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Microcontroller Programming Guide

This document provides instructions for connecting to microcontrollers and programming them using examples. It discusses reading and writing to the DATAFLASH area without erasing the entire chip for the V850ES module V3.4. It also addresses frequently asked questions about errors in programming and their causes, such as ensuring the correct power supply, oscillator value, and logic levels on pins like TXD, RXD, RESET, and FLMD0.

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Victor Ramalho
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835 views6 pages

Microcontroller Programming Guide

This document provides instructions for connecting to microcontrollers and programming them using examples. It discusses reading and writing to the DATAFLASH area without erasing the entire chip for the V850ES module V3.4. It also addresses frequently asked questions about errors in programming and their causes, such as ensuring the correct power supply, oscillator value, and logic levels on pins like TXD, RXD, RESET, and FLMD0.

Uploaded by

Victor Ramalho
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Orange-5 & NEC V850 seriesV3.

4
http://www.cnc-lab.com

http://pavel-pervomaysk.com

Connecting to the programming of microcontrollers


using the examples presented in this document.
Read/Write DATAFLASH AREA without erasing all
chip added in module V850ES.hpx V3.4.
1) Check the power supply (3.25 or 5.0 volts) and select right
2) Check oscillator value ! Default value 4.000 MHz (4000)
3) Check the logic levels of the pins TXD, RXD, RESET, FLMD0
4) In some devices you should lift programming pins from PCB
Added new chips.

FAQ:
1) Why always I see the error : MCU not answer?
Look at the page 1, after read more.
This is because the CPU does not respond.
For responding MCU in boot you should provide this modes.
Power supply, range 3.25 or 5.0 volts.
Logic levels on all boot pins.
There are four pins:
FLMD0 Logic 1; RESET Logic 1; RXD Logic 1; TXD Logic 1;
Often interference on TXD, RXD pins provided by LIN, k-line controller
On RESET pin often disturb logic level MCU RESET supervisor.
Logic 1 for 3.25 volts VCC = 3.25V
Logic 1 for 5.0 volts VCC = 5.0V
Logic 0 for both modes = 0 V, Gnd
Please use oscilloscope for checking logic levels on Boot pins.
Best regards by pavel-pervomaysk.

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