UM10787 User manual for the I²C
Contents
1. All information provided in this document is subject to legal disclaimers NXP B V 2014 All rights reserved UM10787 User manual Rev 1 10 July 2014 7 of 14 NXP Semiconductors U M1 0787 User manual for the I2C bus RTC PCF85363A demo board OM13514 5 Graphical User Interface with OM13518 USB I C bus dongle 5 1 USB I C dongle Details are described in the user manual UM10789 The OM13518 dongle is a ready to run module It creates a virtual COM port via an USB connection It provides three I C bus connections with 5 V option to power the application max 450 mA Power consumption module total lt 50 mA max 500 mA I C bus clock frequency 245 Hz 400 kHz USB driver for Windows Windows XP Windows 7 Windows 8 Size 50 mm X 40 mm X 15mm USB I7C OM13518 Fig 4 A Dongle OM13518 B connected to the evaluation board OM13514 5 2 Software GUI The software control via a GUI allows a fast start to communicate to the different circuits Aside from the detailed GUI pages for the Real Time Clocks a UNIVERSAL INTERFACE allows to communicate with any I C bus device by entering directly the hex codes Example s A2 28 p Where s stands for the I2C START and p for the I2 C STOP condition UM10787 All information provided in this document is subject to legal disclaimers NXP B V 2014 All rights reserved User manual Rev 1 10 July 2014 8 of 14 NXP Semiconductors U M1 0787 Use2. tune the frequency to be slightly higher at the turn over point The error around 25 C clock goes too fast is then compensated during the time when temperature is lower or higher For example for operation between 5 C and 45 C tune the clock 8 ppm faster than the value for 25 C would be See Fig 6 1 Characteristic if tuned to 32 768 kHz at 25 C 2 Charactenstic if tuned with the positive offset Af Fig 6 Frequency averaged over the temperature range from 5 C to 45 C UM10787 All information provided in this document is subject to legal disclaimers NXP B V 2014 All rights reserved User manual Rev 1 10 July 2014 10 of 14 NXP Semiconductors U M1 0787 User manual for the I2C bus RTC PCF85363A demo board OM13514 7 References 1 AN11247 Improved timekeeping accuracy with PCF85063 PCF8523 and PCF2123 using an external temperature sensor 2 _UM10301 User Manual for NXP Real Time Clocks PCF85x3 PCA8565 and PCF2123 PCA2125 3 UM10789 User Manual for USB I C bus interface OM13518 with a GUI for the RTCs PCF85263 and PCF85363 UM10787 All information provided in this document is subject to legal disclaimers NXP B V 2014 All rights reserved User manual Rev 1 10 July 2014 11 of 14 NXP Semiconductors UM10787 User manual for the I2C bus RTC PCF85363A demo board OM13514 8 Legal information 8 1 Definition
3. Hardware start up all pins are accessible on connector P1 GND Von 3V to 5 5 V Connect I C bus SDA SCL pull ups are assumed to be on the I C master board Optional Activate coin cell battery by setting Jumper J3 to VBT Connect interrupt s For visualizing an interrupt an LED can be switched in by Jumper J2 Connect CLKOUT After power up 32 kHz is the output to calibrate the oscillator or it may be used as reference frequency e g as clock for the microcontroller LED on demo board will light up dimmed e Time stamp With the SW TS push button a time stamp event can be initiated The TS input must be configured for a mechanical switch therefore set the TSIM bit 1 e Software start up l C bus address 1010 001R W Write oscillator calibration value register 24h Set parameters registers 25h to 2Bh Write actual time registers 00h to 07h Read current time registers 00h to 07h UM10787 All information provided in this document is subject to legal disclaimers NXP B V 2014 All rights reserved User manual Rev 1 10 July 2014 6 of 14 UM10787 NXP Semiconductors User manual for the I2C bus RTC PCF85363A demo board OM13514 4 Circuit diagram 4 1 Demo board circuit diagram XTAL CM7V_TIA Fig 3 Demo board schematic 4 2 Incorporate it with an application in development This board can be connected via connector P1 to the application to be developed
4. It is customer s sole responsibility to determine whether the NXP Semiconductors product is suitable and fit for the customer s applications and products planned as well as for the planned application and use of customer s third party customer s Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products NXP Semiconductors does not accept any liability related to any default damage costs or problem which is based on any weakness or default in the customer s applications or products or the application or use by customer s third party customer s Customer is responsible for doing all necessary testing for the customer s applications and products using NXP Semiconductors products in order to avoid a default of the applications and the products or of the application or use by customer s third party customer s NXP does not accept any liability in this respect Export control This document as well as the item s described herein may be subject to export control regulations Export might require a prior authorization from competent authorities Evaluation products This product is provided on an as is and with all faults basis for evaluation purposes only NXP Semiconductors its affiliates and their suppliers expressly disclaim all warranties whether express implied or statutory including but not limited to the implied warranties of no
