The Microchip's ARM-based SAM7XC512 is a member of the Microchip SAM7XC series of crypto microcontrollers based on the 32-bit ARM7TDMI processor. It operates at a maximum speed of 55MHz and features 512KB of flash memory and 32KB of SRAM.

Incorporates ARM7TDMI ARM Thumb Processor
High-performance 32-bit RISC Architecture
High-density 16-bit Instruction Set
EmbeddedICE In-circuit Emulation, Debug Communication Channel Support
Internal High-speed Flash
512Kb (SAM7XC512): Two Banks of 1024 Pages of 256 Bytes (Dual Plane)
256Kb (SAM7XC256): 1024 Pages of 256 Bytes (Single Plane)
128Kb (SAM7XC128): 512 Pages of 256 Bytes (Single Plane)
Single Cycle Access at Up to 30MHz in Worst Case Conditions
Prefetch Buffer Optimizing Thumb Instruction Execution at Maximum Speed
6ms page programming time Including Page Auto-erase
15ms erase time
10,000 Write Cycles, 10-year Data Retention Capability,
Sector Lock Capabilities, Flash Security Bit
Fast Flash Programming Interface for High Volume Production