S1D12200 Epson Electronics America, Inc., S1D12200 Datasheet - Page 21

• Manufacturer Part Number: S1D12200
• Description: S1d12000 Series Lcd Driver Ic Technical Manual Technical Manual
• Manufacturer: Epson Electronics America, Inc.

S1D12200 Series
Pins for System Bus Connection
2–12
Pin name
D6 (SCL)
D5 ~ D0
D7 (SI)
RES
WR
P/S
CS
(E)
CK
A0
IF
I/O
I
I
I
I
I
I
I
I
RES: Indicates the active potential.
OPEN:Though “OPEN” is available, fixing the potential is
—:
HIGH HIGH HIGH D7
HIGH LOW HIGH D7
HIGH LOW LOW D7
8-bit input data bus. These pins are connected to a 8-bit or 16-bit
standard MPU data bus.
When P/S = LOW, the D7 and D6 pins are operated as a serial data
input and a serial clock input respectively.
Usually, this pin connects the least significant bit of the MPU address
bus and identifies a data command.
In case of a 68 series MPU, initialization can be performed by
changing RES
initialization can be performed by changing
A reset operation is performed by edge sensing of the RES signal.
An interface type for the 68/80 series MPU is selected by input level
after initialization.
Chip select signal. Usually, this pin inputs the signal obtained by
decoding an address bus signal. At the LOW level, this pin is
enabled.
<When connecting an 80 series MPU>
<When connecting a 68 series MPU>
This pin switches between serial data input and parallel data input.
Interface data length select pin for parallel data input.
When P/S = LOW, connect this pin to V
External input terminal
It must be fixed to HIGH when the internal oscillation circuit is used.
LOW —
P/S RES I/F
LOW : 68 series MPU interface
HIGH : 80 series MPU interface
HIGH
LOW
0 : Indicates that D0 to D7 are a command.
1 : Indicates that D0 to D7 are display data.
Active LOW. This pin connects the WR signal of the 80 series
MPU. The signal on the data bus is fetched at the rise of the WR
signal.
Active HIGH. This pin becomes an enable clock input of the 68
series MPU.
P/S
HIGH: 8-bit parallel input
LOW: 4-bit parallel input
recommended for noise-withstnading characteristical reason.
Indicates that it can be set at either HIGH or LOW, but fixing
the potential is required.
—
Chip Select Data/Command
CS
CS
D7
SI
. In case of an 80 series MPU,
EPSON
SCL —
D6
D6
D6
D6
Description
D5
D5
D5
D5
A0
A0
D4
D4
D4
D4
—
DD
D0 to D7
D3-D0
D3-D0
D3-D0
OPEN
OPEN
or V
Data
SI
.
SS
.
CS
CS
CS
CS
CS
Serial Clock
SCL
A0
A0
A0
A0
A0
–
WR
WR
WR
—
E
Rev. 1.4
No. of Pins
8
1
1
1
1
1
1
1