R61509V

Target Spec

Moving Picture Display via RGB Interface

The R61509V supports RGB interface for moving picture display and incorporates RAM for storing display data, which provides the following advantages in displaying a moving picture.

1.The window address function enables transferring data only within the moving picture area

2.It becomes possible to transfer only the data written over the moving picture area

3.By reducing data transfer, it can contribute to lowering the power consumption of the whole system

4.The data in still picture area (icons etc.) can be written over via system interface while displaying a moving picture via RGB interface

RAM access via system interface in RGB interface operation

The R61509V allows RAM access via system interface in RGB interface operation. In RGB interface operation, data is written to the internal RAM in synchronization with DOTCLK while ENABLE is “Low”. When writing data to the RAM via system interface, set ENABLE “High” to stop writing data via RGB interface. Then set RM = “0” to enable RAM access via system interface. When reverting to the RGB interface operation, wait for the read/write bus cycle time. Then, set RM = “1” and the index register to R22h to start accessing RAM via RGB interface. If there is a conflict between RAM accesses via two interfaces, there is no guarantee that the data is written in the RAM.

The following is an example of rewriting still picture data via system interface while displaying a moving picture via RGB interface.

VSYNCX

ENABLE

DOTCLK

DB17-0

System Index

interface R22

updating frame data

Note 3)

RM = 0

writing

moving picture area

RAM address set

Index

Update data in the

RAM

area other than

address

R22

moving picture area

set

 

 

 

 

writing

still picture area

RM = 1

updating frame data

Note 3)

Index

R22

writing

moving picture area

Notes: 1. In RGB interface operation, RAM address AD16-0 is set in the address counter on the falling edge of VSYNCX.

2.Set AD16-0 bits and the index R22h before starting RAM access via RGB interface.

3.When switching to the system interface operation after writing data via RGB interface, wait at least one write cycle (tcycw).

6/25 00:00

Moving picture

area

6/25 00:00

Moving picture

area

Figure 46 Updating the Still Picture Area while Displaying Moving Picture

Rev. 0.11 April 25, 2008, page 125 of 181

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Renesas R61509V manual Moving Picture Display via RGB Interface, RAM access via system interface in RGB interface operation
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R61509V specifications

The Renesas R61509V is a versatile and advanced display controller designed to manage graphical user interfaces in various electronic devices. This controller is particularly popular among manufacturers of consumer electronics due to its rich feature set and efficient performance. The R61509V is known for its compatibility with a range of display technologies including LCD and OLED, making it a go-to choice for diverse applications in automotive, industrial, medical, and consumer sectors.

One of the standout features of the R61509V is its high-resolution support, allowing it to drive displays with resolutions up to 800x480 pixels. This capability ensures that users experience clear, vibrant visuals, enhancing the overall usability of devices. The controller supports 16-bit RGB output, enabling a broad color palette and ensuring that colors are rendered accurately and with richness.

The R61509V also incorporates advanced graphics capabilities, including a built-in graphics engine that supports various graphical elements. This engine allows for the overlay of graphics and images, creating smooth transitions and animations that enhance user interaction. Its ability to handle multiple layers makes it ideal for applications that require a complex user interface.

Additionally, the R61509V utilizes a serial peripheral interface (SPI) for communication, allowing for seamless integration with microcontrollers and processors. This feature simplifies the design process and reduces the overall system cost by minimizing the need for additional components. The controller is designed to operate with low power consumption, making it suitable for battery-powered devices where efficiency is critical.

In terms of software support, the R61509V is accompanied by a wide range of software development tools, including drivers and libraries that facilitate the development of applications. Its flexible programming architecture allows engineers to implement custom functionalities that enhance the user experience.

The R61509V is built on reliable, scalable technology, ensuring that it can adapt to various industry demands. With its combination of high-performance graphics, versatile display support, and low power usage, the Renesas R61509V is a compelling choice for manufacturers looking to create innovative and visually appealing products. Whether in automotive dashboards, medical devices, or user-centric consumer electronics, the R61509V enables captivating display solutions that meet modern technological requirements.
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