pca8565a NXP Semiconductors, pca8565a Datasheet - Page 6

• Manufacturer Part Number: pca8565a
• Description: Real-time Clock/calendar
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 4.
Bit positions labelled as - are not implemented. Bit positions labelled as N should always be written with logic 0. After reset, all
registers are set according to
PCA8565A_2
Product data sheet
Address
Control registers
00h
01h
Time and date registers
02h
03h
04h
05h
06h
07h
08h
Alarm registers
09h
0Ah
0Bh
0Ch
CLKOUT control register
0Dh
Timer registers
0Eh
0Fh
Register overview
Register name
Control_status_1
Control_status_2
VL_seconds
Minutes
Hours
Days
Weekdays
Century_months
Years
Minute_alarm
Hour_alarm
Day_alarm
Weekday_alarm
CLKOUT_control
Timer_control
Timer
8.2 Register organization
Table
Bit
7
TEST1
N
VL
-
-
-
-
C
YEARS (0 to 99)
AE_M
AE_H
AE_D
AE_W
-
TE
TIMER
29.
6
N
N
SECONDS (0 to 59)
MINUTES (0 to 59)
-
-
-
-
MINUTE_ALARM (0 to 59)
-
-
-
-
-
Rev. 02 — 4 December 2009
5
STOP
N
HOURS (0 to 23)
DAYS (1 to 31)
-
-
HOUR_ALARM (0 to 23)
DAY_ALARM (1 to 31)
-
-
-
4
N
TI_TP
-
MONTH (1 to 12)
-
-
-
3
TESTC
AF
-
-
-
-
2
N
TF
WEEKDAYS (0 to 6)
WEEKDAY_ALARM (0 to 6)
-
-
Real-time clock/calendar
PCA8565A
1
N
AIE
FD
TD
© NXP B.V. 2009. All rights reserved.
0
N
TIE
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