Direct Drive LCD Design Guide

3.Typical LCD Panel Connections

This section illustrates typical connections on an LCD panel and how they are interfaced to the MCU in a Direct Drive configuration.

3.1 LCD panel interface

Figure 7 Example Connections for a Kyocera TFT-LCD Panel

3.1.1Power Supplies

Many panels require multiple supplies. Check your panel’s specification to see how many ground and different voltage level connections it requires.

In the example case of a Kyocera 320x240 panel, 6x 0v (GND) lines are required, along with 2x +3.3v reference voltages. In addition, the backlight power supply is also required.

3.1.2Clock

Often referred to as the Dot Clock, the panel requires a synchronous clock signal to provide logic edges for clocking in data. The Red-Green-Blue (RGB) parallel data should be present on the data bus at the time of each rising edge of the clock. This provides the color setting for each individual pixel in turn. Read more about our specific implementation of the Dot Clock and the associated hardware options in Section 4

3.1.3HSync

Each period of HSync contains the Dot Clocks and data for each horizontal line on the panel

3.1.4VSync

Vsync provides synchronization for each packet of valid data in each line of pixels. The total time for the

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Renesas H8SX user manual Typical LCD Panel Connections, LCD panel interface, Clock, HSync, VSync
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H8S, H8SX specifications

Renesas H8S and H8SX microcontrollers are part of Renesas Electronics' H-series of 16-bit microcontrollers, widely known for their rich functionality, exceptional performance, and versatility in embedded applications. These microcontrollers are ideal for a variety of applications ranging from automotive systems to industrial automation and consumer electronics.

The key feature of the H8S series is its high-performance CPU architecture, which includes efficient instruction execution, allowing for faster processing of tasks. The H8S series operates at clock speeds typically up to 24 MHz, providing ample processing power for complex applications. The H8SX series builds upon the H8S foundation with enhanced performance capabilities, including advanced instruction sets and support for higher clock frequencies, which can reach up to 40 MHz.

One of the standout characteristics of the H8S and H8SX microcontrollers is their rich peripheral set. They offer multiple I/O ports, timers, ADCs (Analog-to-Digital Converters), and communication interfaces such as SPI, I2C, and UART. The built-in ADCs allow for accurate analog signal processing, making these microcontrollers suitable for measuring temperature, pressure, and other sensor inputs in real time.

Moreover, the H8SX series provides additional features like improved flash memory capacity, enabling more complex applications to be developed and more extensive firmware to be stored. With the integration of a high-performance interrupt controller, the H8SX models can manage multiple interrupt sources efficiently, allowing for real-time response to events.

The H8S and H8SX microcontrollers also support a variety of development environments and programming languages, making them accessible for developers with varying skill levels. They are compatible with both C and assembly language programming, along with a range of development tools and IDEs (Integrated Development Environments).

In terms of power consumption, these microcontrollers are designed to be energy-efficient, making them ideal for battery-operated devices. With features such as low-power modes that allow the device to enter sleep modes when inactive, the H8S and H8SX microcontrollers help extend the battery life of applications.

In summary, Renesas H8S and H8SX microcontrollers stand out due to their performance, extensive peripheral functionality, versatility, and energy efficiency. Their rich feature set and compatibility with a variety of development tools make them a desirable choice for developers looking to create innovative embedded solutions across multiple industries.
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