PCA1461 데이터 시트보기 (PDF) - NXP Semiconductors.

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PCA1461

32 kHz watch circuits with adaptive motor pulse

NXP Semiconductors. 

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t LONF = 244 µs

STAGE 1

STAGE 2

STAGE 3

STAGE 4

STAGE 5

STAGE 8

t AOFF = 183 µs

t LOFF

t DF = 977 µs

t AOFF

t P3 = 3.9 ms

t P2 = 5.86 ms

t P1 = 7.81 ms

t ONL

t ON =

t DF t LOFF t LOFF

t DF

37.50 %

43.75 %

50.00 %

56.25 %

62.50 %

81.25 %

MSA946

tOFF for stage 1 to 5 = 672 µs − stage × 61 µs

tON for stage 1 to 5 = 305 µs + stage × 61 µs

Fig.4 Motor pulses in the lithium mode (VDD = 2.1 V).

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