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AT91SAM7 » AT91SAM7XC256

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AT91SAM7XC256B-CU Mouser Electronics 15 BUY NOW QUOTE
Product Overview

Atmel´s AT91SAM7XC is a member of a series of highly integrated Flash microcontrollers based on the 32-bit ARM RISC processor.
It features 512/256/128 Kbyte high-speed Flash and 128/64/32 Kbyte SRAM, a large set of peripherals, including an 802.3 Ethernet MAC, a CAN controller, an AES 128 Encryption accelerator and a Triple Data Encryption System. A complete set of system functions minimizes the number of external components.
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 preserve its confidentiality.
The AT91SAM7XC 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. By combining the ARM7TDMI processor with on-chip Flash and SRAM, and a wide range of peripheral functions, including USART, SPI, CAN Controller, Ethernet MAC, AES 128 accelerator, TDES, Timer Counter, RTT and Analog-to-Digital Converters on a monolithic chip, the AT91SAM7XC is a powerful device that provides a flexible, cost-effective solution to many embedded control applications requiring secure communication over, for example, Ethernet, CAN wired and Zigbee wireless networks.

  • Incorporates the ARM7TDMI® ARM® Thumb® Processor
    • High-performance 32-bit RISC Architecture
    • High-density 16-bit Instruction Set
    • Leader in MIPS/Watt
    • Embedded ICE In-circuit Emulation, Debug Communication Channel Support
  • Internal High-speed Flash
    • 512 Kbytes (AT91SAM7XC512) Organized in 2048 Pages of 256 Bytes
    • 256 Kbytes (AT91SAM7XC256) Organized in 1024 Pages of 256 Bytes
    • 128 Kbytes (AT91SAM7XC128) Organized in 512 Pages of 256 Bytes
    • Single Cycle Access at Up to 30 MHz in Worst Case Conditions
    • Prefetch Buffer Optimizing Thumb Instruction Execution at Maximum Speed
    • Page Programming Time: 6 ms, Including Page Auto-erase, Full Erase Time: 15 ms
    • 10,000 Write Cycles, 10-year Data Retention Capability, Sector Lock Capabilities, Flash Security Bit
    • Fast Flash Programming Interface for High Volume Production
  • Internal High-speed SRAM, Single-cycle Access at Maximum Speed
    • 128 Kbytes (AT91SAM7XC512)
    • 64 Kbytes (AT91SAM7XC256)
    • 32 Kbytes (AT91SAM7XC128)
  • Memory Controller (MC)
    • Embedded Flash Controller, Abort Status and Misalignment Detection
  • Reset Controller (RSTC)
    • Based on Power-on Reset Cells and Low-power Factory-calibrated Brownout Detector
    • Provides External Reset Signal Shaping and Reset Source Status
  • Clock Generator (CKGR)
    • Low-power RC Oscillator, 3 to 20 MHz On-chip Oscillator and one PLL
  • Power Management Controller (PMC)
    • Power Optimization Capabilities, Including Slow Clock Mode (Down to 500 Hz) and Idle Mode
    • Four Programmable External Clock Signals
  • Advanced Interrupt Controller (AIC)
    • Individually Maskable, Eight-level Priority, Vectored Interrupt Sources
    • Two External Interrupt Sources and One Fast Interrupt Source, Spurious Interrupt Protected
  • Debug Unit (DBGU)
    • 2-wire UART and Support for Debug Communication Channel interrupt, Programmable ICE Access Prevention
  • Periodic Interval Timer (PIT)
    • 20-bit Programmable Counter plus 12-bit Interval Counter
  • Windowed Watchdog (WDT)
    • 12-bit key-protected Programmable Counter
    • Provides Reset or Interrupt Signals to the System
    • Counter May Be Stopped While the Processor is in Debug State or in Idle Mode
  • Real-time Timer (RTT)
    • 32-bit Free-running Counter with Alarm
    • Runs Off the Internal RC Oscillator
  • Two Parallel Input/Output Controllers (PIO)
    • Sixty-two Programmable I/O Lines Multiplexed with up to Two Peripheral I/Os
    • Input Change Interrupt Capability on Each I/O Line
    • Individually Programmable Open-drain, Pull-up Resistor and Synchronous Output
  • Seventeen Peripheral DMA Controller (PDC) Channels
  • One Advanced Encryption System (AES)
    • 128-bit Key Algorithm, Compliant with FIPS PUB 197 Specifications
    • Buffer Encryption/Decryption Capabilities with PDC
  • One Triple Data Encryption System (TDES)
    • Two-key or Three-key Algorithms, Compliant with FIPS PUB 46-3 Specifications
    • Optimized for Triple Data Encryption Capability
  • One USB 2.0 Full Speed (12 Mbits per second) Device Port
    • On-chip Transceiver, 1352-byte Configurable Integrated FIFOs
  • One Ethernet MAC 10/100 base-T
    • Media Independent Interface (MII) or Reduced Media Independent Interface (RMII
    • Integrated 28-byte FIFOs and Dedicated DMA Channels for Transmit and Receive
  • One Part 2.0A and Part 2.0B Compliant CAN Controller
    • Eight Fully-programmable Message Object Mailboxes, 16-bit Time Stamp Counter
  • One Synchronous Serial Controller (SSC)
    • Independent Clock and Frame Sync Signals for Each Receiver and Transmitter
    • I²S Analog Interface Support, Time Division Multiplex Support
    • High-speed Continuous Data Stream Capabilities with 32-bit Data Transfer
  • Two Universal Synchronous/Asynchronous Receiver Transmitters (USART)
    • Individual Baud Rate Generator, IrDA Infrared Modulation/Demodulation
    • Support for ISO7816 T0/T1 Smart Card, Hardware Handshaking, RS485 Support
    • Full Modem Line Support on USART1
  • Two Master/Slave Serial Peripheral Interfaces (SPI)
    • 8- to 16-bit Programmable Data Length, Four External Peripheral Chip Selects
  • One Three-channel 16-bit Timer/Counter (TC)
    • Three External Clock Inputs, Two Multi-purpose I/O Pins per Channel
    • Double PWM Generation, Capture/Waveform Mode, Up/Down Capability
  • One Four-channel 16-bit Power Width Modulation Controller (PWMC)
  • One Two-wire Interface (TWI)
    • Master Mode Support Only, All Two-wire Atmel EEPROMs Supported
  • One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with Digital I/Os
  • SAM-BA™ Boot Assistance
    • Default Boot program
    • Interface with SAM-BA Graphic User Interface
  • IEEE 1149.1 JTAG Boundary Scan on All Digital Pins
  • 5V-tolerant I/Os, Including Four High-current Drive I/O lines, Up to 16 mA Each
  • Power Supplies
    • Embedded 1.8V Regulator, Drawing up to 100 mA for the Core and External Components
    • 3.3V VDDIO I/O Lines Power Supply, Independent 3.3V VDDFLASH Flash Power Supply
    • 1.8V VDDCORE Core Power Supply with Brownout Detector
  • Fully Static Operation: Up to 55 MHz at 1.65V and 85°C Worst Case Conditions
  • Available in a 100-lead LQFP Green Package

