M35074 Datasheet, PDF (27/44 Pages) Renesas Technology Corp – SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS

MITSUBISHI MICROCOMPUTERS
M35074-XXXSP
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
DATA INPUT 2
(1) I²C-Bus communication function (At only VDD = 5V)
This IC has a built-in data transmission interface which utilizes
2 unidirectional buses. In communications, this IC functions as
a slave reception device.
The IC is synchronized with the serial clock (SCL) sent from
the master device and receives the data (SDA).
Communications are controlled from the start/stop states.
Also, always in put the control byte after attaining the start
state.
The below chart shows the start/stop state and control byte
configuration.
SCL
SDA
Start state
Fig.13 Start state / Stop state
Data receive Data modify
enable
Stop state
Control byte: 7C16(Fixed)
Slave address
R/W
0
1
1
1
1
1
0
0
(0: Written)
Fig.14 Control byte configuration
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