PCF210AA NXP [NXP Semiconductors], PCF210AA Datasheet - Page 34
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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
Table 40.
[1]
PCF2123
Product data sheet
Bit
STOP
Clock is running normally
0
STOP bit is activated by user. F
1
New time is set by user
1
STOP bit is released by user
0
F
0
is clocked at 32.768 kHz.
Prescaler bits
F
01-0 0001 1101 0100
XX-0 0000 0000 0000
XX-0 0000 0000 0000
XX-0 0000 0000 0000
XX-1 0000 0000 0000
XX-0 1000 0000 0000
XX-1 1000 0000 0000
:
11-1 1111 1111 1110
00-0 0000 0000 0001
10-0 0000 0000 0001
:
11-1 1111 1111 1111
00-0 0000 0000 0000
10-0 0000 0000 0000
:
11-1 1111 1111 1110
00-0 0000 0000 0001
First increment of time circuits after STOP bit release
0
F
1
-F
2
to F
14
[1]
1 Hz tick
0
F
1
are not reset and values cannot be predicted externally
013aaa352
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 27 April 2011
Time
hh:mm:ss
12:45:12
12:45:12
08:00:00
08:00:00
08:00:00
08:00:00
08:00:00
:
08:00:00
08:00:01
08:00:01
:
08:00:01
08:00:01
08:00:01
:
08:00:01
08:00:02
Comment
prescaler counting normally
prescaler is now running
-
-
-
:
-
0 to 1 transition of F
-
:
-
-
-
:
-
0 to 1 transition of F
prescaler is reset; time circuits are frozen
prescaler is reset; time circuits are frozen
14
14
SPI Real time clock/calendar
increments the time circuits
increments the time circuits
PCF2123
© NXP B.V. 2011. All rights reserved.
34 of 63
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