Atmel ATAVRBFLY Scheda Tecnica
-18
AVR Butterfly User Guide
4271C–AVR–04/05
Figure 3-6. PORTB and PORTD
See the Schematic and the Assembly Drawing in the 7 Complete Schematics for further
details.
details.
The device can now be programmed using the High-voltage Programming mode in AVR
Studio STK500 software.
Studio STK500 software.
During programming there will be some noise from the piezo element, and some flicker-
ing on the LCD, this because PORTB and PORTD are connected to theses modules.
ing on the LCD, this because PORTB and PORTD are connected to theses modules.
Figure 3-7 shows the pinout for the I/O port headers PORT B and PORT D.
Figure 3-7. PORT B and PORT D
Note:
When the AVR Butterfly is configured in High-voltage Parallel Programming
mode, the JTAG interface will not work, neither will the external crystal, causing
the pre-programmed application that comes with the AVR Butterfly to not oper-
ate correctly.
mode, the JTAG interface will not work, neither will the external crystal, causing
the pre-programmed application that comes with the AVR Butterfly to not oper-
ate correctly.
VCC_EXT
PD6
PD7
PD0
PD1
PD2
PD3
PD4
PD5
GND
PORTD
1 2
VCC_EXT
PB6
PB7
PB0
PB1
PB2
PB3
PB4
PB5
GND
PORTB
1 2