S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 377

• Manufacturer Part Number: S1D1
• Description: LCD Controller-driver With Built-in Character ROM
• Manufacturer: Epson Electronics America, Inc.

S1D15705 Series
6. FUNCTION DESCRIPTION
MPU Interface
Selection of interface type
The S1D15705 series transfers data through 8-bit bidirectional data buses (D7 to D0) or serial data input (SI). By setting
the polarity of the P/S pin to either HIGH or LOW, the 8-bit parallel data entry or serial data entry can be selected as
listed in Table 1.
Parallel interface
When the parallel interface is selected (P/S=HIGH), the S1D15705 series can directly be connected to the MPU bus
of either the 80 or 68 series MPU by setting the C86 pin to HIGH or LOW as listed in Table 2.
In addition, the data bus signal can be identified according to the combinations of the A0, RD (E), WR (R/W) signals
as listed in Table 3.
10–18
HIGH: Parallel data entry
LOW: Serial data entry
P/S
Common
H: 68 series MPU bus
L: 80 series MPU bus
A0
1
1
0
0
C86
68 series
R/W
CS1
CS1
CS1
1
0
1
0
CS2
CS2
CS2
CS1
CS1
CS1
RD
0
1
0
1
80 series
A0
A0
A0
CS2
CS2
CS2
Fix — to HIGH or LOW. HZ indicates the high impedance state.
EPSON
Table 1
Table 2
Table 3
WR
RD
RD
—
1
0
1
0
A0
A0
A0
WR
WR
—
RD
RD
E
Function
Display data read
Display data write
Status read
Control data write (command)
C86
C86
—
R/W
WR
WR
D7
D7
SI
D7 to D0
D7 to D0
D7 to D0
SCL
D6
D6
D5 to D0
D5 to D0
Rev. 3.1a
(HZ)