The 8051AHP is identical to the 8051AH with the exception of the Protection Feature. The 8751H-8 is identical to the 8751H but only operates up to 8 MHz. 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. It has 4 Kbytes of electrically programmable ROM which can be erased with ultraviolet light. The 8751H is an EPROM version of the 8051AH. 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 instruction set provides a convenient menu of 8-bit arithmetic instructions, including multiply and divide instructions. Byte-processing and numerical operations on small data structures are facilitated by a variety of fast addressing modes for accessing the internal RAM. The controllers are optimized for control applications.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |