ATSTK526 Atmel, ATSTK526 Datasheet - Page 16

• Manufacturer Part Number: ATSTK526
• Description: KIT STARTER FOR AT90USB82/162
• Manufacturer: Atmel
• Series: AVR®r
• Type: MCUr

Specifications of ATSTK526

• Contents: Starter Kit Board, Power Supply, Cable and Software
• Processor To Be Evaluated: AT90USB82/162
• Data Bus Width: 8 bit
• Interface Type: RS-232, USB
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Silicon Core Number: AT90USB82, AT90USB162
• Kit Contents: Board Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT90USB162, AT90USB82
• For Use With: ATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.6
2.6.1
2.6.2
STK526 rev. B Hardware User Guide
On-board Resources
Joystick
LEDs
The 4+1 ways joystick is convenient for developing input device (USB) application: it
can easily emulate mouse movements, keyboard inputs, etc.
Closing a switch causes the corresponding signal to be pulled low, while releasing (not
pressed) causes an H.Z state on the signal. The user must enable internal pull-ups on
the input pins, removing the need for an external pull-up resistors on the switch.
Figure 2-15 . Joystick Schematic
Figure 2-16 . Joystick Implementation
The STK526 includes 4 green LEDs implemented on one line. They are connected to
the low nibble of “Port D” of AT90USB82/162 (PORTD[3..0]).
To turn ON one LED, the corresponding port pin must drive a high level. To turn OFF
one LED, the corresponding port pin must drive a low level. It is the opposite method
used in STK500.
Figure 2-17 . STK526 LEDs
1
1
1
2
2
2
SW3
SW3
SW3
TPA511G
TPA511G
TPA511G
Com1
Com1
Com1
Com2
Com2
Com2
Select
Select
Select
Down
Down
Down
Right
Right
Right
Lef t
Lef t
Lef t
Up
Up
Up
5
5
5
7
7
7
3
3
3
6
6
6
4
4
4
PB0
P
PB4
PB5
PB6
PB7
PB[7..0]
PB[7..0]
PB[7..0]
Using the STK526
7709B–AVR–07/08
2-15