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
– Up to 32 KB in-system self-programmable Flash memory
– 256B EEPROM
– Up to 4 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
– Two 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)
– 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 17/16 programmable I/O pins
– 20-pin VQFN 3x3 mm
– 20-pin SOIC
– 14-pin SOIC
• Temperature Ranges:
– Industrial: -40°C to +85°C
– Extended: -40°C to +125°C