PCA2125TS/1,112 NXP Semiconductors, PCA2125TS/1,112 Datasheet - Page 30

• Manufacturer Part Number: PCA2125TS/1,112
• Description: IC CMOS RTC/CALENDAR 14-TSSOP
• Manufacturer: NXP Semiconductors
• Type: Clock/Calendar/Alarmr

Specifications of PCA2125TS/1,112

• Package / Case: 14-TSSOP
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 1.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Function: Clock, Calendar
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.3 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: OM6292 - DEMO BOARD PCA2125 RTC
• Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 935283386112; PCA2125TS/1; PCA2125TS/1

NXP Semiconductors
13. Application information
14. Test information
PCA2125_1
Product data sheet
13.1 Application diagram
13.2 Quartz frequency adjustment
14.1 Quality information
This product has been qualified in accordance with the Automotive Electronics Council
(AEC) standard Q100 - Stress test qualification for integrated circuits , and is suitable for
use in automotive applications.
1. Method 1: fixed OSCI capacitor
2. Method 2: OSCI trimmer
3. Method 3: OSCO output
Fig 23. Application diagram
A fixed capacitor can be used whose value can be determined by evaluating the
average capacitance necessary for the application layout; see
frequency is best measured via the 32.768 kHz signal at pin CLKOUT available after
power-on. The frequency tolerance depends on the quartz crystal tolerance, the
capacitor tolerance and the device-to-device tolerance (on average 5
average deviation of 5 minutes per year can be easily achieved.
Fast setting of a trimmer is possible using the 32.768 kHz signal at pin CLKOUT
available after power-on.
Direct measurement of OSCO output (accounting for test probe capacitance).
The 1 farad capacitor is used as a standby and back-up supply. With the RTC in its minimum power
configuration i.e. timer off and CLKOUT off, the RTC can operate for several weeks.
Rev. 01 — 28 July 2008
supercapacitor
OSCI
OSCO
INT
1 F
V
DD
PCA2125
V
SS
CLKOUT
SDO
SCL
SDI
CE
SPI Real-time clock/calendar
001aaf918
Figure
PCA2125
© NXP B.V. 2008. All rights reserved.
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