5. UM10787 User manual for the I2 C bus RTC PCF85363A demo board OM13514 Rev 1 10 July 2014 User manual Document information Info Content Keywords PCF85363 OM13514 demo board how to get started I C bus RTC Real Time Clock tuning time stamp battery switch elapsed time counter RAM OM13518 USB I C Dongle Abstract User manual for the RTC I C bus demo board OM13514 which contains the PCF85363A NXP Semiconductors U M1 0787 User manual for the I2C bus RTC PCF85363A demo board OM13514 Revision history Rev Date Description v 1 20140710 new user manual first revision Contact information For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com UM10787 All information provided in this document is subject to legal disclaimers NXP B V 2014 All rights reserved User manual Rev 1 10 July 2014 2 of 14 NXP Semiconductors U M1 0787 User manual for the I2C bus RTC PCF85363A demo board OM13514 1 Introduction The PCF85363A is part of the PCF85x63 family of CMOS Real Time Clocks RTCs optimized for low power consumption Different features sets are available The OM13514 is the ideal evaluation and demo board to be used in the design phase of any project just power and I C bus must be connected Separate dedicated demo boards and user manuals are available for the RTCs Table 1 Demo board overview D
6. XP Semiconductors reserves the right to make changes to information published in this document including without limitation specifications and product descriptions at any time and without notice This document supersedes and replaces all information supplied prior to the publication hereof Suitability for use NXP Semiconductors products are not designed authorized or warranted to be suitable for use in life support life critical or safety critical systems or equipment nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury death or severe property or environmental damage NXP Semiconductors accepts no liability for inclusion and or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and or use is at the customer s own risk Applications Applications that are described herein for any of these products are for illustrative purposes only NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification Customers are responsible for the design and operation of their applications and products using NXP Semiconductors products and NXP Semiconductors accepts no liability for any assistance with applications or UM10787 All information provided in this document is subject to legal disclaimers customer product design
7. ames and trademarks are property of their respective owners NXP B V 2014 All rights reserved User manual Rev 1 10 July 2014 12 of 14 NXP Semiconductors U M1 0787 User manual for the I2C bus RTC PCF85363A demo board OM13514 9 List of figures Fig 1 Block diagram of PCF85363 lacee 4 Fig 2 Demo board OM13514 Leere 5 Fig 3 Demo board schematic cc eeeeeeeeeteeeeeeeees 7 Fig 4 A Dongle OM13518 B connected to the evaluation board OM13514 cc eeeeeeeeeeeeeees 8 Fig 5 GUl page example Time Alarms Timestamps9 Fig 6 Frequency averaged over the temperature range from 5 C to 45 C ececeeeeeeeeeeeteesteteees 10 UM10787 All information provided in this document is subject to legal disclaimers NXP B V 2014 All rights reserved User manual Rev 1 10 July 2014 13 of 14 NXP Semiconductors UM10787 User manual for the I2C bus RTC PCF85363A demo board OM13514 10 Contents 2 1 2 2 3 1 3 2 3 3 4 1 4 2 5 1 5 2 6 1 8 1 8 2 8 3 10 Introduction wissisescsssecccssesccnsntcceneasseserancnssenasersnanacn 3 Key featureS s ssssnsenssunsnunenunennnnnnnnnnnnnnnnnnnnnnnnnnn 3 Demo board OM13514 i eeceeeeeeeeeeenneeeeeenes 3 Real time clock PCF85363A acn 4 Hardware set up cccseseeesssseeeeseseeneneeeeeenseeenensene 5 General requirement for the RTC PCF85363A 5 Demo board OM13514 i eeceeeeeeeeeeeneeeeeenes 5 Out ofthe POX wicac
