The ATMEGA640-16AU is part of the ATmega family of microcontrollers, which is manufactured by Microchip Technology (previously Atmel). The ATmega640 is a 8-bit microcontroller based on the AVR architecture, and the "16AU" part of the model indicates the microcontroller’s speed (16 MHz) and package type (TQFP package with 100 pins).
1. Package and Pin Function Specifications
The ATMEGA640-16AU microcontroller comes in a TQFP (Thin Quad Flat Package) with 100 pins. Below is a detailed description of each pin's function.
2. Pin Function Table
Pin Number Pin Name Pin Function 1 VCC Supply Voltage (3.0V - 5.5V) 2 GND Ground 3 PA0 Port A, Pin 0, Digital I/O, ADC0 4 PA1 Port A, Pin 1, Digital I/O, ADC1 5 PA2 Port A, Pin 2, Digital I/O, ADC2 6 PA3 Port A, Pin 3, Digital I/O, ADC3 7 PA4 Port A, Pin 4, Digital I/O, ADC4 8 PA5 Port A, Pin 5, Digital I/O, ADC5 9 PA6 Port A, Pin 6, Digital I/O, ADC6 10 PA7 Port A, Pin 7, Digital I/O, ADC7 11 PB0 Port B, Pin 0, Digital I/O, ICP1 (Input Capture) 12 PB1 Port B, Pin 1, Digital I/O, OC1A (Output Compare) 13 PB2 Port B, Pin 2, Digital I/O, OC1B (Output Compare) 14 PB3 Port B, Pin 3, Digital I/O, SS (Slave Select for SPI) 15 PB4 Port B, Pin 4, Digital I/O, MOSI (SPI Master Out Slave In) 16 PB5 Port B, Pin 5, Digital I/O, MISO (SPI Master In Slave Out) 17 PB6 Port B, Pin 6, Digital I/O, SCK (SPI Clock ) 18 PB7 Port B, Pin 7, Digital I/O, RESET (External Reset Pin) 19 PC0 Port C, Pin 0, Digital I/O, ADC8 20 PC1 Port C, Pin 1, Digital I/O, ADC9 21 PC2 Port C, Pin 2, Digital I/O, ADC10 22 PC3 Port C, Pin 3, Digital I/O, ADC11 23 PC4 Port C, Pin 4, Digital I/O, ADC12 24 PC5 Port C, Pin 5, Digital I/O, ADC13 25 PC6 Port C, Pin 6, Digital I/O, TOSC1 (Oscillator) 26 PC7 Port C, Pin 7, Digital I/O, TOSC2 (Oscillator) 27 PD0 Port D, Pin 0, Digital I/O, RXD (USART Receive) 28 PD1 Port D, Pin 1, Digital I/O, TXD (USART Transmit) 29 PD2 Port D, Pin 2, Digital I/O, INT0 (External Interrupt 0) 30 PD3 Port D, Pin 3, Digital I/O, INT1 (External Interrupt 1) 31 PD4 Port D, Pin 4, Digital I/O, T0 (Timer/Counter 0) 32 PD5 Port D, Pin 5, Digital I/O, T1 (Timer/Counter 1) 33 PD6 Port D, Pin 6, Digital I/O, T2 (Timer/Counter 2) 34 PD7 Port D, Pin 7, Digital I/O, PWM Output 35 PE0 Port E, Pin 0, Digital I/O, ADC14 36 PE1 Port E, Pin 1, Digital I/O, ADC15 37 PE2 Port E, Pin 2, Digital I/O, CLK (Clock Out) 38 PE3 Port E, Pin 3, Digital I/O, XCK (External Clock) 39 PE4 Port E, Pin 4, Digital I/O, AREF (Analog Reference) 40 PE5 Port E, Pin 5, Digital I/O, AVCC (Analog Power ) 41 PF0 Port F, Pin 0, Digital I/O, ADC16 42 PF1 Port F, Pin 1, Digital I/O, ADC17 43 PF2 Port F, Pin 2, Digital I/O, ADC18 44 PF3 Port F, Pin 3, Digital I/O, ADC19 45 PF4 Port F, Pin 4, Digital I/O, ADC20 46 PF5 Port F, Pin 5, Digital I/O, ADC21 47 PF6 Port F, Pin 6, Digital I/O, ADC22 48 PF7 Port F, Pin 7, Digital I/O, ADC23 49 PG0 Port G, Pin 0, Digital I/O, T2 (Timer) 50 PG1 Port G, Pin 1, Digital I/O, T3 (Timer) 51 PG2 Port G, Pin 2, Digital I/O, SPI (Slave) 52 PG3 Port G, Pin 3, Digital I/O, PWM 53 PG4 Port G, Pin 4, Digital I/O, PWM 54 PG5 Port G, Pin 5, Digital I/O, PWM 55 PG6 Port G, Pin 6, Digital I/O, ADC24 56 PG7 Port G, Pin 7, Digital I/O, ADC25 57 VCC Power Supply (3.0V - 5.5V) 58 GND Ground 59 RESET External Reset Pin 60 AVCC Analog Power Supply 61 AREF Analog Reference Pin 62 RESET Reset Pin 63 XTAL1 External Oscillator Pin 1 64 XTAL2 External Oscillator Pin 2 65-99 Unused N/A3. FAQ (20 Common Questions)
1. Q: What is the supply voltage range for ATMEGA640-16AU?A: The supply voltage for ATMEGA640-16AU is between 3.0V and 5.5V.
