A New Level of System Performance with Core Independent Peripherals The tiny817 product series features a high level of Core Independent Peripherals (CIPs) that can be combined to perform a wide variety of functions without the core. Combined with the Event System, this brings a whole new level of system performance allowing peripherals to communicate, transfer data and signal directly to each other to make intelligent decisions without the use of the CPU. This increases throughput, lowers power consumption and improves predictability with capacitive touch (PTC), analog and serial peripherals. Event System offers is a huge benefit for many applications such as general purpose, white goods, automotive and lighting.

Event System The Event Systems 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. Meaning, 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.

In addition, 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.

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 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. Integrated Analog The on board dual 10-bit, 150 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. On-board Safety and Monitoring The tiny817 product family features the Windowed Watchdog timer and Cyclic Redundancy Check with Automated Memory Scan.

In recent years, microcontroller designers have added the capability for the chip to program its own flash (often called self-programming). What this means is that a program burned on a microcontroller can actually change its own program. In most cases this is not a good idea, a program can overwrite itself, damage itself,.

Together, these hardware-based CIPs provide engineers with the necessary features to easily incorporate safety and system management into their application. Flexible and Feature Rich Timer/Counters The tiny 817 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. 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 I 2C 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. Configurable Custom Logic The Configurable Custom Logic (CCL) 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.

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