AT89C5131-PLTIL ATMEL Corporation, AT89C5131-PLTIL Datasheet - Page 31

Manufacturer Part Number

AT89C5131-PLTIL

Description

8-bit Flash Microcontroller with Full Speed USB Device

Manufacturer

ATMEL Corporation

Datasheet

1.AT89C5131-PLTIL.pdf (176 pages)

Extra Row

4136B–USB–09/03

The following procedure is used to program the Extra Row space and is summarized in

Figure 16:

•

Figure 16. Flash and Extra Row Programming Procedure

Load data in the column latches from address FF80h to FFFFh.

Disable the interrupts.

Launch the programming by writing the data sequence 52h followed by A2h in

FCON register.

The end of the programming indicated by the FBUSY flag cleared.

Enable the interrupts.

Column Latches Loading

Launch Programming

End Programming

Programming

Flash Spaces

see Figure 15

FCON = Axh

FCON = 5xh

Erase Mode

FCON = 00h

Cleared?

Disable IT

Enable IT

FBusy

EA = 0

EA = 1

AT89C5131