MCBX51: DOWNLOADING ATMEL 89C51RD2 DEVICES
Information in this knowledgebase article applies to:
The AT89C51RD2 (or T89C51RD2) devices will not connect to the download program using the Atmel FLIP/BatchISP programs.
The device has been programmed previously. Programming these devices automatically disables the ISP functionality.
Use the following steps to download your device with Atmel's FLIP utility:
If the above sequence does not work, the bootloader code in flash was overwritten. To restore your device so you can program it, using a parallel device programmer:
Request the files attached to this knowledgebase article.
Last Reviewed: Thursday, October 30, 2008
of your data.