Explain Mode 0, and Mode 1 of 8254 Timer/Counter peripheral IC with help of timing diagram.

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Explain Mode 0, and Mode 1 of 8254 Timer/Counter peripheral IC with help of timing diagram.

written 5.6 years ago by

meghalikalyankar • 2.2k

• modified 4.6 years ago

microprocessors and peripherals

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written 5.6 years ago by

meghalikalyankar • 2.2k

Mode 0 (Interrupt on Terminal Count)

This mode id selected if (D3 D2 D1) of CWR is (0 0 0).
When this mode is selected OUT pin is initially low.
The count value is loaded. GATE pin is made high, so counting is enabled.
During counting, OUT pin remains low. …

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