- PIC MCUs
- AVR MCUs
- 16-bit Pulse Width Modulation
- 24-bit Signal Measurement Timer
- Angular Timer
- Configurable Logic Cell
- Cyclic Redundancy Check
- Complementary Waveform Generator
- Event System
- Hardware Limit Timer
- High Endurance Flash
- Math Accelerator
- Numerically Controlled Oscillator
- Peripheral Pin Select
- Temperature Indicator
- Windowed Watch Dog Timer
- Intelligent Analog
- Core Independent
- Functional Safety
- Development Tools
8-bit Development Tools
ATtiny3217 Product Family
Next-Generation tinyAVR® Family
Demonstrating Microchip’s commitment to supporting the strong legacy of the AVR® family of 8-bit microcontrollers (MCUs), this tinyAVR® family expands the performance of the latest generation of AVR MCUs. These devices
incorporate several features including Core Independent Peripherals, a Peripheral Touch Controller (PTC) and a Peripheral Event System. These devices are also supported by Atmel START, an intuitive, online graphical configuration tool for embedded
projects that allows you to configure drivers and software for your device.
tinyAVR devices offer an unrivalled combination of miniaturization, processing power, analog performance and system-level integration. The tinyAVR MCU is the most compact, feature-rich device in the AVR family.
The Event System allows peripherals to communicate directly with each other without involving the CPU or bus resources. The Event System is network independent of the traditional data bus paths. This means different triggers at the peripheral level can result in an event, such as a timer tick triggering a reaction in another peripheral. The Event System has six independent channels and offers a fixed latency of two cycles. Since there is no jitter, it is 100% deterministic method and a perfect fit for real-time applications. No events are lost, and they are handled at a peripheral level in two cycles, even if the CPU is performing a non-maskable interrupt.
The ATtiny3217 Xplained Pro is the ideal platform for rapid prototyping with these new tinyAVR® MCUs. The USB-powered kit features an onboard
programmer/debugger that seamlessly integrates with Atmel Studio, to offer an easy and convenient way to evaluate the device. The board also comes with touch buttons, LEDs and extension headers for quick setup.
For development with the smaller memory derivatives of the tinyAVR family, we also recommend the ATtiny817 Xplained Pro Kit.
Significantly reduce your development time with Atmel START, our intuitive, web-based graphical configuration tool for embedded projects. While you navigate through the easy-to-use interface, Atmel START generates factory-validated C-code to help get your design started quickly. Get started today at start.atmel.com.
With a few clicks, Atmel START projects can be imported into the Atmel Studio Integrated Development Environment (IDE) and can be easily modified at any time. Download Atmel Studio 7.
Building Blocks for Real-Time Control
The Peripheral Touch Controller (PTC) is an autonomous unit that acquires and processes capacitive touch signals. It supports buttons, sliders and wheel configurations in addition to proximity sensing with one pin per sensor and no external components needed. This CIP offers a broad range of touch enabled features, such as mutual and self-capacitance, noise filtering, moisture tolerance, auto calibration over temperature and voltage, as well as wake-up upon touch and/or proximity from sleep mode. All of this enables a user-friendly interface that improves system performance and offers increased robustness, lower power consumption and end-application differentiation.
The on board dual 10-bit, 115 ksps ADC and 8-bit DAC with multiple selectable internal voltage references and comparators can be connected internally to create closed-loop feedback without requiring pins or PCB space or can be used for other functions within the applications. In addition, the on-board analog comparator offers fast propagation delay which is configurable through hysteresis. The analog comparator can also be connected directly with the DAC and the output is directly available on a pin.
The tiny3217 series of devices feature two 16-bit timer/counters and one 12-bit timer/counter optimized for control applications. The 16-bit counters can be split into 8-bit counters and proved accurate program execution timing, frequency and waveform generation, and command execution. Two timer/counters also support input capture with time and frequency measurement of digital signals. The 12-bit timer/counter is a high-performance waveform controller that consists of an asynchronous counter, a prescaler, compare logic, capture logic, and control logic. This is perfectly suited for applications such as LED, motor control, H-bridge and power converters.
There are several serial devices on-board, which are all CIPs. The USART supports full-duplex communication, asynchronous and synchronous operation and one-wire configurations. The USART can be set in Serial Peripheral Interface (SPI) master mode and used for SPI communication. The dedicated SPI is a high-speed full duplex synchronous data transfer interface using three or four pins. It allows fast communication. The I2C supports both master and slave modes with address match up to 10-bit in 100k, 400k and 1 Mbit/s. Both modes are SMBus compatible.
The Configurable Custom Logic is a programmable logic peripheral which can be connected to the device pins, events, or other internal peripherals. This allows the user to eliminate logic gates for glue logic functions on the PCB. Each Lookup Table (LUT) consists of three inputs, a truth table, options synchronizer, filter and edge detector. Each LUT can generate an output that can be routed internally or available on pins. This eliminates the need for external logic and reduces BOM cost.
ATtiny3217 Key Attributes
- Internal 20 MHz oscillator
- Up to 32 KB of FLASH memory
- Up to two 10-bit ADCs
- Peripheral Touch Controller (PTC)
- 8-bit DAC
- Cyclic Redundancy Check (CRC) scan
- 16-bit real time clock and periodic interrupt timer
- Advanced 12-bit timer/counter for control applications
- Configurable Custom Logic (CCL) peripheral
- 6-channel Peripheral Event System
- Analog comparator reference input
- Configurable, internally generated reference voltage