Features
- CPU
- AVR® CPU
- Running at up to 20 MHz
- Single-cycle I/O access
- Two-level interrupt
controller
- Two-cycle hardware
multiplier
- Memories
- 32/16 KB In-system
self-programmable Flash memory
- 256 bytes EEPROM
- 2 KB SRAM
- Write/erase endurance:
- Flash 10,000
cycles
- EEPROM 100,000
cycles
- Data retention:
- System
- Power-on Reset (POR)
- Brown-out Detector (BOD)
- Clock options:
- 16/20 MHz low-power
internal RC oscillator
- 32.768 kHz Ultra
Low-Power (ULP) internal RC 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 for immediate wake-up
- Standby
- Configurable
operation of selected peripherals
- SleepWalking
peripherals
- Power-Down with full
data retention
- Peripherals
- One 16-bit Timer/Counter type
A (TCA) with dedicated period register and three compare channels
- Two 16-bit Timer/Counter type
B (TCB) with input capture
- One 12-bit Timer/Counter type
D (TCD) optimized for control applications
- One 16-bit Real-Time Counter
(RTC) running from an external crystal, external clock, or internal RC
oscillator
- Watchdog Timer (WDT) with Window mode, with a separate on-chip
oscillator
- One USART with fractional
baud rate generator, auto-baud, and start-of-frame detection
- One master/slave Serial
Peripheral Interface (SPI)
- One Two-Wire Interface (TWI)
with dual address match
- Philips
I2C compatible
- Standard mode (Sm,
100 kHz)
- Fast mode (Fm, 400
kHz)
- Fast mode plus (Fm+,
1 MHz)
- Three Analog Comparators (AC) with low propagation delay
- Two 10-bit 115 ksps
Analog-to-Digital Converters
(ADC)
- Three 8-bit Digital-to-Analog Converters
(DAC) with one external channel
- Multiple voltage references (VREF):
- 0.55V
- 1.1V
- 1.5V
- 2.5V
- 4.3V
- Event System (EVSYS) for CPU
independent and predictable inter-peripheral signaling
- Configurable Custom Logic
(CCL) with two programmable look-up
tables
- Automated CRC memory
scan
- Peripheral Touch Controller
(PTC)
- Capacitive touch
buttons, sliders, wheels and 2D surfaces
- Wake-up on touch
- Driven shield for
improved moisture and noise handling performance
- Up to 14 self capacitance
channels
-
Up to 49 mutual capacitance
channels
- External interrupt on all
general purpose pins
- I/O and Packages:
- 22 programmable I/O lines
- 24-pin VQFN 4x4 mm
- Temperature Ranges:
- -40°C to 105°C
- -40°C to 125°C
- Speed Grades:
- 0-5 MHz @ 1.8V – 5.5V
- 0-10 MHz @ 2.7V – 5.5V
- 0-20 MHz @ 4.5V – 5.5V