Описание
Microchip"s SAM7SE Series is a member of its Smart ARM Microcontroller family based on the 32- bit ARM7 RISC processor and high-speed Flash memory. • SAM7SE512 features a 512-Kbyte high-speed Flash and a 32 Kbyte SRAM. 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 CompactFlash. 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 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
- EmbeddedICE™ 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)
- 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 Erase Cycles, 10-year Data Retention Capability, Sector Lock Capabilities, Flash Security Bit
- Fast Flash Programming Interface for High Volume Production
- 32 Kbytes (SAM7SE512) of Internal High-speed SRAM, Single-cycle Access at Maximum Speed
- One External Bus Interface (EBI)
- Supports SDRAM, Static Memory, Glueless Connection to CompactFlash® 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
