PCF8523 Datasheet, PDF (40/66 Pages) NXP Semiconductors – Real-Time Clock (RTC) and calendar

NXP Semiconductors
PCF8523
Real-Time Clock (RTC) and calendar
countdown counter 01
n
CDTF
INT1
(1)
SCL
instruction
CLEAR INSTRUCTION
013aaa334
(1) Indicates normal duration of INT1 pulse.
The timing shown for clearing CTAF is also valid for the non-pulsed interrupt mode, i.e. when
TAM set logic 0, where the INT1 pulse may be shortened by setting CTAIE logic 0.
Fig 24. Example of shortening the INT1 pulse by clearing the CTAF flag
PCF8523
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 30 March 2011
© NXP B.V. 2011. All rights reserved.
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