AT91SAM7L64 32位ARM单片机

AT91SAM7L64 描述

The AT91SAM7L64 is a member of a series of high-performance, ultra-low power ARM7TDMI?-based microcontrollers, embedding power switches controlling multiple power islands and programmable voltage regulators to reduce power consumption in active and standby modes. In active mode, the power consumption is optimized via a programmable operating voltage, operating frequency, and peripheral clock activity, and the use of DMA instead of the CPU for data transfers. The SAM7L128 operates in single supply mode down to 1.8V and consumes 0.5mA/MHz typical in active mode when executing code out of its Flash memory.

The power consumption in the different standby modes is controlled via power switches, scalable voltage regulators, and the use of sampling techniques on Voltage Monitors, Power On Reset and Brown Out Detector instead of continuous measurement. This provides a higher level of granularity than is available in competing products, while achieving at least the same levels of power saving. In power down mode, the AT91SAM7L consumes only a typical 100nA, which is believed to be a unique feature for 32-bit MCUs.

• 128KB 系统内可编程Flash存储器: AT91SAM7L128
• 64KB 系统内可编程Flash存储器: AT91SAM7L64

AT91SAM7L64 特性

• 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
  – 128 Kbytes (AT91SAM7L128), Organized in 512 Pages of 256 Bytes Single Plane
  – 64 Kbytes (AT91SAM7L64), Organized In 256 Pages of 256 Bytes Single Plane
  – Single Cycle Access at Up to 15 MHz in Worst Case Conditions
  – 128-bit Read Access
  – Page Programming Time: 4.6 ms, Including Page Auto Erase, Full Erase Time: 10 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
  – 6 Kbytes
• 2 Kbytes Directly on Main Supply That Can Be Used as Backup SRAM
• 4 Kbytes in the Core
• Memory Controller (MC)
  – Enhanced Embedded Flash Controller, Abort Status and Misalignment Detection
• Enhanced Embedded Flash Controller (EEFC)
  – Interface of the Flash Block with the 32-bit Internal Bus
  – Increases Performance in ARM and Thumb Mode with 128-bit Wide Memory
  Interface
• Reset Controller (RSTC)
  – Based on Zero-power Power-on Reset and Fully Programmble Brownout Detector
  – Provides External Reset Signal Shaping and Reset Source Status
• Clock Generator (CKGR)
  – Low-power 32 kHz RC Oscillator, 32 kHz On-chip Oscillator, 2 MHz Fast RC
  Oscillator and one PLL
• Supply Controller (SUPC)
  – Minimizes Device Power Consumption
  – Manages the Different Supplies On Chip
  – Supports Multiple Wake-up Sources
• Power Management Controller (PMC)
  – Software Power Optimization Capabilities, Including Active and Four Low Power
  Modes:
• Idle Mode: No Processor Clock
• Wait Mode: No Processor Clock, Voltage Regulator Output at Minimum
• Backup Mode: Voltage Regulator and Processor Switched Off
• Off (Power Down) Mode: Entire Chip Shut Down Except for Force Wake Up Pin (FWUP) that Re-activates the Device. 100 nA Current Consumption.
• In Active Mode, Dynamic Power Consumption <30 mA at 36 MHz
  – Three Programmable External Clock Signals
  – Handles Fast Start Up ? 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
  – 128 Kbytes (AT91SAM7L128), Organized in 512 Pages of 256 Bytes Single Plane
  – 64 Kbytes (AT91SAM7L64), Organized In 256 Pages of 256 Bytes Single Plane
  – Single Cycle Access at Up to 15 MHz in Worst Case Conditions
  – 128-bit Read Access
  – Page Programming Time: 4.6 ms, Including Page Auto Erase, Full Erase Time: 10 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
  – 6 Kbytes
• 2 Kbytes Directly on Main Supply That Can Be Used as Backup SRAM
• 4 Kbytes in the Core
• Memory Controller (MC)
  – Enhanced Embedded Flash Controller, Abort Status and Misalignment Detection
• Enhanced Embedded Flash Controller (EEFC)
  – Interface of the Flash Block with the 32-bit Internal Bus
  – Increases Performance in ARM and Thumb Mode with 128-bit Wide Memory Interface
• Reset Controller (RSTC)
  – Based on Zero-power Power-on Reset and Fully Programmble Brownout Detector
  – Provides External Reset Signal Shaping and Reset Source Status
• Clock Generator (CKGR)
  – Low-power 32 kHz RC Oscillator, 32 kHz On-chip Oscillator, 2 MHz Fast RC Oscillator and one PLL
• Supply Controller (SUPC)
  – Minimizes Device Power Consumption
  – Manages the Different Supplies On Chip
  – Supports Multiple Wake-up Sources
• Power Management Controller (PMC)
  – Software Power Optimization Capabilities, Including Active and Four Low Power Modes:
• Idle Mode: No Processor Clock
• Wait Mode: No Processor Clock, Voltage Regulator Output at Minimum
• Backup Mode: Voltage Regulator and Processor Switched Off
• Off (Power Down) Mode: Entire Chip Shut Down Except for Force Wake Up Pin
  (FWUP) that Re-activates the Device. 100 nA Current Consumption.
• In Active Mode, Dynamic Power Consumption <30 mA at 36 MHz
  – Three Programmable External Clock Signals
  – Handles Fast Start Up

AT91SAM7L64 订购型号

AT91SAM7L64 技术支持

1. AT91SAM7L64数据手册DataSheet 下载. PDF(完整版)
2. AT91SAM7L64数据手册DataSheet 下载. PDF（简洁版）
3. ARM7TDMI 技术白皮书
4. AT91SAM 系列产品选型指南(Brochure, 2 pages, revision E, updated 2/09)
   Product selection guide to Atmel's AT91SAM microcontrollers that give immediate access to market-leading ARM processors.
5. Atmel's ARM-based Microcontroller Excels in Real-Time (White Paper, 6 pages, revision A, updated 3/01)
   Applications such as mobile communicators, PDAs, solid-state music players and internet appliances demand the best possible real-time performance. Atmel's AT91 series of ARM-based microcontrollers incorporates a number of advanced features that enhance the real-time performance of the ARM7TDMI core, making it ideal for applications of this nature.