9–30 EPSON
SED1278
MPU INTERFACE
The SED1278 has selectable 8- or 4-bit MPU interface.
An example of a typical 8-bit MPU interface is shown
figure 8.
Z80 SED1278
G1
A
B
C
G2A
G2B Y0
A0
A4
A5
A6
A7
IORQ
RD
WR
DB0
to
DB7
D0
to
D7
R/W
E
RS
Figure 8 Interfacing the SED1278 to the Zilog Z80®
