Описание
The SAM7SE Series is a member of its Smart ARM Microcontroller family based on the 32- bit ARM7 RISC processor and high-speed Flash memory. It also embeds a large set of peripherals, including a USB 2.0 device, an External Bus Interface (EBI), and a complete set of system functions minimizing the number of external components. The EBI incorporates controllers for synchronous DRAM (SDRAM) and Static memories and features specific circuitry facilitating the interface for NAND Flash, SmartMedia and Compact Flash. The device is an ideal migration path for 8/16-bit microcontroller users looking for additional performance, extended memory and higher levels of system integration. 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 SAM7SE 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. By combining the ARM7TDMI processor with on-chip Flash and SRAM, and a wide range of peripheral functions, including USART, SPI, External Bus Interface, Timer Counter, RTT and Analog-to-Digital Converters on a monolithic chip, the SAM7SE512/256/32 is a powerful device that provides a flexible, cost-effective solution to many embedded control applications.
- 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, Organized in Two Contiguous Banks of 1024 Pages of 256 Bytes Dual Plane (SAM7SE512)
- 256 Kbytes (SAM7SE256) Organized in One Bank of 1024 Pages of 256 Bytes Single Plane (SAM7SE256)
- 32 Kbytes (SAM7SE32) Organized in One Bank of 256 Pages of 128 Bytes Single Plane (SAM7SE32)
- Single Cycle Access at Up to 30 MHz in Worst Case Conditions
- Prefect Buffer Optimizing Thumb Instruction Execution at Maximum Speed
- Page Programming Time: 6 ms, Including Page Auto-erase, Full Erase Time: 15 ms
- 10,000 Erase Cycles, 10-year Data Retention Capability, Sector Lock Capabilities, Flash Security Bit
- Fast Flash Programming Interface for High Volume Production
- 32 Kbytes (SAM7SE512/256) or 8 Kbytes (SAM7SE32) of Internal High-speed SRAM, Single-cycle Access at Maximum Speed
- One External Bus Interface (EBI)
- Supports SDRAM, Static Memory, Glue less Connection to Compact Flash® and ECC-enabled NAND Flash
- Memory Controller (MC)
- Embedded Flash Controller
- Memory Protection Unit
- 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
- Three Programmable External Clock Signals
- Advanced Interrupt Controller (AIC)
- Individually Mask able, Eight-level Priority, Vectored Interrupt Sources
- Two External Interrupt Sources and One Fast Interrupt Source, Spurious Interrupt Protected
- Debug Unit (DBGU)
- Two-wire UART and Support for Debug Communication Channel interrupt, Programmable ICE Access Prevention
- Mode for General Purpose Two-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
