Datasheet
PCF8523 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 6 — 17 September 2013 42 of 78
NXP Semiconductors
PCF8523
Real-Time Clock (RTC) and calendar
(1) Indicates normal duration of INT1 pulse.
The timing shown for clearing CTAF is also valid for the non-pulsed interrupt mode, that is, when
TAM set logic 0, where the INT1
pulse may be shortened by setting CTAIE logic 0.
Fig 25. Example of shortening the INT1 pulse by clearing the CTAF flag
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