Abstract: In order to reduce costs, simplify the hardware design about remote monitoring system and increase systems stability,based on AVR Atmega series of MCU(Micro Computer United) Flash code structure of the district, the reading and writing RWW(Read-While-Write) , non-reading and writing at the same time (NRWW:Not Read-While-Write), boot loader, the application areas are studied. The development of the download page guide treatment, examples program(the direction of the net topology map about the management system of students using electricity), and code conversion are improved. The main purpose of the research is reducing costs, simplifying the hardware design about remote monitoring system and increasing systems stability.The practice has proved that the applications of the resource codes long-range rewriting about the single-chip of AVR Atmega series, remove a series of the complex external circuit that can achieve remote upgrade in the past.

Key words: boot loader section, application section, boot loader self-programming, read-while-write, no read-while-write