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{{Original research|date=July 2022}}
'''Atmel ARM-based processors''' are [[microcontroller]]s and [[microprocessor]]s [[integrated circuit]]s, by [[
==Overview==
{{Main|ARM architecture|ARM Cortex-M|ARM Cortex-A}}
ARM licenses the core design for a series of 32-bit processors. ARM does not manufacture any complete silicon products, just intellectual property (IP). The ARM [[Central processing unit|processors]] are [[Reduced instruction set computing|RISC]] (reduced instruction set computing). This is similar to
[[Semiconductor]] companies such as
Some of the
==History==
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** SAM9R (2009)
** SAM9G (2009)
** SAM9M (2010)
** SAM9X (2020)<ref>{{Cite web |url=https://www.microchip.com/en-us/about/news-releases/products/mpu-based-som |title=Press release; Microchip; Aug. 4, 2022}}</ref>
* 2004 sign ARM1176JZ-S core license agreement (not used in Atmel parts)
* 2008 sign Cortex license agreement with ARM Holdings.<ref name="Press-20130204">[http://www.atmel.com/about/news/release.aspx?reference=tcm:26-45944 Press Release; Atmel; February 4, 2013.]</ref>
** Cortex-M3 (MCU) (ARMv7-M Harvard architecture)
*** SAM3U (2009)<ref name="Press-20090601">
*** SAM3S (2009)<ref name="Press-20091215">
*** SAM3N (2010)<ref name="Press-20101109">
*** SAM3A (2012)<ref name="Press-20120228">
*** SAM3X (2012)<ref name="Press-20120228"/>
** Cortex-M4 (MCU) (ARMv7E-M Harvard architecture)
*** SAM4S (2011)<ref name="Press-20111026">
*** SAM4L (2012)<ref name="Press-20120924">
*** SAM4E (2013) series based on the ARM Cortex-M4F, first Atmel MCU that has a FPU (Floating-Point Unit).<ref name="Press-20130114">[http://www.atmel.com/about/news/release.aspx?reference=tcm:26-45664 Press Release; Atmel; January 14, 2013.]</ref>
*** SAM4N (2013)
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*** SAMA5D4 (2014)<ref name="Press-20141001">[http://www.atmel.com/about/news/release.aspx?reference=tcm:26-63482 Press Release; Atmel; October 1, 2014.]</ref>
*** SAMA5D2 series (2015)<ref name="Press-20150914">[http://www.atmel.com/about/news/release.aspx?reference=tcm:26-72004 Press Release; Atmel; September 14, 2015.]</ref>
** Cortex-A7 (MPU) (ARMv7-A architecture)
*** SAMA7G5 (2022)<ref>[https://www.microchip.com/en-us/about/news-releases/products/new-1ghz-sama7g54-is-the-first-single-core-mpu-with-mipi-csi-2 Press Release; Microchip; May 24, 2022.]</ref>
*** SAMA7D6 (2025)<ref>[https://www.microchip.com/en-us/about/news-releases/products/introducing-sama7d65-microprocessors-available-in-system-in-package Press Release; Microchip; February 26, 2025.]</ref>
** Cortex-M0+ (MCU)in the SAM D20 (2013) (ARMv6-M architecture) – In June 2013, Atmel announced the SAMD20 series based on the ARM Cortex-M0+.<ref name="Press-20130617">[http://www.atmel.com/about/news/release.aspx?reference=tcm:26-48742 Press Release; Atmel; June 17, 2013.]</ref>
** Cortex-M7 (MCU) (ARMv7-M architecture)
*** SAMS70 series, (2015) Atmel announced the SAM S70 series based on the ARM Cortex-M7.<ref name="Press-20150715">[http://www.atmel.com/about/news/release.aspx?reference=tcm:26-69338 Press Release; Atmel; July 15, 2015.]</ref>
*** SAME70 series, (2015) Atmel announced the SAM S70 series based on the ARM Cortex-M7.<ref name="Press-20150715"/>
***
==Products==
===Microcontrollers===
Microcontrollers have internal program memory as well as the conventional internal registers and [[random-access memory|RAM]].
