Mpu Interface (Reference Example) - Epson S1D15722 Series Technical Manual

12. MPU INTERFACE (REFERENCE EXAMPLE)

This IC can be directly connected to the 80 series MPU and 68 series MPU. Using the serial interface
operates with fewer signal lines.
Sharing this IC with multiple chips enlarges the display area. In such cases, the IC that makes an access
individually using the chip select signal can be selected.
After being initialized by the pin, each input pin should be controlled successfully.
(1) 80 series MPU
V
CC
A1 to A7
_____
IORQ
D0 to D7
___
___
WR
____
RES
GND
(2) 68 series MPU
V
CC
A1 to A15
VMA
D0 to D7
R/
____
RES
GND
(3) Serial Interface
V
CC
A1 to A7
Port 1
Port 2
____
RES
GND
S1D15722D01B000 Technical Manual (Rev.1.1)
A0
Decoder
RD
______
RESET
Fig.11.1 80 Series
A0
Decoder
E
__
W
______
RESET
Fig.11.2 68 Series
A0
Decoder
______
RESET
Fig.11.3 Serial Control
12. MPU INTERFACE (REFERENCE EXAMPLE)
V
DD2
V
DD2
A0
___
CS
D0 to D7
___
RD
___
WR
____
RES
V
DD2
V
DD2
A0
___
CS
D0 to D7
E
__
R/ W
____
RES
V
DD2
V
DD2
A0
___
CS
SI
SCL
____
RES
EPSON
V
DD
V
DD
C86
P/S
V
SS
V
SS
V
DD
V
DD
C86
P/S
V
SS
V
SS
V
DD
V
DD
C86
P/S
V
SS
V
SS
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