PCF212311 View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
'PCF212311' PDF : 63 Pages View PDF
NXP Semiconductors
PCF2123
SPI Real time clock/calendar
Table 38. Correction pulses for course mode
Correction value
Hour:Minute[1]
+1 or −1
+2 or −2
+3 or −3
:
+59 or −59
+60 or −60
+61 or −61
+62 or −62
+63 or −63
−64
02:00
02:01 to
02:59
02:00
02:01
02:02 to
02:59
02:00
02:01
02:02
02:03 to
02:59
:
02:00 to
02:58
02:59
02:00 to
02:59
02:00 to
02:58
02:59
02:00 to
02:58
02:59
02:00 to
02:58
02:59
02:00 to
02:58
02:59
Correction pulses on INT per
minute[2]
1
0
1
1
0
1
1
1
0
:
1
0
1
1
2
1
3
1
4
1
5
[1] Example is given in a time range from 2:00 to 2:59.
[2] Correction INT pulses are 1⁄128 s wide. For multiple pulses they are repeated at 1⁄64 s interval.
It is possible to monitor when correction pulses are applied. The correction interrupt
enable mode (bit CIE) will generate a 1⁄128 second pulse on INT for every correction
applied. In the case where multiple correction pulses are applied, a 1⁄128 second interrupt
pulse will be generated and repeated every 1⁄64 seconds.
Correction is applied to the 1 Hz clock. Any timer or clock output using a frequency of 1 Hz
or below will also be affected by the correction pulses.
PCF2123
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 27 April 2011
© NXP B.V. 2011. All rights reserved.
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