How can I burn hex code to p89v51rd2 without a usb to rs232 serial cable?

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SUMMARY

The discussion centers on burning hex code to the NXP P89V51RD2 microcontroller using a laptop (Acer Aspire 746) running Windows 7, without a USB to RS232 serial cable. The user employs a combination of DB9 male and female connectors to create a makeshift connection, utilizing the Keil compiler and Flash Magic programming software with a baud rate of 9600 on COM port 1. However, community feedback indicates that using multiple connectors may lead to unreliable results, suggesting that a direct USB to RS232 converter is preferable for successful programming.

PREREQUISITES
  • Understanding of serial communication protocols
  • Familiarity with the NXP P89V51RD2 microcontroller
  • Knowledge of using Flash Magic programming software
  • Experience with DB9 connectors and wiring
NEXT STEPS
  • Research how to set up a reliable USB to RS232 serial connection
  • Learn about the configuration settings in Flash Magic for the P89V51RD2
  • Explore troubleshooting techniques for serial communication issues
  • Investigate alternative programming methods for microcontrollers without USB interfaces
USEFUL FOR

Electronics hobbyists, embedded systems developers, and anyone involved in programming microcontrollers, particularly those working with the NXP P89V51RD2 and serial communication setups.

vead
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hello ,
I want to burn hex code from Laptop to p89v51rd2. but I don't have usb to rs232 serial cable

laptop -aspire746
os- window 7
serial port
microcontroller nxp89v51rd2
compiler - keil
programer software - flesh magic
com port 1
baud rate 9600
interface - none ISP
max RS232IC

usb to rs232 serial cable is not available in my place so I used two cable to burn hex code I have driver cd
programmer circuit +Db9 male connector +db9female connector------cable-----db9 female+db9male--able --- usb port to laptop port

Q1 it will work or tell me way how to burn hex code ?
 

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