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8051 Microcontroller (Internals, Instructions, Programming and Interfacing)
book

8051 Microcontroller (Internals, Instructions, Programming and Interfacing)

by Subrata Ghosal
May 2024
Intermediate to advanced content levelIntermediate to advanced
503 pages
17h 2m
English
Pearson India
Content preview from 8051 Microcontroller (Internals, Instructions, Programming and Interfacing)
238
SERIAL COMMUNICATION AND SERIAL INTERRUPTS
along with IE.7 to enable serial interrupt. If necessary, then IP.4 also has to be set for modifying the
priorities of serial interrupt.
16.6.2 | Serial Communication Interrupt Service Routine
Although to be handled separately, both transmission and receiving interrupts are having a common vector
address for their ISR, which is 0023H.  e serial communication ISR, placed at this address, should check
both TI (bit 1) and RI (bit 0) of SCON SFR to ensure which one is the source of the present interrupt and
service accordingly. If TI bit is set then the processor completed 1-byte data transmission and ...
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Publisher Resources

ISBN: 9781282655034Publisher Website