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ATSAM3S2CA-AUR
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Product Detailed Parameters
- Description：IC MCU 32BIT 128KB FLASH 100LQFP
- Series：SAM3S
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Core Processor：ARM® Cortex®-M3
- Core Size：32-Bit Single-Core
- Speed：64MHz
- Connectivity：EBI/EMI, I2C, Memory Card, SPI, SSC, UART/USART, USB
- Peripherals：Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O：79
- Program Memory Size：128KB (128K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：32K x 8
- Voltage - Supply (Vcc/Vdd)：1.62V ~ 3.6V
- Data Converters：A/D 15x10/12b; D/A 2x12b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：100-LQFP (14x14)
- Package / Case：100-LQFP
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Overview
The ATSAM3S2CA-AUR is a 32-bit microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 64 MHz. It features 128 KB of embedded Flash memory and 32 KB of SRAM. The device includes an internal oscillator and supports a supply voltage range of 1.62 V to 3.6 V. Connectivity options include USB, SPI, I2C, USART, SSC, MMC, and EBI/EMI interfaces. Analog capabilities consist of 15 channels of 10-bit ADC and two 12-bit DACs. It provides 79 general-purpose I/O pins and is housed in a 100-LQFP package with an operating temperature range of -40°C to 85°C.
Feature Summary
- Integrates an ARM Cortex-M3 processor with hardware floating-point support for efficient code execution.
- Includes multiple high-speed communication peripherals such as USB Full-Speed controller and SDIO/MMC interface.
- Features built-in DMA controllers to reduce CPU load during data transfers between peripherals and memory.
Applications
- Industrial control systems requiring robust peripheral connectivity
- Consumer electronics utilizing USB communication interfaces
- Medical devices needing precise analog signal acquisition via ADC
Procurement Notes
Verify the specific suffix 'AUR' indicates tape and reel packaging when ordering. Confirm that the component meets RoHS compliance requirements for your region. Ensure the design accounts for the 100-pin LQFP footprint dimensions and thermal dissipation characteristics specified in the datasheet.
Selection Notes
Select this model if 128 KB of program memory and 32 KB of RAM are sufficient for the application logic. Consider the 100-pin package size relative to board space constraints. Verify that the required number of USB and analog channels aligns with the available pin count and peripheral configuration.
Part Context
This part belongs to the Microchip SAM3S series, which targets cost-sensitive applications requiring ARM Cortex-M3 performance. It serves as a bridge between legacy 8/16-bit MCUs and higher-performance 32-bit solutions, offering pin compatibility with older SAM7S families in certain packages.
Replacement Considerations
The ATSAM3S2BA-AUR offers identical specifications but utilizes a 64-pin LQFP package, requiring PCB layout changes. The ATSAM3S2AA-AU provides similar functionality in a 48-pin package with reduced I/O count. Cross-package replacements require verification of pin mapping and physical fit.