8. art a tuning fork quartz as resonator The oscillation capacitors are integrated and therefore there is no need for external capacitors The quartz crystal must be placed close to the RTC circuit avoiding long lines which may pick up noise Avoid any tracks with high frequency signals fast edges close to the RTC quartz or quartz interconnect The I C bus interface works up to 400 kHz Supply voltage 1 8 V to 5 5 V The RTC excluding the I C bus interface is however operating down to a lower voltage It is recommended to have a decoupling capacitor of 100 nF each on the Vpp Vss and Veat Vss rails close by Due to the low power consumption of below 1 uW no precautions for heat dissipations are required even in a sealed housing environment Frequencies of 1Hz to 32 768 kHz at CLKOUT can be used to measure the frequency for calibration and or can be used for general purpose e g as reference for frequency generation with a PLL 3 2 Demo board OM13514 voo VDD 0900 OoOO O00000 00000 ooo0oo0o0o 0 0o00 0 00 oooo0oo0oo 0oo 0o 000 0 W 0M13510 PCF85263 J 0M13514 PCF85363 Fig 2 Demo board OM13514 All information provided in this document is subject to legal disclaimers NXP B V 2014 All rights reserved User manual Rev 1 10 July 2014 5 of 14 NXP Semiconductors U M1 0787 User manual for the I2C bus RTC PCF85363A demo board OM13514 3 3 Out of the box Connections e
9. emo board Documentation Related products OM11059A UM10698 PCF85063ATL and PCF85063TP OM11059 UM10699 PCF85063BTL OM13515 UM10788 PCF85063AT OM13510 UM10766 PCF85263A OM13518 UM10789 USB I C dongle 2 Key features UM10787 2 1 Demo board OM13514 The RTC PCF85363ATL with I C bus is mounted together with a quartz crystal a lithium battery plus the blocking capacitor buffering the supply voltage A push button allows activating the time stamp All signals are accessible on a line of pins overcoming the difficulties to contact the tiny package directly Demo board features Straight forward evaluation of the new tiny RTC PCF85363 with Battery back up 2alarm facilities with 2 configurable interrupt outputs Time stamp 64 Byte of RAM Tracking time or stopwatch with 1 100 s resolution e Easy access to all pins despite of the tiny package Connector P1 100mil 2 54 mm pin pitch Access to all pins e Battery on board for autonomous operation Can be switched off by placing Jumper J3 to Vpp e Push bottom SW TS to trigger time stamp e Easy measurements of power consumption Jumper J2 to open to link in a uA meter A scratch pad area is available to host some custom circuitry All information provided in this document is subject to legal disclaimers NXP B V 2014 All rights reserved User manual Rev 1 10 July 2014 3 of 14 NXP Semiconductors U M1 0787 UM10787 User man
10. have largest production quantities The tracks between quartz and RTC represent also some parasitic capacitances and must be kept short The PCF85363 has a tuning facility where tolerances can be compensated Tuning procedure e Measure the 32xxx Hz f signal at the CLKOUT pin e The offset is calculated in ppm as Afippmi 10 x f 32768 32768 UM10787 All information provided in this document is subject to legal disclaimers NXP B V 2014 All rights reserved User manual Rev 1 10 July 2014 9 of 14 NXP Semiconductors U M1 0787 User manual for the I2C bus RTC PCF85363A demo board OM13514 e Consult the offset table in the data sheet Take the correction value and write it into the register 02h e The correction is done by means of inhibition or addition the oscillator runs at constant speed then every 4 hours mode 0 1 second is corrected by making it shorter or longer The moment in time of correction can be made visible by enabling the interrupt OIEA or OIEB The clock frequency of 1 Hz is corrected over time Corrections can also be applied every 8 minutes by using mode 1 This mode will consume slightly more power The correction range is sufficiently large to implement also a temperature compensation The 32 kHz quartzes are of the type tuning fork and feature a parabolic frequency response over temperature When the application is dominantly used over a limited temperature range it is often helpful to
11. it sccdesiiesaeciel vueventecnees eniin 6 Circuit AiaQram sccsecsseeessseesseeesseeeeseeeeseeeeees 7 Demo board circuit diagram s e 7 Incorporate it with an application in development AEE E EE eskee 7 Graphical User Interface with OM13518 USB C bus dongle cscceseeesseeeeseeesseeeeseeenseeeeseeenes 8 USB I C dongle eenen 8 Software SU asniensis 8 RTC TUNING sieccsccctsccecestecscccccceecsscccccceasccentdextecescants 9 Frequency tuning cceeeeeeeeeeeseeeeeeeeeeeenaeeeeeenes 9 References s sssessnnssnennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn na 11 Legal information ssssssssunsesnnnnennnnnnnnnnnnnnnnnnnnnne 12 Definitions cccceceeeeceeceeeeeeeeeeeaeceeeeeeeeeenaees 12 Disclaim TS se a a a t 12 Trademarks cecccceccececeeeeeeceeceeeeeeeteeseaeeeeees 12 List of figUreS asssssseennssennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 13 COMMONS si sseeccice cccsed cates cates cocerccceescteedeceeasebeeerese 14 Please be aware that important notices concerning this document and the product s described herein have been included in the section Legal information NXP B V 2014 All rights reserved For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com Date of release 10 July 2014 Document identifier UM10787