Data Sheet


Reference Manual


Development Kits etc.

Provider Tool name Order Number
Atmel AT91SAM7X-EK Evaluation Board AT91SAM7X-EK

IDEs (Compilers etc.)

Provider Tool name Order Number
IAR Systems Embedded Workbench for ARM EWARM
Keil RealView® MDK for ARM Basic MDK-ARM-B
Keil RealView® MDK for ARM MDK-ARM
IAR Systems Embedded Workbench for ARM - Baseline EWARM-BL
Keil RealView Development Suite 4.1 Windows Node Locked License RS410-KT-30000
Keil RealView 4.1 Professional Development Suite Windows... RS41P-KT-40000
CodeSourcery Sourcery G++ for ARM EABI SGPP_ARM_EABI_s10
CodeSourcery Sourcery G++ for ARM uClinux SGPP_ARM_uC_s10
CodeSourcery Sourcery G++ for ARM GNU/Linux SGPP_ARM_LNX_s10
Keil RealView 4.1 Professional Development Suite Windows Node... RS41P-KT-30000

Debuggers / Simulators

Provider Tool name Order Number
Arium Arium's SourcePoint Debugger sourcepoint
Macraigor Systems JTAG Commander JTAG Commander
Micrium uC/Probe PRB-WINX-000000-P-P1-A


Provider Tool name Order Number
Arium HS-1000S JTAG Emulator with ETM Trace HS-1000S
Arium LC-500 JTAG Emulator LC-500
Arium LX-1000 JTAG Debugger With Deep Trace LX-1000

JTAG Probes

Provider Tool name Order Number
Macraigor Systems mpDemon™ 14 pin ARM JTAG header MARM14
Macraigor Systems mpDemon™ 20 pin ARM JTAG header MARM20
Macraigor Systems usb2Demon™ 14 pin ARM JTAG header U2D-ARM-14
Macraigor Systems Raven 14 pin ARM JTAG header RARM-14
Macraigor Systems Wiggler with 20 pin ARM JTAG header WNPJ-ARM-20
Macraigor Systems Wiggler with 14 pin ARM JTAG header WNPJ-ARM-14
Macraigor Systems usb2Demon™ 20 pin ARM JTAG header U2D-ARM-20
Macraigor Systems usb2Sprite™ for 20 pin ARM JTAG header U2S-ARM-20
IAR Systems J-Link JTAG Debug Probe jlink-arm
IAR Systems ARM Trace Debugger JTRACE-ARM-2M
SEGGER Microcontroller J-Trace ARM 8.10.00
Macraigor Systems usb2Wiggler™ 14 pin ARM JTAG header U2W-ARM-14
Macraigor Systems usb2Wiggler™ 20 pin ARM JTAG header U2W-ARM-20
Macraigor Systems Raven 20 pin ARM JTAG header RARM-20
NXP Semiconductors J-Link JTAG OM11031
SEGGER Microcontroller J-Link ULTRA 8.16.00 J-LINK ULTRA
SEGGER Microcontroller J-Link 8.08.00 J-LINK
SEGGER Microcontroller J-Link 5V Adapter 8.08.15
SEGGER Microcontroller J-Link PRO 8.12.00 J-LINK PRO
Abatron AG High-speed BDM/JTAG Interface for GNU Debugger BDI3000/A & bdiGDB Firmware
Keil ULINKpro Debug and Trace Unit ULINKpro
SEGGER Microcontroller J-Link EDU 8.08.90 J-LINK EDU

