SAM3S Series

SAM3S Series Summary
( file size: 1993545 , 60 pages , revision ES , updated: 02/2013 )

SAM3S Series

SAM3S Series Complete
( file size: 7812274 , 1087 pages , revision E , updated: 02/2013 )

SAM3S Engineering Sample Devices

SAM3S Engineering Sample Devices Errata
( file size: 178509 , 8 pages , revision B , updated: 02/2011 )

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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 256KB of flash and 48KB of SRAM. The extensive peripheral set includes a FS USB device port with embedded transceiver, USART, two UARTs, two TWIs, two SPIs, I2S, PWM timer, three 16-bit timers, RTC, eight 12-bit ADCs and an analog comparator. The QTouch® library offers 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. The device operates from 1.62V to 3.6V, is available in 48-pin QFP and QFN packages, and is pin-to-pin compatible with the SAM3N4A.

Key Parameters


Flash (Kbytes):

256 Kbytes

Pin Count:


Max. Operating Freq. (MHz):

64 MHz



# of Touch Channels:


Hardware QTouch Acquisition:


Max I/O Pins:


Ext Interrupts:


USB Transceiver:


Quadrature Decoder Channels:



Ordering Codes

Ordering Code Package Speed Power Supply Operational Range Comment Buy Online Samples
ATSAM3S4AA-MU QFN R-QFN048_F 48 Industrial (A) (-40°C to 85°C) Buy Request
ATSAM3S4AA-AU LQFP R-LQ048_E 48 Industrial (A) (-40°C to 85°C) Buy Request