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High voltage programming the attiny26 – Atmel STK500 User Manual

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Figure 2-3: High voltage programming of the ATtiny24

Table 2-1: High-Voltage programming jumper settings for ATtiny24

STK500
VTARGET Mounted
AREF Optional
RESET Mounted
XTAL1 Mounted
OSCSEL

Mounted, pin 1
and 2

BSEL2 Mounted
PJUMP Open
STK505
RESET Switch RESET position
XTAL Switch

EXT CLK
position

High Voltage Programming the ATtiny26

To program the ATtiny26 mounted on STK505 using High-Voltage Programming,
follow these steps:

1. Turn off the STK500 power switch.

2. Disconnect from STK500 and STK505 any hardware that does not tolerate

5V.

3. Connect PROGCTRL on stk500 to PROGCTRL on STK505, as shown on

figure 2-4.

4. Connect PROGDATA on stk500 to PROGDATA on STK505, as shown on

figure 2-4.

5. Set jumpers and switches according to table 2-2.

6. Turn on STK500 power.

7. Start the Programming Dialog in AVR Studio