ATSAM4SD32BB-AN

Overview

The ATSAM4SD32BB-AN is a 32-bit microcontroller from the SAM4S series, manufactured by Microchip Technology. It integrates an ARM Cortex-M4 core operating at up to 120 MHz with a 2 Kbyte cache. The device features 32 Mbytes of embedded Flash memory and 512 Kbytes of SRAM. It includes a full-speed USB 2.0 Device port, multiple communication interfaces such as SPI, I2C, and USART, and analog peripherals including 16-channel 12-bit ADCs and two 12-bit DACs. The unit operates within a voltage range of 1.62 V to 3.6 V and supports temperatures from -40°C to +105°C in a 100-pin LQFP package.

Feature Summary

• High-performance processing via ARM Cortex-M4 core with DSP instructions and hardware floating-point unit
• Large memory capacity with 32 Mbytes Flash and 512 Kbytes SRAM for complex application storage
• Integrated full-speed USB 2.0 Device interface with on-chip transceiver
• Comprehensive peripheral set including DMA channels, multiple serial controllers, and high-resolution data converters

Applications

• Industrial control systems requiring robust processing and connectivity
• USB-enabled consumer electronics and peripheral devices
• Medical equipment utilizing high-precision analog signal acquisition
• Smart energy metering and smart grid infrastructure components

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with existing design constraints regarding pinout and power supply requirements. Consult the latest datasheet for any errata or known issues affecting system stability. Confirm RoHS compliance status if required by regulatory standards in the target market.

Selection Notes

Select this component when designs demand significant program storage and data handling capabilities beyond standard mid-range MCUs. The integrated USB controller simplifies connectivity without external transceivers. Consider the 100-pin form factor for sufficient GPIO availability. Evaluate power consumption profiles against the 1.62V to 3.6V operating range to ensure efficient system battery life or thermal management.

Part Context

This part belongs to the SAM4S family, which bridges the gap between performance and cost for ARM-based applications. It shares architectural similarities with the SAM3S series but offers enhanced memory and peripheral density. The series is designed for applications needing real-time control capabilities combined with rich connectivity options.

Replacement Considerations

Direct pin-to-pin replacements may include other variants within the SAM4S family with different memory sizes, such as ATSAM4SD16BB-AN. Verify electrical characteristics and memory maps before substitution. Cross-reference with SAM3S series for legacy compatibility, noting potential differences in peripheral sets and clock speeds.