AT91SAM9CN12B-CFU

Microprocessors Overview

The AT91SAM9CN12B-CFU is a microprocessor IC from the SAM9CN series, manufactured by Microchip Technology. It integrates an ARM926EJ-S core with a single 32-bit data bus width and operates at a maximum clock frequency of 400 MHz. The device utilizes a 217-pin LFBGA package for surface mount installation. Internal storage includes 16 kB instruction cache, 16 kB data cache, 32 kB RAM, and 128 kB ROM. It supports I/O voltages of 1.8 V and 3.3 V, functions within a temperature range of -40°C to +85°C, and provides 105 general-purpose I/O lines.

Microprocessors Feature Summary

• Integrates ARM926EJ-S processor core for embedded control applications
• Includes hardware cryptographic acceleration capabilities
• Supports multiple interface protocols including USB, UART, SPI, and I2C
• Features integrated memory components such as SRAM and ROM

Microprocessors Applications

• Industrial automation controllers
• Human-machine interface (HMI) displays
• Secure embedded communication devices
• Consumer electronics requiring cryptographic security

Microprocessors Procurement Notes

Verify the specific suffix 'CFU' against official Microchip documentation to confirm the exact package type, temperature grade, and lead-free status. Ensure compatibility with required voltage levels and interface configurations before integration. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current production status.

Microprocessors Selection Notes

Select this component when an ARM9-based MPU with integrated security features is required. Consider the 400 MHz processing speed and available I/O count for system complexity. Evaluate the LFBGA-217 footprint requirements during PCB layout. Confirm that the operating temperature range meets environmental specifications.

Microprocessors Part Context

This microprocessor belongs to the AT91SAM9 family, designed for cost-effective embedded solutions. The SAM9CN series specifically emphasizes security features alongside standard processing capabilities. It serves as a bridge between high-performance application processors and simpler microcontrollers in complex systems.

Microprocessors Replacement Considerations

Consult Microchip datasheets for direct pin-compatible or functionally equivalent alternatives within the SAM9 series. Verify electrical characteristics and software compatibility if substituting with other ARM9-based MPUs.