SEPS225 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

SEPS225

128 x 128 Dots, 262K Colors PM‐OLED Display Driver and Controller

Unspecified 

SYNCOAM Co., Ltd.

SEPS225

Version: 0.8

3. Pin Description

Pin Name

Number

Of Pins

I/O

Connected

To

Description

CPU

1

I

VSS or VDD

Selects the CPU type

Low : 80‐Series CPU, High : 68‐Series CPU

PS

1

I

VSS or VDD

Selects parallel/Serial interface type

Low : serial, High : parallel

Selects the SEPS225.

CSB

1

I

MPU

Low : SEPS225 is selected and can be accessed

High : SEPS225 is not selected and cannot be accessed

RS

1

I

MPU

Selects the data / command

Low : command, High : parameter / data

For an 80‐system bus interface, read strobe signal(active low)

RDB/E

1

I

MPU

For an 68‐system bus interface, bus enable strobe(active high)

When using SPI, fix it to VDD or VSS level

For an 80‐system bus interface, write strobe signal(active low)

WRB/RWB

1

I

MPU

For an 68‐system bus interface, read/write select

Low : Write, High : Read

When using SPI, fix it to VDD or VSS level

Serves as a 18_bit bi‐directional data bus

PS

Description

8_bit bus : DB[17:10]

DB[17:0]

18

I/O

MPU

1

9_bit bus : DB[17:9]

16_bit bus : DB[17:10], DB[8:1]

18_bit bus : DB[17:0]

DB[17] SCL : Synchronous clock input

0 DB[16] SDI : Serial data input

DB[15] SDO : Serial data output

Fix unused pins to the VSS level

OSCA1

OSCA2

Fine adjustment for oscillation

1

I

Oscillation‐ Tie 39 ㏀ ohms to OSCA1 between OSCA2

Resistor

When the external clock mode is selected, OSCA1 is used

1

O

external clock input

RESETB

1

I

MPU

Reset SEPS225(active low)

S[383:0]

384

O

PANEL SEPS225 Display column outputs

G[127:0]

128

O

PANEL SEPS225 Display row outputs

VDDH

4

‐

POWER External Column Driving Power Supply(8V ~ 18V)

VSSH

4

‐

POWER Return Ground for VDDH

VDD

2

‐

POWER Logic power supply(2.4V ~ 3.3V)

VSS

IREF

2

‐

POWER Logic ground.

1

‐

Resistor Tie 70 ㏀ ohms to VSS

TEST1

1

I VSS or VDD Selects the test mode

PRER

1

O

‐

Pre_charge R

PREG

1

O

‐

Pre_charge G

PREB

1

O

‐

Pre_charge B

EXPORT1

1

O

‐

OSC Test

VSYNCO

1

O

‐

Vertical Sync. Output

VSYNC

1

I

‐

Vertical Sync. Input when RGB mode is selected

HSYNC

1

I

‐

Horizontal Sync. Input when RGB mode is selected

DOTCLK

1

I

‐

Dot clock Input when RGB mode is selected

ENABLE

1

I

‐

Video enable Input when RGB mode is selected

3/44

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