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What is correct about the BSR mode from below?

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in Microcontroller by (14.6k points)
What is correct about the BSR mode from below?

(a) In BSR mode, only the individual bits of PORT A can be programmed

(b) In BSR mode, only the individual bits of PORT B can be programmed

(c) In BSR mode, only the individual bits of PORT C can be programmed

(d) none of the mentioned

The question was asked in semester exam.

This intriguing question originated from Interfacing with 8255 topic in section AVR Microcontroller of Microcontroller

1 Answer

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by (24.2k points)
Right option is (c) In BSR mode, only the individual bits of PORT C can be programmed

Easiest explanation: BSR (Bit Set/Rest) mode is used to program individual bits of PORT C only.

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