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ATMEGA328P is high performance, low power controller from Microchip. ATMEGA328P is an 8-bit microcontroller based on AVR RISC architecture. It is the most popular of all AVR controllers as it is used in ARDUINO boards.
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ATMEGA328P – Simplified Features |
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CPU |
8-bit AVR |
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Number of Pins |
28 |
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Operating Voltage (V) |
+1.8 V TO +5.5V |
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Number of programmable I/O lines |
23 |
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Communication Interface |
Master/Slave SPI Serial Interface(17,18,19 PINS) [Can be used for programming this controller] Programmable Serial USART(2,3 PINS) [Can be used for programming this controller] Two-wire Serial Interface(27,28 PINS)[Can be used to connect peripheral devices like Servos, sensors and memory devices] |
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JTAG Interface |
Not available |
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ADC Module |
6channels, 10-bit resolution ADC |
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Timer Module |
Two 8-bit counters with Separate Prescaler and compare mode, One 16-bit counter with Separate Prescaler,compare mode and capture mode. |
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Analog Comparators |
1(12,13 PINS) |
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DAC Module |
Nil |
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PWM channels |
6 |
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External Oscillator |
0-4MHz @ 1.8V to 5.5V 0-10MHz @ 2.7V to 5.5V 0-20MHz @ 4.5V to 5.5V |
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Internal Oscillator |
8MHz Calibrated Internal Oscillator |
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Program Memory Type |
Flash |
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Program Memory or Flash memory |
32Kbytes[10000 write/erase cycles] |
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CPU Speed |
1MIPS for 1MHz |
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RAM |
2Kbytes Internal SRAM |
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EEPROM |
1Kbytes EEPROM |
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Watchdog Timer |
Programmable Watchdog Timer with Separate On-chipOscillator |
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Program Lock |
Yes |
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Power Save Modes |
Six Modes[Idle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended Standby] |
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Operating Temperature |
-40°C to +105°C(+105 being absolute maximum, -40 being absolute minimum) |
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