PCA8565TS Philips Semiconductors, PCA8565TS Datasheet - Page 9

• Manufacturer Part Number: PCA8565TS
• Description: Real time clock/calender
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Table 18:
Table 19:
Table 20:
Table 21:
Table 22:
9397 750 10695
Product data
Bit
7
6 to 0
Bit
7
5 to 0
Bit
7
5 to 0
Bit
7
2 to 0
Bit
7
1 to 0
Minute alarm (address 09H) bits description
Hour alarm (address 0AH) bits description
Day alarm (address 0BH) bits description
Weekday alarm (address 0CH) bits description
CLKOUT control (address 0DH) bits description
Symbol
alarm minutes
Symbol
alarm hours
Symbol
alarm days
Symbol
alarm
weekdays
Symbol
FD1 and
FD0
AE
AE
AE
AE
FE
8.6.5 CLOCKOUT control register
8.6.6 Countdown timer
Value
0
1
0 to 6
Value
0
1
Value
0
1
00 to 59
Value
0
1
00 to 23
Value
0
1
01 to 31
Table 23:
The timer register is an 8-bit binary countdown timer. It is enabled and disabled via
the timer control register bit TE. The source clock for the timer is also selected by the
timer control register. Other timer properties such as interrupt generation are
controlled via control/status 2 register.
FD1
0
0
1
1
Description
weekday alarm is enabled
weekday alarm is disabled
this register holds the weekday alarm information coded in BCD format
Description
the CLKOUT output is inhibited and CLKOUT output is set to high-impedance
the CLKOUT output is activated
these bits control the frequency output at pin CLKOUT, see
FD1 and FD0: CLKOUT frequency selection
Description
minute alarm is enabled
minute alarm is disabled
this register holds the minute alarm information coded in BCD format
Description
hour alarm is enabled
hour alarm is disabled
this register holds the hour alarm information coded in BCD format
Description
day alarm is enabled
day alarm is disabled
this register holds the day alarm information coded in BCD format
FD0
0
1
0
1
Rev. 01 — 31 March 2003
CLKOUT frequency
32.768 kHz
1024 Hz
32 Hz
1 Hz
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
Real time clock/calender
Table 23
PCA8565
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