Hi Pals, does anyone know where i can find the application note 139 "In-system Flash Programming for 8051"???? I have searched the whole website http://www.keil.com but couldnt find it. waiting for an answer AAA
http://www.keil.com/support/docs/2364.htm http://www.keil.com/support/docs/2374.htm
Why reinvent the wheel. Use an ISP derivative such as the P89C51Rx2 or P89C66x which have flash write built in and come with free software to download with. Erik