PCF2123U/10AA/1 Просмотр технического описания (PDF) - NXP Semiconductors.

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PCF2123U/10AA/1

SPI Real time clock/calendar

NXP Semiconductors. 

NXP Semiconductors

PCF2123

SPI Real time clock/calendar

8.3.2 Register Control_2

Table 8. Control_2 - control and status register 2 (address 01h) bits description

Bit Symbol

Value

Description

Reference

7

MI

0[1]

minute interrupt is disabled

Section 8.6.3

1

minute interrupt is enabled

6

SI

0[1]

second interrupt is disabled

1

second interrupt is enabled

5

MSF

0[1]

no minute or second interrupt generated

1

flag set when minute or second interrupt

generated;

flag must be cleared to clear interrupt

when TI_IP = 0

4

TI_TP

0[1]

interrupt pin follows timer flags

Section 8.7.2

1

interrupt pin generates a pulse

3

AF

0[1]

no alarm interrupt generated

Section 8.5.5

1

flag set when alarm triggered;

flag must be cleared to clear interrupt

2

TF

0[1]

no countdown timer interrupt generated Section 8.6.4

1

flag set when countdown timer interrupt

generated;

flag must be cleared to clear interrupt

when TI_IP = 0

1

AIE

0[1]

no interrupt generated from the alarm flag Section 8.7.3

1

interrupt generated when alarm flag set

0

TIE

0[1]

no interrupt generated from the countdown Section 8.7.2

timer

1

interrupt generated by the countdown timer

[1] Default value.

PCF2123

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 6 — 15 July 2013

© NXP B.V. 2013. All rights reserved.

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