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| Categories | COG LCD Module | 
|---|---|
| Brand Name: | HOTHMI | 
| Model Number: | HTG12864-20 | 
| Place of Origin: | Dongguan, China | 
| MOQ: | 2 | 
| Payment Terms: | L/C, D/A, T/T, D/P, Western Union, MoneyGram | 
| Supply Ability: | 99999 | 
| Delivery Time: | 25 days | 
| Product type: | COG | 
| Show contents: | 128x64 | 
| Outline size(mm): | 53.2x37.8x2.8 | 
| Size of View Window(mm): | 45.2x27.0 | 
| Display size(mm): | 40.92x24.28 | 
| Point spacing(mm): | 0.32x0.38 | 
| Visual angle: | 6H | 
| Connection PIN Number: | 28PIN | 
| Interface mode: | MCU/8bit | 
| Working temperature: | -20~70℃ | 
| Power supply voltage: | 3.3v | 
| Driver chip model: | ST7565R | 
| Product application: | electricity meter | 
| Company Info. | 
| Hotdisplay Technology Co.Ltd | 
| View Contact Details | 
| Product List | 
128X64 Graphic COG LCD ST7565R | FSTN Display with White Side Backlight/HTG12864-20
HOTLCD 128x64 graphic Chip-On-Glass (COG) Liquid Crystal Display shows dark pixels on a white background. This transflective LCD Display is visible with ambient light or a backlight while offering a wide operating temperature range from -20 to 70 degrees Celsius. This HTG12864-20 display includes mounting holes. It has an optimal view of 6:00, operates at 3.3V supply voltage and is RoHS compliant.
Product parameters
| ITEM | STANDARD VALUE | UNIT | 
| Number of dots | 128x64 DOTS | ---- | 
| Module dimension | 53.2x37.8x2.8 | mm | 
| View display area | 40.92x24.28 | mm | 
| Dot size | 0.28x0.34 | mm | 
| Dot pitch | 0.32x0.38 | mm | 
| Operating temp | -20~70 | ℃ | 
| Storage temp | -30~80 | ℃ | 
| Driving Method | 1/ 128 DUTY,1/ 12 BIAS,VOP= 3.3V | |
| Viewing direction | 6 O’CLOCK | |
| Display mode | FSTN | |
| Display type | TRANSMISSIVE / NEGATIVE | |
| Driver IC | ST7565R | |
| Backlight | WHITE | |
Terminal Function
| Pin No. | Pin Name | Function | 
| 1 | /CS1 | This is the chip select signal. | 
| 2 | /RES | Rester Pin(L->H) | 
| 3 | A0 | A0 = “H”: Indicates that D0 to D7 are display data. A0 = “L”: Indicates that D0 to D7 are control data. | 
| 4 | /WR | Write (/WR ) control signal input. | 
| 5 | /RD | Read (/RD ) control signal input. | 
| 6~13 | DB0-DB7 | 8bit Date bus, When the serial interface (SPI-4) is selected (P/S = “L”) : D7 :serial data input (SI); D6 : the serial clock input (SCL). | 
| 14 | VSS | Negative power supply,0V | 
| 15 | VOUT | DC/DC voltage converter. | 
| 16~20 | C3+,C1-,C1+,C2+,C2- | DC/DC voltage converter | 
| 21~25 | V4,V3,V2,V1,V0 | LCD driving voltages. | 
| 26 | C86 | This is the MPU interface selection pin. C86 = “H”: 6800 Series MPU interface. C86 = “L”: 8080 Series MPU interface. | 
| 27 | P/S | This pin configures the interface to be parallel mode or serial mode. P/S = “H”: Parallel data input/output. P/S = “L”: Serial data input. The following applies depending on the P/S status: When P/S = “L”, D0 to D5 must be fixed to “H”. /RD (E) and /WR (R/W) are fixed to either “H” or “L”. The serial access mode does NOT support read operation. | 
| 28 | VDD | Positive power supply,3.3V | 
General Specification
| Item | Dimension | Unit | 
|---|---|---|
| Number of Dots | 128 x 64 dots | - | 
| Module dimension | 53.2x37.8x2.8 | mm | 
| View area | 45.2x27.0 | mm | 
| Active area | 40.92x24.28 | mm | 
| Dot size | 0.28x0.34 | mm | 
| Dot pitch | 0.32x0.38 | mm | 
| Duty | 1/65 , 1/9 Bias | |
| Backlight Type | LED | |
| IC | ST7565R | |
| Interface | MCU/8bit | |
Absolute Maximum Ratings
| Item | Symbol | Min | Typ | Max | Unit | 
|---|---|---|---|---|---|
| Operating Temperature | TOP | -20 | - | +70 | ℃ | 
| Storage Temperature | TST | -30 | - | +80 | ℃ | 
| Input Voltage | VI | -0.3 | - | VDD+0.3 | V | 
| Digital Power Supply Voltage | VDD-Vss | -0.3 | - | 3.6 | V | 
| LCD Power supply voltage | V0-XV0 | -0.3 | - | 16 | V | 
Electrical Characteristics
| Item | Symbol | Condition | Min | Typ | Max | Unit | 
|---|---|---|---|---|---|---|
| Supply Voltage For Logic | VDD-VSS | - | 2.7 | 3.0 | 3.3 | V | 
| Supply Voltage For LCM | VOP | Ta=-20℃ Ta=25℃ Ta=70℃ | - 9.15 - | - 9.45 - | - 9.75 - | V V V | 
| Input High Volt. | VIH | - | 0.7 VDD | - | VDD | V | 
| Input Low Volt. | VIL | - | Vss | - | 0.3VDD | V | 
| Output High Volt. | VOH | - | 0.8 VDD | - | VDD | V | 
| Output Low Volt. | VOL | - | Vss | - | 0.2 VDD | V | 
| Supply Current | IDD | VDD=3.0V | - | 0.45 | 0.9 | mA | 
|   | 
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