PCA2003_2

© NXP B.V. 2009. All rights reserved.

Product data sheet

Rev. 02 — 21 July 2009

14 of 21

NXP Semiconductors

PCA2003

32 kHz watch circuit with programmable adaptive motor pulse

× 0.122 ms. A signal with periodicity of

31.25 ms + n

× 0.122 ms appears at pad RESET and as current modulation at

7.11 Customer testing

output frequency is 8 Hz; the duty cycle reduction and battery check occurs every second,

instead of every 4 minutes.

Fig 11. Output waveform at pad RESET for instruction state 2

Fig 12. Supply voltage modulation for starting and stopping of instruction state 2

mgw355

31.25 ms

+ inhibition time

mgu719