8-bit Microcontrollers - MCU

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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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Part #

8-bit Microcontrollers - MCU ATMEGA328PB 20MHZ Extd. Temp

ATMEGA328PB-AN
Microchip Technology
1: $1.65
4,573In Stock
5,750Expected 11/08/2026

Mfr. Part No.
ATMEGA328PB-AN

Mouser Part No
556-ATMEGA328PB-AN

Microchip Technology

8-bit Microcontrollers - MCU ATMEGA328PB 20MHZ Extd. Temp

Learn More

Datasheet

4,573In Stock

5,750Expected 11/08/2026

$1.65

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

8-bit Microcontrollers - MCU ATMEGA328PB IND TEMP T&R

ATMEGA328PB-AUR
Microchip Technology
1: $1.70
8,742In Stock

Mfr. Part No.
ATMEGA328PB-AUR

Mouser Part No
556-ATMEGA328PB-AUR

Microchip Technology

8-bit Microcontrollers - MCU ATMEGA328PB IND TEMP T&R

Learn More

Datasheet

8,742In Stock

Cut Tape

$1.70

Reel

$1.70

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

8-bit Microcontrollers - MCU ATMEGA328PB QFN/MFL T&R

ATMEGA328PB-MNR
Microchip Technology
1: $1.65
4,769In Stock

Mfr. Part No.
ATMEGA328PB-MNR

Mouser Part No
556-ATMEGA328PB-MNR

Microchip Technology

8-bit Microcontrollers - MCU ATMEGA328PB QFN/MFL T&R

Learn More

Datasheet

4,769In Stock

Cut Tape

$1.65

Reel

$1.65

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

8-bit Microcontrollers - MCU ATMEGA328PB IND TEMP QFN/MLF

ATMEGA328PB-MU
Microchip Technology
1: $1.52
1,682In Stock
12,740On Order

Mfr. Part No.
ATMEGA328PB-MU

Mouser Part No
556-ATMEGA328PB-MU

Microchip Technology

8-bit Microcontrollers - MCU ATMEGA328PB IND TEMP QFN/MLF

Learn More

Datasheet

1,682In Stock

12,740On Order

$1.52

Min.: 1
Mult.: 1

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

Tray

8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHZ

ATMEGA88PA-AUR
Microchip Technology
1: $1.92
1,773In Stock

Mfr. Part No.
ATMEGA88PA-AUR

Mouser Part No
556-ATMEGA88PA-AUR

Microchip Technology

8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHZ

Learn More

Datasheet

1,773In Stock

Cut Tape

$1.92

Reel

$1.92

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

ATmega88PA

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz

ATMEGA168A-AU
Microchip Technology
1: $2.19
2,559In Stock
NRND

Mfr. Part No.
ATMEGA168A-AU

Mouser Part No
556-ATMEGA168A-AU

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz

Learn More

Datasheet

2,559In Stock

$2.19

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

8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM 20MHz 105C

ATMEGA168PA-AN
Microchip Technology
1: $2.23
274In Stock
NRND

Mfr. Part No.
ATMEGA168PA-AN

Mouser Part No
556-ATMEGA168PA-AN

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM 20MHz 105C

Learn More

Datasheet

274In Stock

$2.23

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

+ 105 C

ATmega168PA

Tray

8-bit Microcontrollers - MCU 16KB FLASH 512B EE 1KB SRAM - 20 MHz

ATMEGA168PA-AU
Microchip Technology
1: $2.23
2,216In Stock
NRND

Mfr. Part No.
ATMEGA168PA-AU

Mouser Part No
556-ATMEGA168PA-AU

NRND

Microchip Technology

8-bit Microcontrollers - MCU 16KB FLASH 512B EE 1KB SRAM - 20 MHz

Learn More

Datasheet

2,216In Stock

$2.23

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

8-bit Microcontrollers - MCU 16KB FLASH 512B EE 1KB SRAM - 20 MHz

ATMEGA168PA-AUR
Microchip Technology
1: $2.36
979In Stock
4,000Expected 24/07/2026
NRND

Mfr. Part No.
ATMEGA168PA-AUR

Mouser Part No
556-ATMEGA168PA-AUR

NRND

Microchip Technology

8-bit Microcontrollers - MCU 16KB FLASH 512B EE 1KB SRAM - 20 MHz

Learn More

Datasheet

979In Stock

4,000Expected 24/07/2026

Cut Tape

$2.36

Reel

$2.36

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

8-bit Microcontrollers - MCU AVR 16KB, 512B EE 1KB SRAM, 5V

ATMEGA168PA-MMH
Microchip Technology
1: $2.09
462In Stock
NRND

Mfr. Part No.
ATMEGA168PA-MMH

Mouser Part No
556-ATMEGA168PA-MMH

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 16KB, 512B EE 1KB SRAM, 5V

Learn More

Datasheet

462In Stock

$2.09

Min.: 1
Mult.: 1

AVR

16 kB

1 kB

MLF-28

20 MHz

10 bit

23 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

ATmega168PA

Tray

8-bit Microcontrollers - MCU 16K Flsh 500B EEPROM 1K SRAM 23 IO Pins

ATMEGA168PA-PU
Microchip Technology
1: $2.95
234In Stock
NRND

Mfr. Part No.
ATMEGA168PA-PU

Mouser Part No
556-ATMEGA168PA-PU

NRND

Microchip Technology

8-bit Microcontrollers - MCU 16K Flsh 500B EEPROM 1K SRAM 23 IO Pins

Learn More

Datasheet

234In Stock

$2.95

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

8-bit Microcontrollers - MCU AVR 32K FLSH 1K EE2K SRAM-20MHz IND

ATMEGA328-MU
Microchip Technology
1: $2.42
224In Stock
NRND

Mfr. Part No.
ATMEGA328-MU

Mouser Part No
556-ATMEGA328-MU

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 32K FLSH 1K EE2K SRAM-20MHz IND

