AT91SAM9CN12B-CFU

The AT91SAM9CN12B-CFU is a 32-bit embedded microprocessor from Microchip Technology based on the ARM926EJ-S core, running at up to 400 MHz in a single-core configuration. It combines a high-performance core with extensive memory interfaces and integrated peripherals to support user interfaces, storage and high-speed connectivity.

Designed for industrial applications, the device delivers integrated connectivity and security features—such as USB host/device, SDIO, NAND and DDR/LPDDR memory support, and on-chip cryptographic accelerators—while operating across a wide temperature range for robust deployment.

Key Features

• Core & Performance ARM926EJ-S single-core processor running up to 400 MHz with separate instruction and data caches and an MMU for embedded application requirements.
• Memory & Storage Interfaces Supports LPDDR, LPDDR2, DDR2, SDR and SRAM; includes a 32-Kbyte internal SRAM and a 128-Kbyte internal ROM for bootstrap routines. External memory interface supports 8-bank DDR2/LPDDR and static memories plus an MLC/SLC NAND controller with programmable multibit ECC.
• Connectivity & Peripherals Integrated controllers include LCD and resistive touchscreen support, multiple UARTs, SPI, I2C, SDIO and two USB 2.0 full-speed interfaces (host and device) with on-chip transceivers.
• Security & Cryptography On-chip hardware accelerators support AES up to 256-bit and FIPS 180-2 compliant SHA1/SHA256, plus a True Random Number Generator (TRNG) and fuse bits for crypto key storage. The SAM9CN12 variant includes a secure Boot ROM.
• System Architecture & DMA Internal 133 MHz multi-layer bus architecture with an eight-channel DMA controller and distributed memory to sustain high peripheral and data throughput.
• Power & Low-Power Features Integrated power management with clock gating, shutdown controller and battery backup support to minimize consumption in active and standby modes.
• Package & Temperature 247-ball LFBGA (247-BGA, 10×10) surface-mount package designed for compact boards; operating temperature range −40°C to 85°C for industrial environments. RoHS compliant.

Typical Applications

• Human–Machine Interfaces — Drives LCD displays and resistive touchscreens for control panels, industrial HMIs and operator terminals.
• Secure Embedded Systems — Secure boot, AES/SHA accelerators and TRNG enable authentication and encrypted storage for secure appliances and devices.
• Connectivity Gateways — USB host/device pairs with SDIO and multiple serial interfaces support data aggregation and peripheral connectivity in embedded gateways and controllers.
• Storage and Data-Intensive Systems — NAND controller with PMECC plus support for DDR/LPDDR memory makes the device suitable for systems requiring robust flash and DRAM interfaces.
• Industrial Control — Industrial-grade temperature range and integrated power-management features suit factory automation and instrumentation control applications.

Unique Advantages

• Secure boot and hardware cryptography: Built-in AES, SHA accelerators, TRNG and fuse-backed key support simplify secure system design and help protect firmware and data.
• Broad memory flexibility: Support for LPDDR/DDR2/SDR and NAND with PMECC enables designers to choose memory solutions for performance or cost without redesigning the MPU.
• Rich peripheral integration: On-chip USB host/device, SDIO, multiple UARTs, SPI and I2C reduce external components and simplify board layout.
• Optimized data flow: Multi-layer bus and an eight-channel DMA controller sustain high-bandwidth transfers between memory and peripherals.
• Industrial readiness: −40°C to 85°C operating range and a compact 247-BGA package support deployment in space-constrained and harsh environments.

Why Choose AT91SAM9CN12B-CFU?

The AT91SAM9CN12B-CFU positions itself as a balanced embedded microprocessor delivering 400 MHz ARM926EJ-S performance combined with broad memory and peripheral integration. Its security features, including secure boot and cryptographic accelerators, alongside flexible memory support and robust DMA architecture, make it well suited for industrial and connected embedded designs that require both interface density and data integrity.

Manufactured by Microchip Technology and offered in a compact 247-BGA package with industrial temperature ratings and RoHS compliance, this MPU is appropriate for engineers seeking a scalable, integrated solution for secure human interface, storage and connectivity applications.

Request a quote or submit an inquiry to evaluate the AT91SAM9CN12B-CFU for your next embedded design and receive technical and procurement assistance tailored to your project requirements.