MIKROE-648 mikroElektronika, MIKROE-648 Datasheet - Page 10

• Manufacturer Part Number: MIKROE-648
• Description: Development Boards & Kits - ARM EASYARM V6 DEVELOPMENT SYSTEM
• Manufacturer: mikroElektronika

Specifications of MIKROE-648

• Rohs: yes
• Product: Development Kits
• Tool Is For Evaluation Of: LPC2148, LPC2214
• Core: ARM7TDMI-S
• Interface Type: RS-232, SPI, UART, USB
• Operating Supply Voltage: 5 V, 9 V to 32 V
• Data Bus Width: 32 bit
• Description/function: Development Board Only, Touch Screen, Pencil, DS1820, LCD, Serial Cable, GLCD not included
• Dimensions: 265 mm x 220 mm
• Processor Series: LPC2xxx
• For Use With: LPC2148, LPC2214

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EasyARM v6
5. Piezo buzzer
Due to a built-in piezo buzzer, the EasyARM v6 development system is capable of emitting audio signals. In order
to enable the piezo buzzer to operate properly it is necessary to generate a voltage signal of specific frequency.
Remember, when writing the code for voltage signal generation, that the piezo buzzer’s resonant frequency is 3.8kHz.
Other frequencies in the range between 20Hz and 20kHz can also be used, but the best performance is provided with
frequencies ranging between 2kHz and 4kHz. To establish connection between the piezo buzzer and the microcontroller,
it is necessary to set switch 6 on the DIP switch SW1 to the ON position.
Figure 5-1: Piezo buzzer
Figure 5-2: Piezo buzzer connection schematic
MikroElektronika