128×64 COG LCD Modules

Model No. WO12864B

  • 128×64 COG LCD
  • Graphic LCD
  • IC: ST7565P
  • 3.3V power supply
  • 1/65 duty cycle
  • WO12864B : thickness 12.1mm (Max)
  • WO12864B1 : thickness 6.0mm
  • Interface : 6800/8080/SPI
Category:

Description

WO12864B is a 2.8 inch 128×64 COG monochrome Graphic LCD module. This LCD module is built in with ST7565P controller or equivalent IC.  It supports 6800 8-bit, 8080 8-bit parallel and SPI interface. This LCD module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃.  This WO12864B COG display is very suitable for the applications that demand more compact package displays.

There are two versions for WO12864B series, which is different on thickness as below:
►WO12864B : thickness 12.1mm (Max)
►WO12864B1 : thickness 6.0mmWO12864A1 is a 2.2 inch 128×64 COG monochrome Graphic LCD module. This LCD module is built in with ST7565P controller or equivalent IC.  It supports 6800 8-bit, 8080 8-bit parallel and SPI interface. This LCD module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃.  This LCD COG 128×64 display is very suitable for the applications that demand more compact package displays.

Drawing

Drawing


Data source ref:WO12864B-TFH#

Interface Pin Function

Interface Pin Function

Pin No. Symbol Level Description
1 /CS1B I This is the chip select signal.
2 /RES I When RES is set to “L”, the setting are initialized.
3 A0 I This is connect to the least significant bit of the normal MPU address bus, and it determines whether the data bits are data or command.
A0 = “H”: Indicates that D0 to D7 are display data.
A0 = “L”: Indicates that D0 to D7 are control data.
4 /WR(R/W) I • When connected to 8080 series MPU, this pin is treated as the “/WR” signal of the 8080 MPU and is LOW-active.
The signals on the data bus are latched at the rising edge of the /WR signal.
• When connected to 6800 series MPU, this pin is treated as the “R/W” signal of the 6800 MPU and decides the access type :
When R/W = “H”: Read.
When R/W = “L”: Write.
5 /RD(E) I • When connected to 8080 series MPU, this pin is treated as the “/RD” signal of the 8080 MPU and is LOW-active.
The data bus is in an output status when this signal is “L”.
• When connected to 6800 series MPU, this pin is treated as the “E” signal of the 6800 MPU and is HIGH-active.
This is the enable clock input terminal of the 6800 Series MPU.
6~13 D0~D7 I/O Data bus line
14 VDD Power supply Power supply
15 VSS Power supply Ground
16 VOUT O DC/DC voltage converter. Connect a capacitor between this terminal and vss or VDD
17 CAP3P O DC/DC voltage converter. Connect a capacitor between this terminal and the CAP1N terminal.
18 CAP1N O DC/DC voltage converter. Connect a capacitor between this terminal and the CAP1P terminal.
19 CAP1P O DC/DC voltage converter. Connect a capacitor between this terminal and the CAP1N terminal.
20 CAP2P O DC/DC voltage converter. Connect a capacitor between this terminal and the CAP2N terminal.
21 CAP2N O DC/DC voltage converter. Connect a capacitor between this terminal and the CAP2P terminal.
22~26 V4~V0 Power supply This is a multi-level power supply for the liquid crystal drive.
27 VR I Output voltage regulator terminal. Provides the voltage between VSS and V0 through a resistive voltage divider.
28 C86 I This is the MPU interface selection pin.
C86 = “H”: 6800 Series MPU interface.
C86 = “L”: 8080 Series MPU interface
29 P/S I This is the parallel data input/serial data input switch terminal.
P/S = “H”: Parallel data input.
P/S = “L”: Serial data input.
The following applies depending on the P/S status:

P/S Data/Command Data Read/Write Serial Clock
“H” A0 D0 to D7 /RD,/WR X
“L” A0 SI(D7) Write only SCL(D6)

When P/S = “L”, D0 to D5 fixed “H”.
/RD (E) and /WR (R/W) are fixed to either “H” or “L”.
With serial data input, It is impossible read data from RAM
30 NC – No connection.

Mechanical Data

Mechanical Data

Item Dimension Unit
Number of Dots 128 x 64 －
Module dimension 89.7 x 49.8 x 11.8 mm
View area 69.0 x 36.5 mm
Active area 63.97 x 31.97 mm
Dot size 0.47 x 0.47 mm
Dot pitch 0.5 x 0.5 mm
Duty 1/65 , 1/9 Bias
Backlight Type LED
IC ST7565P
Interface 6800/8080/4-Line SPI

 

Absolute Maximum Ratings

Absolute Maximum Ratings

Item Symbol Min Typ Max Unit
Operating Temperature TOP -20 － +70 ℃
Storage Temperature TST -30 － +80 ℃
Power Supply Voltage VDD -0.3 － 3.6 V
Power supply voltage (VDD standard) V0,VOUT -0.3 － 14.5 V
Power supply voltage (VDD standard) V1,V2,V3,V4 -0.3 － V0+0.3 V

Electrical Characteristics

Electrical Characteristics

Item Symbol Condition Min Typ Max Unit
Supply Voltage For Logic VDD-VSS － 2.7 － 3.3 V
Supply Voltage For LCM V0-VSS Ta=-20℃
Ta=25℃
Ta=70℃		 9.5
9.2
8.95		 9.8
9.45
9.2		 10.5
9.8
9.45		 V
V
V
Input High Volt. VIH － 0.8 VDD － VDD V
Input Low Volt. VIL － VSS － 0.2VDD V
Output High Volt. VOH IOUT=-0.5mA 0.8VDD － VDD V
Output Low Volt. VOL IOUT=0.5mA VSS － 0.2VDD V
Supply Current(No include LED Backlight) IDD － － 0.6 2.0 mA

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