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One runs at 3.3V and 8 MHz, the other at 5V and 16 MHz.
You can also order after learning a little about it . Happy to wait :-)Microcontroller ATmega328 * |
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Board Power Supply 3.35 -12 V (3.3V model) or 5 - 12 V (5V model) |
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Circuit Operating Voltage 3.3V or 5V (depending on model) |
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Digital I/O Pins 14 |
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PWM Pins 6 |
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UART 1 |
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SPI 1 |
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I2C 1 |
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Analog Input Pins 6 |
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External Interrupts 2 |
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DC Current per I/O Pin 40 mA |
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Flash Memory 32KB of which 2 KB used by bootloader * |
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SRAM 2 KB * |
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EEPROM 1 KB * |
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Clock Speed 8 MHz (3.3V versions) or 16 MHz (5V versions)(*) Older boards were equipped with ATmega 168 with this specs: |
- Flash memory: | 16 KB |
- SRAM: | 1 KB |
- EEPROM: | 512 bytes |