AT91SAM7S256D-AU The AT91SAM7S256D-AU is a 16/32-bit ARM7 microcontroller from Microchip Technology. It features a 55MHz core, 256KB Flash memory, 64KB RAM, and 32 I/O lines in a 64-LQFP package.
Mfr Part #:

AT91SAM7S256D-AU

Available from 3 distributors
Mfr Name: Microchip Technology
Microchip Technology
The AT91SAM7S256D-AU is a 16/32-bit ARM7 microcontroller from Microchip Technology. It features a 55MHz core, 256KB Flash memory, 64KB RAM, and 32 I/O lines in a 64-LQFP package.
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AT91SAM7S256D-AU Available from 3 distributors

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AT91SAM7S256D-AU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Data Converters
Mounting Type
Number of I
Operating Temperature
Oscillator Type
Peripherals
Program Memory Size
Program Memory Type
RAM Size
Speed
Supplier Device Package
Termination Style
Voltage

AT91SAM7S256D-AU Description

Short technical summary and product information.

The Microchip Technology AT91SAM7S256D-AU is a high-performance 16/32-bit microcontroller based on the ARM7 core. It operates at up to 55MHz and provides 256KB of Flash program memory and 64KB of RAM. This microcontroller is designed for embedded applications requiring a rich set of peripherals.

 

Key specifications include a supply voltage range of 1.65V to 1.95V, 32 general-purpose I/O pins, and an internal oscillator. Connectivity options include I²C, SPI, SSC, UART/USART, and USB. Additional peripherals include Brown-out Detect/Reset, DMA, POR, PWM, and Watchdog Timer. It also features an 8-channel, 10-bit ADC.

 

The device is housed in a 64-LQFP (10x10mm) surface-mount package with gull-wing leads. It operates over a temperature range of -40°C to 85°C, making it suitable for industrial applications. The microcontroller is RoHS3 compliant and has an MSL of Level 1 (unlimited). For detailed design information, consult the official datasheet.

AT91SAM7S256D-AU Quick Information

Product Type: Microcontroller
Series: AT91SAM7S
Canonical Name: Microchip Technology AT91SAM7S256D-AU ARM7 Microcontroller
Subcategory: ARM7 Microcontrollers

AT91SAM7S256D-AU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

AT91SAM7S256D-AU Features

  • ARM7 core running at 55MHz.
  • 256KB Flash and 64KB RAM.
  • 1.65V to 1.95V supply range.
  • 32 I/O pins with multiple interfaces.
  • 64-LQFP surface-mount package.

AT91SAM7S256D-AU Applications

  • Ideal for industrial control applications.
  • Suitable for portable battery-powered devices.
  • Used in embedded USB peripheral systems.
  • Applicable in IoT edge nodes.

AT91SAM7S256D-AU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the AT91SAM7S256D-AU?

1.65V to 1.95V.

What package is the AT91SAM7S256D-AU available in?

64-LQFP (10x10mm) surface-mount package with gull-wing leads.

What is the operating temperature range?

-40°C to 85°C.

Is the AT91SAM7S256D-AU RoHS compliant?

The device is indicated as RoHS3 Compliant, but this is unverified.

What is the maximum clock speed?

55MHz.

How much Flash and RAM does it have?

256KB Flash and 64KB RAM.

How many I/O pins does it have?

32 I/O pins.

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