Kirish
This manual provides essential information for the setup, operation, and maintenance of the simair SMH1602-L 16x2 Character LCD Display Module. This module features a 16-character by 2-line display with an RGB color backlight, offering versatile display options for various electronic projects. Please read these instructions carefully before use to ensure proper functionality and longevity of the product.
Texnik xususiyatlari
The following table details the technical specifications of the SMH1602-L LCD module:
| Parametr | Qiymat |
|---|---|
| Model raqami | SMH1602-L |
| Modul hajmi (U x G x Y) | 80 mm x 36 mm x 12 mm |
| View Area (W x H) | 64.5 mm x 16 mm |
| Character Size (W x H) | 2.95 mm x 5.15 mm |
| Character Pitch (W x H) | 3.5 mm x 5.6 mm |
| Interfeys | 6800 4 bitli parallel, 6800 8 bitli parallel |
| View Yo'nalish | 6 O'clock |
| LCD rejimi | FSTN (Gray-white, Black) |
| Operatsion jildtage | 3.3V / 5V |
| Haydovchi IC | SPLC780D yoki ekvivalenti |
| Sof og'irlik | 35 gr |
| Haydash usuli | 1/16 DUTY, 1/5 BIAS |
| Belgilar soni | 16 ta belgi x 2 qator |
| Ishlash harorati | -20℃ ~ +70℃ |
| Saqlash harorati | -30℃ ~ +80℃ |
| Displey rejimi | 1000:1 |
The module supports both 3.3V and 5V operating voltages, making it compatible with a wide range of microcontrollers. The FSTN LCD mode provides a clear display, complemented by an RGB backlight for customizable color options.
Figure 1: SMH1602-L LCD Module Overview
Tashqi o'lchamlar
The physical dimensions of the SMH1602-L module are 80.0mm (Length) x 36.0mm (Width) x 12.0mm (Height). The pin spacing is 2.54mm, and it features 18 pins for connection.
Figure 2: External Dimensions Diagram
Figure 3: Key Dimensions and Voltage Ma'lumot
Pin tavsiflari
The module features an 18-pin interface. The function of each pin is described below:
| BUYUM | RAMAZ | DARAJA | FUNCTION |
|---|---|---|---|
| 1 | VSS | 0V | Quvvatli zamin |
| 2 | VDD | +3.3V/5.0V | Mantiq uchun quvvat manbai |
| 3 | V0 | - | Kontrastni sozlang |
| 4 | RS | H/L | H: Data L: Command |
| 5 | R/W | H/L | H: Read L: Write |
| 6 | E | H, H->L | Signalni yoqish |
| 7~14 | DB0~DB7 | H/L | Ma'lumotlar avtobusi |
| 15 | LED-A | +3.3V/5.0V | LED Backlight Anode |
| 16 | LED-R(KIzil) | +3.3V/5.0V | LED Backlight Cathode (Red) |
| 17 | LED-G(yashil) | +3.3V/5.0V | LED Backlight Cathode (Green) |
| 18 | LED-B(MOV) | +3.3V/5.0V | LED Backlight Cathode (Blue) |
Figure 4: Pin Descriptions Diagram
O'rnatish va o'rnatish
To integrate the SMH1602-L LCD module into your project, follow these general steps:
- Quvvat ulanishi: Connect Pin 1 (VSS) to Ground (0V) and Pin 2 (VDD) to your logic power supply (+3.3V or +5V). Ensure your microcontroller's logic level matches the chosen VDD.
- Kontrastni sozlash: Connect Pin 3 (V0) to a potentiometer (typically 10kΩ) with its ends connected to VDD and VSS. The wiper of the potentiometer connects to V0, allowing you to adjust the display contrast.
- Boshqaruv signallari:
- RS (Register Select): Connect Pin 4 to a digital output pin on your microcontroller. High for data, Low for command.
- R/W (Read/Write): Connect Pin 5 to a digital output pin. High for reading from LCD, Low for writing to LCD. For most applications, this can be tied to Ground if only writing to the LCD.
- E (Enable): Connect Pin 6 to a digital output pin. A high-to-low pulse on this pin latches data into the LCD.
- Ma'lumotlar avtobusi: Connect Pins 7-14 (DB0-DB7) to digital I/O pins on your microcontroller. You can use either 4-bit or 8-bit parallel mode. For 4-bit mode, typically only DB4-DB7 are used, and DB0-DB3 are left unconnected.
- RGB orqa yorug'likni boshqarish:
- LED-A (Anode): Connect Pin 15 to +3.3V or +5V (matching VDD).
- LED-R (Red Cathode): Connect Pin 16 to a digital output pin (often via a current-limiting resistor) to control the Red component.
- LED-G (Green Cathode): Connect Pin 17 to a digital output pin (often via a current-limiting resistor) to control the Green component.
- LED-B (Blue Cathode): Connect Pin 18 to a digital output pin (often via a current-limiting resistor) to control the Blue component.
