Microchip AT91SAM7SE256B-AU, 32bit ARM Microcontroller, AT91, 48MHz, 256 kB Flash, 128-Pin LQFP

Microchip's ARM®-based SAM7SE256 is a member of the SAM7SE series of flash microcontrollers based on the 32-bit ARM7TDMI RISC processor. It operates at a maximum speed of 55MHz and features 256KB of flash memory and 32KB of SRAM. The peripheral set includes an external bus interface (EBI) supporting static memory, ECC-enabled NAND, CompactFlash and SDRAM, UART, two USARTs, TWI (I2C), SPI, SSC, four 16-bit PWM controllers, three 16-bit timers, an RTT and one 8x10-bit ADC. It achieves single-cycle instruction access from embedded flash at 27 MIPS.

Microcontroller Features
Core
ARM7TDMI® ARM® Thumb® Processor 32-bit RISC Architecture
High-density 16-bit Instruction Set
EmbeddedICE™ In-circuit Emulation, Debug Communication Channel Support
Memories
128Kb, Organized in 512 Pages of 256 Bytes (Single Plane)
32Kb embedded SRAM, Single-cycle