Blink Mode; Spinning Mode - NEC 78K0R - Save It! User Manual

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78K0R – Save It!

11.3.2 Blink mode

After the counter reached its final value of 49 the used timer interrupt is masked and the RTC interrupt will

be unmasked and is used for the next stage. Furthermore the INTP0 is unmasked to be able to leave this

stage whenever the user wants to.

The only function of this stage is to let the final counter value blink in a frequency of 2Hz controlled by the

RTC interrupt. To leave this stage only SW5 has to be pressed once.

When entering the Spinning mode the RTC interrupt and the INTP0 will be masked. In exchange the RTCI

Interrupt, which occurs every 31.25ms and the INTP2 are unmask. The function of the Spinning mode is to

spin 1 active segment around the 2 7segment LEDs. So every time a RTCI interrupt occurs the active

segment is stepped clockwise to the next segment on the outer ring of both 7 segment LEDs. To leave this

mode the SW6 has to be pressed to trigger an external interrupt. When leaving the spinning mode the

Count

mode

is entered again.

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U19663EE1V0UM00

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