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PCF8564A 数据表(PDF) 11 Page - NXP Semiconductors

部件名 PCF8564A
功能描述  Nano-power highly accurate RTC with integrated quartz crystal for automotive applications
PDF  86 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

PCF8564A 数据表(HTML) 11 Page - NXP Semiconductors

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NXP Semiconductors
PCA2131
Nano-power highly accurate RTC with integrated quartz crystal for automotive applications
7.2.2 Register Control_2
Bits labeled as T are unused and return 0 when read.
Bit
7
6
5
4
3
2
1
0
Symbol
MSF
WDTF
T
AF
T
T
AIE
T
Reset
value
0
0
0
0
0
0
0
0
Table 7. Control_2 - control and status register 2 (address 01h) bit allocation
Bits labeled as T are unused and return 0 when read.
Bit
Symbol
Value
Description
Reference
0
no minute or second interrupt generated
7
MSF
1
flag set when minute or second interrupt
generated;
flag must be cleared to clear interrupt
Section 7.13
0
no watchdog timer interrupt generated
6
WDTF
1
flag set when watchdog timer interrupt generated;
flag cannot be cleared by command (read-only)
Section 7.13.3
5
T
0
unused
-
0
no alarm interrupt triggered
4
AF
1
flag set when alarm triggered;
flag must be cleared to clear interrupt
Section 7.10.6
3:2
T
0
unused
-
0
no interrupt generated from the alarm flag
1
AIE
1
interrupt generated when alarm flag set
Section 7.13.4
0
T
0
unused
-
Table 8. Control_2 - control and status register 2 (address 01h) bit description
7.2.3 Register Control_3
Bit
7
6
5
4
3
2
1
0
Symbol
PWRMNG[2:0]
BTSE
BF
BLF
BIE
BLIE
Reset
value
1
1
1
0
0
0
0
0
Table 9. Control_3 - control and status register 3 (address 02h) bit allocation
PCA2131
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2021. All rights reserved.
Product data sheet
Rev. 1.0 — 26 July 2021
11 / 86



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