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Features

? AVR CPU in Dual-Core Lockstep (DCLS) Configuration

– Running at up to 20 MHz

– Single-cycle I/O access

– Two-level interrupt controller

– Two-cycle hardware multiplier

– Supply voltage range: 2.7-5.5V

? Memories

– 32 KB in-system-programmable Flash memory with ECC

– 4 KB SRAM with ECC

– 256B EEPROM with ECC

– 512B of user row in Non-Volatile Memory (NVM) that can keep data during chip-erase and be

programmed while the device is locked

– 256B of Boot Row for cryptographic keys, only readable from the Boot Section

? System

– Power-on Reset (POR)

– Brown-out Detector (BOD) with programmable levels

– Voltage Regulator Monitor (VMON)

– Clock options

? High-precision internal oscillator with selectable frequency up to 20 MHz

? PLL up to 48 MHz for high-frequency operation of the TCD

? Internal 32.768 kHz oscillator

? External 32.768 kHz crystal oscillator

? External clock input

? High-frequency external crystal oscillator

– Clock Failure Detection (CFD)

– Clock Frequency Measurement (CFM)

– Single-pin Unified Program and Debug Interface (UPDI)

– Three sleep modes

? Idle with all peripherals running for immediate wake-up

? Standby with a configurable operation of selected peripherals

? Power-Down with full data retention

– Automated Cyclic Redundancy Check (CRCSCAN) program memory scan

? Verification of the Boot Flash section

? CRC-16-CCITT or CRC-32 (IEEE 802.3)

– External interrupt on all general-purpose pins

? Peripherals

– 6-channel Event System for predictable and CPU-independent inter-peripheral signaling

– One 16-bit Timer/Counter type A (TCA) with three compare channels for PWM and waveform generation

– Up to four 16-bit Timer/Counter type B (TCB) with input capture for capture and signal measurements

– One 12-bit Timer/Counter type D (TCD) optimized for power control

– One 16-bit Real-Time Counter (RTC) that can run from an external crystal or internal oscillator

– Up to three USARTs

? Operation modes: RS-485, LIN client, host SPI, and IrDA

? Fractional baud rate generator, auto-baud, and start-of-frame detection

– Two SPI with host/client operation modes

– Two I2C with simultaneous host/client operation (dual mode) and dual address match

– One Configurable Custom Logic (CCL) with up to six programmable Lookup Tables (LUTs)

– Two 10-bit, 170 ksps, Analog-to-Digital Converters (ADC) with independent voltage reference sources

– One 10-bit Digital-to-Analog Converter (DAC)

– Three Analog Comparators (AC)

– Up to two Zero Cross Detectors (ZCD)

– Internal 1.024V, 2.048V, 4.096V and 2.500V voltage references, and external reference option

? System Integrity Functions

– Error Controller (ERRCTRL)

? Central interface for fault detection

? Fault handling in hardware according to programmable severity

? Optional Heartbeat output

? Optional tri-stating of all I/O pins in case of fault

– Parity on data buses

– Dual Watchdogs

? Synchronous Watchdog Timer (SWDT)

? Watchdog Timer (WDT) with window mode and separate on-chip oscillator with clock failure

detection

– Voltage Level Monitor (VLM) with interrupt

– Program and Debug Interface Disable (PDID)

? I/O and Packages

– Up to 25 programmable I/O pins

– Multi-voltage I/O with built-in voltage level converters

– 20-pin SSOP

– 28-pin VQFN, SSOP, and SPDIP

– 32-pin VQFN and TQFP

? Temperature Ranges

– Industrial: -40°C to +85°C

– Extended: -40°C to +125°C