Features
- CPU:
- AVR® CPU
- Running at up to 20 MHz
- Single-cycle I/O access
- Two-level interrupt
controller
- Two-cycle hardware
multiplier
- Memories:
- 8/16 KB In-system
self-programmable Flash memory
- 128/256B
EEPROM
- 512/1024B
SRAM
- 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 Detector (BOD)
- Clock options:
- 16/20 MHz
low-power internal RC oscillator
- 32.768 kHz Ultra Low-Power (ULP) internal
RC 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
- One 16-bit Timer/Counter type B (TCB) with
input capture
- One 16-bit Real-Time Counter (RTC) running
from 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
- 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)
- One Analog Comparator (AC)
with a low propagation delay
- One 10-bit 150
ksps Analog-to-Digital Converter
(ADC)
- 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 (CRCSCAN)
- External interrupt on all
general purpose pins
- I/O and Packages:
- 18 Programmable I/O
lines
- 20-pin VQFN 3x3 mm and
SOIC300
- 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