Manufacturer Part Number

ATSAM4SD32BA-AN

Description

ARM Cortex-M4 based 32-bit microcontroller with single core running at 120MHz. Has 2MB flash memory for program storage and 160KB RAM. Comes in a 64-pin LQFP package measuring 10x10 mm. Supports multiple communication interfaces including I2C, SPI, UART, USB, IrDA, and memory card interface. Includes peripherals like brown-out detection, DMA controller, PWM, watchdog timer, and power-on reset. Operates on low voltage from 1.62V to 3.6V. Suitable for embedded applications requiring real-time control and high performance.

Specifications

Core: ARM Cortex-M4, 32-bit single-core

Clock speed: 120MHz

Flash Memory: 2MB (2M x 8)

RAM: 160KB (160K x 8)

I/O Pins: 47

Voltage supply: 1.62V to 3.6V

Analog to Digital Converters: 11 channels, 12-bit resolution

Digital to Analog Converters: 2 channels, 12-bit resolution

Operating Temperature: -40°C to 105°C

Package: 64-LQFP, 10x10 mm

Oscillator: Internal

Device Structure

The device integrates a 32-bit ARM Cortex-M4 microcontroller core with embedded flash memory, SRAM, multiple serial communication modules, analog converters, and advanced peripheral control units. The microcontroller core includes DSP instructions and an FPU for enhanced computation. Memory is arranged with separate flash and SRAM blocks. The package uses surface-mount technology in a 64-pin low-profile quad flat pack.

Performance Characteristics

High-performance clock of 120MHz allows fast data processing and real-time control. Embedded flash memory size of 2MB supports large application code. RAM of 160KB supports data buffers and stack usage. The multiple communication protocols enable flexible connectivity options. Analog to Digital Converters with 12-bit resolution ensure precise analog signal measurement. Operating voltage from 1.62V to 3.6V enables low power usage. Temperature range down to -40°C supports industrial environments.

Application Environments

Used in embedded systems requiring complex control and communication, such as industrial automation, consumer electronics, motor control, IoT devices, medical equipment, and communication devices. Suitable for applications requiring reliability over wide temperature ranges and low power consumption.

Selection Guidelines

Choose this microcontroller when your application needs a high clock speed (120MHz), large flash memory (2MB), significant RAM (160KB), and multiple connectivity interfaces. Verify requirement of peripherals such as PWM, DMA, watchdog timer, and ADC/DAC channels. Consider the package size and pin count to match your PCB design. Check voltage supply compatibility and ambient operating temperature for your use case.

Usage Considerations

Ensure proper power supply voltage within 1.62V to 3.6V. Use appropriate decoupling capacitors and oscillator configurations. Consider the moisture sensitivity level 3 for handling and storage to avoid damage during soldering. Make use of brown-out detection and watchdog timer features to improve system stability. Verify firmware compatibility with the ARM Cortex-M4 architecture and development toolchains. Plan pin assignments carefully for all required peripherals.

Potential Equivalent/Replacement Models

Equivalent model available: ATSAM4SD32BA-AU

If alternatives or other substitutes are needed beyond the ATSAM4SD32BA-AU, please contact the Ariat-Tech sales team via our website for detailed support and availability of replacement models.

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