D8751H-8单片机特征解密

下面，我们将针对D8751H-8单片机的主要功能特征做简单介绍，供各类技术工程师及芯片解密客户在单片机解密项目合作过程中进行技术参考和借鉴。
The MCS@51 controllers are optimized for control applications. Byte-processing and numerical operations on small data structures are facilitated by a variety of fast addressing modes for accessing the internal RAM. The instruction set provides a convenient menu of 8-bit arithmetic instructions, including multiply and divide instructions. Extensive on-chip support is provided for one-bit variables as a separate data type, allowing direct bit manipulation and testing in control and logic systems that require Boolean processing.
The 8751H is an EPROM version of the 8051AH. It has 4 Kbytes of electrically programmable ROM which can be erased with ultraviolet light. His fully compatible with the 8051AH but incorporates one additional feature: a Program Memory Security bit that can be used to protect the EPROM against unauthorized readout. The 8751H-8 is identical to the 8751H but only operates up to 8 MHz.
D8751H-8 Features
　　High Performance HMOS Process
　　Internal Timers/Event Counters
　　2-Level interrupt Priority Structure
　　32 1/0 Lines (Four 8-Bit Ports)
　　64K External Program Memory Space
　　Security Feature Protects EPROM Parts
　　Against Software Piracy
　　Boolean Processor
　　Bit-Addressable RAM
　　Programmable Full Duplex Serial Channel
　　111 Instructions (64 Single-Cycle)
　　64K External Data Memory Space
　　Extended Temperature Range(–40”C to +85”C)
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