• User bootloader for at89c51rc2
    hi everyone, we are using at89c51rc2.Till now we were programming the flash using flip through serial port.Now i need to make user bootloader.Data sheet says that there will be an application program...
  • On-Chip XRAM Usage Problem
    Hello, We have an application running on DS89C450. We link the compiled objects by means of LX51 advanced linker and 'Linker Code Packing' of the linker is enabled with the optimization level of...
  • on-chip xram
    hello everyone, i am quite new to programming 8051..hoping to receive some help.. i have a pointer variable.The address stored in this variable resides in the on-chip XRAM. unsigned char xdata...
  • XRAM specification
    Hello, 1) I am using a Large model for my application. The XRAM area is from 0 to FFFF. Out of this 0-7FFF is used for normal XRAM operations 8000 – F7FF is used Battery backup ram operations for...
  • USERSTACK in XRAM
    I've put the USERSTACK in XRAM (C161 internal ram, 0xE000 to 0xE800) (cf AN Keil APNT_124 + U3 directive). The project work well and execution speed is improved (local variables in XRAM!). But, there...