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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