Learn More

Datasheet

224In Stock

$2.42

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

8-bit Microcontrollers - MCU 32KB In-system Flash 20MHz 1.8V-5.5V

ATMEGA328P-PU
Microchip Technology
1: $2.89
3,994In Stock
10,038Expected 06/07/2026
NRND

Mfr. Part No.
ATMEGA328P-PU

Mouser Part No
556-ATMEGA328P-PU

NRND

Microchip Technology

8-bit Microcontrollers - MCU 32KB In-system Flash 20MHz 1.8V-5.5V

Learn More

Datasheet

Product Comments

3,994In Stock

10,038Expected 06/07/2026

$2.89

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

+ 85 C

ATmega328P

Tube

8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND

ATMEGA48A-AU
Microchip Technology
1: $1.81
889In Stock
NRND

Mfr. Part No.
ATMEGA48A-AU

Mouser Part No
556-ATMEGA48A-AU

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND

Learn More

Datasheet

889In Stock

$1.81

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

8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND

ATMEGA48A-AUR
Microchip Technology
1: $1.99
2,009In Stock
NRND

Mfr. Part No.
ATMEGA48A-AUR

Mouser Part No
556-ATMEGA48A-AUR

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND

Learn More

Datasheet

2,009In Stock

Cut Tape

$1.99

Reel

$1.99

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

8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND

ATMEGA48A-MMHR
Microchip Technology
1: $1.89
1,236In Stock
NRND

Mfr. Part No.
ATMEGA48A-MMHR

Mouser Part No
556-ATMEGA48A-MMHR

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND

Learn More

Datasheet

1,236In Stock

Cut Tape

$1.89

Reel

$1.89

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

8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND

ATMEGA48A-MU
Microchip Technology
1: $1.40
1,112In Stock
NRND

Mfr. Part No.
ATMEGA48A-MU

Mouser Part No
556-ATMEGA48A-MU

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND

Learn More

Datasheet

1,112In Stock

$1.40

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

8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHz

ATMEGA88A-AU
Microchip Technology
1: $1.97
1,673In Stock
NRND

Mfr. Part No.
ATMEGA88A-AU

Mouser Part No
556-ATMEGA88A-AU

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHz

Learn More

Datasheet

1,673In Stock

$1.97

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

8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHz

ATMEGA88A-AUR
Microchip Technology
1: $2.11
1,892In Stock
NRND

Mfr. Part No.
ATMEGA88A-AUR

Mouser Part No
556-ATMEGA88A-AUR

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHz

Learn More

Datasheet

1,892In Stock

Cut Tape

$2.11

Reel

$2.11

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

8-bit Microcontrollers - MCU AVR 8KB FL 512B EE 1KB SRAM-20MHz 105C

ATMEGA88PA-MMN
Microchip Technology
1: $2.26
649In Stock
NRND

Mfr. Part No.
ATMEGA88PA-MMN

Mouser Part No
556-ATMEGA88PA-MMN

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 8KB FL 512B EE 1KB SRAM-20MHz 105C

Learn More

Datasheet

649In Stock

$2.26

Min.: 1
Mult.: 1

AVR

8 kB

1 kB

VQFN-28

20 MHz

10 bit

23 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

ATmega88PA

Tray

8-bit Microcontrollers - MCU 1.8V - 5.5V 20MHz 8KB Programmable

ATMEGA88PA-PU
Microchip Technology
1: $2.60
3,023In Stock
NRND

Mfr. Part No.
ATMEGA88PA-PU

Mouser Part No
556-ATMEGA88PA-PU

NRND

Microchip Technology

8-bit Microcontrollers - MCU 1.8V - 5.5V 20MHz 8KB Programmable

Learn More

Datasheet

3,023In Stock

$2.60

Min.: 1
Mult.: 1

AVR

8 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

ATmega88PA

Tube

8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz

ATMEGA168A-MU
Microchip Technology
1: $2.15
213In Stock
NRND

Mfr. Part No.
ATMEGA168A-MU

Mouser Part No
556-ATMEGA168A-MU

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz

Learn More

Datasheet

213In Stock

$2.15

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

8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz

ATMEGA168A-PU
Microchip Technology
1: $2.94
1,727In Stock
NRND

Mfr. Part No.
ATMEGA168A-PU

Mouser Part No
556-ATMEGA168A-PU

NRND

Microchip Technology

8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz

Learn More

Datasheet

1,727In Stock

$2.94

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

8-bit Microcontrollers - MCU ATMEGA328PB 20MHZ Extd. Temp QFN

ATMEGA328PB-MN
Microchip Technology
1: $1.56
928In Stock
980Expected 10/12/2026

Mfr. Part No.
ATMEGA328PB-MN

Mouser Part No
556-ATMEGA328PB-MN

Microchip Technology

8-bit Microcontrollers - MCU ATMEGA328PB 20MHZ Extd. Temp QFN

Learn More

Datasheet

928In Stock

980Expected 10/12/2026

$1.56

Min.: 1
Mult.: 1

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

Tray

8-bit Microcontrollers - MCU 1.8V - 5.5V 20MHz 8KB Programmable

ATMEGA88PA-AU
Microchip Technology
1: $1.80
242In Stock
2,500Expected 06/07/2026

Mfr. Part No.
ATMEGA88PA-AU

Mouser Part No
556-ATMEGA88PA-AU

Microchip Technology

8-bit Microcontrollers - MCU 1.8V - 5.5V 20MHz 8KB Programmable

Learn More

Datasheet

242In Stock

2,500Expected 06/07/2026

$1.80

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

ATmega328 8-Bit AVR MCUs

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