Questions tagged [renesas]
Anything related to Renesas components or technology. Renesas are a major manufacturer of micro-controllers and flash memory parts, as well as analogue and mixed signal components.
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What is the purpose of this circuit that is part of a Renesas RX231 programming interface?
I traced a IO-Link USB master PCB to understand how it works. The ciruit I found makes sense to me except for a part of the programming interface. It's marked red in the following schematic. (TXDA is ...
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Why is the time lagging behind on the Renesas ISL1208 real time clock (RTC) in battery mode?
For a project I am using the ST M41T81 RTC but because of the parts shortage, I updated the firmware to support both the M41T81 and LS1208 RTC chips. The reason I am using the LS1208 is because the ...
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Confusion about USA export restriction regarding electronics
I am an electronic hobbyist based in Canada. Recently I bought different Microcontroller development boards from Mouser.ca This is mostly to satisfy my curiosity and to try out the different features ...
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How to generate .ruc file?
I am using RA2A1 MCU for my product and want to use UNIQUE ID code for security purpose and restrict the debugging without ID code.
While flashing from Renesas Flash Programmer (RFP-3.09.01) we ...
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Minimal Connections to Program Renesas RE01
I'm trying to program a R7F0E01182DNG#AA0 MCU, using the serial programming feature. It's not working, so as part of troubleshooting I'm paring my design down to the minimum functional circuit. This ...
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Adjusting Shunt Resistor Value
I am designing a DC-DC Buck converter using the ISL81806
I would like to use a sub-milliohm current sense resistor (0.2 milliohm) to set the current limit although it seems that the feedback voltage ...
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Is eXecute In Place dependent on the flash chip?
We are looking at implementing an architecture that makes use of eXecute In Place (XIP) over QSPI in order to overcome storage constraints; our firmware has grown too large to live in the on-chip ...
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UART - Logic Analyser
So I've been working on getting UART access to the head unit in my car; I've got the schematics of the unit and found that TX3/RX3 on the Renesas SH7750 are presented externally - along with 3 "...
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Using a Renesas evaluation board as a Programmer
I am new to using renesas microcontrollers, and could use some advice from someone with experience using them. I found this rl78 evaluation board and a quick reading of the product description on the ...
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RX63N has NAND or NOR internal flash?
I need to read the internal flash of RX63N MicroController multiple times. It will always be the same data block. I was concerned about the life of the internal flash, wearing out etc. I read that NOR ...
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e2 studio undefined reference to 'posix_memalign'
I need some help to solve this error. I am new to use e2 studio of Renesas. I started to import and build a project, which used for GR-Peach board. Then I got this error:
My toolchain version is 8.3....
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Relating RAM usage with stack allocation and random resets in a microcontroller
This might appear to be too much data way too scattered to understand, but I'll make a genuine effort to explain.
Controller: R5F111MJ (ROM 256KB, RAM 16KB), RL-78/L1C family. Datasheet can be found ...
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Can you speed up debugging in Renesas High Performance Embedded Workshop by not flashing after breakpoint
I am debugging an H8S MCU in Renesas High Performance Embedded Workshop 4 with the attached E10A emulator, and find it's very slow when stepping through code because it keeps reflashing the chip ...
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Renesas Compiler: KPIT vs GCC-Renesas (CyberThor)
When looking around at Renesas (RL78) compilers, I noticed GCC mentioned a decent amount, but the links are different. Many of the older (<= 2015) URLs point to an India company, KPIT, and is ...
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How to handle moving time window event in an embedded software
Edit3: As requested I'm going to be more specific about my issue, previous description is still below
A motor must not be activate more than MAX_TIME hours (20hours - consecutive or not) during a ...
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Handling RFID time response functions in C
I'm developing an embedded app, writen in C, using a M16C/28 uC from Renesas.
The app manages two simple task:
RFID for detection and reading MIFARE tags. ( Using HW: Mf500 from NXP ). The uC ...
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8GB SD cards intermittently overwriting data
I have inherited a custom embedded device which uses an Renesas H8S MCU to store data on an SD card. It does this directly with no filesystem implementing SPI at a low level in firmware written in ...
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How to measure CAN_H / CAN_L of a CAN Communication using an oscilloscope?
I'm trying to set a CAN Communication between an MCU (Inside Renesas board that have a CAN interface inside) and CAN Transceiver (Vector CANcase) which is connected to my laptop via USB.
I want to ...
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Renesas CS+ for CC vs for CA, CX vs e2 studio
I just get started with renesas MCU: RL78 - D1A – R5F10DPJJFB. I went to Renesas website and saw different IDEs: CS+ for CC, CS+ for CA, CX, e2 studio so I would like to ask what is the differences ...
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What are the advantages of working with the Renesas M16C microcontroller? [closed]
I know it's the industry standard but what would it add to my simple project? Would it be ok to work with an Arduino for instance?
What are the superior features? I went to their official website and ...
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Detecting a disconnected analog input
I am working with ADC on MCU SH7147 (Renesas).
I have a problem with a sensor as outlined below. How do I detect a disconnect of the sensor cable on the analog input pin on the MCU?
I tried to ...
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Will Renesas V850ES/Jx3-E support 1 wire protocol (max detect temp/humid sensor)?
I would like to connect the DATA pin of sensor to Digital I/O pin of a microcontroller. I am confused that in the data sheet of the sensor they have mentioned this:
MaxDetect 1-wire bus is used for ...
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Renesas RL78 SPI Baudrate Change
I am using an Renesas RL78 and SPI to communicated with an SD card. I have the driver working using the single command Baudrate of 400kBaud when sending both commands and data.
Of course, this is ...
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