PCA8565TS Philips Semiconductors, PCA8565TS Datasheet - Page 7

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

Philips Semiconductors
Table 9:
Table 10:
Table 11:
Table 12:
[1]
Table 13:
[1]
9397 750 10695
Product data
Bit
7
6 to 0
Bit
6 to 0
Bit
5 to 0
Bit
5 to 0
Bit
2 to 0
The PCA8565 compensates for leap years by adding a 29th day to February if the year counter contains a value which is exactly
divisible by 4, including the year 00.
These bits may be re-assigned by the user.
Seconds/VL (address 02H) bits description
Minutes (address 03H) bits description
Hours (address 04H) bits description
Days (address 05H) bits description
Weekdays (address 06H) bits description
Symbol
seconds
Symbol
minutes
Symbol
hours
Symbol
days
Symbol
weekdays
VL
[1]
8.6.3 Time and date registers
[1]
Value
0
1
00 to 59
Value
00 to 59
Value
00 to 23
Value
01 to 31
Value
0 to 6
Table 8:
[1]
[2]
Table 14:
Source clock (Hz)
4 096
64
1
1
Day
Sunday
Monday
Tuesday
Wednesday
60
TF and INT become active simultaneously.
n = loaded countdown value. Timer stopped when n = 0.
Description
clock integrity is guaranteed
integrity of the clock information is no longer guaranteed
this register holds the current seconds coded in BCD format; example: seconds
register contains x101 1001 = 59 seconds
Description
this register holds the current minutes coded in BCD format
Description
this register holds the current hours coded in BCD format
Description
this register holds the current day coded in BCD format
Description
this register holds the current weekday coded in BCD format, see
INT operation (bit TI/TP = 1)
Weekday assignments
Bit 7
x
x
x
x
Rev. 01 — 31 March 2003
INT period (s)
n = 1
1
1
1
1
Bit 6
x
x
x
x
8192
128
64
64
[1]
Bit 5
x
x
x
x
[2]
Bit 4
x
x
x
x
Bit 3
x
x
x
x
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
n > 1
1
1
1
1
4096
64
64
64
Real time clock/calender
Bit 2
0
0
0
0
PCA8565
Bit 1
0
0
1
1
Table 14
Bit 0
0
1
0
1
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