Capacitive Touch
The Peripheral Touch Controller (PTC) is an autonomous unit that acquires and processes capacitive touch signals. It supports buttons, sliders and wheel configurations, as well as proximity sensing, with one pin per sensor without requiring any external components. 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. These features enable a user-friendly interface that improves system performance and offers increased robustness, lower power consumption and end-application differentiation.
 
Integrated Analog
The on-board dual 10-bit, 115 ksps Analog-to-Digital Converter (ADC) and 8-bit Digital-to-Analog Converter (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.

On-Board Safety and Monitoring
The tiny3217 product family features the Windowed Watchdog Timer (WWDT) and Cyclic Redundancy Check (CRC) with Automated Memory Scan. Together, these hardware-based CIPs provide you with the necessary features to easily incorporate safety and system management into your application.

Flexible and Feature-Rich Timer/Counters
The ATtiny3217 series of devices features 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 provide 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 LED, motor control, H-bridge and power converter applications.

Serial Peripherals
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 Mbps. Both modes are SMBus compatible.

Configurable Custom Logic (CCL)
The Configurable Custom Logic is a programmable logic peripheral that can be connected to the device pins, events, or other internal peripherals. This allows you 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.