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