PCA8565 | NXP Semiconductors

Automotive

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Consumer

Technologies

Real-Time Clock/Calendar

PCA8565 Active

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The PCA8565A is a CMOS Real-Time Clock (RTC) and calendar optimized for low power consumption. A programmable clock output, interrupt output, and voltage-low detector are also provided. All addresses and data are transferred serially via a two-line bidirectional I²C-bus. Maximum bus speed is 400 kbit/s. The built-in word address register is incremented automatically after each written or read data byte.

Block Diagram

PCA8565 Block Diagram

PCA8565 Block Diagram
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Features

Key Features

  • AEC-Q100 compliant for automotive applications
  • Provides year, month, day, weekday, hours, minutes, and seconds based on 32.768 kHz quartz crystal
  • Clock operating voltage: 1.8 V to 5.5 V
  • Extended operating temperature range: -40 °C to +125 °C
  • Low backup current: typical 0.65 μA at VDD = 3.0 V and Tamb = 25 °C
  • 400 kHz two-line I²C-bus interface (at VDD = 1.8 V to 5.5 V)
  • Programmable clock output for peripheral devices (32.768 kHz, 1.024 kHz, 32 Hz, and 1 Hz)
  • Alarm and timer functions
  • Two integrated oscillator capacitors
  • Internal Power-On Reset (POR)
  • I²C-bus target address: read A3h; write A2h
  • Open-drain interrupt pin

