Hardware Description
3-4
AVR STK500 User Guide
1925C–AVR–3/03
Figure 3-6.
Pinout of PORTE Header
The special functions of this port are:
n
PE0 - PE2:
n
REF:
Analog reference voltage. This pin is connected to the AREF pin on devices
having a separate analog reference pin.
n
XT1:
XTAL 1 pin. The internal main clock signal to all sockets. If the XTAL1 jumper is
disconnected, this pin can be used as external clock signal.
n
XT2:
XTAL 2 pin. If the XTAL1 jumper is disconnected, this pin can be used for
external crystal with the XT1 pin.
The headers for the LEDs and switches use the same pinout as the I/O port headers.
The pinout of the switch header is explained in Figure 3-7 and the pinout for the LED
header is explained in Figure 3-8. The square marking indicates pin 1.
Figure 3-7.
Pinout of the Switch Header
Figure 3-8.
Pinout of the LED Header
Table 3-1.
PORTE Connection
ATmega161
AT90S4414/AT90S8515
PE0
PE0/ICP/INT2
ICP
PE1
PE1/ALE
ALE
PE2
PE2/OC1B
OC1B
PE1
RST
GND
XT2
VTG
PE0
PE2
REF
XT1
GND
1 2
PORTE/AUX
SW1
SW3
SW5
SW7
VTG
SW0
SW2
SW4
SW6
GND
1 2
SWITCHES
LED1
LED3
LED5
LED7
VTG
LED0
LED2
LED4
LED6
GND
1 2
LEDS
Содержание AVR STK500
Страница 1: ...STK500 User Guide ...
Страница 2: ......
Страница 38: ...Hardware Description 3 28 AVR STK500 User Guide 1925C AVR 3 03 ...
Страница 40: ...Installing AVR Studio 4 2 AVR STK500 User Guide 1925C AVR 3 03 ...
Страница 52: ...In System Programming of an External Target System 6 2 AVR STK500 User Guide 1925C AVR 3 03 ...
Страница 56: ...Technical Support 8 2 AVR STK500 User Guide 1925C AVR 3 03 ...
Страница 60: ...Appendix A 10 2 AVR STK500 User Guide 1925C AVR 3 03 ...