Rainbow-electronics AT89C5132 Manuel d'utilisateur télécharger pdf (Page 21)

AT8xC5132

4173A–8051–08/02

Figure 14. Hardware Boot Process Algorithm

The software process (bootloader) is detailed in the section “In-System and In-Applica-

tion Programming”.

Preventing Flash Corruption See “Reset Recommendation to Prevent Flash Corruption” on page 46 in the section

“Power Management”.

Atmel’s

Boot Loader

HardwareSoftware

Hard Cond?

ISP

= L?

RESET

Hard Cond Init

ENBOOT = 1

PC = F000h

FCON = 00h

Prog Cond?

BLJB = P?

Standard Init

ENBOOT = 0

PC = 0000h

FCON = F0h

Prog Cond Init

ENBOOT = 1

PC = F000h

FCON = F0h

User’s

Application

Process Process

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Rainbow-electronics AT89C5132 Manuel d'utilisateur Page 21