Microchip Technology ATmega4808 Microcontrollers

Microchip Technology ATmega4808 Microcontrollers (MCUs) of the megaAVR^® 0-series uses the AVR^® processor with hardware multiplier. These MCUs run up to 20MHz, up to 6kB of SRAM, and 256bytes of EEPROM in the 28, 32, or 48-pin package. The ATmega4808 MCUs use technologies with a flexible, low-power architecture, including an event system and sleepwalking, accurate analog features, and advanced peripherals. These MCUs offer a range of Flash sizes from 32kB to 48kB in a 32-pin package.

Features

AVR^® CPU
- Single-cycle I/O access
- Two-level interrupt controller
- Two-cycle hardware multiplier
Memories
- Up to 48kB In-system self-programmable Flash memory
- 256B EEPROM
- Up to 6kB SRAM
- Write/Erase endurance:
  - Flash 10,000 cycles
  - EEPROM 100,000 cycles
  - Data retention of 20 years at 85°C
System
- Power-on Reset (POR) circuit
- Brown-out Detection (BOD)
- Clock options
  - 20MHz low-power internal oscillator with the fuse-protected frequency setting
  - 32.768kHz Ultra Low Power (ULP) internal oscillator
  - 32.768kHz external crystal oscillator
  - External clock input
- Single-pin Unified Program Debug Interface (UPDI)
- Three sleep modes
  - Idle with all peripherals running and mode for an immediate wake-up time
  - Standby
    - Configurable operation of selected peripherals
    - SleepWalking peripherals
  - Power down with limited wake-up functionality
-40°C to 125°C temperature range
Speed grades
- 0 to 5MHz @ 1.8V to 5.5V range
- 0 to 10MHz @ 2.7V to 5.5V range
- 0 to 20MHz @ 4.5V to 5.5V range

Peripherals
- One 16-bit Timer/Counter type A with a dedicated period register, three compare channels (TCA)
- Three 16-bit Timer/Counter type B with input capture (TCB)
- One 16-bit Real Time Counter (RTC) running from an external crystal or internal RC oscillator
- Three USART with fractional baud rate generator, autobaud, and start-of-frame detection
- Master/slave Serial Peripheral Interface (SPI)
- Dual mode Master/Slave TWI with a dual address match
  - Standard mode (Sm, 100kHz)
  - Fast mode (Fm, 400kHz)
  - Fast mode plus (Fm+, 1MHz)
- Event System for CPU independent and predictable inter-peripheral signaling
- Configurable Custom Logic (CCL) with up to four programmable Lookup Tables (LUT)
- One Analog Comparator (AC) with a scalable reference input
- One 10-bit 150ksps Analog to Digital Converter (ADC)
- 0.55V, 1.1V, 1.5V, 2.5V, and 4.3V selectable internal voltage references
- CRC code memory scan hardware
  - Optional automatic scan after reset
- Watchdog Timer (WDT) with Window mode and with a separate on-chip oscillator
- External interrupt on all general-purpose pins
I/O and packages
- 27 programmable I/O lines
- 32-pin VQFN 5mm x 5mm and TQFP 7mm x 7mm