Features

• AVR® CPU

– Running at up to 24 MHz

– Single-cycle I/O access

– Two-level interrupt controller

– Two-cycle hardware multiplier

– Supply voltage range: 1.8V to 5.5V

• Memories

– 64 KB in-system self-programmable Flash memory

– 256B EEPROM

– 8 KB SRAM

– 32B of user row in nonvolatile memory that can keep data during chip erase and can be programmed while

the device is locked

– Write/erase endurance

• Flash 1,000 cycles

• EEPROM 100,000 cycles

– Data retention: 40 years at 55°C

• System

– Power-on Reset (POR) circuit

– Brown-out Detector (BOD)

– Clock options

• High-precision internal high-frequency oscillator with selectable frequency up to 24 MHz (OSCHF)

– Auto-tuning for improved internal oscillator accuracy

• Internal PLL up to 48 MHz for high-frequency operation of Timer/Counter type D (PLL)

• 32.768 kHz ultra-low power internal oscillator (OSC32K)

• 32.768 kHz external crystal oscillator (XOSC32K)

• External clock input

• External high-frequency crystal oscillator (XOSCHF) with Clock Failure Detection

– 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 (CRC) Flash memory scan

– Watchdog Timer (WDT) with Window mode, with a separate on-chip oscillator

– External interrupt on all general purpose pins

• Peripherals

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

– Three 16-bit Timer/Counter type B (TCB) with input capture and signal measurements

– One 12-bit PWM 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

– Two USARTs

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

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

– One SPI with host/client operation modes

– One Two-Wire Interface (TWI) with dual address match

• Simultaneous host/client operation (Dual mode)

• Philips I2C compatible

• Standard mode (Sm, 100 kHz)

• Fast mode (Fm, 400 kHz)

• Fast mode Plus (Fm+, 1 MHz) (1)

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

– Configurable Custom Logic (CCL) with four programmable Look-up Tables (LUTs)

– One 12-bit differential 130 ksps Analog-to-Digital Converter (ADC)

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

– One Analog Comparator (AC)

– One Zero-Cross Detector (ZCD)

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

• I/O and Packages:

– Multi-Voltage I/O (MVIO) on I/O port C

– Selectable input voltage threshold

– Up to 27/26 programmable I/O pins

– 32-pin VQFN 5x5 mm and TQFP 7x7 mm

– 28-pin SPDIP, SSOP, SOIC and VQFN

• Temperature Ranges:

– Industrial: -40°C to +85°C

– Extended: -40°C to +125°C