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MCU 32Bit SAM3S ARM Cortex M3 RISC 64KB Flash 1.8V/3.3V 64Pin LQFP

  • Package/Case :
  • QFP-64
  • Product Categories :
  • ARM Microcontrollers - MCU
  • RoHs Status:
  • Green
  • In-stock:
  • 1252


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ATSAM3S1BA-AU Product Details

The SAM3S1B is a member of the Atmel® SAM3S series microcontrollers based on the high-performance 32-bit ARM® Cortex™-M3 RISC processor. It operates at a maximum speed of 64MHz and features 64KB of flash and 16KB of SRAM. The extensive peripheral set includes a FS USB Device port with embedded transceiver, a HS multimedia card interface for SDIO/SD/MMC, two USARTs, two UARTs, two TWIs, three SPI, I2S, PWM timer, three 16-bit timers, RTC, 10x12-bit ADC, 2x12-bit DAC and an analog comparator. The SAM3S1B is ready for capacitive touch thanks to the QTouch® library, offering an easy way to implement buttons, wheels and sliders. The parallel data capture mode on the PIOs collects data from external devices not compliant with standard memory read protocols, such as low-cost image sensors. The data is then transferred to memory by DMA offloading the CPU. It operates from 1.62V to 3.6V and is available in 64-pin QFP and QFN packages. The SAM3S1B is pin-to-pin compatible with the SAM3N1B and SAM7S64.



    Microcontroller Features


    • ARM® Cortex®-M3 revision 2.0 running at up to 64 MHz

    • Memory Protection Unit (MPU)

    • DSP Instructions, Thumb®-2 instruction set


    • 64 Kbytes Single Plane embedded Flash, 128-bit wide access, memory accelerator

    • 16 Kbytes embedded SRAM

    • 16 Kbytes ROM with embedded bootloader routines (UART, USB) and IAP routines


    • Embedded voltage regulator for single-supply operation

    • Power-on-Reset (POR), Brown-out Detector (BOD) and Watchdog for safe operation

    • Quartz or ceramic resonator oscillators: 0.6 to 30MHz main power with Failure Detection and low power 32.768 kHz for RTC or device clock

    • High precision 8/12 MHz factory trimmed internal RC oscillator with 4 MHz default frequency for device startup. In-application trimming access for frequency adjustment

    • Slow clock internal RC oscillator as permanent low-power mode device clock

    • Two PLLs up to 130 MHz for device clock and for USB

    • Temperature Sensor

    • Up to 22 peripheral DMA (PDC) channels

    Low Power Modes

    • Sleep and Backup modes, down to < 2 μA in Backup mode

    • Ultra low power RTC


    • 64-lead LQFP, 10 x 10 mm, pitch 0.5 mm

    • 64-lead QFN, 9 x 9 mm, pitch 0.5 mm

    Temperature operating range

    • Industrial (-40° C to +85° C)
    Peripheral Features

    • USB 2.0 Device and Embedded Host: 12 Mbps, up to 8 bidirectional Endpoints and Multi-packet Ping-pong Mode. On-Chip Transceiver

    • USB 2.0 Device: 12 Mbps, 2668 byte FIFO, up to 8 bidirectional Endpoints. On-Chip Transceiver

    • 2 USARTs with ISO7816, IrDA®, RS-485, SPI, Manchester and Modem Mode

    • Two 2-wire UARTs

    • 2 Two Wire Interface (I2C compatible), 1 SPI, 1 Serial Synchronous Controller (I2S), 1 High Speed Multimedia Card Interface (SDIO/SD Card/MMC)

    • two 3-channel 16-bit Timer Counters with capture, waveform, compare and PWM mode. Quadrature Decoder Logic and 2-bit Gray Up/Down Counter for Stepper Motor

    • 4-channel 16-bit PWM with Complementary Output, Fault Input, 12-bit Dead Time Generator Counter for Motor Control

    • 32-bit Real-time Timer and RTC with calendar and alarm features

    • 32-bit Cyclic Redundancy Check Calculation Unit (CRCCU)


    • 47 I/O lines with external interrupt capability (edge or level sensitivity), debouncing, glitch  filtering and on-die Series Resistor Termination

    • Three 32-bit Parallel Input/Output Controllers, Peripheral DMA assisted Parallel Capture Mode

    Analog Features

    • 10-channel, 1Msps ADC with differential input mode and programmable gain stage

    • One 2-channel 12-bit 1Msps DAC

    • One Analog Comparator with flexible input selection, Selectable input hysteresis

    Debugger Development Support

    • Serial Wire/JTAG Debug Port(SWJ-DP)

    • Debug access to all memories and registers in the system, including Cortex-M4 register bank when the core is running, halted, or held in reset.

    • Serial Wire Debug Port (SW-DP) and Serial Wire JTAG Debug Port (SWJ-DP) debug access.

    • Flash Patch and Breakpoint (FPB) unit for implementing breakpoints and code patches.

    • Data Watchpoint and Trace (DWT) unit for implementing watchpoints, data tracing, and system profiling.

    • Instrumentation Trace Macrocell (ITM) for support of printf style debugging.

    • IEEE1149.1 JTAG Boundary-scan on all digital pins.

    Integrated Software Libraries and Tools

    • ASF-Atmel software Framework – SAM software development framework

    • Integrated in the Atmel Studio IDE with a graphical user interface or available as standalone for GCC, IAR compilers.

    • DMA support, Interrupt handlers Driver support

    • USB, TCP/IP, Wi-Fi and Bluetooth, Numerous USB classes, DHCP and Wi-Fi encryption Stacks

    • RTOS integration, FreeRTOS is a core component   

Technical Parameters

  • Core
  • ARM Cortex M3
  • Data Bus Width
  • 32 bit
  • Maximum Clock Frequency
  • 64 MHz
  • Program Memory Size
  • 64 KB
  • Data RAM Size
  • 16 KB
  • On Chip ADC
  • Yes
  • Operating Supply Voltage
  • 1.8 V, 3.3 V
  • Maximum Operating Temperature
  • + 85 C
  • Package / Case
  • QFP-64
  • Mounting Style
  • A/D Bit Size
  • 12 bit
  • A/D Channels Available
  • 10
  • Data ROM Size
  • 16 KB
  • Interface Type
  • 2-Wire, RS-485, SPI, UART
  • Minimum Operating Temperature
  • - 40 C
  • Number of Programmable I/Os
  • 47
  • Number of Timers
  • 6
  • On Chip DAC
  • Yes
  • Processor Series
  • AT91SAM3S
  • Program Memory Type
  • Flash
  • Factory Pack Quantity
  • 160

ATSAM3S1BA-AU Documents

  • ATSAM3S1B Technical Documentation of Application Note

ATSAM3S1BA-AU Related Products

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1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


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All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the ATSAM3S1BAAU we delivered, we will accept the replacement or return of the ATSAM3S1BA-AU only when all of the below conditions are fulfilled:
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Microchip Technology, Inc

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