ATSAM4SD32BA-UUR

Overview

The ATSAM4SD32BA-UUR is a 32-bit microcontroller from the SAM4S series, built on an ARM Cortex-M4 core operating at 120 MHz. It features dual-bank Flash memory totaling 2 MB and 160 KB of SRAM. The device includes a 2 KB cache and supports up to 79 I/O pins. Connectivity options include FS USB Device, HS SDIO/SD/MMC, three SPIs, two I2Cs, I2S, two USARTs, and two UARTs. Analog peripherals consist of a 16-channel 12-bit ADC, two 12-bit DACs, an analog comparator, and a temperature sensor. System controls feature a 1.8V regulator, power-on reset, brown-out detection, watchdog timer, real-time timer, RTC, and CRC unit.

Feature Summary

• Dual-bank Flash architecture with optional boot ROM support for enhanced code protection and secure reconditioning.
• Multi-layer AHB bus matrix with 21-channel DMA and distributed memory for high data rate communication.
• Native support for Microchip QTouch capacitive touch technology for buttons, sliders, and wheels.
• Integrated hardware security features including 128-bit ID, scrambled external bus interface, and memory integrity checks.

Applications

• Consumer goods and toys
• Industrial control systems
• Metering applications
• Medical devices
• Test and measurement equipment

Procurement Notes

Verify package type and pinout compatibility during procurement. Confirm that the WLCSP package meets your PCB assembly requirements. Ensure ordering suffixes match specific temperature ranges or packaging preferences if different from standard industrial grade. Cross-reference datasheet revision history for any errata affecting implementation.

Selection Notes

Select this part for applications requiring high memory density and robust connectivity within a compact footprint. Consider the dual-bank Flash feature if code protection and secure updates are critical. Evaluate power consumption metrics against system requirements, noting the low standby current capabilities. Ensure development tools like Atmel Studio and QTouch libraries are integrated into the design workflow.

Part Context

This component belongs to the SAM4S family, which offers scalability in performance and memory. It provides pin-to-pin compatibility with SAM4N, SAM3S, SAM3N, and SAM7S devices, facilitating migration. The series emphasizes power efficiency alongside high performance, making it suitable for battery-operated and space-constrained designs.

Replacement Considerations

ATSAM4SD32CA-CFU

FAQ

What is the maximum operating frequency of the ATSAM4SD32BA-UUR?

The device operates at a maximum frequency of 120 MHz.

Does the ATSAM4SD32BA-UUR support capacitive touch interfaces?

Yes, it offers native support for Microchip's QTouch technology for implementing buttons, sliders, and wheels.

How much SRAM does the ATSAM4SD32BA-UUR contain?

It contains 160 KB of SRAM.