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Features
- AVR® CPU
- Running at up to 20 MHz
- Single-cycle I/O register
access
- Two-level interrupt
controller
- Two-cycle hardware
multiplier
- Program and Debug Interface Disable (PDID)
- Supply voltage range: 1.8-5.5V
- Memories
- 32 KB In-system-programmable
Flash memory with a true read-while-write operation
- 3 KB SRAM
- 512B EEPROM
- 64B 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)
circuit
- Brown-out Detector (BOD) with
user-programmable levels
- Voltage Level Monitor (VLM)
with interrupt at a programmable level above the BOD level
- Clock options:
- High-precision internal oscillator with
selectable frequency up to 20 MHz
(OSCHF)
- Auto-tuning
for improved internal oscillator accuracy
- Internal PLL up to 80 MHz for high-frequency operation of
Timer/Counter type E/F
- Internal ultra-low
power 32.768 kHz oscillator (OSC32K)
- External 32.768 kHz
crystal oscillator (XOSC32K)
- External clock
input
- 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
- Peripherals
- Two 16-bit Timer/Counters
type B (TCB) with input capture for capture and signal measurements
- One 16-bit Timer/Counter type E (TCE) with
four compare channels for PWM
generation and Waveform Extension (WEX)
- One 24-bit
Timer/Counter type F (TCF) for frequency generation
- One 16-bit Real-Time Counter
(RTC) that can run from an external crystal or internal oscillator
- One USART with fractional
baud rate generator, auto-baud, and start-of-frame detection
- One host/client Serial
Peripheral Interface (SPI)
- One Two-Wire Interface (TWI)
with dual address match
- Independent host and
client operation (Dual mode)
- Phillips
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 up to four programmable Look-up Tables (LUTs)
- One 12-bit, 300 ksps, differential Analog-to-Digital Converter (ADC) with a programmable gain
amplifier (PGA)
- Two Analog Comparators (ACs)
with window compare functions
- Multiple voltage references
(VREF)
- 1.024V
- 2.048V
- 2.500V
- 4.096V
- VREFA
- VDD
- Automated Cyclic Redundancy
Check (CRC) Flash program memory scan
- Watchdog Timer (WDT) with Window mode and
separate on-chip oscillator
- External interrupt on all
general purpose pins
- I/O and Packages:
- Up to 28/27 programmable I/O
pins
- 14-pin SOIC and TSSOP
- 20-pin SSOP
- 28-pin SPDIP, SSOP and VQFN
- 32-pin
VQFN and TQFP
- Temperature Ranges
- Industrial: -40°C to 85°C
ambient
- Extended: -40°C to 125°C
ambient