R61509V

Target Spec

Serial Interface

The serial interface is selected by setting the IM2/1 pins to the IOVCC/GND levels, respectively. The data is transferred via chip select line (CS), serial transfer clock line (SCL), serial data input line (SDI), and serial data output line (SDO). In serial interface operation, the IM0_ID pin functions as the ID pin, and the DB17-0 pins, not used in this mode, must be fixed at either IOVCC or GND level.

The R61509V recognizes the start of data transfer on the falling edge of CSX input and starts transferring the start byte. It recognizes the end of data transfer on the rising edge of CSX input. The R61509V is selected when the 6-bit chip address in the start byte transferred from the transmission unit and the 6-bit device identification code assigned to the R61509V are compared and both 6-bit data match. Then, the R61509V starts taking in subsequent data. The least significant bit of the device identification code is determined by setting the ID pin. Send "01110” to the five upper bits of the device identification code. Two different chip addresses must be assigned to the R61509V because the seventh bit of the start byte is register select bit (RS). When RS = 0, index register write operation is executed. When RS = 1, either instruction write operation or RAM read/write operation is executed. The eighth bit of the start byte is R/W bit, which selects either read or write operation. The R61509V receives data when the R/W = 0, and transfers data when the R/W = 1.

When writing data to the GRAM via serial interface, the data is written to the GRAM after it is transferred in two bytes. The R61509V writes data to the GRAM in units of 18 bits by adding the same bits as the MSBs to the LSB of R and B dot data.

After receiving the start byte, the R61509V starts transferring or receiving data in units of bytes. The R61509V transfers data from the MSB. The R61509V’s instruction consists of 16 bits and it is executed inside the R61509V after it is transferred in two bytes (16 bits: DB15-0) from the MSB. The R61509V expands RAM write data into 18 bits when writing them to the internal GRAM. The first byte received by the R61509V following the start byte is recognized as the upper eight bits of instruction and the second byte is recognized as the lower 8 bits of instruction.

When reading data from the GRAM, valid data is not transferred to the data bus until first five bytes of data are read from the GRAM following the start byte. The R61509V sends valid data to the data bus when it reads the sixth and subsequent byte data.

Table 58 Start Byte Format

 

Transferred Bits

S

1

2

3

4

5

6

7

8

Start byte format

Transfer start

Device ID code

 

 

 

RS

R/W

 

 

 

0

1

1

1

0

ID

 

 

 

 

 

Note:

The ID bit is determined by setting the IM0_ID pin.

 

 

 

 

 

 

Table 59 Functions of RS, R/W Bits

RS

R/W

Function

0

0

Set index register

0

1

Setting inhibited

 

 

 

1

0

Write instruction or RAM data

1

1

Read instruction or RAM data

 

 

 

Rev. 0.11 April 25, 2008, page 109 of 181

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Renesas R61509V manual Serial Interface, Start Byte Format, Functions of RS, R/W Bits
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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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