ATMEGA16A-AU

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1. Describe

ATmega16A is a low-power CMOS 8-bit microcontroller based on Atmel AVR's enhanced RISC architecture. By executing powerful instructions in a single clock cycle, ATmega16A achieves a throughput close to 1MIPS/MHz, enabling system designers to optimize power consumption and processing speed.

2. Features

    1. High-performance, Low-power Atmel AVR 8-bit Microcontroller

    2. 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

    3. 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

    4. 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

    5. 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

    6. 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

    7. I/O and Packages

        - 32 Programmable I/O Lines

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

    8. Operating Voltages

        - 2.7 - 5.5V

    9. Speed Grades

        - 0 - 16MHz

  10. Power Consumption @ 1MHz, 3V, and 25°C

        - Active: 0.6mA

        - Idle Mode: 0.2mA

        - Power-down Mode: < 1µA

3. Pin Configurations

4. Package overview

5. Function Description

The Atmel AVR core combines a rich instruction set and 32 general-purpose working registers. All 32 The register is directly connected to the arithmetic logic unit (ALU), allowing two independent registers Accessed in one instruction executed in one clock cycle. The generated architecture code is more efficient At the same time, it achieves throughput ten times faster than traditional CISC microcontrollers. ATmega16A provides the following features: 16KB in-system programmable flash program Memory with read-write function; 512 bytes EEPROM; 1KB SRAM; 32 general-purpose I/O lines, 32 general-purpose working registers; JTAG interface for boundary scan; on-chip debugging support and programming; three flexible comparison modes Timer/counter; internal and external interrupts; continuous play programmable USART; a byte-oriented two-wire serial interface, one 8-channel; 10-bit ADC, optional differential input stage with programmable gain (only in TQFP package) ); Programmable watchdog timer internal oscillator; a SPI serial port; and six software-selectable power-saving modes. Idle mode stopping the CPU also allows USART; two-wire interface; analog-to-digital converter; static random access memory; timer/counter; SPI port; and interrupt the system to continue operation. The power-down mode saves the register contents but freezes the oscillator and disables all other chip functions until the next external interrupt or hardware reset. Power saving In this mode, the asynchronous timer continues to run, allowing the user to maintain a timer base while the rest of the device is sleeping. The ADC noise reduction mode will stop the CPU and all I/O modules (except asynchronous), the timer and ADC can minimize the switching noise during ADC conversion. In standby mode, the crystal resonator oscillator is running, while the rest of the device is sleeping. This allows very fast startup in combination with low power consumption. In the extended standby mode, both the main oscillator and the asynchronous timer continue to work. The device is manufactured using Atmel's high-density non-volatile memory technology. The on-chip ISP flash memory allows program memory to be reprogrammed in the system via the SPI serial interface. Non-volatile memory programmer, or through an on-chip boot program running on the AVR core. When the software is updated in the flash part of the application, the boot flash part will continue to run, providing a real ReadWhile-Write operation. By combining an 8-bit RISC CPU with self-programming flash memory in the system, Atmel ATmega16A is a powerful single-chip microcontroller that can provide highly flexible and cost-effective solutions for many embedded control applications. ATmega16A has a complete set of program and system development tool support, including: C compiler, macro assembler, program debugger/simulator, online simulator and evaluation kit.