邦凯科技长期从事单片机解密（MCU解密）、专用IC解密、芯片解密、PLD芯片解密、CPLD芯片解密、FPGA解密、DSP芯片解密、ARM芯片解密，软件解密，单片机软硬件开发等技术研究与技术服务。
　　我们多年来一直专注加密芯片功能的设计和软件算法的研究、算法的软件实现，如：des加密、对称加密、md5加密等加解密算法的研究，及其硬件功能的实现、系统软件的开发和芯片底层驱动的设计，在MCU/CPLD/SPLD/PLD芯片解密技术的领域积累了丰富的开发经验。我们长期针对业内的各种疑难芯片或单片机解密技术进行集中攻关，已率先突破业内数十种单片机解密难题，是目前国内最权威的芯片解密技术研究机构。
　　（本公司解密服务仅限合法性，有关法律上的一切纠纷均有客户承担）
　　ATMEL单片机解密是我们的优势解密项目之一，我们对ATMEL单片机的解密技术已经比较成熟，单片机解密难度很低，单片机解密成功的概率几乎100%，解密周期较短，解密价格比较便宜。
　　有AT89S8253解密需求者请直接与我们联系：
　　芯片解密咨询热线：086-0755-83003639
　　E-mail：market2@pcblab.net
　　The AT89S8253 is a low- power, high- performance CMOS 8- bit microcontroller with 12K bytes of In- System Programmable (ISP) Flash program memory and 2K bytes of EEPROM data memory. The device is manufactured using Atmel’s high- density nonvolatile memory technology and is compatible with the industry- standard MCS- 51 instruction set and pinout. The on- chip downloadable Flash allows the program memory to be reprogrammed in- system through an SPI serial interface or by a conventional nonvolatile memory programmer. By combining a versatile 8- bit CPU with downloadable Flash on a monolithic chip, the Atmel AT89S8253 is a powerful microcontroller which provides a highly- flexible and cost- effective solution to many embedded control applications.
　　The AT89S8253 provides the following standard features: 12K bytes of In- System Programmable Flash, 2K bytes of EEPROM, 256 bytes of RAM, 32 I/O lines, programmable watchdog timer, two data pointers, three 16- bit timer/counters, a six- vector, four- level interrupt architecture, a full duplex serial port, on- chip oscillator, and clock circuitry. In addition, the AT89S8253 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port, and interrupt system to continue functioning. The Power- down mode saves the RAM contents but freezes the oscillator, disabling all other chip functions until the next external interrupt or hardware reset.
　　The on- board Flash/EEPROM is accessible through the SPI serial interface. Holding RESET active forces the SPI bus into a serial programming interface and allows the program memory to be written to or read from, unless one or more lock bits have been activated.
　　AT89S8253 特性
　　Compatible with MCS?- 51 Products
　　12K Bytes of In- System Programmable (ISP) Flash Program Memory
　　– SPI Serial Interface for Program Downloading
　　– Endurance: 10,000 Write/Erase Cycles
　　2K Bytes EEPROM Data Memory
　　– Endurance: 100,000 Write/Erase Cycles
　　64- byte User Signature Array
　　2.7V to 5.5V Operating Range
　　Fully Static Operation: 0 Hz to 24 MHz (in x1 and x2 Modes)
　　Three- level Program Memory Lock
　　256 x 8- bit Internal RAM
　　32 Programmable I/O Lines
　　Three 16- bit Timer/Counters
　　Nine Interrupt Sources
　　Enhanced UART Serial Port with Framing Error Detection and Automatic
　　Address Recognition
　　Enhanced SPI (Double Write/Read Buffered) Serial Interface
　　Low- power Idle and Power- down Modes
　　Interrupt Recovery from Power- down Mode
　　Programmable Watchdog Timer
　　Dual Data Pointer
　　Power- off Flag
　　Flexible ISP Programming (Byte and Page Modes)
　　– Page Mode: 64 Bytes/Page for Code Memory, 32 Bytes/Page for Data Memory
　　Four- level Enhanced Interrupt Controller
　　Programmable and Fuseable x2 Clock Option
　　Internal Power- on Reset
　　42- pin PDIP Package Option for Reduced EMC Emission
　　Green (Pb/Halide- free) Packaging Option