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SST89E52RD2芯片解密

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    SST89E52RD2芯片FEATURES:
  8-bit 8051-Compatible Microcontroller (MCU)with Embedded SuperFlash Memory
  – Fully Software Compatible
  – Development Toolset Compatible
  – Pin-For-Pin Package Compatible
  SST89E5xxRD2 Operation
  – 0 to 40 MHz at 5V
  SST89V5xxRD2 Operation
  – 0 to 33 MHz at 3V
  1 KByte Internal RAM
  Dual Block SuperFlash EEPROM
  – 8/16/32/64 KByte primary block +8 KByte secondary block (128-Byte sector size for both blocks)
  – Individual Block Security Lock with SoftLock
  – Concurrent Operation during In-Application Programming (IAP)
  – Memory Overlay for Interrupt Support during IAP
  Support External Address Range up to 64 KByte of Program and Data Memory
  Three High-Current Drive Ports (16 mA each)
  Three 16-bit Timers/Counters
  Full-Duplex, Enhanced UART
  – Framing Error Detection
  – Automatic Address Recognition
  Ten Interrupt Sources at 4 Priority Levels
  – Four External Interrupt Inputs
  Programmable Watchdog Timer (WDT)
  Programmable Counter Array (PCA)
  Four 8-bit I/O Ports (32 I/O Pins) and One 4-bit Port
  Second DPTR register
  Low EMI Mode (Inhibit ALE)
  SPI Serial Interface
  Standard 12 Clocks per cycle, the device has an option to double the speed to 6 clocks per cycle.
  TTL- and CMOS-Compatible Logic Levels
  Brown-out Detection
  Low Power Modes
  – Power-down Mode with External Interrupt Wake-up
  – Idle Mode
  Temperature Ranges:
  – Commercial (0°C to +70°C)
  – Industrial (-40°C to +85°C)
  Packages Available
  – 44-lead PLCC
  – 40-pin PDIP (Port 4 feature not available)
  – 44-lead TQFP