A0/A1-Series AT32UC3 AVR 32-Bit MCUs

Microchip Technology A0/A1-Series AT32UC3 AVR 32-Bit MCUs are designed for high data throughput, low-power consumption, and outstanding computing performance. The Microchip AVR® UC3 A0 and A1 Series feature high connectivity with USB device and host, Ethernet MAC, and SDRAM interfaces. These communication features, fast flash, and large internal SRAM suit it ideally for data-intensive applications. Microchip Technology A0/A1-Series AT32UC3 AVR 32-Bit MCUs are also excellent for applications requiring Ethernet or USB connectivity and high computing performance, including audio, biometrics, communication, industrial control, and web servers.

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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 Series
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Program Memory Size
Data RAM Size
Data Bus Width
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Supply Voltage - Min
Supply Voltage - Max
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Microchip Technology 32-bit Microcontrollers - MCU 32-bit 128KB Flash
Datasheet
261In Stock
Min.: 1
Mult.: 1

AT32UC3A1 SMD/SMT TQFP-100 AVR 128 kB 32 kB 32 bit 10 bit 66 MHz 69 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 128KB Flash
Datasheet
77In Stock
Min.: 1
Mult.: 1

AT32UC3A0 SMD/SMT LQFP-144 AVR 128 kB 32 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144LQFP 85deg. Green
Datasheet
919In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 800

AT32UC3A0 SMD/SMT LQFP-144 AVR 128 kB 32 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 256KB Flash
Datasheet
568In Stock
1,020Expected 7/30/2026
Min.: 1
Mult.: 1

AT32UC3A0 SMD/SMT LQFP-144 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 512KB Flash
Datasheet
1,502In Stock
1,260Expected 7/29/2026
Min.: 1
Mult.: 1

AT32UC3A0 SMD/SMT LQFP-144 AVR 512 kB 64 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 512KB, 100LQFP 85deg. Green
Datasheet
1,515In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

AT32UC3A1 SMD/SMT TQFP-100 AVR 512 kB 64 kB 32 bit 10 bit 66 MHz 69 I/O 1.65 V 1.95 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 256KB Flash
Datasheet
358In Stock
720Expected 7/29/2026
Min.: 1
Mult.: 1

AT32UC3A1 SMD/SMT TQFP-100 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 69 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 512KB, 144LQFP 85deg. Green
Datasheet
675In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 800

AT32UC3A0 SMD/SMT LQFP-144 AVR 512 kB 64 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 512KB, 144FFBGA Ind
Datasheet
226In Stock
Min.: 1
Mult.: 1

AT32UC3A0 SMD/SMT FFBGA-144 AVR 512 kB 64 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 32-bit 512KB Flash
Datasheet
38In Stock
Min.: 1
Mult.: 1

AT32UC3A1 SMD/SMT TQFP-100 AVR 512 kB 64 kB 32 bit 10 bit 66 MHz 69 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 100LQFP 85deg. Green
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 1,000
: 1,000

AT32UC3A1 SMD/SMT TQFP-100 AVR 128 kB 32 kB 32 bit 10 bit 66 MHz 69 I/O 1.65 V 1.95 V - 40 C + 85 C Reel
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 100LQFP 85deg. Green
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 1,000
: 1,000

AT32UC3A1 SMD/SMT TQFP-100 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 69 I/O 1.65 V 1.95 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144FBGA Ind, w/AES Mod.
Datasheet
Non-Stocked Lead-Time 17 Weeks
Min.: 2,000
Mult.: 2,000
: 2,000

AT32UC3A0 SMD/SMT FFBGA-144 AVR 128 kB 32 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Reel
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144FBGA Ind, w/AES Mod.
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 168
Mult.: 168

AT32UC3A0 SMD/SMT FFBGA-144 AVR 128 kB 32 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144LQFP 85deg. Green
Datasheet
Non-Stocked Lead-Time 13 Weeks
Min.: 800
Mult.: 800
: 800

AT32UC3A0 SMD/SMT LQFP-144 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Reel
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144FFBGA Ind
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 2,000
Mult.: 2,000
: 2,000

AT32UC3A0 SMD/SMT FFBGA-144 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Reel
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144FFBGA Ind
Datasheet
Non-Stocked Lead-Time 17 Weeks
Min.: 168
Mult.: 168

AT32UC3A0 SMD/SMT FFBGA-144 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 512KB, 144FFBGA Ind
Datasheet
Non-Stocked Lead-Time 17 Weeks
Min.: 2,000
Mult.: 2,000
: 2,000

AT32UC3A0 SMD/SMT FFBGA-144 AVR 512 kB 64 kB 32 bit 10 bit 66 MHz 109 I/O 1.65 V 1.95 V - 40 C + 85 C Reel