK bit (1, 2)

ACK bit (1)

Note 1:

The Acknowledge bit is generated by the MCP47FVBXX.

At the falling edge of the SCL pin for the Write command ACK bit, the MCP47FVBXX device updates

the value of the specified device register.

This command sequence does not need to terminate (using the Stop bit), and the Write command can

be repeated (see continuous write format, Section 7.1.2 “Continuous Writes to Volatile Memory”).

Only functions when writing to volatile registers (AD4:AD0 = 00h through 0Ah).

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