To program the AVR using high-voltage (parallel) programming, connect the PROG_CTRL of the Atmel
STK500 to PRG_CTRL of the Atmel STK521 and PROG_DATA of STK500 to PRG_DATA of STK521
as shown in
The STK500 and STK521 jumpers & switches must must be configured as follows :
Table 2-2. High-Voltage programming jumper settings for the Atmel AT90PWM81.
Table 2-3. High-voltage programming switches settings for AT90PWM81.
The device can now be programmed using the high-voltage programming mode in the Atmel AVR Studio
STK500 software.
Note:
2.4
Atmel AVR JTAGICE mkII Connector
See the following document :
"JTAGICE mkII Quick Start Guide" which purpose is "Connecting to a target board with the AVR
JTAGICE mkII".
This note explains which signals are required for ISP and which signals are required for debugWIRE.
Figure 2-5
STK521 User Guide
Figure
2-4. Make sure that the CLOCK switch is placed in the STK500 position.
See the Atmel STK500 User Guide for information on how to use the STK500 front-end software
in high-voltage programming mode.
For the high-voltage programming mode to function correctly, the target voltage must be higher
than 4.5V.
shows how to connect the Atmel AVR JTAGICE mkII probe on the STK521 board.
STK500
VTARGET
Mounted
AREF
Open
RESET
Mounted
XTAL1
Mounted
OSCSEL
Mounted, pin 1 and 2
BSEL2
Mounted
PJUMP
Open
STK521
POWER
VTG
CLOCK
STK500
RESET
RST/
2-7
8194B–AVR–01/12
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