A3/A4-Series AT32UC3 AVR 32-Bit MCUs

Microchip Technology A3/A4-Series AT32UC3 AVR 32-Bit MCUs are designed for exceptionally high data throughput with Hi-Speed USB device and host, SD/SDIO card, Multi-Level-Cell (MLC) NAND flash with ECC and SDRAM interfaces. It is particularly well suited for applications like audio, biometrics, communication, USB to SD card bridges, and USB dongles. With its multi-layered AVR® databus, 128 KB on-chip SRAM split into three banks for higher throughput and multi-channel peripheral and memory-to-memory DMA controller, the A3/A4 offers outstanding data transfer rates. The device also features a 16-bit stereo Audio DAC and an entire duplex multi-channel I2S audio interface. The A3/A4 series has an optional AES crypto module capable of 128- to 256-bit AES encryption at speeds of up to 22.8MB/s.

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Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144LQFP Ind
Datasheet
300In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 800

AT32UC3A3 SMD/SMT LQFP-144 AVR 256 kB 128 kB 32 bit 10 bit 84 MHz 110 I/O 3 V 3.6 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144FFBGA Ind
Datasheet
106In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT FFBGA-144 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144FBGA Ind, w/AES Mod.
Datasheet
118In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT FFBGA-144 AVR 128 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144FBGA Ind, w/AES Mod.
Datasheet
175In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT FFBGA-144 AVR 128 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144FFBGA w/ AES Mod.
Datasheet
283In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

AT32UC3A3 SMD/SMT TBGA-144 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 32-bit Microcontrollers - MCU 64KB, 144LQFP Ind
Datasheet
97In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT LQFP-144 AVR 64 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144FFBGA w/ AES Mod.
Datasheet
88In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT FFBGA-144 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144LQFP Ind
Datasheet
346In Stock
770Expected 26/3/2026
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT LQFP-144 AVR 256 kB 128 kB 32 bit 10 bit 84 MHz 110 I/O 3 V 3.6 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144LQFP Ind, w/AES Mod.
Datasheet
120In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT LQFP-144 AVR 128 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144LQFP Ind w/ AES Mod.
Datasheet
10In Stock
Min.: 1
Mult.: 1

AT32UC3A3 SMD/SMT LQFP-144 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 256k flash Ind
Datasheet
3,985Expected 26/6/2026
Min.: 1
Mult.: 1
Reel: 4,000

AT32UC3A4 SMD/SMT VFBGA-100 AVR 256 kB 64 kB 32 bit 10 bit 84 MHz 70 I/O 1.8 V 1.8 V - 40 C + 85 C Reel, Cut Tape
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144LQFP Ind
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 800
Mult.: 800
Reel: 800

AT32UC3A3 SMD/SMT LQFP-144 AVR 128 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Reel
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144LQFP Ind
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 60
Mult.: 60

AT32UC3A3 SMD/SMT LQFP-144 AVR 128 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144FBGA Ind, w/AES Mod.
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

AT32UC3A3 SMD/SMT TBGA-144 AVR 128 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Reel
Microchip Technology 32-bit Microcontrollers - MCU 256KB, 144LQFP Ind w/ AES Mod.
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 800
Mult.: 800
Reel: 800

AT32UC3A3 SMD/SMT LQFP-144 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Reel
Microchip Technology 32-bit Microcontrollers - MCU 64KB, 144LQFP Ind
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 800
Mult.: 800
Reel: 800

AT32UC3A3 SMD/SMT LQFP-144 AVR 64 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Reel
Microchip Technology 32-bit Microcontrollers - MCU 64KB, 144FFBGA w/ AES Mod.
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 168
Mult.: 168

AT32UC3A3 SMD/SMT FFBGA-144 AVR 64 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 64k flash Ind
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 260
Mult.: 260

AT32UC3A4 VFBGA-100 AVR 32 bit 10 bit 70 I/O 1.8 V 1.8 V Tray
Microchip Technology 32-bit Microcontrollers - MCU 128KB, 144LQFP Ind, w/AES Mod.
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 800
Mult.: 800
Reel: 800

AT32UC3A3 SMD/SMT LQFP-144 AVR 128 kB 64 kB 32 bit 10 bit 66 MHz 110 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 24 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

AT32UC3A3 SMD/SMT TBGA-144 AVR 128 kB 64 kB 32 bit 10 bit 66 MHz 110 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 29 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

AT32UC3A3 SMD/SMT TBGA-144 AVR 256 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Reel
Microchip Technology 32-bit Microcontrollers - MCU 64KB, 144FFBGA Ind
Datasheet
Non-Stocked Lead-Time 24 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

AT32UC3A3 SMD/SMT TBGA-144 AVR 64 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Reel
Microchip Technology 32-bit Microcontrollers - MCU 64KB, 144FFBGA Ind
Datasheet
Non-Stocked Lead-Time 20 Weeks
Min.: 168
Mult.: 168

AT32UC3A3 SMD/SMT FFBGA-144 AVR 64 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray
Microchip Technology 32-bit Microcontrollers - MCU 64KB, 144FFBGA Ind w/ AES Mod.
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 800
Mult.: 800
Reel: 800

AT32UC3A3 SMD/SMT LQFP-144 AVR 64 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Reel
Microchip Technology 32-bit Microcontrollers - MCU 64KB, 144FFBGA Ind w/ AES Mod.
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 120
Mult.: 60

AT32UC3A3 SMD/SMT LQFP-144 AVR 64 kB 64 kB 32 bit 10 bit 66 MHz 110 I/O 1.65 V 1.95 V - 40 C + 85 C Tray