Features
- High-Performance Low-Power AVR® CPU
- Running at up to 20 MHz
- Single-cycle I/O access
- Two-level interrupt
controller with vectored interrupts
- Two-cycle hardware
multiplier
- Supply voltage range: 1.8V to 5.5V
- Memories
- 16 KB In-System self-programmable Flash memory
- 2 KB SRAM
- 256B EEPROM
- 32B of user row in nonvolatile memory that can keep data during chip-erase
and be programmed while the device is locked
- Write/erase endurance
- Flash 10,000
cycles
- EEPROM 100,000
cycles
- Data retention: 40 years at
55°C
- System
- Power-on Reset (POR)
- Brown-out Detection
(BOD)
- Clock options
- Lockable 20 MHz Low-Power internal
oscillator
- 32.768 kHz Ultra
Low-Power (ULP) internal oscillator
- 32.768 kHz external
crystal oscillator
- External clock
input
- Single-pin Unified Program
and Debug Interface (UPDI)
- Three sleep modes
- Idle with all
peripherals running and immediate wake-up time
- Standby
- Configurable
operation of selected peripherals
- SleepWalking
peripherals
- Power-Down with full
data retention
- Peripherals
- One 16-bit Timer/Counter type A (TCA) with a
dedicated period register and three PWM channels
- Two 16-bit Timer/Counter type
B (TCB) with input capture and simple PWM functionality
- One 16-bit Real-Time Counter
(RTC) running from external 32.768 kHz crystal or internal 32.768 kHz ULP
oscillator
- Two Universal Synchronous
Asynchronous Receiver Transmitter (USART) with fractional baud rate
generator, auto-baud, and start-of-frame detection
- Master/Slave Serial
Peripheral Interface (SPI)
- Master/Slave Two-Wire
Interface (TWI) with dual address match
- 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 (LUT)
- One Analog Comparator (AC)
with scalable reference input
- One 12-bit differential 375
ksps Analog-to-Digital Converter (ADC) with Programmable Gain Amplifier
(PGA) and up to 15 input channels
- Multiple internal voltage
references
- 1.024V
- 2.048V
- 2.500V
- 4.096V
- VDD
- 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
- I/O and Packages
- Up to 22
programmable I/O pins
- 14-pin
- 20-pin
- 24-pin
- Temperature Ranges
- -40°C to 85°C (standard)
- -40°C to 125°C
(extended)
- Speed Grades (-40°C to 85°C)
- 0-5 MHz @ 1.8V – 5.5V
- 0-10 MHz @ 2.7V – 5.5V
- 0-20 MHz @ 4.5V – 5.5V
- Speed Grades (-40°C to 125°C)
- 0-8 MHz @ 2.7V - 5.5V
- 0-16 MHz @ 4.5V - 5.5V