Chip on Glass LCD Module 320x240
Model No. WO320240D
►COG LCD Display
►Graphic LCD
►320 x 240 dots includes cursor
►Built-in controller RA8835
►+3.3V/+5V power supply
►1/240 duty cycle
►Interface : 6800/8080
DESCRIPTION
WO320240D is a monochrome graphic LCD module made of 320x240 dot matrix format. This STN COG module is built in with RA8835 controller IC; it supports 6800 and 8080 parallel interface. This COG module WO240320D is having the same outline dimension and VA size as TAB module WX320240D, but AA size is different. The WO320240D is an alternative item to replace WX320240D which TAB IC had been phased out. Comparing WO320240D (COG) to WX320240D (TAB), except the module structure is different; the outline dimension, VA size, interface, pin assignment, main electrical characteristics are the same, just AA size is a little different. If customers don’t need controller IC on your module, please choose WO320240G as option.
The supply voltage for logic of WO320240D is 3.0V to 3.6V, typical value 3.3V, 1/240 duty circle. This module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. WO320240D is available in FSTN positive LCD and with White LED backlight; please contact us if you need different LCD type and LED combination.
DRAWING
SPECIFICATIONS
Interface Pin Function
| Pin No. | Symbol | Level | Description |
|---|---|---|---|
| 1 | VSS | Ground | |
| 2 | VDD | Power supply for Logic | |
| 3 | VO | (Variable) | Operation voltage LCD driving |
| 4 | A0 | H/L | H:Data L:Instruction |
| 5 | ___ WR |
H | 8080 family: Write signal, 6800 family: R/W signal |
| 6 | ___ RD |
L | 8080 family: Read signal, 6800 family: Enable clock |
| 7-14 | DB0-DB7 | H/L | DB0 Data bus line |
| 15 | ___ CS |
H/L | Chip Enable |
| 16 | ___ RES |
H/L | Reset |
| 17 | VEE | Positive voltage output | |
| 18 | SEL1 | H/L | 8080 OR 6800 Family Interface Select ; H:68xx , L:80xx |
| 19 | A | Power supply for B/L+ | |
| 20 | K | Power supply for B/L- |
Mechanical Data
| Item | Standard Value | Unit |
|---|---|---|
| Number of dots | 320x240 | － |
| Outline dimension | 94.7 x 83.3 x 8.6 max | mm |
| View area | 81.4 x 61.0 | mm |
| Active area | 76.785 x 57.11 | mm |
| Dot size | 0.223 x 0.225 | mm |
| Dot pitch | 0.238 x 0.24 | mm |
| Duty | 1/240 | |
| Backlight | LED | |
| IC | RA8835 | |
Absolute Maximum Ratings
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Temperature | TOP | -20 | － | +70 | ℃ |
| Storage Temperature | TST | -30 | － | +80 | ℃ |
| Input Voltage | VIN | -0.3 | － | VDD+0.3 | V |
| Supply Voltage For Logic | VDD-VSS | -0.3 | － | 7.0 | V |
| Supply Voltage For LCD | VDD -V0 | 0 | － | 32 | V |
Electrical Characteristics
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage For Logic | VDD-VSS | － | 3.0 | 3.3 | 3.6 | V |
| VDD-VSS | － | 4.7 | 5.0 | 5.3 | V | |
| Supply Voltage For LCD | VOP | Ta=-20℃ Ta=25℃ Ta=70℃ |
－ 22.7 － |
－ 23.0 － |
－ 23.3 － |
V V V |
| Input High Volt. | VIH | － | 0.5VDD | － | VDD | V |
| Input Low Volt. | VIL | － | VSS | － | 0.2VDD | V |
| Output High Volt. | VOH | － | VDD-0.4 | － | － | V |
| Output Low Volt. | VOL | － | － | － | VSS+0.4 | V |
| Supply Current | IDD | VDD=3.3V | － | 63.5 | 100.0 | mA |
| IDD | VDD=5.0V | － | 52.0 | 80.0 | mA |
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