ATtiny817 Product Family
A New Level of System Performance with Core Independent Peripherals
The ATtiny817 product series features a high level of Core Independent Peripherals (
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
Integrated Analog
The
On-board Safety and Monitoring
The ATtiny817 product family features the Windowed Watchdog timer and Cyclic Redundancy Check with Automated Memory Scan. 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 ATtiny817 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
Serial Peripherals
There are several serial devices
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.
CPU
- AVR® 8-bit CPU
- Running at up to 20MHz
- Single cycle I/O access
- Two-level interrupt controller
- Two-cycle hardware multiplier
Memories
- 4/8KB In-system self-programmable Flash memory
- 128B EEPROM
- 256/512B SRAM
System
- Power-on Reset (POR)
- Brown-out Detection (BOD)
- Internal and external clock options:
- 16/20MHz low power RC
- 32.768kHz Ultra Low Power (ULP)
- 32.768kHz external crystal oscillator
- External clock input
- Single pin programming and debugging interface (UPDI)
Three Sleep Modes
- Idle with all peripherals running and mode for immediate wake up time
- Standby
- Power Down
I/O and Packages
- 12 to 22 programmable I/O lines
- 14-pin SOIC150
- 20-pin QFN 3x3 and SOIC300
- 24-pin QFN 4x4
Temperature Ranges
- -40°C to 105°C within specification
Speed Grades
- 0-5MHz @ 1.8V – 5.5V
- 0-10MHz @ 2.7V – 5.5V
- 0-20MHz @ 4.5V – 5.5V
Featured Documents
- Product Brief - DS40001744
- Programming Spec - DS40001738
- Product Brief - DS40001768
- Programming Spec - DS40001753
Peripherals
- One 16-bit Timer/Counter type A with dedicated period register, 3 compare channels (TCA)
- One 16-bit Timer/Counter type B with input capture (TCB)
- One 12-bit Timer/Counter type D optimized for control applications (TCD)
- 16-bit Real Time Counter (RTC) running from external crystal or internal RC oscillator
- One USART with fractional baud rate generator, autobaud, and start-of-frame detection
- Master/slave Serial Peripheral Interface (SPI)
- Master/slave I2C with dual address match up to 1MHz – I2C and SMBUS compliant
- Configurable Custom Logic (CCL) with two programmable Lookup Tables (LUT)
- Analog Comparator (AC) with fast propagation delay
- 10-bit 150ksps Analog to Digital Converter (ADC)
- 8-bit Digital to Analog Converter (DAC)
- Automated CRC memory scan
- Window Watchdog Timer (WDT) with separate on-chip oscillator
- Peripheral Touch Controller (PTC)(1)
- Capacitive touch buttons, sliders and wheels
- Wake-up on touch
- Driven shield for improved moisture and noise handling performance
- Six self-capacitance and nine mutual-capacitance channels
- External interrupt on all general purpose pins