S1D15715 Epson Electronics America, Inc., S1D15715 Datasheet - Page 17

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

5.3 System bus connection pins
Rev.1.0
Pin name
D7 to D0
(R/
(SCL)
____
RES
C86
(SI)
___
___
___
WR
P/S
CS
RD
(E)
A0
__
W)
I/O
I/O
I
I
I
I
I
I
I
8-bit bi-directional data bus to be connected to the standard 8-bit or 16-bit MPU
data bus.
When the serial interface is selected (P/S=LOW);
D0 to D5 switches to high impedance status.
When chip select is in non-active status, D0 to D7 switches to high impedance
status.
Normally the lowest order bit of the MPU address bus is connected to
discriminate data/commands.
Chip select signal. When
active and the input/output of data/command is enabled.
Reset operation is performed at the signal level.
MPU interface selection pin.
Serial data input/parallel data input selection pin.
When P/S=LOW, D5 to D0 switches to high impedance status. D5 to D0 can also
be HIGH, LOW or OPEN.
___
In serial mode, no data can be read from DDRAM.
Initialized by setting
RD (E) and
When connected to an 80-series MPU; This is active LOW.
When connected to an 68-series MPU; This is active HIGH.
D7: Serial data input (SI)
D6: Serial clock input (SCL)
A0=HIGH: The data on D7 to D0 is display data.
A0=LOW: The data on D7 to D0 is control data.
This pin connects the
This is used as an enable clock input pin of the 68-series MPU.
This pin connects the
The signals on the data bus are latched at the rising edge of the
This is used as the input pin of the read/write control signal.
R/
R/
C86=HIGH: 68-series MPU interface
C86=LOW: 80-series MPU interface
P/S=HIGH: Parallel data input
P/S=LOW: Serial data input
The following applies depending on the P/S status:
LOW, S1D15715 series data bus is in an output status.
When connected to an 80-series MPU; This is active LOW.
When connected to an 68-series MPU;
__
__
W=HIGH: Read
W=LOW: Write
HIGH
LOW
P/S
___
WR (R/
Data/Command
____
RES to LOW.
A0
A0
__
W) must always be HIGH or LOW.
___
WR signal of 80-series MPU.
___
RD signal of the 80-series MPU. While the signal is
___
CS =LOW, the MPU interface of the IC becomes
EPSON
D0 to D7
Description
SI(D7)
Data
S1D15715 Series Technical Manual
Read/Write
Write only
___
RD ,
___
WR
Serial Clock
SCL(D6)
-
___
WR signal.
Number of
pins
10
1
2
2
1
1
1
1
11