PCA8565TS/1,118 NXP Semiconductors, PCA8565TS/1,118 Datasheet - Page 31

• Manufacturer Part Number: PCA8565TS/1,118
• Description: IC CMOS RTC/CALENDAR 8-TSSOP
• Manufacturer: NXP Semiconductors
• Type: Clock/Calendarr

Specifications of PCA8565TS/1,118

• Package / Case: 8-TSSOP
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-1902-2; 935272132118; PCA8565TS-T

NXP Semiconductors
13. Application information
PCA8565_2
Product data sheet
13.1.1 Method 1: fixed OSCI capacitor
13.1.2 Method 2: OSCI trimmer
13.1.3 Method 3: OSCO output
13.1 Quartz frequency adjustment
By evaluating the average capacitance necessary for the application layout, a fixed
capacitor can be used. The frequency is best measured via the 32.768 kHz signal
available after power-on at pin CLKOUT. The frequency tolerance depends on the quartz
crystal tolerance, the capacitor tolerance and the device-to-device tolerance (on average
Using the 32.768 kHz signal available after power-on at pin CLKOUT, fast setting of a
trimmer is possible.
Direct measurement of OSCO out (allowing for test probe capacitance).
Fig 27. Application diagram of PCA8565
f f
=
5 10
6 –
1 F
). Average deviations of 5 minutes per year can be easily achieved.
OSCI
OSCO
Rev. 02 — 16 June 2009
CLOCK CALENDAR
PCA8565
V
V
SS
DD
SDA
SCL
SDA
(I
2
C-bus)
SCL
SDA
SCL
R
V
DD
TRANSMITTER/
R
RECEIVER
Real time clock/calendar
MASTER
R: pull-up resistor
R =
PCA8565
C
V
t
© NXP B.V. 2009. All rights reserved.
r
b
DD
mce168
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