serial memory
4.In consideration of the problems of manual reading and recording of pressure values in annulus pressure detection, a new surface pressure monitoring and recording instrument is developed All the functions of 8031 single chip computer are basically used in the instrument, of which the hardware system consists of a pressure sensor,a serial A/D converter and a serial EEPROM memory, a small keyboard with 4 keys,a character liquid crystal display module and a micropanel printer;
7.It is compatible with the industry-standard 80C51 instruction set and pinout. The 8K Bytes on-chip downloadable Flash ROMs allows the program memory to be reprogrammed In-System through an SPI serial interface or by a conventional nonvolatile memory programmer. It can fully static operate at 24 MHz.
8.There are some points about the data storage, RS-232 serial-port communication , USB communication and the read-write USB mobile memory disk to storage .
9.The application of Cyclic Redundancy Check (CRC) in serial communication is introduced in this paper.If the system memory is limited and data stream is large,the method of allowing data to transfer and at the same time to check is proposed,and the principle of data stream block transferring is also discussed in detail.It solves the real time and reliability of transferring data stream for serial communication in micro-control system based on MCU.
