Parallel High Voltage Programming

To use High-Voltage programming the programming signal must be routed to the AVR I/O pins. The two 10-wire cables supplied with the STK500 can be used to connect the PROG DATA header to the PORTB header and connecting the PROG CTRL header to the PORTD header as shown below.

Some of the jumper settings on STK500 must be changed when using High-Voltage programming. The next figure explains these jumper settings.

HW setup for Parallel High-Voltage programming:

1. Switch power off
2. Place the device to program in its socket according to table in the "High Voltage Programming" section.
3. Connect the headers PROGDATA and PORTB with the 10-wire cable
4. Connect the headers PROGCTRL and PORTD with the 10-wire cable
5. Mount jumper OSCSEL on pin 1 and 2 to select SW controlled clock
6. Mount jumper XTAL1 to route the oscillator signal to the device
7. Mount jumpers VTARGET and RESET
8. When programming AT90S2333 or AT90S4433, mount both PJUMP jumpers. The 2-wire cables can be used instead of jumpers
9. When programming ATmega32, ATmega163 or ATmega161 mount the BSEL2 jumper. A 2-wire cable can be used instead of jumpers.
10. Disconnect target system
11. Switch power on

For complete description of jumper settings, see section "Jumper settings".

Note: Remove the HW setup for High-Voltage programming before starting a debug session.

See Also

• STK500 Starter Kit User's Guide
• Description of User_LEDs
• Description of User Switches
• Connection of LEDs and Switches
• Port Connectors
• Description of User RS232 Interface
• Description of Dataflash Pins
• Target Socket Section
• ISP Programming
• High Voltage Programming
• Serial High Voltage Programming
• Jumper Settings
• Target VCC Settings, TVCC
• Analog Reference Voltage, AREF
• Reset Settings, RESET
• Clock Settings, XTAL1 and OSCSEL
• BSEL2 Jumper
• Expansion Connectors
• Prog Ctrl and Prog Data Headers
• Misc