m35047 Renesas Electronics Corporation., m35047 Datasheet - Page 31

• Manufacturer Part Number: m35047
• Description: Screen Character And Pattern Display Controllers
• Manufacturer: Renesas Electronics Corporation.

DATA INPUT
(1) I
Fig.22 Start state / Stop state
Fig.23 Control byte configuration
30
2
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.
C-Bus communication function
SDA
SCL
Start state
Control byte: 7C
16
(Fixed)
0
Data receive
1
1
Slave address
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
Data modify
1
enable
1
1
0
R/W
0
(0: Written)
MITSUBISHI MICROCOMPUTERS
M35047-XXXSP/FP
Stop state