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What WDT options does the phone MCUs have?

April 26, 2017mcus Options phone wdt

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What WDT options does the phone MCUs have?

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10 Posted

• Use the internal WDT OSC as the WDT clock source: the WDT period at 5V is about 78µs, therefore the WDT overflow time will be 78µs x 2(WS2WS1WS0)+9. For example, if WS2,WS1,WS0=7, then the WDT overflow time will be 78µs x 27+9 = 5.11s. • Use fSYS/4 as the WDT clock source: the WDT period in the Normal Mode is 1.117µs x 29, in the Green Mode is 122.07µs x 29, therefore the WDT overflow time will be fSYS/4 x 2(WS2WS1WS0)+9. In the Sleep and Idle Mode, the WDT will cease to function. • Use the 32768Hz oscillator as the WDT clock source: the WDT period in the Normal Mode, Green Mode and Sleep Mode is 30.52µs x 29, therefore the WDT overflow time will be 30.52 x 2(WS2WS1WS0)+9. In the Idle Mode, the WDT will cease to function. • The WDT is disabled.