Testing Result

The overall system can be seperated into 2.5V domain and 1V domain. 2.5 V domain is mainly for the PCB power supply, which also take the most part of power consumption. 1V domain is mainly for the chip, especially for digital core.

Power Domain Power Consupmtion (W)
2.5V ~300m
1V ~36u
Low-Power Mode ~10m

The time comparasion is done by comparing the current time from cell phone with our system.

Accuracy
~0.2s per hour

Testing Signal Results

327hz_block1:

32768hz signal from XOUT

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Fig 1. 327hz block1

327hz with test1hz1:

32768hz signal from XOUT with testpin_1hz signal

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Fig 2. 327hz with test1hz1

327hz with test32:

32768hz signal from XOUT with 32768hz from test32kpin

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Fig 3. 327hz with test32

test1hz1:

1hz signal from test_1hzpin, each green pulse signal represent 1 s, the green pulse signal is not clear need to circuit

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Fig 4. test1hz1

testb6-b6:

input signal of button 5 and correspondent testpin5 signal

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Fig 5. testb6-b6

Clock under Testing

Figure 6 shows the clock in Clock Mode.

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Fig 6. Clock Mode

Figure 7 shows the clock in Date Mode.

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Fig 7. Date Mode

Figure 8 shows the clock in Timer Mode.

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Fig 8. Timer Mode


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