By controlling the individual R, G, and B cathodes, you can achieve various backlight colors. Ensure appropriate current-limiting resistors are used for the backlight LEDs to prevent damage.
Always double-check your wiring before applying power to prevent damage to the module or your microcontroller.
Foydalanish bo'yicha ko'rsatmalar
The SMH1602-L LCD module is controlled via a parallel interface, typically using a microcontroller. The SPLC780D (or equivalent) controller is compatible with standard HD44780-based LCD libraries available for most microcontrollers (e.g., Arduino LiquidCrystal library).
Displaying Characters:
- Initializatsiya: After power-up, the LCD needs to be initialized by sending a sequence of command bytes. This typically involves setting the interface mode (4-bit or 8-bit), display on/off, cursor settings, and clearing the display.
- Buyruqlarni yuborish: To send a command (e.g., clear display, set cursor position), set the RS pin LOW, R/W pin LOW, place the command byte on the data bus (DB0-DB7 or DB4-DB7 for 4-bit mode), and pulse the E pin from HIGH to LOW.
- Ma'lumotlarni yuborish: To send character data to be displayed, set the RS pin HIGH, R/W pin LOW, place the character ASCII byte on the data bus, and pulse the E pin from HIGH to LOW.
Controlling RGB Backlight:
The RGB backlight is controlled by applying appropriate voltage levels to the LED-R, LED-G, and LED-B cathode pins (Pins 16, 17, 18). Since these are cathodes, pulling a pin LOW (to ground) will turn on that color component, assuming LED-A (Pin 15) is connected to VDD.
- To turn on Red: Set LED-R LOW, LED-G HIGH, LED-B HIGH.
- To turn on Green: Set LED-R HIGH, LED-G LOW, LED-B HIGH.
- To turn on Blue: Set LED-R HIGH, LED-G HIGH, LED-B LOW.
- To turn on White (all colors): Set LED-R LOW, LED-G LOW, LED-B LOW.
- To turn off backlight: Set LED-R HIGH, LED-G HIGH, LED-B HIGH.
By using Pulse Width Modulation (PWM) on the R, G, and B pins, you can achieve a wide spectrum of colors and adjust brightness.
Video 1: Demonstration of RGB Backlight and Character Display
Muammolarni bartaraf qilish; nosozliklarni TUZATISH
- No Display/Garbled Characters:
- Check power connections (VDD, VSS) and ensure correct voltage (3.3V yoki 5V).
- Adjust the contrast potentiometer (V0). Sometimes the display appears blank if contrast is set too high or too low.
- Verify all data and control lines (RS, R/W, E, DB0-DB7) are correctly wired and connected to the appropriate microcontroller pins.
- Ensure your initialization code matches the LCD controller (SPLC780D) and the chosen interface mode (4-bit or 8-bit).
- Check for loose connections or solder bridges on the module or breadboard.
- Orqa yorug'lik ishlamayapti:
- Verify LED-A (Pin 15) is connected to VDD.
- Ensure LED-R, LED-G, LED-B (Pins 16, 17, 18) are correctly connected to digital output pins and are being driven LOW to activate the respective color.
- Check for proper current-limiting resistors on the backlight cathode pins.
- Confirm the backlight pins are receiving the correct voltage/signal from the microcontroller.
- Vaqti-vaqti bilan yuzaga keladigan muammolar:
- Ensure stable power supply. Add decoupling capacitors near the VDD pin if experiencing noise.
- To'g'ri topraklama mavjudligini tekshiring.
- Review your code for timing issues, especially with the Enable (E) pulse.
Xizmat
To ensure the longevity and optimal performance of your SMH1602-L LCD module:
- Ishlov berish: Handle the module by its edges to avoid touching the display area or sensitive electronic components.
- Tozalash: Yumshoq, tuksiz matodan foydalaning, ozgina quritingampened with water or a mild screen cleaner, to gently wipe the display surface. Avoid abrasive materials or harsh chemicals.
- Saqlash: Store the module in a dry, dust-free environment within the specified storage temperature range (-30℃ to +80℃).
- Quvvatlantirish manbai: Always use a stable and regulated power supply within the specified operating voltage (3.3V or 5V). Overvoltage can permanently damage the module.
- ESD himoyasi: Take precautions against Electrostatic Discharge (ESD) when handling the module, as static electricity can damage sensitive components.
Kafolat va qo'llab-quvvatlash
The SMH1602-L LCD module comes with a 1-year product warranty and lifetime technical support from simair. For any technical assistance or warranty claims, please contact the seller directly.
Service Commitments:
- Tez yetkazib berish: Efforts are made to ensure prompt delivery.
- To'lovni qaytarish siyosati: Refunds may be issued for delayed delivery, lost packages, or damaged items.
For detailed information regarding specific service terms, please refer to the official product page or contact customer support.
