PCF85063BTL Datasheet, PDF (14/53 Pages) NXP Semiconductors – Tiny Real-Time Clock/calendar with alarm function and SPI-bus

NXP Semiconductors
PCF85063BTL
Tiny Real-Time Clock/calendar with alarm function and SPI-bus
Table 13. Offset values
OFFSET[6:0]
Offset value in
decimal
0111111
+63
0111110
+62
:
:
000 0010
+2
000 0001
+1
000 0000^[1]
0
1111111
1
1111110
2
:
:
100 0001
63
100 0000
64
Offset value in ppm
Normal mode
MODE = 0
+273.420
+269.080
:
+8.680
+4.340
0^[1]
4.340
8.680
:
273.420
277.760
Fast mode
MODE = 1
+256.347
+252.278
:
+8.138
+4.069
0^[1]
4.069
8.138
:
256.347
260.416
[1] Default value.
The correction is made by adding or subtracting clock correction pulses, thereby changing
the period of a single second but not by changing the oscillator frequency.
It is possible to monitor when correction pulses are applied. To enable correction interrupt
generation, bit CIE (register Control_1) has to be set logic 1. At every correction cycle a
pulse is generated on pin INT. The pulse width depends on the correction mode. If
multiple correction pulses are applied, an interrupt pulse is generated for each correction
pulse applied.
PCF85063BTL
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 15 April 2013
© NXP B.V. 2013. All rights reserved.
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