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N true 0 PSPPCA8565en 11 Application Note Application Note t789 2 Brochure Brochure t518 1 Data Sheet Data Sheet t520 1 Packing Information Packing Information t935 2 Selector Guide Selector Guide t528 1 Supporting Information Supporting Information t531 1 User Guide User Guide t792 3 en_US en_US en Data Sheet Data Sheet 1 1 4.0 English 1442051834928698774509 PSP 375.6 KB None None documents None 1442051834928698774509 /docs/en/data-sheet/PCA8565.pdf 375648 /docs/en/data-sheet/PCA8565.pdf PCA8565 documents N N 2014-12-05 PCA8565, Real time clock/calendar – Datasheet /docs/en/data-sheet/PCA8565.pdf /docs/en/data-sheet/PCA8565.pdf Data Sheet N 980000996212993340 2022-12-07 pdf N en Dec 5, 2014 980000996212993340 Data Sheet Y N PCA8565, Real time clock/calendar – Datasheet Application Note Application Note 2 2 1.0 English 1442087330310721534478 PSP 763.2 KB None None documents None 1442087330310721534478 /docs/en/application-note/AN10853.pdf 763238 /docs/en/application-note/AN10853.pdf AN10853 documents N N 2016-07-11 ESD and EMC sensitivity of IC /docs/en/application-note/AN10853.pdf /docs/en/application-note/AN10853.pdf Application Note N 645036621402383989 2025-02-10 pdf N en Mar 14, 2013 645036621402383989 Application Note Y N ESD and EMC sensitivity of IC 3 2.0 English 1442087073862722241763 PSP 1.7 MB None None documents None 1442087073862722241763 /docs/en/application-note/AN10706.pdf 1672029 /docs/en/application-note/AN10706.pdf AN10706 documents N N 2016-07-11 Handling bare die /docs/en/application-note/AN10706.pdf /docs/en/application-note/AN10706.pdf Application Note N 645036621402383989 2024-07-12 pdf N en Jun 16, 2011 645036621402383989 Application Note Y N Handling bare die User Guide User Guide 3 4 6.0 Japanese 1442125286808710770774ja PSP 751.0 KB None None documents None 1442125286808710770774 /docs/ja/user-guide/UM10204.pdf 750958 /docs/ja/user-guide/UM10204.pdf UM10204 documents N N 2016-07-12 I2C-bus specification and user manual /docs/ja/user-guide/UM10204.pdf /docs/ja/user-guide/UM10204.pdf User Guide N 132339537837198660 2024-10-24 ja Apr 28, 2014 132339537837198660 User Guide Y N I2C-bus specification and user manual 7.0 English NXP Semiconductors developed a simple bidirectional 2-wire bus for efficient inter-IC control. This bus is called the Inter-IC or I2C-bus. Only two bus lines are required: a serial data line (SDA) and a serial clock line (SCL). Serial, 8-bit oriented, bidirectional data transfers can be made at up to 100 kbit/s in the Standard-mode, up to 400 kbit/s in the Fast-mode, up to 1 Mbit/s in the Fast-mode Plus (Fm+), or up to 3.4 Mbit/s in the High-speed mode. 1442125286808710770774 PSP 751.0 KB None None documents None 1442125286808710770774 /docs/en/user-guide/UM10204.pdf 750958 /docs/en/user-guide/UM10204.pdf UM10204 documents N N 2016-07-12 I2C-bus specification and user manual /docs/en/user-guide/UM10204.pdf /docs/en/user-guide/UM10204.pdf User Guide N 132339537837198660 2024-10-24 pdf N en Oct 1, 2021 132339537837198660 User Guide Y N I2C-bus specification and user manual 5 2.1 English 1442125649798715943478 PSP 983.6 KB None None documents None 1442125649798715943478 /docs/en/user-guide/UM10301.pdf 983634 /docs/en/user-guide/UM10301.pdf UM10301 documents N N 2016-07-11 User Manual for NXP Real Time Clocks PCF85x3, PCF85x63, PCA8565, PCF2123, and PCA21125 /docs/en/user-guide/UM10301.pdf /docs/en/user-guide/UM10301.pdf User Guide N 132339537837198660 2025-01-10 pdf N en Jul 24, 2015 132339537837198660 User Guide Y N User Manual for NXP Real Time Clocks PCF85x3, PCF85x63, PCA8565, PCF2123, and PCA21125 6 1.0 English 1442125429801702674389 PSP 749.6 KB Registration without Disclaimer None documents Extended 1442125429801702674389 /secured/assets/documents/en/user-guide/UM10528.pdf 749626 /secured/assets/documents/en/user-guide/UM10528.pdf UM10528 documents Y N 2012-02-06 PCA9632 demonstration board OM13269 /webapp/Download?colCode=UM10528 /secured/assets/documents/en/user-guide/UM10528.pdf User Guide N 132339537837198660 2025-02-10 pdf Y en Feb 6, 2012 132339537837198660 User Guide Y N PCA9632 demonstration board OM13269 Brochure Brochure 1 7 2 English NXP provides broad portfolio of lower power and high temperature Real Time Clocks for automotive applications 1442049170618710543515 PSP 354.3 KB None None documents None 1442049170618710543515 /docs/en/brochure/75017665.pdf 354250 /docs/en/brochure/75017665.pdf 75017665 documents N N 2015-07-21 Real-time clocks for automotive applications /docs/en/brochure/75017665.pdf /docs/en/brochure/75017665.pdf Brochure N 712453003803778552 2022-12-07 pdf N en Aug 21, 2019 712453003803778552 Brochure Y N Real-time clocks for automotive applications Packing Information Packing Information 2 8 1.0 English TSSOP8; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or Y Ordering code (12NC) ending 518 1442131052160715945979 PSP 239.8 KB None None documents None 1442131052160715945979 /docs/en/packing/SOT505-1_518.pdf 239813 /docs/en/packing/SOT505-1_518.pdf SOT505-1_518 documents N N 2015-02-02 TSSOP8; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or Y Ordering code (12NC) ending 518 /docs/en/packing/SOT505-1_518.pdf /docs/en/packing/SOT505-1_518.pdf Packing Information N 145666923842250347 2024-04-23 pdf N en Feb 2, 2015 145666923842250347 Packing Information Y N TSSOP8; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or Y Ordering code (12NC) ending 518 9 1.0 English Packing info for TSSOP8 package 1442131705242712040486 PSP 218.8 KB None None documents None 1442131705242712040486 /docs/en/packing/SOT505-1_118.pdf 218803 /docs/en/packing/SOT505-1_118.pdf SOT505-1_118 documents N N 2013-04-17 TSSOP8; Reel pack; SMD, 13"Q1/T1 Standard product orientationOrderable part number ending ,118 or JOrdering code (12NC) ending 118 /docs/en/packing/SOT505-1_118.pdf /docs/en/packing/SOT505-1_118.pdf Packing Information N 145666923842250347 2024-10-21 pdf N en Apr 15, 2013 145666923842250347 Packing Information Y N TSSOP8; Reel pack; SMD, 13"Q1/T1 Standard product orientationOrderable part number ending ,118 or JOrdering code (12NC) ending 118 Selector Guide Selector Guide 1 10 0 Japanese リアルタイム・クロックセレクターガイド。高精度な計時、長い電池寿命、過酷な環境でのアプリケーションに、NXPの豊富なRTCのポートフォリオからお選びください。 1579625550018748134969ja PSP 1.1 MB None None documents None 1579625550018748134969 /docs/ja/product-selector-guide/RTCSelectorGuideA4.pdf 1111554 /docs/ja/product-selector-guide/RTCSelectorGuideA4.pdf RTCSelectorGuideA4 documents N N 2020-01-21 Real Time Clocks Selector Guide Brochure /docs/ja/product-selector-guide/RTCSelectorGuideA4.pdf /docs/ja/product-selector-guide/RTCSelectorGuideA4.pdf Selector Guide N 553557935274807777 2024-04-12 ja Apr 5, 2023 553557935274807777 Selector Guide Y N リアルタイム・ クロック 5 English Real Time Clocks Selector Guide. For highly accurate time-keeping, long battery life, and rugged environment applications, choose from NXP's extensive portfolio of RTCs. 1579625550018748134969 PSP 1.1 MB None None documents None 1579625550018748134969 /docs/en/product-selector-guide/RTCSelectorGuideA4.pdf 1111554 /docs/en/product-selector-guide/RTCSelectorGuideA4.pdf RTCSelectorGuideA4 documents N N 2020-01-21 Real Time Clocks Selector Guide Brochure /docs/en/product-selector-guide/RTCSelectorGuideA4.pdf /docs/en/product-selector-guide/RTCSelectorGuideA4.pdf Selector Guide N 553557935274807777 2024-04-12 pdf N en Apr 17, 2023 553557935274807777 Selector Guide Y N Real Time Clocks Selector Guide Brochure Supporting Information Supporting Information 1 11 1.0 English Reflow Soldering temperature profile 1442122749741692602431 PSP 34.6 KB None None documents None 1442122749741692602431 /docs/en/supporting-information/Reflow_Soldering_Profile.pdf 34577 /docs/en/supporting-information/Reflow_Soldering_Profile.pdf REFLOW_SOLDERING_PROFILE documents N N 2016-10-08 Reflow Soldering Profile /docs/en/supporting-information/Reflow_Soldering_Profile.pdf /docs/en/supporting-information/Reflow_Soldering_Profile.pdf Supporting Information N 371282830530968666 2024-11-28 pdf N en Feb 17, 2014 371282830530968666 Supporting Information Y N Reflow Soldering Profile false 0 PCA8565 downloads en true 1 Y PSP Y Y Application Note 2 /docs/en/application-note/AN10853.pdf 2016-07-11 1442087330310721534478 PSP 2 Mar 14, 2013 Application Note None /docs/en/application-note/AN10853.pdf English documents 763238 None 645036621402383989 2025-02-10 N /docs/en/application-note/AN10853.pdf ESD and EMC sensitivity of IC /docs/en/application-note/AN10853.pdf documents 645036621402383989 Application Note N en None Y pdf 1.0 N N ESD and EMC sensitivity of IC 763.2 KB AN10853 N 1442087330310721534478 /docs/en/application-note/AN10706.pdf 2016-07-11 1442087073862722241763 PSP 3 Jun 16, 2011 Application Note None /docs/en/application-note/AN10706.pdf English documents 1672029 None 645036621402383989 2024-07-12 N /docs/en/application-note/AN10706.pdf Handling bare die /docs/en/application-note/AN10706.pdf documents 645036621402383989 Application Note N en None Y pdf 2.0 N N Handling bare die 1.7 MB AN10706 N 1442087073862722241763 Brochure 1 /docs/en/brochure/75017665.pdf 2015-07-21 1442049170618710543515 PSP 7 Aug 21, 2019 Brochure NXP provides broad portfolio of lower power and high temperature Real Time Clocks for automotive applications None /docs/en/brochure/75017665.pdf English documents 354250 None 712453003803778552 2022-12-07 N /docs/en/brochure/75017665.pdf Real-time clocks for automotive applications /docs/en/brochure/75017665.pdf documents 712453003803778552 Brochure N en None Y pdf 2 N N Real-time clocks for automotive applications 354.3 KB 75017665 N 1442049170618710543515 Data Sheet 1 /docs/en/data-sheet/PCA8565.pdf 2014-12-05 1442051834928698774509 PSP 1 Dec 5, 2014 Data Sheet None /docs/en/data-sheet/PCA8565.pdf English documents 375648 None 980000996212993340 2022-12-07 N /docs/en/data-sheet/PCA8565.pdf PCA8565, Real time clock/calendar – Datasheet /docs/en/data-sheet/PCA8565.pdf documents 980000996212993340 Data Sheet N en None Y pdf 4.0 N N PCA8565, Real time clock/calendar – Datasheet 375.6 KB PCA8565 N 1442051834928698774509 Packing Information 2 /docs/en/packing/SOT505-1_518.pdf 2015-02-02 1442131052160715945979 PSP 8 Feb 2, 2015 Packing Information TSSOP8; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or Y Ordering code (12NC) ending 518 None /docs/en/packing/SOT505-1_518.pdf English documents 239813 None 145666923842250347 2024-04-23 N /docs/en/packing/SOT505-1_518.pdf TSSOP8; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or Y Ordering code (12NC) ending 518 /docs/en/packing/SOT505-1_518.pdf documents 145666923842250347 Packing Information N en None Y pdf 1.0 N N TSSOP8; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or Y Ordering code (12NC) ending 518 239.8 KB SOT505-1_518 N 1442131052160715945979 /docs/en/packing/SOT505-1_118.pdf 2013-04-17 1442131705242712040486 PSP 9 Apr 15, 2013 Packing Information Packing info for TSSOP8 package None /docs/en/packing/SOT505-1_118.pdf English documents 218803 None 145666923842250347 2024-10-21 N /docs/en/packing/SOT505-1_118.pdf TSSOP8; Reel pack; SMD, 13"Q1/T1 Standard product orientationOrderable part number ending ,118 or JOrdering code (12NC) ending 118 /docs/en/packing/SOT505-1_118.pdf documents 145666923842250347 Packing Information N en None Y pdf 1.0 N N TSSOP8; Reel pack; SMD, 13"Q1/T1 Standard product orientationOrderable part number ending ,118 or JOrdering code (12NC) ending 118 218.8 KB SOT505-1_118 N 1442131705242712040486 Selector Guide 1 /docs/en/product-selector-guide/RTCSelectorGuideA4.pdf 2020-01-21 1579625550018748134969 PSP 10 Apr 17, 2023 Selector Guide Real Time Clocks Selector Guide. For highly accurate time-keeping, long battery life, and rugged environment applications, choose from NXP's extensive portfolio of RTCs. None /docs/en/product-selector-guide/RTCSelectorGuideA4.pdf English documents 1111554 None 553557935274807777 2024-04-12 N /docs/en/product-selector-guide/RTCSelectorGuideA4.pdf Real Time Clocks Selector Guide Brochure /docs/en/product-selector-guide/RTCSelectorGuideA4.pdf documents 553557935274807777 Selector Guide N en None Y pdf 5 N N Real Time Clocks Selector Guide Brochure 1.1 MB RTCSelectorGuideA4 N 1579625550018748134969 Supporting Information 1 /docs/en/supporting-information/Reflow_Soldering_Profile.pdf 2016-10-08 1442122749741692602431 PSP 11 Feb 17, 2014 Supporting Information Reflow Soldering temperature profile None /docs/en/supporting-information/Reflow_Soldering_Profile.pdf English documents 34577 None 371282830530968666 2024-11-28 N /docs/en/supporting-information/Reflow_Soldering_Profile.pdf Reflow Soldering Profile /docs/en/supporting-information/Reflow_Soldering_Profile.pdf documents 371282830530968666 Supporting Information N en None Y pdf 1.0 N N Reflow Soldering Profile 34.6 KB REFLOW_SOLDERING_PROFILE N 1442122749741692602431 User Guide 3 /docs/en/user-guide/UM10204.pdf 2016-07-12 1442125286808710770774 PSP 4 Oct 1, 2021 User Guide NXP Semiconductors developed a simple bidirectional 2-wire bus for efficient inter-IC control. This bus is called the Inter-IC or I2C-bus. Only two bus lines are required: a serial data line (SDA) and a serial clock line (SCL). Serial, 8-bit oriented, bidirectional data transfers can be made at up to 100 kbit/s in the Standard-mode, up to 400 kbit/s in the Fast-mode, up to 1 Mbit/s in the Fast-mode Plus (Fm+), or up to 3.4 Mbit/s in the High-speed mode. None /docs/en/user-guide/UM10204.pdf English documents 750958 None 132339537837198660 2024-10-24 N /docs/en/user-guide/UM10204.pdf I2C-bus specification and user manual /docs/en/user-guide/UM10204.pdf documents 132339537837198660 User Guide N en None Y pdf 7.0 N N I2C-bus specification and user manual 751.0 KB UM10204 N 1442125286808710770774 /docs/en/user-guide/UM10301.pdf 2016-07-11 1442125649798715943478 PSP 5 Jul 24, 2015 User Guide None /docs/en/user-guide/UM10301.pdf English documents 983634 None 132339537837198660 2025-01-10 N /docs/en/user-guide/UM10301.pdf User Manual for NXP Real Time Clocks PCF85x3, PCF85x63, PCA8565, PCF2123, and PCA21125 /docs/en/user-guide/UM10301.pdf documents 132339537837198660 User Guide N en None Y pdf 2.1 N N User Manual for NXP Real Time Clocks PCF85x3, PCF85x63, PCA8565, PCF2123, and PCA21125 983.6 KB UM10301 N 1442125649798715943478 /secured/assets/documents/en/user-guide/UM10528.pdf 2012-02-06 1442125429801702674389 PSP 6 Feb 6, 2012 User Guide Registration without Disclaimer /secured/assets/documents/en/user-guide/UM10528.pdf English documents 749626 None 132339537837198660 2025-02-10 Y /webapp/Download?colCode=UM10528 PCA9632 demonstration board OM13269 /secured/assets/documents/en/user-guide/UM10528.pdf documents 132339537837198660 User Guide N en Extended Y pdf 1.0 Y N PCA9632 demonstration board OM13269 749.6 KB UM10528 N 1442125429801702674389 true Y Products

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