Data Sheet

PCF8563_5 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 05 — 17 July 2007 20 of 32
NXP Semiconductors
PCF8563
Real time clock/calendar
12. Application information
Fig 21. I
2
C-bus timing waveforms
SDA
mga728
SDA
SCL
t
SU;STA
t
SU;STO
t
HD;STA
t
BUF
t
LOW
t
HD;DAT
t
HIGH
t
r
t
f
t
SU;DAT
Fig 22. Application diagram
mgm665
SCL
SDA
V
SS
OSCI
OSCO
CLOCK CALENDAR
PCF8563
SDA
SCL
MASTER
TRANSMITTER/
RECEIVER
V
DD
V
DD
SDA SCL
RR
V
DD
(I
2
C-bus)
R: pull-up resistor
R =
1 F
t
r
C
b