ATSAM4C8CB-AU

Overview

The ATSAM4C8CB-AU is a 32-bit microcontroller based on the ARM Cortex-M4 core, operating at a maximum clock frequency of 20 MHz. It features 512 kB of in-system programmable flash memory and 152 kB of static RAM. The device includes an 8-channel 10-bit analog-to-digital converter and supports multiple communication interfaces including I2C, PWM, SPI, and UART. It operates within a supply voltage range of 1.62 V to 3.6 V and functions across an industrial temperature range of -40°C to +85°C. The component is housed in a 100-pin TQFP package with 74 available input/output pins.

Feature Summary

• Integrates cryptographic acceleration capabilities for secure data processing
• Includes Memory Region Lock Box (MRLB) functionality for hardware-enforced memory protection
• Supports low-power operation modes suitable for energy-efficient embedded applications

Applications

• Secure consumer electronics requiring data integrity
• Industrial control systems needing reliable memory protection
• Embedded devices utilizing cryptographic authentication

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm pinout compatibility and functional equivalence. Ensure the ordering part number matches the required package type and temperature grade. Cross-reference the manufacturer's latest datasheet for any recent design or specification changes before finalizing procurement decisions.

Selection Notes

Select this component when a balance of moderate processing speed and high security features is required. The 20 MHz limit distinguishes it from higher-speed SAM4 variants. Consider the 152 kB RAM capacity for complex application logic. Verify that the 100-pin TQFP footprint fits the target board layout constraints.

Part Context

This unit belongs to the SAM4C series, designed for applications demanding enhanced security alongside standard microcontroller performance. It shares the Cortex-M4 architecture with other SAM4 families but offers distinct memory sizes and peripheral sets tailored for secure embedded environments.

Replacement Considerations

Consult the official SAM4C family selector guide for verified cross-references. Substitution requires matching core architecture, memory capacity, and package dimensions.