First hand evaluation of Reza electronics rz/g2l development board

5 month 18 Japan , Feiling embedded released based on Renesas Electronics RZ/G2L Processor development FET-G2LD-C The core board and OK-G2LD-C Development board .RZ/G2L The processor has rich peripheral interfaces , It has high performance and low power consumption . Because this processor has a short time to market , There are many engineers who don't know enough about it , There are many questions , In order to answer the questions that we have received a lot of feedback , Today's series is dedicated to FET-G2LD-C The core board and OK-G2LD-C The development board has been evaluated ~
One 、FET-G2LD-C Core board experience

First introduce the basic configuration of the core board ：

CPU：RZ/G2L

Dual core Arm Cortex-A55 @ 1.2GHz

Single core Arm Cortex-M33 @ 200MHz

GPU：Arm MaliTM-G31 @ 500MHz

Memory ：DDR4-1600（ The current version is 2GB size ）

Storage ：eMMC（16GB）+QSPI Flash（16MB）

Power Supply ： Integrated power chip

Connection with the base plate ： Ultra thin connector

FET-G2LD-C The core board is based on Renesas high performance 、 Ultra efficient processor RZ/G2L Design and development , It adopts multi-core isomerism , carrying Cortex-A55 kernel , The operating frequency is as high as 1.2GHz; And integrate Cortex-M33 MCU kernel , The main frequency is 200MHz. FET-G2LD-C The core board is equipped with 500MHz GPU Mali-G31 And various display interfaces , Rich functional interface resources , Multi channel support UART、Ethernet、CAN-FD etc. , For Industry 、 Medical care 、 Electric power 、 Transportation and other industries and various pan industrial application scenarios .

FET-G2LD-C Core board correction 、 Reverse physical drawing

FET-G2LD-C Core board correction 、 Dimension drawing on the back

Thanks to the integrated power supply scheme , The size of the whole core board can be controlled very small , have only 60mm x 38mm. Under the blessing of board to board ultra-thin connector , The highest part from the core plate to the bottom plate （ inductance ） It is only 5.6mm. It is suitable for application scenarios with strict space requirements . The core plate adopts the process of gold precipitation and resin plug hole , Greatly improve the reliability and stability of welding . And adopt lead-free technology , Meet environmental protection requirements . meanwhile , The signal integrity and power integrity are strictly controlled , By simulation , Provide a theoretical basis for the stable operation of the system ; Core board 4 A fixed hole is reserved at each corner , To cope with high-intensity vibration scenes ; In addition, it also has a more humanized fool proof design .

Two 、RZ/G2L Core board stability test

1. Power stability test ：

In order to test the stability of the power supply , Feiling general RZ/G2L Adjust the core board to full load , Capture the waveform of each test point through the oscilloscope ：

Core board TP1 wave form

Core board TP2 wave form

Core board TP3 wave form

Core board TP4 wave form

Core board TP5 wave form

Core board TP6 wave form

Core board TP7 wave form

Core board TP9 wave form

Core board TP10 wave form

Core board TP11 wave form

3、 ... and 、 Memory pressure test ：

FET-G2LD-C The results of the core board memory pressure test are shown in the figure below .

Memory stress test results

It can be seen that in the full load pressure test FET-G2LD-C The core board performs well .

Four 、RZ/G2L First experience of development board

Feiling embedded RZ / G2L The floor layout of the core board supporting the development board is compact , Dimensions only 150mm x 130mm. But the interface is very rich , There are two Gigabit ports 、 double USB2.0、USB OTG、TF、 dual CAN-FD、RS485、MIPI-CSI、MIPI-DSI、 Audio headphone output 、 Audio horn output 、 Audio MIC Input 、ADC Such as the interface , On board WIFI&BT modular , reserve MIPI PCIe Of 4G Module slot .

The peripheral interface has corresponding protection circuit , Each interface is arranged close to the board , It is convenient for users to make their own shell or place it on the chassis .

Bottom plate dimension drawing

1、 Development board power consumption test

A lot of friends are right FET-G2LD-C The core board and OK-G2LD-C The power consumption of the development board is more concerned , Therefore, the editor aims at RZ/G2L A series of complete development boards and separate core boards have carried out preliminary power consumption tests , The test results are shown in the following figure ：

The core board is under full load , Power consumption is only 1.8w. Thanks to such low power consumption ,FET-G2LD-C The core board can be fan free 、 Design without heat sink （ notes ： The core board is in an environment with good air flow , If it is a closed environment, it needs to be evaluated on a case by case basis ）.

2、 Development board Startup Test

OK-G2LD-C Development board support TF Card burning , Support SCIF and Flash start-up （ Temporary does not support eMMC start-up ）, The silk screen beside the bottom plate dialing is the dialing position in different states , You can dial the code directly according to the silk screen . As shown in the figure below, the dial switch is Flash start-up ：

Due to limited space , This evaluation only starts from several dimensions where you ask more questions , The follow-up series will bring you more and more detailed evaluation content , Please look forward ！