m3819 Renesas Electronics Corporation., m3819 Datasheet - Page 105

• Manufacturer Part Number: m3819
• Description: Mitsubishi 8-bit Single-chip Microcomputer 740 Family / 38000 Series
• Manufacturer: Renesas Electronics Corporation.

2. APPLICATION
Fig. 2.3.10 Serial I/O connection examples (1)
2.3.2 Serial I/O connection examples
(1) Control of peripheral IC equipped with CS pin
In any application, the automatic transfer function is available.
Figure 2.3.10 shows connection examples of a peripheral IC equipped with the CS pin.
Note :
(1) Only transmission
(3) Transmission and reception
3819 group
3819 group
(using the S
(Pins S
(Pins IN and OUT in peripheral IC
are connected)
S
S
The OUT pin of the peripheral IC is an
N-channel open-drain output. It is in
high impedance during receiving data.
“Port” is an output port controlled by
software.
S
S
Port
Port
OUT
OUT
CLK
CLK
S
IN
IN
(OSD controller etc.)
and S
(E PROM etc.)
IN
Peripheral IC
Peripheral IC
2
pin as an I/O port)
CS
CLK
DATA
OUT
CS
CLK
IN
OUT
are connected)
3819 Group USER’S MANUAL
(2) Transmission and reception
(4) Connecting ICs
3819 group
3819 group
S
S
S
S
Port
Port
Port
OUT
OUT
CLK
S
CLK
S
IN
IN
(E PROM etc.)
Peripheral IC
Peripheral IC 1
Peripheral IC 2
2
MITSUBISHI MICROCOMPUTER
CS
CLK
IN
OUT
CS
CLK
IN
OUT
CS
CLK
IN
OUT
2.3 Serial I/O
3819 Group
91