Rainbow-electronics AT89C5132 Manuel d'utilisateur télécharger pdf (Page 7)

7

AT89C5132

4256A–USB–06/03

Figure 2. Boot Process Algorithm

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

Hard Init?

FCON = 00h?

User Boot?

SBV < F0h?

User’s

Bootloader

Atmel’s

Bootloader

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