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 (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Core
Program Memory Size
Data RAM Size
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Maximum Clock Frequency
ADC Resolution
Number of I/Os
Supply Voltage - Min
Supply Voltage - Max
Mounting Style
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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

Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHz
Datasheet
542In Stock
Min.: 1
Mult.: 1

AVR 8 kB 1 kB QFN-28 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 FL 512B EE 1KB SRAM-20MHz 105C
Datasheet
500In 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 1.8V - 5.5V 20MHz 8KB Programmable
Datasheet
610In Stock
Min.: 1
Mult.: 1

AVR 8 kB 1 kB QFN-28 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 8KB FL 512B EE 1KB SRAM-20MHz 105C
Datasheet
485In Stock
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

Microchip Technology 8-bit Microcontrollers - MCU ATMEGA328PB 20MHZ Extd. Temp QFN
Datasheet
276In Stock
980Expected 2026/09/04
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 16KB, 512B EE 1KB SRAM, 5V
Datasheet
301In Stock
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM 20MHz 105C
Datasheet
10In 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 + 105 C ATmega168PA Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND
Datasheet
39In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 6,000

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 Reel, Cut Tape, MouseReel

Microchip Technology 8-bit Microcontrollers - MCU ATMEGA328PB QFN/MFL T&R
Datasheet
10,299Expected 2027/04/05
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 ATMEGA328PB IND TEMP QFN/MLF
Datasheet
18,751On Order
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHZ
Datasheet
4,000Expected 2026/09/28
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 2KB SRAM 20 MHZ GRN
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 6,000
Mult.: 6,000
: 6,000

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 Reel
Microchip Technology 8-bit Microcontrollers - MCU AVR 32K FLSH 2K SRAM 1KB EE-20 MHZ 105C
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 6,000
Mult.: 6,000
: 6,000

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 Reel
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 6,000
Mult.: 6,000
: 6,000

AVR VQFN-32 1.8 V 5.5 V SMD/SMT 8 bit ATmega48A Reel
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FL 256B EE 512B SRAM 20MHz 105C
Datasheet
Non-Stocked Lead-Time 8 Weeks
Min.: 2,000
Mult.: 2,000
: 2,000

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

Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FLSH 256B EE 512B SRAM-20MHz IND
Datasheet
Non-Stocked Lead-Time 8 Weeks
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 ATmega48PA Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 4KB FL 256B EE 512B SRAM 20MHz 105C
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 6,000
Mult.: 6,000
: 6,000

AVR 4 kB 512 B TQFP-32 20 MHz 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C ATmega48PA Reel
Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHz
Datasheet
Non-Stocked Lead-Time 8 Weeks
Min.: 6,000
Mult.: 6,000
: 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 ATmega88A Reel
Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FLSH 512B EE 1KB SRAM-20MHZ
Datasheet
Non-Stocked Lead-Time 8 Weeks
Min.: 6,000
Mult.: 6,000
: 6,000

AVR VQFN-28 20 MHz 1.8 V 5.5 V SMD/SMT 8 bit ATmega88PA Reel
Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FL 512B EE 1KB SRAM-20MHz 105C
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 6,000
Mult.: 6,000
: 6,000

AVR 8 kB 512 B VQFN-28 20 MHz 23 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 105 C ATmega88PA Reel

Microchip Technology 8-bit Microcontrollers - MCU AVR 8KB FL 512B EE 1KB SRAM-20MHZ IND
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 6,000
Mult.: 6,000
: 6,000

AVR 8 kB 512 B PDIP-28 20 MHz 23 I/O 1.8 V 5.5 V Through Hole 8 bit - 40 C + 105 C ATmega88PA Reel
Microchip Technology 8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz
Datasheet
Lead-Time 19 Weeks
Min.: 1
Mult.: 1

AVR 16 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 ATmega168A Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHz
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 6,000
Mult.: 6,000
: 6,000

AVR 16 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 ATmega168A Reel
Microchip Technology 8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM-20MHZ 5V
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 6,000
Mult.: 6,000
: 6,000

AVR QFN-32 1.8 V 5.5 V SMD/SMT 8 bit ATmega168PA Reel