AT89C5131A View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT89C5131A

USB Microcontrollers

Atmel Corporation 

Figure 3. High-pin Count Regular Boot Process

RESET

ENBOOT = 0

PC = 0000h

H a rd w a re

C o n d itio n

No

Yes

BLJB = 1

No

Bit E NB OOT in A UXR1 Register is

Initialized with BLJB inverted

ENBOOT = 1

PC = F400h

Yes

FCON = 00h

ENBOOT = 1

PC = F400h

FCON = 0Fh

Yes

FCON = 00h

No

No

SBV < 7Fh

Yes

Start Application

Start User Bootloader

Start Bootloader

8 AT89C5131A USB Bootloader

4287E–USB–04/08

Share Link: