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 (JPY) 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
Qualification
Packaging
Microchip Technology 8-bit Microcontrollers - MCU AVR 32K FLSH, 1K EE 2K SRAM - 20 MHz
Datasheet
29,330In Stock
Min.: 1
Mult.: 1

AVR 32 kB 2 kB TQFP-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 32K FLSH 1K EE2K SRAM-20MHz IND
Datasheet
7,117In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 6,000

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 Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FL 512B EE 1KB SRAM-20MHz 105C
Datasheet
1,999In 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 ATmega88PA Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM 20MHz 105C
Datasheet
1,361In 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 + 105 C ATmega168PA Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 2KB SRAM 20 MHZ GRN
Datasheet
1,627In Stock
Min.: 1
Mult.: 1

AVR 32 kB 2 kB MLF-28 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 8KB FLSH 512B EE 1KB SRAM-20MHz
Datasheet
2,843In Stock
Min.: 1
Mult.: 1

AVR 8 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 ATmega88A Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz
Datasheet
5,422In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 6,000

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 Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND
Datasheet
710In Stock
Min.: 1
Mult.: 1

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 Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FL 256B EE 512B SRAM 20MHz 105C
Datasheet
703In 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 + 105 C ATmega48PA Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHz
Datasheet
1,370In Stock
Min.: 1
Mult.: 1
: 6,000

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 ATmega88A Reel, Cut Tape
Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FL 512B EE 1KB SRAM-20MHz 105C
Datasheet
3,514In 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 4KB FL 256B EE 512B SRAM 20MHz 105C
Datasheet
488In 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 + 105 C ATmega48PA Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FL 256B EE 512B SRAM 20MHz 105C
Datasheet
3,069In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 6,000

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 Reel, Cut Tape, MouseReel

Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FL 512B EE 1KB SRAM-20MHz 105C
Datasheet
5,961In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 6,000

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 Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 32K FLSH 1K EE2K SRAM-20MHz IND
Datasheet
14,245In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

AVR 32 kB 2 kB TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega328 Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 32K FLSH 2K SRAM 1KB EE-20 MHZ 105C
Datasheet
8,190In Stock
Min.: 1
Mult.: 1

AVR 32 kB 2 kB TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C ATmega328P Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 32K FLSH 2K SRAM 1KB EE-20 MHZ 105C
Datasheet
10,610In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

AVR 32 kB 2 kB TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C ATmega328P Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 32K FL 2K SRAM 1KB EE 20 MHZ GRN
Datasheet
24,068In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 6,000

AVR 32 kB 2 kB VQFN-28 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega328P Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 32K FLSH 2K SRAM 1KB EE-20 MHZ 105C
Datasheet
11,626In Stock
Min.: 1
Mult.: 1

AVR 32 kB 2 kB VQFN-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C ATmega328P Tray
Microchip Technology 8-bit Microcontrollers - MCU ATMEGA328PB 20MHZ IND TEMP
Datasheet
13,389In Stock
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 + 85 C ATmega328PB AEC-Q100 Tray
Microchip Technology 8-bit Microcontrollers - MCU 32KB In-system Flash 20MHz 1.8V-5.5V
Datasheet
10,893In Stock
Min.: 1
Mult.: 1

AVR 32 kB 2 kB TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega328P Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 32K FLSH 2K SRAM 1KB EE-20MHz IND
Datasheet
24,355In Stock
16,000Expected 9/14/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

AVR 32 kB 2 kB TQFP-32 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega328P Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 32K FL 2K SRAM 1KB EE 20 MHZ GRN
Datasheet
842In Stock
Min.: 1
Mult.: 1

AVR 32 kB 2 kB VQFN-28 20 MHz 10 bit 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega328P Tray

Microchip Technology 8-bit Microcontrollers - MCU 32KB In-system Flash 20MHz 1.8V-5.5V
Datasheet
Product Comments
10,472In 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 + 85 C ATmega328P Tube

Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHz
Datasheet
2,096In Stock
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 ATmega88A Tube