AT89C5131A-M(2005) View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT89C5131A-M
(Rev.:2005)

8-bit Flash Microcontroller with Full Speed USB Device

Atmel Corporation 

Extra Row

AT89C5130A/31A-M

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

Figure 16:

• 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.

Figure 16. Flash and Extra Row Programming Procedure

Flash Spaces

Programming

Column Latches Loading

see Figure 15

Disable IT

EA = 0

Launch Programming

FCON = 5xh

FCON = Axh

FBusy

Cleared?

Erase Mode

FCON = 00h

End Programming

Enable IT

EA = 1

33

4337C–USB–02/05

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