12. n infringement merchantability and fitness for a particular purpose The entire risk as to the quality or arising out of the use or performance of this product remains with customer In no event shall NXP Semiconductors its affiliates or their suppliers be liable to customer for any special indirect consequential punitive or incidental damages including without limitation damages for loss of business business interruption loss of use loss of data or information and the like arising out the use of or inability to use the product whether or not based on tort including negligence strict liability breach of contract breach of warranty or any other theory even if advised of the possibility of such damages Notwithstanding any damages that customer might incur for any reason whatsoever including without limitation all damages referenced above and all direct or general damages the entire liability of NXP Semiconductors its affiliates and their suppliers and customer s exclusive remedy for all of the foregoing shall be limited to actual damages incurred by customer based on reasonable reliance up to the greater of the amount actually paid by customer for the product or five dollars US 5 00 The foregoing limitations exclusions and disclaimers shall apply to the maximum extent permitted by applicable law even if any remedy fails of its essential purpose 8 3 Trademarks Notice All referenced brands product names service n
13. r manual for the I2C bus RTC PCF85363A demo board OM13514 85263 RTC com3 Disconnect FC Address xA2 USB 12C Commands Standard Registers Special Registers Time Aams Timestamps Register Readback RAM 85363 only Demoboard Time and Alarm Register Settings 24 Hour Display Mode 1 100second Resolution RTC Mode w Watch Mode Input fields By x Set vo ExEcuTE SErTiME Curent SAT__ 13 MAR 204 START Output fields ALARMI pees Enable oy E CLEAR AIF Set Current interactive knobs ALARMZ x 2 SS Enable CHR MN WDY CLEAR A2F EXECUTE STATUS A2F lt 2 s A2 00 0003091413060314 p s A2 00s A308p s A228s A301p 00 04 09 14 130603 14 s A228 80p 00 s A2 00s A308p 06 1509 14130603 14 s A2005 A308p 741509 14 130603 14 s A2 00s A308p 41 16 09 14 13 06 03 14 sA200sA308p 38 17 09 14 13 06 03 14 s A2 00s A308p 95 17 09 14 13 06 03 14 Fig 5 GUl page example Time Alarms Timestamps 6 RTC tuning 6 1 Frequency tuning The 32 kHz quartzes are typically sold with a tolerance at room temperature of either 20 ppm or 10 ppm 11 5 ppm corresponds to 1 s day The quartzes feature a characteristic load capacity of either 7 pF or 12 5 pF Oscillators utilizing 7 pF quartzes feature slightly lower power consumption where the quartzes of 12 5 pF
14. s Draft The document is a draft version only The content is still under internal review and subject to formal approval which may result in modifications or additions NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information 8 2 Disclaimers Limited warranty and liability Information in this document is believed to be accurate and reliable However NXP Semiconductors does not give any representations or warranties expressed or implied as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information In no event shall NXP Semiconductors be liable for any indirect incidental punitive special or consequential damages including without limitation lost profits lost savings business interruption costs related to the removal or replacement of any products or rework charges whether or not such damages are based on tort including negligence warranty breach of contract or any other legal theory Notwithstanding any damages that customer might incur for any reason whatsoever NXP Semiconductors aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of NXP Semiconductors Right to make changes N
15. ual for the I2C bus RTC PCF85363A demo board OM13514 2 2 Real time clock PCF85363A e Very small form factor leadless package DFN2626 10 for PCF85363ATL just 2 6 x 2 6 x 0 5 mm TSSOP8 and TSSOP10 packages will be released too e Counting 100 seconds seconds minutes hours days week days month and years e Three timestamp register sets e Battery back up circuit accepting battery voltage larger or smaller than Vpp e 64 byte battery backed up RAM e The oscillator is based on a 32 768 kHz quartz crystal e Stop watch mode for elapsed time counting From 0 to 999 999 hours with a resolution of 1 100 second e Two independent alarms e WatchDog timer e Two independent interrupt generators outputs e Generates an interrupt automatically every second or every minute independent of alarm facility e Programmable offset register for frequency adjustment to compensate the quartz tolerance Quartz INT CLK INT Interface 12C or SPI Vss TS e normally open or closed RAM 64Byte Fig 1 Block diagram of PCF85363 All information provided in this document is subject to legal disclaimers NXP B V 2014 All rights reserved User manual Rev 1 10 July 2014 4 of 14 NXP Semiconductors U M1 0787 User manual for the I2C bus RTC PCF85363A demo board OM13514 3 Hardware set up UM10787 3 1 General requirement for the RTC PCF85363A The RTC circuit just requires one external p
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