M35071 Datasheet, PDF (26/40 Pages) Mitsubishi Electric Semiconductor – SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS

MITSUBISHI MICROCOMPUTERS
M35071-XXXSP/FP
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
DATA INPUT
(1) I²C-Bus communication function
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 input 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. 12 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. 13 Control byte configuration
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