大部分单片机都带有加密锁定位或者加密字节，以保护片内程序。如果在编程时加密锁定位被使能（锁定），就无法用普通编程器直接读取单片机内的程序，这就叫单片机加密。单片机攻击者借助专用设备或者自制设备，利用单片机芯片设计上的漏洞或软件缺陷，通过多种技术手段，就可以从芯片中提取关键信息，获取单片机内程序这就叫单片机解密。
　　邦凯长期提供针对各种IC芯片、单片机、DSP芯片、FPGA芯片以及其他高难度IC提供高效解密服务，我们长期以研究所的和实验室的研究模式进行多项技术攻关，可为每一款芯片提供最具经济价值和可靠性的解密服务。
　　AT89C5131AL解密请直接与我们联系：
　　芯片解密咨询热线：086-0755-83003639
　　E-mail：market2@pcblab.net
　　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