2. Q: How many digital I/O pins are available in ATMEGA640-16AU?A: There are 53 general-purpose digital I/O pins in the ATMEGA640-16AU.
3. Q: Can ATMEGA640-16AU operate with an external clock?A: Yes, it has pins XTAL1 and XTAL2 for connecting an external clock source.
4. Q: How many ADC channels are available on ATMEGA640-16AU?A: There are 16 ADC channels available on the ATMEGA640-16AU.
5. Q: Does ATMEGA640-16AU support PWM functionality?A: Yes, ATMEGA640-16AU supports PWM functionality on multiple pins including PB3, PB4, and PD7.
6. Q: What is the maximum clock speed for ATMEGA640-16AU?A: The maximum clock speed for ATMEGA640-16AU is 16 MHz.
7. Q: Can I use the USART interface for communication?A: Yes, pins PD0 (RXD) and PD1 (TXD) are used for USART communication.
8. Q: How many external interrupts are supported by ATMEGA640-16AU?A: It supports 3 external interrupts (INT0, INT1, INT2) on PD2, PD3, and PD4.
9. Q: Can I use ATMEGA640-16AU for motor control applications?A: Yes, the ATMEGA640-16AU can be used for motor control through PWM outputs and timer features.
10. Q: Does the ATMEGA640-16AU have internal EEPROM memory?A: Yes, it has 4KB of internal EEPROM memory.
11. Q: What is the purpose of the AREF pin?A: The AREF pin is used for the analog reference voltage for the ADC.
12. Q: What type of package does ATMEGA640-16AU come in?A: The ATMEGA640-16AU comes in a 100-pin TQFP package.
13. Q: Can I use ATMEGA640-16AU in battery-powered applications?A: Yes, ATMEGA640-16AU is suitable for battery-powered applications, especially with low power consumption features.
14. Q: Does ATMEGA640-16AU have SPI functionality?A: Yes, ATMEGA640-16AU supports SPI on pins PB4, PB5, PB6, and PB7.
15. Q: How many timers are available on ATMEGA640-16AU?A: ATMEGA640-16AU has 3 timers (Timer/Counter 0, Timer/Counter 1, Timer/Counter 2).
16. Q: How is the reset function implemented on ATMEGA640-16AU?A: ATMEGA640-16AU has a dedicated external RESET pin to reset the microcontroller.
17. Q: What is the purpose of the AVCC pin?A: The AVCC pin is used for providing the analog power supply to the microcontroller.
18. Q: Can ATMEGA640-16AU handle high-speed data transfers?A: Yes, ATMEGA640-16AU supports high-speed data transfer through USART, SPI, and I2C interfaces.
19. Q: How do I configure the ADC channels?A: The ADC channels are configured through the ADMUX register, and the results are read via the ADC data register.
20. Q: How do I reset the ATMEGA640-16AU?A: ATMEGA640-16AU can be reset using the RESET pin or through software by writing to the reset register.
I hope this information covers the necessary details you requested for the ATMEGA640-16AU. Let me know if you need further clarification or any more details!
