PCA2125TS/1,112 NXP Semiconductors, PCA2125TS/1,112 Datasheet - Page 36

• 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
22. Contents
1
2
3
4
5
6
7
7.1
7.2
8
8.1
8.2
8.2.1
8.3
8.4
8.5
8.5.1
8.6
8.6.1
8.6.2
8.6.3
8.7
8.7.1
8.7.2
8.7.3
8.8
8.9
8.10
8.11
9
10
11
12
13
13.1
13.2
14
14.1
15
16
17
17.1
17.2
17.3
17.4
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 1
Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pinning information . . . . . . . . . . . . . . . . . . . . . . 3
Functional description . . . . . . . . . . . . . . . . . . . 3
Internal circuitry. . . . . . . . . . . . . . . . . . . . . . . . 26
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 26
Static characteristics. . . . . . . . . . . . . . . . . . . . 27
Dynamic characteristics . . . . . . . . . . . . . . . . . 28
Application information. . . . . . . . . . . . . . . . . . 30
Test information . . . . . . . . . . . . . . . . . . . . . . . . 30
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 31
Handling information. . . . . . . . . . . . . . . . . . . . 32
Soldering of SMD packages . . . . . . . . . . . . . . 32
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
Register overview . . . . . . . . . . . . . . . . . . . . . . . 4
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Power-on reset override . . . . . . . . . . . . . . . . . . 6
Control registers . . . . . . . . . . . . . . . . . . . . . . . . 7
Time and date function . . . . . . . . . . . . . . . . . . . 8
Alarm function. . . . . . . . . . . . . . . . . . . . . . . . . 10
Alarm flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Timer functions . . . . . . . . . . . . . . . . . . . . . . . . 13
Second and minute interrupt. . . . . . . . . . . . . . 13
Countdown timer function . . . . . . . . . . . . . . . . 15
Timer flags . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Interrupt output . . . . . . . . . . . . . . . . . . . . . . . . 17
Minute and second interrupts . . . . . . . . . . . . . 18
Countdown timer interrupts. . . . . . . . . . . . . . . 19
Alarm interrupts . . . . . . . . . . . . . . . . . . . . . . . 20
Clock output . . . . . . . . . . . . . . . . . . . . . . . . . . 21
External clock test mode. . . . . . . . . . . . . . . . . 21
STOP bit function . . . . . . . . . . . . . . . . . . . . . . 22
3-line SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Application diagram . . . . . . . . . . . . . . . . . . . . 30
Quartz frequency adjustment . . . . . . . . . . . . . 30
Quality information . . . . . . . . . . . . . . . . . . . . . 30
Introduction to soldering . . . . . . . . . . . . . . . . . 32
Wave and reflow soldering . . . . . . . . . . . . . . . 32
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 32
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 33
18
19
20
20.1
20.2
20.3
21
22
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2008.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [e-mail]
Revision history . . . . . . . . . . . . . . . . . . . . . . . 34
Legal information . . . . . . . . . . . . . . . . . . . . . . 35
Contact information . . . . . . . . . . . . . . . . . . . . 35
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 35
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 35
SPI Real-time clock/calendar
Document identifier: PCA2125_1
PCA2125
Date of release: 28 July 2008
All rights reserved.