Direct Drive LCD Design Guide

Figure 6 LCD Panel Macro Definitions

2.6 LCD Platform Configuration

The LCD Direct Driver is configured to operate with a given hardware platform by setting macro definitions. These values will have to be determined from the schematics on the hardware platform. As an example, the demonstration code can be compared the LCD direct drive hardware schematics.

2.6.1FRAME_CS

This is the numeric value of the CS pin used for the frame buffer, for example if CS2 is used, a value of “2” would be entered.

2.6.2FRAME_BUS_CYCLES

Enter the number of BCLK cycles that are required to access the frame RAM (only used in SRAM configurations).

2.6.3CAS_LATENCY

Enter the configured CAS latency for the SDRAM (only used in SDRAM configurations).

2.6.4SDRAM_PAGE_SIZE

Enter the SDRAM page size in words (only used in SDRAM configurations).

2.6.5EDMAC_DD

Enter the name of the ExDMAC being used for the LCD Direct Drive. For example, if ExDMAC channel 2 is being used, set the value to “EXDMAC2”.

2.6.6Xxxx_PORT

Enter the associated port for the requested signal mapping. For example if the LCD_BACKLIGHT is on port PM1, set the port value to “M”.

2.6.7Xxxx_PIN

Enter the associated port for the requested signal mapping. For example if the LCD_BACKLIGHT is on port PM1, set the pin value to “1”.

2.6.8Xxxx_INTC

Enter the SFR field for the associated interrupt controller peripheral. For example if the H8SX ExDMAC 2 is being used, enter “INTC.IPRJ.BIT._EXDMAC2”.

2.6.9Xxxx_VECT

Enter the interrupt vector number for the associated peripheral. For example if the H8SX ExDMAC 2 is being used, enter “142”.

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Renesas H8SX user manual LCD Platform Configuration
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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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