HT1622

The HT1622 is a dedicated RAM mapping display controller/driver manufactured by Holtek. This integrated circuit is specifically designed for driving dot matrix liquid crystal displays (LCDs), making it suitable for various applications requiring alphanumeric or graphical display capabilities.

Key Features:

• RAM Mapping Display: The HT1622 features a RAM mapping display architecture, allowing users to store display data in an internal RAM buffer and update the display content dynamically.

• Dot Matrix Display: It supports dot matrix LCDs, which are commonly used for displaying alphanumeric characters, symbols, and simple graphics by illuminating individual pixels arranged in a matrix format.

• Segment/Common Output Configuration: The controller/driver typically features segment and common output terminals for interfacing with the LCD panel, providing flexible display configuration options.

• Built-in LCD Driver: It integrates LCD driver circuitry, including voltage generation, waveform generation, and multiplexing functions, simplifying the design of LCD display systems.

• Multiple Display Modes: The HT1622 supports various display modes, including static, 1/2, 1/3, 1/4 duty cycles, and time-multiplexed modes, enabling versatile display configurations and power-saving options.

• Low Power Consumption: It is designed for low power consumption, making it suitable for battery-powered devices and energy-efficient applications.

• Serial Interface: The controller/driver communicates with an external microcontroller or host processor via a serial interface such as SPI (Serial Peripheral Interface) or I2C (Inter-Integrated Circuit), facilitating easy integration into digital systems.

• On-chip Oscillator: Some variants of the HT1622 may include an on-chip oscillator for generating internal clock signals, eliminating the need for external timing components.

Applications:

• Electronic Instruments: The HT1622 is used in electronic instruments such as digital multimeters, oscilloscopes, function generators, and signal analyzers for displaying measurement data, waveforms, and instrument settings.

• Consumer Electronics: It finds applications in consumer electronics products including digital clocks, thermometers, calculators, remote controls, and home appliances for displaying time, temperature, numerical values, and status indicators.

• Automotive Displays: The controller/driver is employed in automotive dashboard displays, instrument clusters, car audio systems, and infotainment consoles for displaying vehicle information, entertainment content, and navigation data.

• Industrial Control Panels: It is used in industrial control panels and HMI (Human-Machine Interface) devices for displaying process parameters, status indicators, and control options in manufacturing and automation systems.

• Medical Devices: The HT1622 is integrated into medical devices and equipment such as patient monitors, infusion pumps, and diagnostic instruments for displaying vital signs, treatment parameters, and diagnostic results.

• Communication Devices: It finds applications in communication devices such as two-way radios, walkie-talkies, and wireless intercom systems for displaying channel information, signal strength, and user settings.

• Gaming Devices: The controller/driver is utilized in gaming devices including handheld consoles, arcade machines, and gaming peripherals for displaying game graphics, scores, and menu options.

• POS Terminals: It can be integrated into point-of-sale (POS) terminals, cash registers, and self-service kiosks for displaying transaction details, product information, and promotional messages.