ATmega16 Microcontroller: Datasheet, Pinout and Alternatives

The ATmega16A is a low-power CMOS 8-bit microcontroller based on the Atmel AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega16A achieves throughputs approaching 1MIPS per MHz allowing the system designers to optimize power consumption versus processing speed.

• l  High-performance, Low-power Atmel AVR 8-bit Microcontroller
• l  Advanced RISC Architecture

̶ 131 Powerful Instructions – Most Single-clock Cycle Execution

̶ 32 x 8 General Purpose Working Registers

̶ Fully Static Operation

̶ Up to 16MIPS Throughput at 16MHz

̶ On-chip 2-cycle Multiplier

• l  High Endurance Non-volatile Memory segments

̶ 16KBytes of In-System Self-programmable Flash program memory

̶ 512Bytes EEPROM

̶ 1KByte Internal SRAM

̶ Write/Erase Cycles: 10,000 Flash/100,000 EEPROM

̶ Data retention: 20 years at 85°C/100 years at 25°C(1)

̶ Optional Boot Code Section with Independent Lock Bits

• In-System Programming by On-chip Boot Program
• True Read-While-Write Operation

̶ Programming Lock for Software Security

• l  z JTAG (IEEE std. 1149.1 Compliant) Interface

̶ Boundary-scan Capabilities According to the JTAG Standard

̶ Extensive On-chip Debug Support

̶ Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface

• l  z Peripheral Features

̶ Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes

̶ One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and

Capture Mode

̶ Real Time Counter with Separate Oscillator

̶ Four PWM Channels

̶ 8-channel, 10-bit ADC

• 8 Single-ended Channels
• 7 Differential Channels in TQFP Package Only
• 2 Differential Channels with Programmable Gain at 1x, 10x, or 200x

̶ Byte-oriented Two-wire Serial Interface

̶ Programmable Serial USART

̶ Master/Slave SPI Serial Interface

̶ Programmable Watchdog Timer with Separate On-chip Oscillator

̶ On-chip Analog Comparator

l  Special Microcontroller Features

̶ Power-on Reset and Programmable Brown-out Detection

̶ Internal Calibrated RC Oscillator

̶ External and Internal Interrupt Sources

̶ Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended Standby

l  I/O and Packages

̶ 32 Programmable I/O Lines

̶ 40-pin PDIP, 44-lead TQFP, and 44-pad QFN/MLF

l  Operating Voltages

̶ 2.7 - 5.5V

l  Speed Grades

̶ 0 - 16MHz

l  z Power Consumption @ 1MHz, 3V, and 25°C

̶ Active: 0.6mA

̶ Idle Mode: 0.2mA

̶ Power-down Mode: < 1µA

ATMEGA8, ATMEGA328p.

Microchip Technology ATMEGA16A-PU technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology ATMEGA16A-PU.

ATmega16 microcontroller is one of the popular controllers in AVR series. With its features and purchase cost it became one of favorite controller for both hobbyists and engineers. ATmega16 programming is similar to any other AVR controller. It is particularly a clone to ATMEGA32 except for the memory. Although it has only half the memory of ATmega32, it is still more than enough to satisfy most EMBEDDED SYSTEMS. 

ATmega16 has also sleep modes. The modes can be triggered at desired times to save power. With various sleep modes on board ATMEGA16 can work on MOBILE EMBEDDED SYSTEMS.

ATMEGA16 has 32 programmable Input/output pins, with them ATmega16 can interface many peripherals easily.

ATMEGA16 has also programmable Watchdog Timer with Separate On-chip Oscillator. With this Watchdog timer to reset under error the controller can be used on applications where human interference in minimal. 

As mentioned earlier ATmega16 is similar to any other microcontroller and in particular ATmega32. It basically can perform any function that is performed by ATmega32. Similar to them it is not Plug and Play digital ICs. For working of ATmega16, first we need to save the program HEX code in ATmega16 FLASH MEMORY. After executing this code ATmega16 creates the desired response.

Entire process of using an ATmega16 goes like this:

• List the functions to be executed by ATMEGA16 in a paper.

• Next download program developing application (called IDE) for AVR controllers.

• Write the functions in ‘C’ language in IDE.

• After writing the program compile it in IDE. This eliminates errors.

• Make IDE application to generate HEX file for the written program after compiling.

• Choose the programming device (usually SPI programmer made for AVR controllers) which establishes communication between your Personal Computer and ATmega16.

• Run the HEX file burning software which is given for the chosen programming device.

• Choose the appropriate program HEX file in the programmer software.

• Burn the HEX file (Which contains program in the form of HEX code) in ATmega16 flash memory using this program.

Disconnect the programmer, connect the appropriate peripherals for the controller and power the system. With this ATmega16 executes the program and provides the response written in the saved program.

• 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.

Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.

Download datasheets and manufacturer documentation for Microchip Technology ATMEGA16A-PU.