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AT89C5131AL解密

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     AT89C5131AL Features
   80C52X2 Core (6 Clocks per Instruction)
  – Maximum Core Frequency 48 MHz in X1 Mode, 24 MHz in X2 Mode
  – Dual Data Pointer
  – Full-duplex Enhanced UART (EUART)
  – Three 16-bit Timer/Counters: T0, T1 and T2
  – 256 Bytes of Scratchpad RAM
   16/32-Kbyte On-chip Flash EEPROM In-System Programming through USB
  – Byte and Page (128 bytes) Erase and Write
  – 100k Write Cycles
   3-KbyteFlash EEPROM for Bootloader
  – Byte and Page (128 bytes) Erase and Write
  – 100k Write Cycles
   1-Kbyte EEPROM Data (
  – Byte and Page (128 bytes) Erase and Write
  – 100k Write Cycles
   On-chip Expanded RAM (ERAM): 1024 Bytes
   Integrated Power Monitor (POR/PFD) to Supervise Internal Power Supply
   USB 1.1 and 2.0 Full Speed Compliant Module with Interrupt on Transfer Completion
  – Endpoint 0 for Control Transfers: 32-byte FIFO
  – 6 Programmable Endpoints with In or Out Directions and with Bulk, Interrupt or
  Isochronous Transfers
   Endpoint 1, 2, 3: 32-byte FIFO
   Endpoint 4, 5: 2 x 64-byte FIFO with Double Buffering (Ping-pong Mode)
   Endpoint 6: 2 x 512-byte FIFO with Double Buffering (Ping-pong Mode)
  – Suspend/Resume Interrupts
  – Power-on Reset and USB Bus Reset
  – 48 MHz DPLL for Full-speed Bus Operation
  – USB Bus Disconnection on Microcontroller Request
   5 Channels Programmable Counter Array (PCA) with 16-bit Counter, High-speed
  Output, Compare/Capture, PWM and Watchdog Timer Capabilities
   Programmable Hardware Watchdog Timer (One-time Enabled with Reset-out): 50 ms to
  6s at 4 MHz
  Keyboard Interrupt Interface on Port P1 (8 Bits)
   TWI (Two Wire Interface) 400Kbit/s
   SPI Interface (Master/Slave Mode)
   34 I/O Pins
   4 Direct-drive LED Outputs with Programmable Current Sources: 2-6-10 mA Typical
   4-level Priority Interrupt System (11 sources)
   Idle and Power-down Modes
   0 to 32 MHz On-chip Oscillator with Analog PLL for 48 MHz Synthesis
   Industrial Temperature Range
   Low Voltage Range Supply: 2.7V to 3.6V (3.0V to 3.6V required for USB)
   Packages: SO28, PLCC52, VQFP64