S1D15715 Epson Electronics America, Inc., S1D15715 Datasheet - Page 19

• Manufacturer Part Number: S1D15715
• Description: Liquid Crystal Display =lcd Driver
• Manufacturer: Epson Electronics America, Inc.

6. FUNCTIONAL DESCRIPTION
6.1 MPU interface
6.1.1 Interface type selection
S1D15715 Series can transfer data via 8-bit bi-directional buses (D7 to D0) or via serial data input (SI).
Through selecting the P/S pin polarity to HIGH or LOW, it is possible to select either 8-bit parallel data input or
serial data input as shown in Table 1.
6.1.2 Parallel interface
When the parallel interface has been selected (P/S=HIGH), then it is possible to connect directly to either an
80-series MPU or 68-series MPU (as shown in Table 2) by selecting C86 pin to either HIGH or LOW.
Moreover, the S1D15715 Series identifies the data bus signal according to A0,
shown in Table 3.
Rev.1.0
HIGH: Parallel input
LOW: Serial input
Common
A0
1
1
0
P/S
HIGH: 68-series MPU bus
LOW: 80-series MPU bus
C86
68-series
___
___
___
CS
CS
CS
R/
1
0
0
__
W
A0
A0
A0
___
___
___
___
CS
CS
CS
RD
0
1
1
80-series
___
___
RD
RD
-
Table 1
Table 2
Table 3
EPSON
___
WR
A0
A0
A0
1
0
0
___
WR
___
WR
-
___
___
RD
RD
S1D15715 Series Technical Manual
E
-: Must always be HIGH or LOW.
C86
C86
-
Writes control data (command)
HZ is a high impedance state
Reads the display data
Writes the display data
R/
___
WR
___
WR
__
W
D7
D7
SI
Function
___
RD(E),
D7 to D0
D7 to D0
D7 to D0
SCL
D6
D6
WR(R/
___
D5 to D0
D5 to D0
__
W) signals, as
HZ
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