杭州清达光电技术有限公司

电子标签上用25664OLED显示屏，该屏为长条形256*64分辨率的OLED显示屏，尺寸为3.12寸，内置SSD1322控制器，电压5/3v可选，接口为8080并口/SPI串口/I2C串口，显示效果为黑底黄字/黑底绿字/黑底白字
HGS25664A介绍如下

1) Outline Drawing: According to the annexed outline drawing

2) Number of Pixels: 256 × 64

3) Panel Size: 88.00 × 27.80 × 2.00 (mm)

4) Active Area: 76.78 × 19.18 (mm)

5) Pixel Pitch: 0.30 × 0.30 (mm)

6) Pixel Size: 0.28 × 0.28 (mm)

7) Weight: 9.95 (g)

电子标签上用25664OLED显示屏

1.5 Pin Definition

Pin Number Symbol Type Function

Power Supply

26 VCI P

Power Supply for Operation

This is a voltage supply pin. It must be connected to

external source & always be equal to or higher than VDD

& VDDIO.

25 VDD P

Power Supply for Core Logic Circuit

This is a voltage supply pin. It can be supplied

externally (within the range of 2.4~2.6V) or regulated

internally from VCI. A capacitor should be connected

between this pin & VSS under all circumstances.

24 VDDIO P

Power Supply for I/O Pin

This pin is a power supply pin of I/O buffer. It should

be connected to VDD or external source. All I/O signal

should have VIH reference to VDDIO. When I/O signal

pins (BS0~BS1, D0~D7, control signals…) pull high,

they should be connected to VDDIO.

2 VSS P

Ground of Logic Circuit

This is a ground pin. It also acts as a reference for the

logic pins. It must be connected to external ground.

3, 29 VCC P

Power Supply for OEL Panel

These are the most positive voltage supply pin of the

chip. They must be connected to external source.

5, 28 VLSS P

Ground of Analog Circuit

These are the analog ground pins. They should be

connected to VSS externally.

Driver

22 IREF I

Current Reference for Brightness Adjustment

This pin is segment current reference pin. A resistor

should be connected between this pin and VSS. Set the

current lower than 10uA.

4 VCOMH P

Voltage Output High Level for COM Signal

This pin is the input pin for the voltage output high level

for COM signals. A tantalum capacitor should be

connected between this pin and VSS.

27 VSL P

Voltage Output Low Level for SEG Signal

This is segment voltage reference pin.

When external VSL is not used, this pin should be left

open.

When external VSL is used, this pin should connect with

resistor and diode to ground.

Testing Pads

21 FR O

Cascade Application Connection Pin

This pin is No Connection pins. Nothing should be

connected to this pin. It should be left open individually.

1.5 Pin Definition (Continued)

Pin Number Symbol I/O Function

Interface

16

17

BS0

BS1 I

Communicating Protocol Select

These pins are MCU interface selection input. See the

following table:

BS0 BS1

3-wire SPI 1 0

4-wire SPI 0 0

8-bit 68XX Parallel 1 1

8-bit 80XX Parallel 0 1

20 RES# I

Power Reset for Controller and Driver

This pin is reset signal input. When the pin is low,

initialization of the chip is executed.

19 CS# I

Chip Select

This pin is the chip select input. The chip is enabled for

MCU communication only when CS# is pulled low.

18 D/C# I

Data/Command Control

This pin is Data/Command control pin. When the pin is

pulled high, the input at D7~D0 is treated as display data.

When the pin is pulled low, the input at D7~D0 will be

transferred to the command register. For detail

relationship to MCU interface signals, please refer to the

Timing Characteristics Diagrams.

14 E/RD# I

Read/Write Enable or Read

This pin is MCU interface input. When interfacing to a

68XX-series microprocessor, this pin will be used as the

Enable (E) signal. Read/write operation is initiated when

this pin is pulled high and the CS# is pulled low.

When connecting to an 80XX-microprocessor, this pin

receives the Read (RD#) signal. Data read operation is

initiated when this pin is pulled low and CS# is pulled

low.

When serial mode is selected, this pin must be connected

to VSS.

15 R/W# I

Read/Write Select or Write

This pin is MCU interface input. When interfacing to a

68XX-series microprocessor, this pin will be used as

Read/Write (R/W#) selection input. Pull this pin to

“High” for read mode and pull it to “Low” for write

mode.

When 80XX interface mode is selected, this pin will be

the Write (WR#) input. Data write operation is initiated

when this pin is pulled low and the CS# is pulled low.

When serial mode is selected, this pin must be connected

to VSS.

6~13 D7~D0 I/O

Host Data Input/Output Bus

These pins are 8-bit bi-directional data bus to be

connected to the microprocessor’s data bus. When serial

mode is selected, D1 will be the serial data input SDIN

and D0 will be the serial clock input SCLK.

Unused pins must be connected to VSS except for D2 in

serial mode.

1.5 Pin Definition (Continued)

Pin Number Symbol I/O Function

Reserve

23 N.C. -

Reserved Pin

The N.C. pin between function pins are reserved for

compatible and flexible design.

1, 30 N.C. (GND) -

Reserved Pin (Supporting Pin)

The supporting pins can reduce the influences from

stresses on the function pins. These pins must be

connected to external ground.

电子标签上用25664OLED显示屏