The SAM4S, SAM4N, SAM3S, SAM3N, SAM7S (64-pin) families have pin-compatible IC footprints, except for USB device, though they are not voltage level compatible.<ref>[http://www.embedded-know-how.com/component/resource/?task=goto&link=2809 Pin-compatible Cortex replacement for
===={{anchor|SAMC}}SAM
{{expand section|date=September 2020}}
The Atmel C family was launched in May 2015.<ref name="Cision2015">{{cite web
|url=https://www.prnewswire.com/news-releases/atmel-launches-innovative-5v-cortex-m0-mcu-family-with-integrated-peripheral-touch-controller-300089368.html
|title=Atmel Launches Innovative 5V Cortex-M0+ MCU Family With Integrated Peripheral Touch Controller
|date=27 May 2015
|website=prnewswire.com
|publisher=as furnished by Atmel Corporation
|access-date=1 September 2020
}}</ref> Based on Cortex-M0+, pin and code compatible with the SAM D and SAM L series,<ref name="Cision2015"/> with wide operating voltage ranges (2.7–5.5 V), CAN bus, and up to 12 DMA controller channels.
===={{anchor|SAMD|SAML}}SAM D====
{{expand section|date=August 2020}}
The SAM D (ATSAMD)<ref>[http://www.atmel.com/Microsite/samd/device.aspx Microsite; Atmel; July 11, 2014.]</ref> family from Microchip consists of four different sub series (SAM D10, SAM D11, SAM D20, SAM D21). The devices are all based on the [[ARM Cortex-M0+]] processor and offer different pin, memory, and feature combinations. The devices are pin- and code-compatible and share peripherals like the Event System and the '''SERCOM''' module for reconfigurable multiplexed [[serial communication]] ports.<ref name="learn.sparkfun.com">{{cite web | title=Adding More SERCOM Ports for SAMD Boards | website=learn.sparkfun.com | url=https://learn.sparkfun.com/tutorials/adding-more-sercom-ports-for-samd-boards | access-date=2021-09-29}}</ref> This microcontroller family is used on various hobbyist development boards, such as [[Arduino Uno#Arduino board comparison|Arduino Zero]] (ATSAMD21G18),<ref>{{cite web |title=Board; Zero; Docs |url=https://docs.arduino.cc/hardware/zero |website=Arduino |archive-url=https://web.archive.org/web/20230508142259/https://docs.arduino.cc/hardware/zero |archive-date=May 8, 2023 |url-status=live}}</ref><ref>{{cite web |title=Board; Zero; Store |url=https://store.arduino.cc/arduino-zero |website=Arduino}}</ref> [[SparkFun Electronics|Sparkfun]] SAMD21 Mini Breakout (ATSAMD21G18),<ref>{{Cite web |title=SparkFun SAMD21 Mini Breakout |url=https://www.sparkfun.com/products/13664 }}</ref> and Seeed Studio XIAO SAMD21 (ATSAMD21G18).<ref>{{Cite web |title=Seeed Studio XIAO SAMD21(Seeeduino XIAO) with SAMD21 Cortex M0+ |url=https://www.seeedstudio.com/Seeeduino-XIAO-Arduino-Microcontroller-SAMD21-Cortex-M0+-p-4426.html }}</ref>
The SAM D5X/E5X and SAM D51 feature the 32-bit Cortex-M4F.
===={{anchor|SAML}}SAM L====
{{expand section|date=September 2020}}
====SAM 3====
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The ATSAM4 is based on the [[ARM Cortex-M4]] core. The SAM4E includes a FPU ([[floating-point unit|Floating-Point Unit]]). The SAM4C includes a dual-core [[ARM Cortex-M4]] (one core with a FPU).
1 August 2017, the ATSAMD5x and ATSAME5x family was announced. This features several enhancements for lower power operation and more peripherals, Ethernet and CANBUS-FD in SAME5x series. [https://www.microchip.com/pressreleasepage/microchip-launches-two-new-sam-microcontroller-families-with-extensive-connectivity-interface-options] {{Webarchive|url=https://web.archive.org/web/20191106212342/https://www.microchip.com/pressreleasepage/microchip-launches-two-new-sam-microcontroller-families-with-extensive-connectivity-interface-options |date=2019-11-06 }}
* [http://www.atmel.com/devices/ATSAM4C16.aspx SAM4C] – ARM Cortex-M4/M4F dual-core, which includes FPU▼
* [
* [https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-11157-32-bit-Cortex-M4-Microcontroller-SAM4E16-SAM4E8_Datasheet.pdf SAM4E18-16 series] – ARM Cortex-M4F core, which includes FPU
* [
* [
* [https://www.microchip.com/design-centers/32-bit/sam-32-bit-mcus/sam-4s-mcus SAM4S] – ARM Cortex-M4 core
▲* [
* [https://www.microchip.com/design-centers/32-bit/sam-32-bit-mcus/sam-d-mcus SAMD5x] - Latest ARM Cortex-M4F core, which includes FPU and Integrated Security including Symmetric (AES) and Asymmetric (ECC) Encryption, Public Key Exchange Support(PUKCC), TRNG and SHA based memory Integrity checker.
