PCF2127AT datasheet(49/100 Pages) PHILIPS

Part #	PCF2127AT

Description	Accurate RTC with integrated quartz crystal for industrial applications

PDF	100 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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49 / 100 page

PCF2127

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Product data sheet

Rev. 8 — 19 December 2014

49 of 100

NXP Semiconductors

PCF2127

Accurate RTC with integrated quartz crystal for industrial applications

c. If the TSIE bit is active, an interrupt on the INT pin is generated.

The TSF1 and TSF2 flags can be cleared by command; clearing both flags clears the

interrupt. Once TSF2 is cleared, it will only be set again when TS pin is driven to

ground once again.

8.12.2 Timestamp mode

The timestamp function has two different modes selected by the control bit TSM

(timestamp mode) in register Timestp_ctl:

• If TSM is logic 0 (default): in subsequent trigger events without clearing the timestamp

flags, the last timestamp event is stored

• If TSM is logic 1: in subsequent trigger events without clearing the timestamp flags,

the first timestamp event is stored

The timestamp function also depends on the control bit BTSE in register Control_3, see

Section 8.12.4.

PCF2127AT Datasheet(PDF) 49 Page - NXP Semiconductors