Products > Integrated Circuits (ICs) > Embedded Processors & Controllers > AT91SAM7S256D-MU
  • AT91SAM7S256D-MU

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ARM MCU, SAM32 Family AT91SAM7S Series Microcontrollers, ARM7TDMI, 32bit, 55 MHz, 256 KB, 64 KB

  • Package/Case :
  • VQFN-64
  • Product Categories :
  • ARM Microcontrollers - MCU
  • RoHs Status:
  • Green
  • In-stock:
  • 6443


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AT91SAM7S256D-MU Product Details

The AT91SAM7S256D-MU is a SAM7S series 32-bit Flash Microcontroller based on the 32-bit ARM7TDMI RISC processor. It operates at a maximum speed of 55MHz and features 128kB of flash memory and 64kB of SRAM. The embedded flash memory can be programmed in-system via the JTAG-ICE interface or via a parallel interface on a production programmer prior to mounting. Built-in lock -bits and a security -bit protect the firmware from accidental overwrite and preserves its confidentiality. The SAM7S Series system controller includes a reset controller capable of managing the power-on sequence of the microcontroller and the complete system. Correct device operation can be monitored by a built-in brownout detector and a watchdog running off an integrated RC oscillator. It achieves single-cycle instruction access from embedded flash at 27MIPS. The multi-layer bus matrix, multiple SRAM banks, PDC and DMA support parallel tasks and maximize data throughput.



  • Incorporates the ARM7TDMI ARM Thumb processor
  • High-performance 32-bit RISC architecture
  • High-density 16-bit instruction set
  • Leader in MIPS/Watt
  • EmbeddedICE™ In-circuit emulation, debug communication channel support
  • Embedded flash controller, abort status and misalignment detection
  • Reset controller (RSTC)
  • Clock generator (CKGR)
  • Power management controller (PMC)
  • Advanced interrupt controller (AIC)
  • Debug unit (DBGU)
  • Periodic interval timer (PIT)
  • Windowed watchdog (WDT)
  • Real-time timer (RTT)
  • One parallel I/O controller (PIOA)
  • Peripheral DMA controller (PDC)
  • One USB 2.0 full speed (12Mbps) device port
  • One synchronous serial controller (SSC)
  • Universal synchronous/asynchronous receiver transmitters (USART)
  • One master/slave serial peripheral interface (SPI)

Technical Parameters

  • Core
  • ARM7
  • Data Bus Width
  • 16 bit/32 bit
  • Maximum Clock Frequency
  • 55 MHz
  • Program Memory Size
  • 256 KB
  • Data RAM Size
  • 64 KB
  • On Chip ADC
  • Yes
  • Operating Supply Voltage
  • 1.65 V to 1.95 V, 3 V to 3.6 V
  • Maximum Operating Temperature
  • + 85 C
  • Package / Case
  • VFQFN-64
  • Mounting Style
  • A/D Bit Size
  • 10 bit
  • A/D Channels Available
  • 8
  • Interface Type
  • Minimum Operating Temperature
  • - 40 C
  • Number of Programmable I/Os
  • 32
  • Number of Timers
  • 3
  • On Chip DAC
  • No
  • Packaging
  • Tray
  • Processor Series
  • ARM7
  • Program Memory Type
  • Flash

AT91SAM7S256D-MU Documents

  • AT91SAM7S256 Technical Documentation of Application Note
  • AT91SAM7S256 Technical Documentation of Application Note
  • AT91SAM7S256 Technical Documentation of Application Note

AT91SAM7S256D-MU Related Products

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  • **rtie***

    alles ok.,super Ware, gerne wieder

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Estimated Delivery Time: Dec 03 - Dec 08 days (choose Expedited at checkout).

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  • Shipping Type
  • Ship Fee
  • Lead Time
  • $20.00-$40.00 (0.50 KG)
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  • 5-14 days
  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

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  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

  • Step2:Vacuum packaging

    Step2: Vacuum Packaging

  • Step3:Anti-static bag

    Step3: Anti-Static Bag

  • Step4:Individual packaging

    Step4: Individual Packaging

  • Step5:Packaging boxes

    Step5: Packaging Boxes

  • Step6:bar-code shipping tag

    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Jotrin ESD packing


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.


Q: How does Jotrin guarantee that AT91SAM7S256D-MU is the original manufacturer or agent of MICROCHIP?
We have a professional business development department to strictly test and verify the qualifications of MICROCHIP original manufacturers and agents. All MICROCHIP suppliers must pass the qualification review before they can publish their AT91SAM7S256D-MU devices; we pay more attention to the channels and quality of AT91SAM7S256D-MU products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of AT91SAM7S256D-MU chips? Including MICROCHIP original factory information, ARM Microcontrollers - MCU application, AT91SAM7S256D-MU pictures?
You can use Jotrin's intelligent search engine, or filter by ARM7 Products category, or find it through Microchip Technology, Inc Information page.
Q: Are the MICROCHIP's AT91SAM7S256D-MU price and stock displayed on the platform accurate?
The MICROCHIP's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for AT91SAM7S256D-MU, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of AT91SAM7S256D-MU?
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 AT91SAM7S256DMU we delivered, we will accept the replacement or return of the AT91SAM7S256D-MU only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of AT91SAM7S256D-MU.
(3)The AT91SAM7S256D-MU is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as AT91SAM7S256D-MU datasheet pdf, AT91SAM7S256 pin diagram?
Need any After-Sales service, please feel free contact us:

Microchip Technology, Inc

Microchip Technology Inc. is a leading manufacturer of microcontroller and analog products, providing low-risk product development, lower total system cost, and faster time to market for thousands of diverse customer applications worldwide. Microchip offers outstanding technical support along with d...
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