embedded processors controllers

ATmega168A

Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.

00 — Overview

What the ATmega168A does

The ATmega48/88/168/328 family comprises 8-bit microcontrollers with 4, 8, 16, or 32KBytes of In-System Programmable Flash. These devices feature an Advanced RISC architecture with 32 general-purpose registers and operate at speeds up to 20 MHz. Key specifications include a 1.8 to 5.5V operating voltage, 10,000 Flash write/erase cycles, and 100,000 EEPROM write cycles. The parts offer 6 to 8 analog-to-digital converter channels, multiple timer/counter units, and support for I2C and SPI interfaces. Available in 28-pin PDIP, 32-lead TQFP, and various QFN packages, they support temperature ranges from -40°C to 85°C. These microcontrollers are typically used in embedded control applications requiring low power consumption and high performance.

Next step
Start building with ATmega168A → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.
01 — Key specifications

Datasheet parameters

Datasheet parameters for ATmega168A
ParameterMinTypMaxConditionsSource
supply voltage range 1.8 V — 5.5 V Microchip datasheet, p. 1
operating temperature -40 °C — 85 °C Microchip datasheet, p. 1
clock frequency — 20 MHz — Microchip datasheet, p. 1
cpu speed — 20 MHz — Microchip datasheet, p. 1
program memory size — 15.6 KB — flash Microchip datasheet, p. 6 — Table 2-1. Memory Size Summary
eeprom size — 512 B — eeprom Microchip datasheet, p. 6 — Table 2-1. Memory Size Summary
io count — 23 — Microchip datasheet, p. 1
adc resolution — 10 bit — Microchip datasheet, p. 1
core size — 8 bit — Microchip datasheet, p. 1
02 — Alternatives

Closest matches to ATmega168A

ATmega328P 2.0× higher program memory size, 2.0× higher ram size, 2.0× higher eeprom size
ATmega48PA 4.0× lower program memory size, 2.0× lower eeprom size, 2.0× lower ram size
PIC16LF1824 3.9× lower ram size, 2.0× lower eeprom size, 2.0× lower program memory size
ATmega8A 2.0× lower program memory size, 1.2× lower clock frequency, 1.2× lower cpu speed
CC1110F16RHHR 2.0× higher ram size, 1.3× lower supply voltage range, 1.3× higher clock frequency
CH552G 1.3× higher ram size, 1.2× lower adc resolution, 1.2× higher clock frequency
MS51FB9AE-T 1.4× higher operating temperature, 1.2× higher adc resolution, 1.2× higher clock frequency
ATtiny1616 8.0× lower clock frequency, 2.0× higher ram size, 1.4× higher operating temperature
03 — FAQ

Frequently asked questions

What is the ADC resolution of the ATmega168A?

The ADC resolution is 10 bit.

What is the maximum clock frequency for the ATmega168A?

The maximum clock frequency is 20 MHz.

What is the core size of the ATmega168A?

The core size is 8 bit.

What is the maximum CPU speed of the ATmega168A?

The maximum CPU speed is 20 MHz.

What is the EEPROM size?

The EEPROM size is 512 B under the EEPROM condition.

How many I/O pins does the ATmega168A have?

The ATmega168A has 23 I/O pins.

What is the maximum operating temperature for the ATmega168A?

The maximum operating temperature is 85 °C.

What is the program memory size of the ATmega168A?

The program memory size is 15.6 KB (flash).

What is the maximum supply voltage for the ATmega168A?

The maximum supply voltage is 5.5 V.

Design help What do I need around the ATmega168A? →