PCF210AA NXP [NXP Semiconductors], PCF210AA Datasheet - Page 10
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PCF210AA
Manufacturer Part Number
PCF210AA
Description
SPI Real time clock/calendar Time keeping application
Manufacturer
NXP [NXP Semiconductors]
Datasheet
1.PCF210AA.pdf
(63 pages)
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NXP Semiconductors
PCF2123
Product data sheet
After reset, the following mode is entered:
Table 6.
Bits labeled as - are not implemented. Bits labeled as X are undefined at power-on and unchanged
by subsequent resets.
Address Register name
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
Fig 7.
•
•
•
•
•
•
32.768 kHz on pin CLKOUT active
24 hour mode is selected
Offset register is set to 0
No alarms set
Timer disabled
No interrupts enabled
(1) When CE is inactive, the interface is reset.
reset signal
internal
Software reset command
Control_1
Control_2
Seconds
Minutes
Hours
Days
Weekdays
Months
Years
Minute_alarm
Hour_alarm
Day_alarm
Weekday_alarm
Offset_register
Timer_clkout
Countdown_timer
Register reset values
SCL
CE
All information provided in this document is subject to legal disclaimers.
R/W
b7
0
b6
0
b5
Rev. 5 — 27 April 2011
0
b4
1
Bit
7
0
0
1
-
-
-
-
-
X
1
1
1
1
0
-
X
b3
0
addr 00
b2
0
6
0
0
X
X
-
-
-
-
X
X
-
-
-
0
0
X
b1
HEX
0
b0
0
5
0
0
X
X
X
X
-
-
X
X
X
X
-
0
0
X
b7
0
b6
1
software reset 58
4
0
0
X
X
X
X
-
X
X
X
X
X
-
0
0
X
b5
0
b4
1
SPI Real time clock/calendar
3
0
0
X
X
X
X
-
X
X
X
X
X
-
0
0
X
b3
1
b2
HEX
0
b1
2
0
0
X
X
X
X
X
X
X
X
X
X
X
0
-
X
0
PCF2123
b0
© NXP B.V. 2011. All rights reserved.
0
1
0
0
X
X
X
X
X
X
X
X
X
X
X
0
1
X
001aai562
(1)
0
0
0
X
X
X
X
X
X
X
X
X
X
X
0
1
X
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