MICROCHIP AT91SAM7X256C-AU

The Atmel SAM7X512/256/128 is a highly-integrated Flash microcontroller based on the 32-bit ARM RISC processor. It features 512/256/128 Kbytes of high-speed Flash and 128/64/32 Kbytes of SRAM, a large set of peripherals, including an 802.3 Ethernet MAC, and a CAN controller. 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. Builtin lock bits and a security bit protect the firmware from accidental overwrite and preserve its confidentiality. The SAM7X512/256/128 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, Timer Counter, RTT and analog-to-digital converters on a monolithic chip, the SAM7X512/256/128 is a powerful device that provides a flexible, cost-effective solution to many embedded control applications requiring communication over Ethernet, wired CAN 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
• EmbeddedICE In-circuit Emulation, Debug Communication Channel Support
• Internal High-speed Flash
• 512 Kbytes (SAM7X512) Organized in Two Banks of 1024 Pages of 256 Bytes (Dual Plane)
• 256 Kbytes (SAM7X256) Organized in 1024 Pages of 256 Bytes (Single Plane)
• 128 Kbytes (SAM7X128) Organized in 512 Pages of 256 Bytes (Single Plane)
• 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 (SAM7X512)
• 64 Kbytes (SAM7X256)
• 32 Kbytes (SAM7X128)
• 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
• Mode for General Purpose 2-wire UART Serial Communication
• 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
• Thirteen Peripheral DMA Controller (PDC) Channels
• 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 and I²C Compatible Devices 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