pcf2127a NXP Semiconductors, pcf2127a Datasheet - Page 11

• Manufacturer Part Number: pcf2127a
• Description: Integrated Rtc, Tcxo And Quartz Crystal
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF2127A_1
Product data sheet
8.2.3 Register Control_3
Table 7.
[1]
[2]
Bit
7 to 5 PWRMNG[2:0]
4
3
2
1
0
Values see
Default value.
Symbol
BTSE
BF
BLF
BIE
BLIE
Control_3 - control and status register 3 (address 0Fh) bit description
Table
17.
Rev. 01 — 21 January 2010
Value
[1]
0
1
0
1
0
1
0
1
0
1
[2]
[2]
[2]
[2]
[2]
Description
control of the battery switch-over, battery low
detection, and extra power fail detection
functions
no timestamp when battery switch-over
occurs
time-stamped when battery switch-over
occurs
no battery switch-over interrupt generated
flag set when battery switch-over occurs;
battery status ok;
battery status low;
no interrupt generated from the battery flag
(BF)
interrupt generated when BF is set
no interrupt generated from battery low flag
(BLF)
interrupt generated when BLF is set
flag must be cleared to clear interrupt
no battery low interrupt generated
flag cannot be cleared using the interface
Integrated RTC, TCXO and quartz crystal
PCF2127A
© NXP B.V. 2010. All rights reserved.
Reference
Section 8.6
Section 8.12.4
Section 8.6.1
Section 8.6.3
Section 8.13.6
Section 8.13.7
11 of 79