PCA2000_2001_5

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 05 — 11 November 2008

9 of 28

NXP Semiconductors

PCA2000; PCA2001

32 kHz watch circuit with programmable adaptive motor pulse

[1]

Including the highest driving stage, which one has no motor step detection.

[2]

If the maximum duty cycle of 75 % is selected, not all programming combinations are possible since the

second highest level must be smaller than the highest driving level.

[1]

Between positive and negative detection pulses.

Pulse stretching

6

0

no pulse stretching

1

pulse of 2

Factory test bits

7to8

-

-

Table 7.

Description of word C bits

Bit

Value

Description

1 to 3

000

0.98 ms

001

1.95 ms

010

2.90 ms

011

3.90 ms

100

4.90 ms

101

5.90 ms

110

6.80 ms

111

7.80 ms

4 to 6

000

3.91 ms

001

4.88 ms

010

5.86 ms

011

6.84 ms

100

7.81 ms

101

8.79 ms

110

9.77 ms

111

10.74 ms

EOL voltage of the battery

7

0

1.38 V (silver-oxide)

1

2.5 V (lithium)

Factory test bit

8-

-

Table 6.

Bit

Value

Description