Datasheet

PCF2127AT All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 6 — 11 July 2013 55 of 86
NXP Semiconductors
PCF2127AT
Integrated RTC, TCXO and quartz crystal
Fig 31. STOP bit functional diagram
001aaj342
OSC
32768 Hz
F
0
16384 Hz
F
1
8192 Hz
F
2
4096 Hz
128 Hz
F
8
RES
F
9
64 Hz
RES
F
10
LOWER PRESCALER UPPER PRESCALER
RES
F
13
RES
stop
1 Hz tick
F
14
Fig 32. STOP bit release timing
001aaj343
0 ms - 15.625 ms
64 Hz
stop released