Operating Systems

Provider Tool name Order Number
Micrium µC/OS-III KRN-K3XX-PKG000-P-P1-A
Micrium μC/OS-II KRN-K2XX-PKG000-P-P1-A
CMX Systems CMX-Tiny+ RTOS CMX-Tiny
CMX Systems CMX-RTX, preemptive, multi-tasking RTOS CMX-RTX
SEGGER Microcontroller embOS (Real Time Operating System) 1.xx.xx
Micro Digital Inc. smx® Real Time Kernel for ARM and Cortex smxARM
Micro Digital Inc. SMX.Blaze™ blaze

Stacks/Protocols/File systems

Provider Tool name Order Number
CMX Systems CMX TCP/IP is a full-featured and fast TCP/IP stack CMX-TCP/IP
CMX Systems CMX-MicroNet is a very small and fast TCP/IP stack CMX-MicroNet
CMX Systems CMX-FFS is a Flash File System FFS
Micro Digital Inc. smxWiFi™ WiFi Stack smxWiFi
Micro Digital Inc. smxUSBD™ USB Device Stack smxUSBD
Micro Digital Inc. smxUSBO™ USB OTG Stack smxUSBO
Micro Digital Inc. smxUSBH™ USB Host Stack smxUSBH
Micro Digital Inc. smxFFS™ Flash File System smxFFS
Micro Digital Inc. smxFS™ Portable File System smxFS
Interniche Technologies FAT File System FatFile
Interniche Technologies NicheStack HTTP Server NicheStack HTTP
Interniche Technologies NicheStack SNMP NicheStack SNMP
Interniche Technologies NicheStack SSL/TLS NicheStack SSL
Interniche Technologies NicheStack IPSec IPSec
Interniche Technologies NicheStack RTP/RTCP NicheStack RTP
Interniche Technologies Gateway protocols Various
Interniche Technologies NicheStack IPv4 IPv4
Micro Digital Inc. smxNS™ TCP/IP Stack smxNS
SEGGER Microcontroller emWin (Graphics Software and GUI) 3.xx.xx
SEGGER Microcontroller emUSB (Embedded USB Stack) 9.xx.xx
SEGGER Microcontroller emFile (Embedded File System) 2.xx.xx
SEGGER Microcontroller embOS/IP (TCP/IP Stack) 7.xx.xx
Interniche Technologies NicheStack Dual IPv4/IPv6 IPv4/IPv6
Interniche Technologies NicheStack IPv6 IPv6


Provider Tool name Order Number
SEGGER Microcontroller Flasher ARM 5.07.01 FLASHER ARM
Xeltek SuperPro 5000 Programmer SuperPro 5000
Phyton ChipProg-G4 universal gang programmer CHIPPROG-G4
Phyton ChipProg-48 universal programmer CHIPPROG-48
Phyton ChipProg-40 universal programmer ChipProg-40

Software Design

Provider Tool name Order Number
IAR Systems IAR visualSTATE VS

Other Software Tools

Provider Tool name Order Number
SEGGER Microcontroller J-Flash 8.08.02
SEGGER Microcontroller J-Link RDI 8.08.03
SEGGER Microcontroller J-Link Flash Breakpoint 8.08.04
SEGGER Microcontroller J-Link GDB Server 8.08.08
SEGGER Microcontroller J-Link Flash Download 8.08.05
Macraigor Systems Java Board Test Java Board Test
Micro Digital Inc. GoFast® Floating Point Library GoFast
Micro Digital Inc. Prism GUI Products smxPrism
Micro Digital Inc. PEG GUI Products smxPEG

General Accessories

Provider Tool name Order Number
SEGGER Microcontroller J-Link ARM-14 8.08.01 J-LINK ARM-14
SEGGER Microcontroller JTAG Isolator 8.07.00 JTAG ISOLATOR
SEGGER Microcontroller J-Link 19-Pin Cortex-M Adapter 8.06.02 J-LINK 19-PIN CORTEX-M ADAPTER
SEGGER Microcontroller J-Link 9-Pin Cortex-M Adapter 8.06.00 J-LINK 9-PIN CORTEX-M ADAPTER