Specifications

Rev. 1.1 EPSON 3–31
S1D12205 Series
S1D12205
Series
12. MPU INTERFACES (REFERENCE)
The S1D12205 Series can be connected to the 80-series
or 68-series MPU. Also, it can operate with a less number
of signal lines via the serial interface.
If the MPU buses and ports are set to HIGH impedance
for a certain time due to RESET, the RESET signal must
be entered in the S1D12205 Series after the S1D12205’s
inputs have been determined.
VCC
A0
A1 to A7
D0 to D7
WR
RES
GND
MPU
Decoder
RES
V
DD
A0
CS
D0 to D7
RES
V
SS
C86
PS
IF
IORQ
WR
S1D12205
Series
VCC
A0
A1 to A7
D0 to D7
WR
RES
GND
MPU
Decoder
RES
V
DD
A0
CS
D0 to D7
RES
V
SS
C86
PS
IF
S1D12205
Series
IORQ
WR
V CC
RES
Port 4
Port 3
Port 2
Port 1
GND
MPU
RES
V
DD
V DD
or V SS
A0
CS
RES
V
SS
C86, WR
D0 to D5
PS
IF
SI
SCL
S1D12205
Series
80-Series MPU
68-Series MPU
Serial Interface