embedded-processors-controllers

ATmega48PA

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This Microchip datasheet covers the ATmega48A/PA, ATmega88A/PA, ATmega168A/PA, and ATmega328/P 8-bit AVR microcontrollers. It details pin configurations for various packages including PDIP, TQFP, QFN, and UFBGA. Key features include 4 to 32KB of In-System Programmable Flash memory, up to 20 MIPS throughput at 20MHz, and an operating voltage range of 1.8V to 5.5V. The device offers six sleep modes with power consumption as low as 0.1µA in Power-down mode. Peripheral capabilities encompass multiple timers, a 10-bit ADC, USART, SPI, and I2C interfaces, along with support for capacitive touch sensing via QTouch library integration.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
supply voltage range 1.8 V 5.5 V
operating temperature -40 °C 105 °C
clock frequency 20 MHz
cpu speed 20 MHz
program memory size 4 kB
ram size 512 B
eeprom size 256 B
io count 23
adc resolution 10 bit
core size 8 bit
03 — Alternatives

Closest matches to ATmega48PA

ATmega168A 4.0× higher program memory size, 2.0× higher eeprom size, 2.0× higher ram size
PIC16LF1824 2.5× lower cpu speed, 2.0× lower ram size, 1.6× higher clock frequency
EFM8BB10F2A-A-QFN20 2.0× lower program memory size, 2.0× lower ram size, 1.6× lower clock frequency
ATmega32A 8.2× higher program memory size, 2.0× higher ram size, 1.4× lower operating temperature
ATmega8A 2.0× higher program memory size, 2.0× higher ram size, 1.4× lower operating temperature
nuvoton-tech-ms51fb9ae-t-20ccf6ff2ecfc478 4.1× higher program memory size, 2.0× higher ram size, 1.2× higher adc resolution
CH552G 4.1× higher program memory size, 2.5× higher ram size, 1.4× lower operating temperature
STM8L051F3P6 2.5× lower clock frequency, 2.0× higher program memory size, 2.0× higher ram size
04 — FAQ

Frequently asked questions

What is the ADC resolution of the ATmega48PA?

The ADC resolution is 10 bit.

What is the maximum clock frequency for the ATmega48PA?

The maximum clock frequency is 20 MHz.

What is the core size of the ATmega48PA?

The core size is 8 bit.

What is the maximum CPU speed of the ATmega48PA?

The maximum CPU speed is 20 MHz.

What is the EEPROM size of the ATmega48PA?

The EEPROM size is 256 B.

How many I/O pins does the ATmega48PA have?

The ATmega48PA has 23 I/O pins.

What is the maximum operating temperature for the ATmega48PA?

The maximum operating temperature is 105 °C.

What is the program memory size of the ATmega48PA?

The program memory size is 4 kB.

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