ML9480 datasheet(21/37 Pages) LAPIS

21 / 37 page

FEDL9480-01

ML9480

21/37

• Data configuration (I

2C interface, When MODE pin is "H")

R/W

1100 SA0 0

A MSB

LSB

Salve address: 0 1 1 1 0 0

C：Consecutive control byte setting bit

0：Last control byte, 1：Consecutive control byte

Slave address

COMMAND

DISPLAY DATA

For the I

2C interface, each IC is assigned with a 7-bit slave address. The first one byte in the transfer consists of

this 7-bit slave address and the R/W bit that indicates the data transfer direction. Always input "0" to the eighth

R/W bit because the ML9480 is a write-only LSI.

The eight bits next to the slave address is a control byte. The first one bit is CO: consecutive command setting

bit.

When CO = "0": Means the last control byte.

When CO = "1": Means the control bytes are successively input.

Data write method

• Serial interface

The data is written to the address set by the data write setting command (F3).

For the Serial interface, the data is written in units of 40 bits.

Written from D40 to SEG1, D39 to SEG2, ... , D2 to SEG39, and D1 to SEG40.

MSB

Segment Output

LSB

COM1

D40 D39 D38 D37

COM2

D40 D39 D38 D37

COM3

D40 D39 D38 D37

COM4

D40 D39 D38 D37

• I

2C interface (When MODE pin is "L")

The data is written to the address set by the slave address.

For the I

2C interface (When MODE pin is "L"), the data is written to the specified address starting with the

LSB side in units of 8 bits.

(The data is written in the order from SEG33-40, SEG25-SEG32, SEG17-SEG24, SEG9-SEG16, and

SEG1-SEG8.)

LSB

Segment Output

MSB

1234

COM1

COM2

COM3

COM4

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