PC8523-1 查看數據表（PDF） - NXP Semiconductors.

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PC8523-1

Real-Time Clock (RTC) and calendar

NXP Semiconductors. 

NXP Semiconductors

PCF8523

Real-Time Clock (RTC) and calendar

8.2.3 Register Control_3

Table 9. Control_3 - control and status register 3 (address 02h) bit description

Bit

Symbol

Value

Description

7 to 5 PM[2:0]

see Table 11[1] battery switch-over and battery low detection

control

4

-

-

unused

3

BSF

0[2]

no battery switch-over interrupt generated

1

flag set when battery switch-over occurs; flag

must be cleared to clear interrupt

2

BLF

0[2]

battery status ok

1

battery status low; flag is read-only

1

BSIE

0[2]

no interrupt generated from battery switch-over

flag, BSF

1

interrupt generated when BSF is set

0

BLIE

0[2]

no interrupt generated from battery low

flag, BLF

1

interrupt generated when BLF is set

[1] Default value is 111.

[2] Default value.

PCF8523

Product data sheet

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

Rev. 7 — 28 April 2015

© NXP Semiconductors N.V. 2015. All rights reserved.

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