NXP Semiconductors
PCF8563
Real-time clock/calendar
6. Block diagram
OSCI
OSCILLATOR
32.768 kHz
OSCO
MONITOR
00
(1)
DIVIDER
CLOCK OUT
CLKOUT
CONTROL
CONTROL_STATUS_1
CONTROL_STATUS_2
CLKOUT_CONTROL
01
0D
POWER ON
RESET
TIME
02
03
V
DD
V
SS
04
05
06
07
WATCH
DOG
08
VL_SECONDS
MINUTES
HOURS
DAYS
WEEKDAYS
CENTURY_MONTHS
YEARS
ALARM FUNCTION
09
0A
SDA
SCL
I
2
C-BUS
INTERFACE
0B
0C
MINUTE_ALARM
HOUR_ALARM
DAY_ALARM
WEEKDAY_ALARM
INTERRUPT
TIMER FUNCTION
INT
PCF8563
0E
0F
TIMER_CONTROL
TIMER
001aah658
(1) C
OSCO
; values see
Fig 1.
Block diagram of PCF8563
PCF8563
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© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 9 — 16 June 2011
3 of 45
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