ATmega328 8-Bit AVR MCUs

Microchip Technology ATmega328 8-Bit AVR MCUs are low-power, CMOS 8-bit microcontrollers based on the AVR® enhanced RISC architecture. The devices execute instructions in a single clock cycle to achieve CPU throughput approaching one million instructions per second (MIPS) per megahertz. This allows for optimizing power consumption versus processing speed.

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Description Datasheet Availability Pricing (CHF) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Core
Program Memory Size
Data RAM Size
Package/Case
Maximum Clock Frequency
ADC Resolution
Number of I/Os
Supply Voltage - Min
Supply Voltage - Max
Mounting Style
Data Bus Width
Minimum Operating Temperature
Maximum Operating Temperature
Series
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Packaging
Microchip Technology 8-bit Microcontrollers - MCU ATMEGA328PB Extend TEMP T&R
Datasheet
13’173In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2’000

AVR 32 kB 2 kB TQFP-32 20 MHz 10 bit 27 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C ATmega328PB AEC-Q100 Reel, Cut Tape, MouseReel

Microchip Technology 8-bit Microcontrollers - MCU ATMEGA328PB IND TEMP QFN T&R
Datasheet
19’576In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 6’000

AVR 32 kB 2 kB QFN-32 20 MHz 10 bit 27 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega328PB AEC-Q100 Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU 16KB FLASH 512B EE 1KB SRAM - 20 MHz
Datasheet
2’109In Stock
Min.: 1
Mult.: 1

AVR 16 kB 1 kB TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega168PA Tray
Microchip Technology 8-bit Microcontrollers - MCU ATMEGA328PB IND TEMP T&R
Datasheet
6’926In Stock
12’000Expected 10/5/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2’000

AVR 32 kB 2 kB TQFP-32 20 MHz 10 bit 27 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega328PB AEC-Q100 Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU 1.8V - 5.5V 20MHz 8KB Programmable
Datasheet
4’269In Stock
Min.: 1
Mult.: 1

AVR 8 kB 1 kB TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega88PA Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz
Datasheet
213In Stock
Min.: 1
Mult.: 1

AVR 16 kB 1 kB QFN-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega168A Tray

Microchip Technology 8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz
Datasheet
844In Stock
3’136Expected 8/25/2026
Min.: 1
Mult.: 1

AVR 16 kB 1 kB PDIP-28 20 MHz 10 bit 23 I/O 1.8 V 5.5 V Through Hole 8 bit - 40 C + 85 C ATmega168A Tube
Microchip Technology 8-bit Microcontrollers - MCU AVR 32K FLSH 1K EE2K SRAM-20MHz IND
Datasheet
224In Stock
Min.: 1
Mult.: 1

AVR 32 kB 2 kB MLF-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega328 Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND
Datasheet
1’998In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2’000

AVR 4 kB 512 B TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega48A Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND
Datasheet
1’236In Stock
Min.: 1
Mult.: 1
: 6’000

AVR 4 kB 512 B VQFN-28 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega48A Reel, Cut Tape
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND
Datasheet
1’112In Stock
Min.: 1
Mult.: 1

AVR 4 kB 512 B QFN-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega48A Tray

Microchip Technology 8-bit Microcontrollers - MCU AVR 4K FLASH 256B EE 20MHZ IND TEMP 1.8V
Datasheet
549In Stock
Min.: 1
Mult.: 1

AVR 4 kB 512 B QFN-28 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega48PA Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHz
Datasheet
1’338In Stock
Min.: 1
Mult.: 1

AVR 8 kB 1 kB TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega88A Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHz
Datasheet
1’980In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2’000

AVR 8 kB 1 kB TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega88A Reel, Cut Tape, MouseReel

Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FL 512B EE 1KB SRAM-20MHz 105C
Datasheet
507In Stock
Min.: 1
Mult.: 1

AVR 8 kB 1 kB VQFN-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega88PA Tray

Microchip Technology 8-bit Microcontrollers - MCU ATMEGA328PB QFN/MFL T&R
Datasheet
4’706In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 6’000

AVR 32 kB 2 kB QFN-32 20 MHz 10 bit 27 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C ATmega328PB AEC-Q100 Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz
Datasheet
4’339In Stock
Min.: 1
Mult.: 1

AVR 16 kB 1 kB TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega168A Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz
Datasheet
2’018In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2’000

AVR 16 kB 1 kB TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega168A Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU 16KB FLASH 512B EE 1KB SRAM - 20 MHz
Datasheet
3’959In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2’000

AVR 16 kB 1 kB TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega168PA Reel, Cut Tape, MouseReel

Microchip Technology 8-bit Microcontrollers - MCU 16K Flsh 500B EEPROM 1K SRAM 23 IO Pins
Datasheet
209In Stock
Min.: 1
Mult.: 1

AVR 16 kB 1 kB PDIP-28 20 MHz 10 bit 23 I/O 1.8 V 5.5 V Through Hole 8 bit - 40 C + 85 C ATmega168PA Tube
Microchip Technology 8-bit Microcontrollers - MCU ATMEGA328PB 20MHZ Extd. Temp
Datasheet
580In Stock
12’000On Order
Min.: 1
Mult.: 1

AVR 32 kB 2 kB TQFP-32 20 MHz 10 bit 27 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C ATmega328PB AEC-Q100 Tray

Microchip Technology 8-bit Microcontrollers - MCU AVR 32K FLSH 2K SRAM 1KB EE-20 MHZ 105C
Datasheet
410In Stock
Min.: 1
Mult.: 1

AVR 32 kB 2 kB PDIP-28 20 MHz 10 bit 23 I/O 1.8 V 5.5 V Through Hole 8 bit - 40 C + 105 C ATmega328P Tube
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND
Datasheet
637In Stock
Min.: 1
Mult.: 1

AVR 4 kB 512 B TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega48A Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FLASH 20 MHZ,IND TEMP
Datasheet
834In Stock
Min.: 1
Mult.: 1

AVR 4 kB 512 B TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega48PA Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FL 256B EE 512B SRAM 20MHz 105C
Datasheet
18In Stock
Min.: 1
Mult.: 1

AVR 4 kB 512 B QFN-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C ATmega48PA Tray