AT91SAM9CN12B-CU

Microprocessors Overview

The AT91SAM9CN12B-CU is a microprocessor from the SAM9CN12 series, featuring an ARM926EJ-S core with a maximum clock frequency of 400 MHz. It utilizes a 32-bit data bus and is housed in an LFBGA-217 package. The device includes 16 kB instruction cache, 16 kB data cache, 32 kB SRAM, and 128 kB ROM. Operating voltage is 1 V, with I/O voltages of 1.8 V and 3.3 V. It supports interfaces including 2-Wire, Serial, UART, and USB, offering 105 I/O pins and two timers/counters within an industrial temperature range of -40°C to +85°C.

Microprocessors Feature Summary

• Integrates ARM926EJ-S processor core for embedded control applications
• Includes hardware cryptographic acceleration capabilities
• Supports multiple communication protocols via integrated serial interfaces
• Features low-power operation with dedicated voltage domains

Microprocessors Applications

• Industrial automation controllers
• Secure embedded systems requiring cryptographic functions
• Human-machine interface (HMI) devices
• Smart metering equipment

Microprocessors Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type, temperature grade, and RoHS compliance status. Ensure the ordering part number matches the required lead time and availability constraints. Confirm that the LFBGA-217 footprint aligns with the target PCB design specifications before finalizing procurement orders.

Microprocessors Selection Notes

Select this component when an ARM9-based MPU with integrated security features is required. Compare storage capacities and interface options against alternative SAM9 series variants. Evaluate thermal management requirements for the LFBGA-217 package within the specified operating temperature range. Verify compatibility with existing software frameworks and peripheral drivers.

Microprocessors Part Context

This microprocessor belongs to the SAM9CN family designed for cost-sensitive applications with enhanced security. It complements other ARM9-based solutions by providing integrated cryptographic modules. The device targets markets needing reliable processing power with reduced bill-of-materials complexity through integrated peripherals and memory.

Microprocessors Replacement Considerations

Consult official substitution lists for pin-compatible or functionally equivalent parts within the SAM9 series. Verify electrical characteristics and software compatibility before replacing the component.