Home Products COG LCD WO12864U

128x64 COG LCD Display Module

Model No. WO12864U

►Monochrome Displays
►Graphic LCD
►COG LCD
►Display Format : 128x64
►Built-in controller ST7565P
►3.3V power supply
►1/64 duty cycle, 1/9 bias
►Interface : 6800/8080/SPI

DESCRIPTION

Winstar released a new COG mono graphic LCD module WO12864U which is made of 128x64 dot matrix format. This COG module WO12864U is built in with ST7565P IC, it supports 8-bit 6800, 8-bit 8080 parallel and 4-wire serial SPI interface. The WO12864U is having the same outline dimension, AA size, VA size as WX12864U2. The power supply (VDD) of WO12864U is 3.3V, VOP 8.5V which are the same as WX12864U2. The WO12864U is an alternative item to replace WX12864U2 which TAB IC had been phased out. Comparing WO12864U and WX12864U2, the outline dimension, AA size, VA size, interface, pin assignment, main electrical characteristics are all the same.

This module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. WO12864U is available in FSTN positive LCD and with White LED backlight; without backlight option is available as well. Please contact us if you need different LCD type and LED combination.

 

DRAWING

WO12864U

SPECIFICATIONS

Interface Pin Function

Pin No. Symbol I/O Description
1 VDD ­_ Power supply pin for logic.
2 VSS _ Ground pin, connected to 0V
3 /CS1 I Chip select input pin. Interface access is enabled when CS1B is "L" and CB2 is "H" . When chip is on-active (CS1B="H" or CS2="L"), D[7:0] pins are high impedance.
4 CS2
5 /RES I Hardware reset input pin. When RSTB is "L", internal initialization is executed and the internal registers will be initialized.
6 A0 I It determines whether the access is related to data or command.
A0=“H”: Indicates that signals on D[7:0] are display data.
A0=“L”: Indicates that signals on D[7:0] are command.
7 R/W I Read/Write execution control pin. When PSB is "H",
C86 MPU Type RWR Description
H 6800 series R/W Read/Write control input pin.
R/W="H": read
R/W="L": write
L 8080 series /WR Write enable input pin.
Signals on D[7:0] will be latched at the rising edge of /WR signal.

RWR is not used in serial interface and should fix to "H" by VDD.
8 E I Read/Write execution control pin. When PSB is "H",
C86 MPU Type ERD Description
H 6800 series E Read/Write control input pin.
R/W="H": When E is "H", D[7:0] are in output mode.
R/W="L": Signals on D[7:0] are latched at the falling edge of E signal
L 8080 series /RD Read enable input pin.
When /RD is "L", D[7:0] are in output mode.

ERD is not used in serial interface and should fix to "H" by VDD.
9-16 D0-D7 I/O Data bus line
17 C86 I C86 selects the microprocessor type in parallel interface mode.
PSB C86 Selected Interface
"H" "H" Parallel 6800 Series MPU Interface
"H" "L" Parallel 8080 Series MPU Interface
"L" "X" Serial 4-Line SPI Interface

Please refer to “APPLICATION NOTES” and “Microprocessor Interface” (Section 6) for detailed connection of the selected interface.
18 P/S I PSB selects the interface type: Serial or Parallel.

General Specification

Item Dimension Unit
Number of dots 128 × 64
Module dimension 58.2 × 44.7 × 3.9(MAX) mm
View area 52.0 × 33.5 mm
Active area 47.76 × 30.29 mm
Dot size 0.40 × 0.35 mm
Dot pitch 0.42 × 0.37 mm
Duty 1/64
Backlight Type LED
IC ST7565P

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

Item Symbol Condition Min. Typ. Max. Unit
Supply Voltage For Logic VDD-VSS 3.0 3.3 V
Supply Voltage For LCD VOP Ta=-20℃
Ta=25℃
Ta=70℃

8.3

8.5

8.7
V
V
V
Input High Volt. VIH 0.8VDD VDD V
Input Low Volt. VIL VSS 0.2VDD V
Output High Volt. VOH 0.8VDD VDD V
Output Low Volt. VOL VDD 0.2VDD V
Supply Current IDD VDD=3.3V 1 2 mA
 

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