SED1565 EPSON [Epson Company], SED1565 Datasheet - Page 26

• Manufacturer Part Number: SED1565
• Description: Direct display of RAM data through the display data RAM
• Manufacturer: EPSON [Epson Company]

SED1565 Series
DESCRIPTION OF FUNCTIONS
The MPU Interface
Selecting the Interface Type
With the SED1565 Series chips, data transfers are done
through an 8-bit bi-directional data bus (D7 to D0) or
The Parallel Interface
When the parallel interface has been selected (P/S =
“H”), then it is possible to connect directly to either an
Moreover, data bus signals are recognized by a
combination of A0, RD (E), WR (R/W) signals, as
shown in Table 3.
8–24
Shared
A0
1
1
0
0
H: Parallel Input
L: Serial Input
6800 Series
P/S
H: 6800 Series MPU Bus
L: 8080 MPU Bus
R/W
1
0
1
0
P/S
CS1
CS1
CS1
RD
0
1
0
1
CS2
CS2
CS2
8080 Series
CS1
CS1
CS1
A0
A0
A0
EPSON
Table 3
Table 1
Table 2
CS2
CS2
CS2
RD
RD
—
WR
through a serial data input (SI). Through selecting the P/
S terminal polarity to the “H” or “L” it is possible to
select either parallel data input or serial data input as
shown in Table 1.
8080-system MPU or a 6800 Series MPU (as shown in
Table 2) by selecting the C86 terminal to either “H” or
to “L”.
1
0
1
0
“—” indicates fixed to either “H” or to “L”
WR
WR
—
A0
A0
A0
C86
C86
RD
RD
—
Reads the display data
Writes the display data
Status read
Write control data (command)
E
R/W
WR
WR
D7
D7
SI
Function
SCL
D6
D6
D7~D0
D7~D0
D7~D0
D5~D0
D5~D0
(HZ)