Summary
The Microchip's ARM-based SAM7X256 is a member of the Microchip SAM7X series of microcontrollers based on the 32-bit ARM7TDMI processor. It operates at a maximum speed of 55 MHz and features 256KB of flash memory and 64KB of SRAM. The peripheral set includes USB 2.0 Full Speed device port, Ethernet MAC 10/100Base T port, CAN 2.0A and 2.0B compliant controller, two USARTs, UART, two SPI, SSC, TWI (I2C), three 16-bit timers, RTT and 8x10-bit ADC. Typical core supply is 1.8V, I/Os are supplied at 1.8V or 3.3V and are 5V tolerant. An integrated voltage regulator allows single supply at 3.3V. The SAM7X128 is supplied in 100-lead LQFP and TFBGA packages.
Features
• 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
- 256 Kbytes (SAM7X256) Organized in 1024 Pages of 256 Bytes (Single Plane)
• Internal High-speed SRAM, Single-cycle Access at Maximum Speed
- 64 Kbytes (SAM7X256)
• Memory Controller (MC)
• Reset Controller (RSTC)
• Clock Generator (CKGR)
• Power Management Controller (PMC)
• Advanced Interrupt Controller (AIC)
• Debug Unit (DBGU)
• Periodic Interval Timer (PIT)
- 20-bit Programmable Counter plus 12-bit Interval Counter
• Windowed Watchdog (WDT)
• Real-time Timer (RTT)
• Two Parallel Input/Output Controllers (PIO)
- Sixty-two Programmable I/O Lines Multiplexed with up to Two Peripheral I/Os
• Thirteen Peripheral DMA Controller (PDC) Channels
• One USB 2.0 Full Speed (12 Mbits per second) Device Port
• One Ethernet MAC 10/100 base-T
• One Part 2.0A and Part 2.0B Compliant CAN Controller
• One Synchronous Serial Controller (SSC)
• Two Universal Synchronous/Asynchronous Receiver Transmitters (USART)
• Two Master/Slave Serial Peripheral Interfaces (SPI)
• One Three-channel 16-bit Timer/Counter (TC)
• One Four-channel 16-bit Power Width Modulation Controller (PWMC)
• One Two-wire Interface (TWI)
• One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with Digital I/Os
• SAM-BA® Boot Assistance
• 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 100-lead LQFP Green and 100-ball TFBGA Green Packages
