ATMEGA4809-AF

ATmega4808/4809 microcontrollers are part of the megaAVR 0- series, which uses the AVR processor with hardware multiplier running at up to 20 MHz, and offers a wide range of Flash sizes up to 48 KB, up to 6 KB of SRAM, and 256 bytes of EEPROM in 28-, 32-, 40-, or 48-pin packages. The series uses the latest technologies from Microchip with a flexible and low-power architecture, including Event System and SleepWalking, accurate analog features, and advanced peripherals. The devices offer 48 KB in a 28/32/40/48-pin package.

Key features

• AVR CPU:
• Single-cycle I/O access
• Two-level interrupt controller
• Two-cycle hardware multiplier
• Memories:
• 48 KB In-system self-programmable Flash memory
• 256B EEPROM
• 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
• Up to four 16-bit Timer/Counters type B (TCB) with input capture
• One 16-bit Real-Time Counter (RTC) running from an external crystal or an internal RC oscillator
• Up to four USARTs with fractional baud rate generator, auto-baud, and start-of-frame detect