The HT16C22 is a RAM Mapping 20×4 LCD Controller Driver IC manufactured by HOLTEK. Below are its specifications, descriptions, and features:
Specifications:
- Package: 48LQFP (Low-profile Quad Flat Package)
- Operating Voltage: 2.4V to 5.5V
- Display Segments: 20 segments × 4 commons
- Interface: I²C (400kHz max)
- Internal RAM: 20×4 bits
- Built-in RC Oscillator
- Low Power Consumption:
- Operating Current: 60μA (typical)
- Standby Current: <1μA
- Temperature Range: -40°C to +85°C
Descriptions:
- The HT16C22 is a memory-mapping LCD controller/driver designed for driving small to medium-sized LCD panels.
- It supports a 20×4 display configuration (20 segments × 4 commons).
- Communication is achieved via an I²C interface, simplifying connection to microcontrollers.
- Includes an internal RC oscillator, eliminating the need for an external clock source.
- Suitable for battery-powered and low-power applications due to its low current consumption.
Features:
- I²C Interface (slave mode, 7-bit address)
- Adjustable LCD Bias Voltage (1/2 or 1/3 bias)
- Software Configurable Display Settings (on/off, blinking)
- Wide Operating Voltage Range (2.4V–5.5V)
- Built-in Power-On Reset (POR)
- Supports Multiple Display Modes (static, 1/2 duty, 1/3 duty, 1/4 duty)
- High Noise Immunity
The HT16C22 is commonly used in industrial control panels, instrumentation, consumer electronics, and portable devices requiring low-power LCD driving.
For detailed electrical characteristics and timing diagrams, refer to the official HOLTEK datasheet.