WebJan 16, 2003 · What about including the same file, o looking at what XBYTE is in 'absacc.h'? May be this could work: #define XBYTE *(xdata unsigned char *) >Further i got an error at … WebFeb 25, 2024 · You must include the ABSACC.H header file in the source file to define the XBYTE macro for absolute memory accesses. MORE INFORMATION. Refer to Absolute Access Macros in the Cx51 User's Guide. Refer to XBYTE in the Cx51 User's Guide. SEE ALSO. C51: Reserving Memory Accessed With XBYTE and XWORD;
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WebJan 15, 2024 · ① Oscillation period: refers to the period of the oscillation source. If it is generated internally, it is the oscillation period of quartz crystal. ② Clock cycle: 2 times of the full oscillation cycle, clock cycle = oscillation cycle P1 + oscillation cycle P2. ③ Machine cycle: a machine cycle includes 6 clock cycles. WebThis code provides the way to interface an RTC with a microcontroller and extract data from it and send it to the computer through serial port. The code uses the XBYTE macro which … grace nichols i is a long memoried woman poem
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WebMar 14, 2015 · Use very useful macro (#include )to read data using MOVC instruction. uint8_t temp = CBYTE [address]; Expand Post. Like Liked Unlike Reply. L862337916 (LPG Sensor) 8 years ago. And don't forget to temporary copy data from external ram to internal before writing data as erikm said. WebYou can no longer post new replies to this discussion. If you have a question you can start a new discussion WebReal time clock (RTC) is widely used in many application to provide accurate time. This article explains the making of a simple digital clock using RTC DS12C887 and 8051 microcontroller ( AT89C51 ). The output is displayed on an LCD. This clock also has a provision of setting time at any instant. grace nichols for forest