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PCF2129 数据表(PDF) 21 Page - NXP Semiconductors

部件名 PCF2129
功能描述  Automotive tiny Real-Time Clock/calendar with alarm function and I2C-bus
PDF  59 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

PCF2129 数据表(HTML) 21 Page - NXP Semiconductors

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PCA85063A
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2018. All rights reserved.
Product data sheet
Rev. 4 — 30 March 2018
21 of 59
NXP Semiconductors
PCA85063A
Automotive Real-Time Clock/calendar with alarm function and I2C-bus
8.3.2 Register Minutes
[1]
Default value.
8.3.3 Register Hours
[1]
Hour mode is set by the 12_24 bit in register Control_1.
[2]
Default value.
8.3.4 Register Days
[1]
If the year counter contains a value, which is exactly divisible by 4 (including the year 00), the PCA85063A
compensates for leap years by adding a 29th day to February.
[2]
Default value.
[3]
Default value is 1.
8.3.5 Register Weekdays
Table 21.
Minutes - minutes register (address 05h) bit description
Bit
Symbol
Value
Place value Description
7
-
0
-
unused
6to4
MINUTES
0[1] to 5
ten’s place
actual minutes coded in BCD
format
3 to 0
0[1] to 9
unit place
Table 22.
Hours - hours register (address 06h) bit description
Bit
Symbol
Value
Place value Description
7 to 6
-
00
-
unused
12-hour mode[1]
5AMPM
AM/PM indicator
0[2]
-AM
1-
PM
4
HOURS
0[2] to 1
ten’s place
actual hours in 12-hour mode
coded in BCD format
3to0
0[2] to 9
unit place
24-hour mode[1]
5 to 4
HOURS
0[2] to 2
ten’s place
actual hours in 24-hour mode
coded in BCD format
3to0
0[2] to 9
unit place
Table 23.
Days - days register (address 07h) bit description
Bit
Symbol
Value
Place value Description
7 to 6
-
00
-
unused
5to4
DAYS[1]
0[2] to 3
ten’s place
actual day coded in BCD format
3to0
0[3] to 9
unit place
Table 24.
Weekdays - weekdays register (address 08h) bit description
Bit
Symbol
Value
Description
7 to 3
-
00000
unused
2to0
WEEKDAYS
0to 6
actual weekday values, see Table 25



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