PCA8565BS/1-T NXP Semiconductors, PCA8565BS/1-T Datasheet - Page 19

• Manufacturer Part Number: PCA8565BS/1-T
• Description: Real Time Clock AUTOMOTIVE CLOCK/CAL
• Manufacturer: NXP Semiconductors

Specifications of PCA8565BS/1-T

• Bus Type: Serial (2-Wire, I2C)
• Operating Supply Voltage (typ): 2.5/3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 1.8V
• Operating Temperature (min): -40C
• Pin Count: 10
• Mounting: Surface Mount
• Date Format: DW:DM:M:Y
• Time Format: HH:MM:SS
• Mounting Style: SMD/SMT
• Package / Case: HVSON
• Lead Free Status / RoHS Status: Compliant
• Other names: PCA8565BS/1,118

NXP Semiconductors
Table 28.
[1]
PCA8565_2
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
The STOP bit function will not affect the output of 32.768 kHz but will stop 1.024 kHz,
32 Hz and 1 Hz.
The lower two stages of the prescaler (F
is asynchronous to the crystal oscillator, the accuracy of re-starting the time circuits will be
between zero and one 8.192 kHz cycle (see
Fig 11. STOP bit release timing
[1]
0
F
1
are not reset and values cannot be predicted externally
stop released
1 Hz tick
013aaa076
8192 Hz
Rev. 02 — 16 June 2009
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
0
Comment
prescaler counting normally
prescaler is reset; time circuits are frozen
prescaler is reset; time circuits are frozen
prescaler is now running
-
-
-
:
-
0 to 1 transition of F
-
:
-
-
-
-
-
0 to 1 transition of F
and F
Figure
0 s to 122 s
1
) are not reset and because the I
11).
14
14
increments the time circuits
increments the time circuits
Real time clock/calendar
PCA8565
001aaf912
© NXP B.V. 2009. All rights reserved.
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C-bus
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