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Some ISP Flash microcontroller embed the bootloader on_chip,and ROM/FLASH can be erase&reprogram from 0x0000h to 0xffffh.But C8051F020's bootloader occupy space in the 64K flash,How bootloader call the application? Where can i find some sample code for C8051F020 including bootloader and application? Thanks for help?
C8051F020, I believe (why do you keep it a secret) is a Cygnal chip. The Cygnal ISP is JTAG which does not involve the processor at all - it is straight write flash hardware. There is absolutely no concensus between manufacturers re ISP/IAP, for instance the Philips 89C51RD2 program differently from the Atmel 89C51RD2. For other chips that actually use the processor to write the flash have a look at http://www.esacademy.com that have everything from code snippets to full programs for the Philips ISP chips. Much of what you will fin there re IAP will give you hints that is uaseable with any manyfactureres chip. Alao I believe that Cygnal has some IAP appnotes, but when I use Cygnal, I just include a $0.08 JTAG connector. Erik Erik