7

Programming the AVR

The AVR on STK503 can be programmed in four different ways:

1.

In-System Programming (ISP)

2.

High-Voltage Parallel Programming (HVPP)

3.

JTAG Programming

4.

Self Programming

Self Programming in not described in this document. Please consult the specific

AVR's datasheet.

In-System Programming (ISP)

In order to ISP program an AVR, it must have the ISP programming enable

fuse set. This fuse can be set by High-Voltage Parallel Programming or JTAG

Programming.

Figure 4-1: ISP programming the AVR

To ISP program an AVR on STK503, do the following:

1.

Turn off power on STK500.

2.

Connect the 6-pin cable between the ISP6PIN connector on STK500 and

the ISP connector on STK503.

3.

Turn on power on STK500.

4.

Connect a serial cable to the RS232 CTRL connector on STK500 and

your PC.

5.

Start AVR Studio. On the Tools menu, select "Program AVR/ Connect..."

The device is now ready to be programmed. For more information on how to use

the programming dialog, see the Frontend software section in the STK500 user