ATUC64D4-AUR(48TQFP)

32-bit AVR microcontroller featuring 64KB Flash, 16KB SRAM and Capacitive Touch Module. All of the QTouch channels can operate in a DMA-driven mode, known as DMATouch, that allows touch and proximity detection without CPU intervention. The same feature can be used to wake up the device from low-power sleep modes upon touch or proximity. This reduces the power consumption and gives greater performance. The UC3D devices deliver 61 Dhrystone MIPS (DMIPS) at 48 MHz. The UC3D is pin compatible with the UC3B series which offer an upgrade path for UC3D requiring more perfomance.

Features

• High Performance, Low Power 32-bit AVR® Microcontroller

• Multi-Hierarchy Bus System

• Internal High-Speed Flash
– 128Kbytes, and 64Kbytes Versions
– Single-Cycle Access up to 24MHz

• Internal High-Speed SRAM, Single-Cycle Access at Full Speed

• Interrupt Controller (INTC)

• External Interrupt Controller (EIC)
• System Functions
– Power and Clock Manager 
– SleepWalking™ Power Saving Control
– Internal System RC Oscillator (RCSYS)
– 32 KHz Oscillator
– Clock Failure Detection

• Windowed Watchdog Timer (WDT)

Datasheet:- http://www.atmel.com/Images/32133s.pdf