* [https://www.microchip.com/design-centers/32-bit/sam-32-bit-mcus/sam-e-mcus SAME5x] - Same with D5x plus Ethernet MAC and CAN-FD networking peripherals. Both SAMD5x-E5x series integrate many similar peripherals for ex Timers and Sercoms for UART, I2C, SPI etc. from ATSAMD2x and ATSAMC2x M0+ series thus is easier to upgrade to M4F Core MCUs.
====SAM x70====
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* [http://www.atmel.com/products/microcontrollers/arm/sam-v-mcus.aspx SAMV70, SAMV71] – automotive high performance MCU
====Legacy
====={{anchor|AT91SAM7L64|AT91SAM7L128}}AT91SAM7=====
There are a wide variety of AT91 flash-based microcontrollers, based on [[ARM7TDMI]] cores. These chips have a top clock speed in the range of 60 MHz, and come with a variety of flash sizes and peripheral sets.
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* [http://www.atmel.com/products/microcontrollers/ARM/sam7x_xc.aspx SAM7X] – Ethernet, USB, CAN, and other peripherals
* [http://www.atmel.com/products/microcontrollers/ARM/sam7x_xc.aspx SAM7XC] -–cryptographic extensions (notably AES support) to AT91SAM7X chips
===Microprocessors===
====AT91SAM9====
The AT91SAM9XE flash-based microcontrollers are based on the ARM926ej-s cores. They have a top clock speed in the range of 200 up to 400 MHz, and come with a variety of flash sizes. They somewhat resemble flash-equipped AT91SAM9260 chips.
* [
* [
* [https://www.microchip.com/wwwproducts/en/AT91SAM9X35 SAM9X35]
* [
* [
* [
* [
====
This series is based on the [[ARM Cortex-A5]] core.<ref name="Press-20130204"/><ref>[
;SAMA5D2
* [
;SAMA5D3
* [
* [
* [
* [
* [
;SAMA5D4
* [
===Smart Energy===
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==Development tools==
===Cortex-M===
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;Windows
* Microchip - MPLAB and Microchip Studio for AVR and SAM devices (formerly Atmel Studio 7)
* IAR – Embedded Workbench for ARM
* [http://www.crossware.com/arm Crossware – Development Suite for ARM]
;Linux
* Buildroot<ref>[http://www.buildroot.org/ Buildroot]</ref>
* Openembedded<ref>[http://www.openembedded.org/ Openembedded]</ref>
* meta-atmel Yocto compliant layer<ref>
===Debuggers===
* Atmel-ICE
* JTAG-ICE
* [[Segger Microcontroller Systems|Segger]] [[J-LINK|J-Link]]
* [http://www.crossware.com/Arm/Jaguar Crossware Jaguar]
==Documentation==
The amount of documentation for all ARM chips is daunting, especially for newcomers. The documentation for microcontrollers from past decades would easily be inclusive in a single document, but as chips have evolved so has the documentation grown. The total documentation is especially hard to grasp for all ARM chips since it consists of documents from the IC manufacturer (for example, [[
A typical top-down documentation tree is: manufacturer website, manufacturer marketing slides, manufacturer datasheet for the exact physical chip, manufacturer detailed reference manual that describes common peripherals and aspects of a physical chip family, ARM core generic user guide, ARM core technical reference manual, ARM architecture reference manual that describes the instruction set(s).
;
# Microchip Microcontrollers and Microprocessors website
#
#
# ARM core website
# ARM core generic user guide
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# ARM architecture reference manual
==See also==
{{Portal
* [[ARM architecture]], [[List of ARM microprocessor cores]], [[ARM Cortex-M]]
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* [[Embedded system]], [[Single-board microcontroller]]
* [[Interrupt]], [[Interrupt handler]], [[Comparison of real-time operating systems]]
* [[
==References==
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==External links==
;
* {{Official website|
;ARM official documents
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;Other
* [http://www.at91.com/ Atmel AT91 ARM Microcontroller Forum]
* [https://web.archive.org/web/20070609084630/http://www.timesys.com/processor/atmel.htm Atmel AT91 Embedded Linux support]
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{{DEFAULTSORT:At91sam}}
[[Category:ARM
[[Category:ARM-based microcontrollers]]
[[Category:Atmel microcontrollers]]
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