ATSC018-SU-CM ATMEL [ATMEL Corporation], ATSC018-SU-CM Datasheet - Page 11

• Manufacturer Part Number: ATSC018-SU-CM
• Description: AT90USB1287 (AVR) 64 QFN device (2.7V < VCC < 5.5V)
• Manufacturer: ATMEL [ATMEL Corporation]

3.6
3.6.1
3.6.2
On-board Resources
Description of LED Bank
Buzzer
The AT88Microbase includes 3 general purpose red LEDs, which are connected to PD6, PD5 and
PD4. To light an LED, the corresponding port pin must be driven high. To turn off an LED, the
corresponding port pin must be driven low.
Figure 8.
Note:
The small onboard buzzer adds audio capability to the AT88Microbase board. The buzzer requires
that PD7 be driven with a square wave at
AVR can source or sink enough current to drive an LED directly.
LEDs Implementation Schematic
TWI Position
K1
4.0 0.5

KHz to achieve a maximum decibel of 78dB.
TWI
SPI
SPI Position
K1
TWI
SPI