PCA8565 Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
PCA8565 Datasheet PDF : 26 Pages
| |||
Philips Semiconductors
PCA8565
Real time clock/calender
Table 8: INT operation (bit TI/TP = 1)
Source clock (Hz)
INT period (s)[2]
n = 1[1]
4 096
1⁄8 192
64
1⁄128
1
1⁄64
1⁄60
1⁄64
[1] TF and INT become active simultaneously.
[2] n = loaded countdown value. Timer stopped when n = 0.
n>1
1⁄4 096
1⁄64
1⁄64
1⁄64
8.6.3 Time and date registers
Table 9:
Bit
7
6 to 0
Seconds/VL (address 02H) bits description
Symbol Value
Description
VL
0
clock integrity is guaranteed
1
integrity of the clock information is no longer guaranteed
seconds
00 to 59
this register holds the current seconds coded in BCD format; example: seconds
register contains x101 1001 = 59 seconds
Table 10: Minutes (address 03H) bits description
Bit
Symbol Value
Description
6 to 0
minutes 00 to 59 this register holds the current minutes coded in BCD format
Table 11: Hours (address 04H) bits description
Bit
Symbol Value
Description
5 to 0
hours
00 to 23 this register holds the current hours coded in BCD format
Table 12:
Bit
5 to 0
Days (address 05H) bits description
Symbol Value
Description
days[1]
01 to 31 this register holds the current day coded in BCD format
[1] 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.
Table 13:
Bit
2 to 0
Weekdays (address 06H) bits description
Symbol Value
Description
weekdays[1] 0 to 6
this register holds the current weekday coded in BCD format, see Table 14
[1] These bits may be re-assigned by the user.
Table 14: Weekday assignments
Day
Bit 7 Bit 6 Bit 5
Sunday
x
x
x
Monday
x
x
x
Tuesday
x
x
x
Wednesday
x
x
x
Bit 4
x
x
x
x
Bit 3
x
x
x
x
Bit 2
0
0
0
0
Bit 1
0
0
1
1
Bit 0
0
1
0
1
9397 750 10695
Product data
Rev. 01 — 31 March 2003
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
7 of 26
Share Link: 