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Explain Mode 0, and Mode 1 of 8254 Timer/Counter peripheral IC with help of timing diagram.
written 7.1 years ago by gravatar for meghalikalyankar meghalikalyankar • 2.3k •   modified 6.2 years ago
microprocessors and peripherals
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written 7.1 years ago by gravatar for meghalikalyankar meghalikalyankar • 2.3k

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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