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已有 1160 次阅读2010-10-9 10:12 |个人分类:单片机|


  80C51 Core Architecture

  256 Bytes of On-chip RAM

  256 Bytes of On-chip XRAM

  16K Bytes of On-chip Flash Memory

  - Data Retention: 10 Years at 85°C

  - Erase/Write Cycle: 100K

  Boot Code Section with Independent Lock Bits

  2K Bytes of On-chip Flash for Bootloader

  In-System Programming by On-Chip Boot Program (CAN, UART) and IAP Capability

  2K Bytes of On-chip EEPROM

  - Erase/Write Cycle: 100K

  14-sources 4-level Interrupts

  Three 16-bit Timers/Counters

  Full Duplex UART Compatible 80C51

  Maximum Crystal Frequency 40 MHz. In X2 Mode, 20 MHz (CPU Core, 40 MHz)

  Three or Four Ports: 16 or 20 Digital I/O Lines

  Two-channel 16-bit PCA

  - PWM (8-bit)

  - High-speed Output

  - Timer and Edge Capture

  Double Data Pointer

  21-bit Watchdog Timer (7 Programmable bits)

  A 10-bit Resolution Analog-to-Digital Converter (ADC) with 8 Multiplexed Inputs

  Full CAN Controller

  - Fully Compliant with CAN rev.# 2.0A and 2.0B

  - Optimized Structure for Communication Management (Via SFR)

  - 4 Independent Message Objects

  -Each Message Object Programmable on Transmission or Reception

  -Individual Tag and Mask Filters up to 29-bit Identifier/Channel

  -8-byte Cyclic Data Register (FIFO)/Message Object

  -16-bit Status and Control Register/Message Object

  -16-bit Time-Stamping Register/Message Object

  -CAN Specification 2.0 Part A or 2.0 Part B Programmable for Each Message


  -Access to Message Object Control and Data Registers Via SFR

  -Programmable Reception Buffer Length up to 4 Message Objects

  -Priority Management of Reception of Hits on Several Message Objects

  Simultaneously (Basic CAN Feature)

  -Priority Management for Transmission

  -Message Object Overrun Interrupt

  - Supports

  -Time Triggered Communication

  -Autobaud and Listening Mode

  -Programmable Automatic Reply Mode

  1-Mbit/s Maximum Transfer Rate at 8 MHz(1) Crystal Frequency In X2 Mode

  Readable Error Counters

  Programmable Link to On-chip Timer for Time Stamping and Network Synchronization

  Independent Baud Rate Prescaler

  Data, Remote, Error and Overload Frame Handling

  Power-saving Modes

  - Idle Mode

  - Power-down Mode

  Power Supply: 3 Volts to 5.5 Volts

  Temperature Range: Industrial (-40° to +85°C)

  Packages: SOIC28, SOIC24, PLCC28, VQFP32







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