Microchip AT32UC3A3256-CTUT, 32bit AVR Microcontroller, AT32, 84MHz, 256 kB Flash, 144-Pin TFBGA

A complete system-on-chip 32-bit AVR microcontroller. It is designed for cost-sensitive embedded applications that require low power consumption, high code density and high performance. The microcontroller's MPU and fast, flexible interrupt controller support the latest real-time operating systems. Higher computation capabilities are achievable using a rich set of DSP instructions.

Features
High Performance, Low Power 32-bit Atmel ® AVR® Microcontroller
Compact Single-Cycle RISC Instruction Set Including DSP Instruction Set
Read-Modify-Write Instructions and Atomic Bit Manipulation
Performing up to 1.51DMIPS/MHz
Up to 126 DMIPS Running at 84MHz from Flash (1 Wait-State)
Up to 63 DMIPS Running at 42MHz from Flash (0 Wait-State)
MPU
Multi-Layer Bus System
High-Performance Data Transfers on Separate Buses for Increased Performance
8 Peripheral DMA Channels (PDCA) Improves Speed for Peripheral Communication