Description
HTM1601B: Industrial 16×1 LCD Character Display Solution
In the field of embedded systems and industrial control, a clear and stable visual interface is the core of human-machine interaction. The HTM1601B is a high-performance LCD Character Display capable of displaying 1 row of 16 characters,driver chip is ST7066U. With its compact design, extreme environmental adaptability, and mature control scheme, it has become the preferred display component for thousands of electronic products worldwide.
Product Specifications
According to the technical drawing, the key technical parameters of the HTM1601B are as follows:
Display Capacity: 16×1 characters, with each character consisting of a 5×8 dot matrix.
Outline Dimensions: 151.0mm x 40.0mm, featuring an extra-large viewing area (VA: 120mm x 23mm).
Controller IC: Built-in S6A0069 or equivalent compatible controller, ensuring excellent software compatibility.
Driving Conditions: Operating voltage VDD is 5.0V, with a 1/16 duty cycle and 1/5 bias.
Optical Mode: STN Grey mode, Positive, Transflective, with a 6 o’clock viewing angle.
Backlight System: High-brightness White LED backlight.
Temperature Range: Wide temperature design with an operating temperature of -20°C to +70°C and storage temperature of -30°C to +80°C.
Wide Range of Applications
This LCD Character Display is widely used in scenarios requiring high reliability due to its high contrast and durability:
- Industrial Control Terminals: Such as PLC programmers, CNC machine panels, industrial timers, and counters.
- Instrumentation: Precision multimeters, frequency meters, laboratory analytical equipment, and medical monitors.
- Smart Transportation and Power: Charging pile status screens, smart electricity meters, and power distribution monitoring terminals.
- Commercial Equipment: POS machines, vending machine control panels, and security alarm hosts.
- Communication Equipment: Rack-mounted server monitoring screens and router status displays.
Core Product Highlights
Superior Visual Performance: Utilizing STN Grey Positive technology, it maintains high readability even in strong light environments. Combined with the white LED backlight, it provides sharp character contrast day or night.
Industrial-Grade Durability: The wide operating temperature range of -20°C to +70°C allows it to perform in harsh outdoor equipment or rigorous industrial workshops.
Standardized Interface Design: It features an industry-standard 16-pin interface (including VSS, VDD, VO, RS, R/W, E, data bits DB0-DB7, and backlight A/K), greatly simplifying hardware integration.
Low Power Consumption: As a typical LCD Character Display, its operational power consumption is extremely low, making it ideal for battery-powered or heat-sensitive portable devices.
Technical FAQ
Q1: What are the functions of the 16 pins on the HTM1601B module?
A1: Based on the circuit definition, Pins 1 (VSS) and 2 (VDD) are for power input; Pin 3 (VO) is for contrast adjustment; Pins 4-6 are Register Select (RS), Read/Write (R/W), and Enable (E); Pins 7-14 are 8-bit bi-directional data lines (DB0-DB7); Pins 15-16 (A/K) are the positive and negative terminals for the LED backlight.
Q2: Why is this LCD labeled as Transflective?
A2: This means it combines the advantages of both reflective and transmissive types. In bright ambient light, it uses reflected light to display, which is energy-efficient and clear. In dark environments, the LED backlight can be turned on to pass through the liquid crystal layer, ensuring 24/7 visibility.
Q3: If my microcontroller (MCU) is a 3.3V system, can I drive this 5.0V LCD directly?
A3: The specification requires a VDD of 5.0V. While some 3.3V MCU I/O pins are 5V tolerant, it is recommended to use a level shifter or ensure sufficient voltage for the VO pin to maintain stable character contrast and system reliability.
Q4: What does a 6 o’clock viewing angle mean?
A4: This refers to the optimal viewing direction. For the HTM1601B, when the display is placed vertically, the image contrast and color shift are minimized when viewed from slightly below (the 6 o’clock position), making it best suited for dashboards installed at or slightly above eye level.
Please let me know if you need any specific technical details regarding the interface timing or initialization code for this LCD Character Display.
