我公司自2000年成立之初，就组建了自己的芯片解密及单片机软件开发团队，2002年正式成立芯片解密部。
SST系列芯片解密、单片机解密长期以来是我公司在芯片解密技术研究中的研发重点，针对SST系列各类简单型单片机及疑难型IC芯片，窝工上均倾注了较多的研发精力，目前不仅使简单型单片机解密的成本与周期不断降低，而且针对疑难IC芯片解密的成功率和可靠性得到不断提高。
SST89E516RD芯片是我公司在针对SST系列芯片解密的技术研究中近期成功破解的典型芯片型号，在这里，我们将针对SST89E516RD芯片做简单介绍，供客户及解密工程师参考借鉴.
关于SST89E516RD芯片
The SST89E516RDx and SST89V516RDx are members of the FlashFlex family of 8-bit microcontroller products designed and manufactured with SST’s patented and proprietary SuperFlash CMOS semiconductor process technology.The split-gate cell design and thick-oxide tunneling injector offer significant cost and reliability benefits for SST’s customers. The devices use the 8051 instruction set and are pin-for-pin compatible with standard 8051 microcontroller devices.
The devices come with 72 KByte of on-chip flash EEPROM program memory which is partitioned into 2 independent program memory blocks. The primary Block 0 occupies 64 KByte of internal program memory space and the secondary Block 1 occupies 8 KByte of internal program memory space.
The 8-KByte secondary block can be mapped to the lowest location of the 64 KByte address space; it can also be hidden from the program counter and used as an independent EEPROM-like data memory.In addition to the 72 KByte of EEPROM program memory on-chip and 1024 x8 bits of on-chip RAM, the devices can address up to 64 KByte of external program memory andup to 64 KByte of external RAM.
The flash memory blocks can be programmed via a standard 87C5x OTP EPROM programmer fitted with a special adapter and the firmware for SST’s devices. During poweron reset, the devices can be configured as either a slave to an external host for source code storage or a master to an external host for an in-application programming (IAP) operation. The devices are designed to be programmed in-system and in-application on the printed circuit board for maximum flexibility. The devices are pre-programmed with an example of the bootstrap loader in the memory, demonstrating the initial user program code loading or subsequent user code updating via the IAP operation. The sample bootstrap loader is available for the user’s reference and convenience only; SST does not guarantee its functionality or usefulness. Chip-Erase or Block-Erase operations will erase the pre-programmed sample code.
另外,我公司还为广大客户提供多层PCB抄板、光绘输出、BOM（元器件清单）制作、原理图反推等服务。配合我司的芯片解密、PCB生产、SMT加工，可为客户提供省心的一站式服务。
