5

MITSUBISHI <DIGITAL ASSP>

M35500AFP/BGP

FLD(VFD) CONTROLLER

Byte protocol

Command protocol

Display data setting

(Command 0)

CLK

Command 0

Data 1

Data 2

X

A-D

data 0

A-D

data j

CS

CLK

X

b0

b1

b2

b3

b4

b5

b6

b7

b0

b1

b2

b3

b4

b5

b6

b7

Other setting except

display data setting

(Command 1 to 3)

CLK

Command

X

Note 1: The serial data which is transmitted after executing command 0

is recognized as a display data.

“A-D data 6 or more” data is defined as an undefined “X”.

Note 2: Set the CS signal to “H” level after transferring a display data.

X

Data i

CS

CS

SERIAL I/O PROTOCOL

Fig. 5. Serial I/O protocol