What is the unique advantage of RZ/A1 MPU for helping smart society?

In the fiery download of the "Processor and DSP Special Issue" in December, the e-family network is missing.

With the development of information and communication technology (ICT), the semiconductor industry, and the rise of the Internet of Things, various products and systems used in daily life, such as household appliances, industrial equipment, building maintenance systems, power grids, automobiles, and transportation facilities They are all closely related to the network, and an "intelligent society" is taking shape. In this smart society, smartphones and tablets are rapidly becoming popular as interfaces between humans and smart societies, and the market demand for high-resolution displays and touch-screen interfaces for home appliances and industrial devices is growing rapidly.

However, performing such complex networking and HMI functions requires a high level of performance and functionality that is difficult to implement with MPU alone, so such applications typically employ traditional embedded MPUs that require external memory (DRAM). However, this method is still somewhat inadequate. For example, the operating frequency requirement of DRAM makes the system design complicated; the DRAM interface is frequently updated, and it is difficult to achieve long-term stable procurement, especially for industrial equipment; installation area and electromagnetic noise increase; equipment The complexity adds to the development burden of the software.

In line with the development of the global ARM ecosystem, creating a complex human-machine interface (HMI) for the future "smart society", the RZ/A1, the first high-end general-purpose MPU product based on the ARM core, was born in the Renesas Electronics industry. The product has 10 megabits of on-chip random access memory, no need for external memory (DRAM) to directly use wide-screen WXGA graphics display, powerful graphics processing, support for a variety of video input and output methods and a wealth of peripheral interfaces, through control and information The integration of technology to achieve a smart society.

Built-in Cortex-A9 core

Based on the current rich ARM ecosystem, RZ/A1 has built-in Cortex-A9 core, which can be easily developed using ARM development environment and development tools.

Built-in large memory

Due to the advancement of technology, the upgrade of DDR/SDRAM, the general-purpose medium-sized RAM is gradually discontinued, which has caused the vacancy of this range of RAM, which undoubtedly increases the procurement risk for products using external RAM. The RZ/A1 has a built-in memory of up to 10M. In general, there is no need to use external RAM, which avoids the problem of RAM purchase stability, reduces system cost and improves system performance. Among the current MPUs in the industry, RZ/A1 has the largest on-chip memory.

1) High-speed memory access

The Cortex-A9 core adds on-chip high-capacity memory for high-speed memory access. For example, when processing high-speed graphics data, the on-chip RAM supports large-bandwidth, low-latency communication, and data does not pass through the external bus, so there is no need to worry about the bus burden caused thereby. Figure 1 shows the RZ/A1 AXI-based bus architecture. The RZ/A1 supports parallel communication between multiple masters and slaves without affecting each other.

Figure 1 RZ/A1AXI bus architecture

2) Reduce overall power consumption and system cost

Eliminates the need for external RAM, saves external RAM modules, and reduces system cost without worrying about external RAM supply issues. In addition, the power consumption and noise are reduced in product design, while the complexity of the circuit design is reduced, the assembly area is reduced, and the product quality and performance are improved.

Advanced graphics processing

RZ/A1 supports high resolution (WXGA); supports 2D graphics acceleration, high-speed graphics processing, OpenVG1.1 support, rich and smooth graphical interface; video support analog input (CVBS, NTSC/PAL/SECAM), support Digital input (RGB/YCbCr). And, RZ/A1 video processing supports image adjustment, zoom, flip, and image rendering. Figure 2 and Figure 3 show an example of RZ/A1 image processing.

Figure 2 Image adjustment

Figure 3 image rendering

In addition, RZ/A1 has a CMOS camera interface, which can directly input CMOS camera signals, and the video output can be connected to the LCD touch screen.

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