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PCF2129AT 数据表(PDF) 50 Page - NXP Semiconductors

部件名 PCF2129AT
功能描述  Accurate RTC with integrated quartz crystal for industrial applications
PDF  86 Pages
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
标志 PHILIPS - NXP Semiconductors

PCF2129AT 数据表(HTML) 50 Page - NXP Semiconductors

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PCF2129
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet
Rev. 7 — 19 December 2014
50 of 86
NXP Semiconductors
PCF2129
Accurate RTC with integrated quartz crystal for industrial applications
[1]
F0 is clocked at 32.768 kHz.
Table 73.
First increment of time circuits after stop release
Bit
STOP
Prescaler bits[1]
F0 to F8 - F9 to F14
1Hz tick
Time
hh:mm:ss
Comment
Clock is running normally
0
010000111-010100
12:45:12
prescaler counting normally
STOP bit is activated by user. F0 to F8 are not reset and values cannot be predicted externally
1
xxxxxxxxx-000000
12:45:12
prescaler is reset; time circuits are frozen
New time is set by user
1
xxxxxxxxx-000000
08:00:00
prescaler is reset; time circuits are frozen
STOP bit is released by user
0
xxxxxxxxx-000000
08:00:00
prescaler is now running
0
xxxxxxxxx-100000
08:00:00
0
xxxxxxxxx-100000
08:00:00
0
xxxxxxxxx-110000
08:00:00
::
:
0
111111111-111110
08:00:00
0
000000000-000001
08:00:01
0 to 1 transition of F14 increments the time circuits
0
100000000-000001
08:00:01
::
:
0
111111111-111111
08:00:01
0
000000000-000000
08:00:01
0
100000000-000000
::
:
0
111111111-111110
08:00:01
0
000000000-000001
08:00:02
0 to 1 transition of F14 increments the time circuits
Fig 27. STOP bit release timing



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