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1 Features
- AVR® CPU
- Single-cycle I/O access
- Two-level interrupt controller
- Two-cycle hardware multiplier
- Memories
- Up to 48 KB In-system self-programmable Flash memory
- 256B EEPROM
- Up to 6 KB SRAM
- 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)
- Clock options:
- 16/20 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 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 limited wake-up functionality
- Peripherals
- One 16-bit Timer/Counter type A (TCA) with a dedicated period register and
three compare channels
- Four 16-bit Timer/Counter type B with input capture (TCB)
- One 16-bit Real-Time Counter (RTC) running from an external crystal or an
internal RC oscillator
- Four USART with fractional baud rate generator, auto-baud, and
start-of-frame detection
- Master/slave Serial Peripheral Interface (SPI)
- Dual mode Master/Slave 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 up to four programmable Look-up Tables
(LUT)
- One Analog Comparator (AC) with a scalable reference input
- One 10-bit 150 ksps Analog to Digital Converter (ADC)
- Five selectable internal voltage references: 0.55V, 1.1V, 1.5V, 2.5V, and
4.3V
- CRC code memory scan hardware
- Optional automatic scan before code execution is allowed
- Watchdog Timer (WDT) with Window mode, with separate on-chip
oscillator
- External interrupt on all general purpose pins
- I/O and Packages:
- 34 programmable I/O lines
- 40-pin PDIP
- Temperature Range: -40°C to 125°C
- Speed Grades -40°C to 105°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