ATmega16

The ATmega ATmega16 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega16 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Pinout:

Pinout of ATmega16

1	PB0(XCK/T0)	Pin 0 of PORTB	T0( Timer0 External Counter Input) XCK ( USART External Clock I/O)
2	PB1(T1)	Pin 1 of PORTB	T1(Timer1 External Counter Input)
3	PB2(INT2/AIN0)	Pin 2 of PORTB	AIN0(Internal Analog Comparator Positive Input) INT2( External Interrupt 2 Input)
4	PB3(OC0/AIN1)	Pin 3 of PORTB	AIN1(Internal Analog Comparator Negative Input) OC0 (Timer0 Output Compare Match Output) or PWM output
5	PB4(SS )	Pin 4 of PORTB	SS (SPI Slave Select Input). This pin is low when controller acts as slave. [Serial Peripheral Interface (SPI) for programming]
6	PB5(MOSI)	Pin 5 of PORTB	MOSI (Master Output Slave Input). When controller acts as slave, the data is received by this pin. [Serial Peripheral Interface (SPI) for programming]
7	PB6(MISO)	Pin 6 of PORTB	MISO (Master Input Slave Output). When controller acts as slave, the data is sent to master through this pin. [Serial Peripheral Interface (SPI) for programming]
8	PB7(SCK)	Pin 7 of PORTB	SCK (SPI Bus Serial Clock). This is the clock shared between this controller and other system for accurate data transfer. [Serial Peripheral Interface (SPI) for programming]
9	RESET	Reset Pin (Active Low Reset)
10	VCC	Connected to +5V
11	GND	Connected to GROUND
12	XTAL2	Connected to Crystal Oscillator
13	XTAL1	Connected to Crystal Oscillator
14	PD0(RXD)	Pin 0 of PORTD	RXD (USART Input Pin) [USART Serial Communication Interface can be used for programming]
15	PD1(TXD)	Pin 1 of PORTD	TXD (USART Output Pin) [USART Serial Communication Interface can be used for programming]
16	PD2(INT0)	Pin 2 of PORTD	External Interrupt INT0
17	PD3(INT1)	Pin 3 of PORTD	External Interrupt INT1
18	PD4(OC1B)	Pin 4 of PORTD	OC1B (Timer Output Compare Match Output) or PWM output
19	PD5(OC1A)	Pin 5 of PORTD	OC1A (Timer Output Compare Match Output) or PWM output
20	PD6(ICP)	Pin 6 of PORTD	Timer/Counter1 Input Capture Pin
21	PD7 (OC2)	Pin 7 of PORTD	Timer/Counter2 Output Compare Match Output
22	PC0 (SCL)	Pin 0 of PORTC	TWI Interface
23	PC1 (SDA)	Pin 1 of PORTC	TWI Interface
24	PC2 (TCK)	Pin 2 of PORTC	JTAG Interface
25	PC3 (TMS)	Pin 3 of PORTC	JTAG Interface
26	PC4 (TDO)	Pin 4 of PORTC	JTAG Interface
27	PC5 (TDI)	Pin 5 of PORTC	JTAG Interface
28	PC6 (TOSC1)	Pin 6 of PORTC	Timer Oscillator Pin 1
29	PC7 (TOSC2)	Pin 7 of PORTC	Timer Oscillator Pin 2
30	AVcc	Vcc for Internal ADC Converter
31	GND	GROUND
32	AREF	Analog Reference Pin for ADC
33	PA7 (ADC7)	Pin 7 of PORTA	ADC (Analog to Digital Converter) Channel 7
34	PA6 (ADC6)	Pin 6 of PORTA	ADC (Analog to Digital Converter) Channel 6
35	PA5 (ADC5)	Pin 5 of PORTA	ADC (Analog to Digital Converter) Channel 5
36	PA4 (ADC4)	Pin 4 of PORTA	ADC (Analog to Digital Converter) Channel 4
37	PA3 (ADC3)	Pin 3 of PORTA	ADC (Analog to Digital Converter) Channel 3
38	PA2 (ADC2)	Pin 2 of PORTA	ADC (Analog to Digital Converter) Channel 2
39	PA1 (ADC1)	Pin 1 of PORTA	ADC (Analog to Digital Converter) Channel 1
40	PA0 (ADC0)	Pin 0 of PORTA	ADC (Analog to Digital Converter) Channel 0

Applications:

Hobbyists applications
Engineers design
Temperature control systems
Analog signal measuring and manipulations.
Embedded systems like coffee machine, vending machine.
Motor control systems.
Digital signal processing.
Peripheral Interface system.

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