Clock and Calendar with 240 X 8-bit RAM

PCF8583 End of Life
  • This page contains information on a product that is no longer manufactured (discontinued). Specifications and information herein are available for historical reference only.

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The PCF8583 is a clock and calendar chip, based on a 2048 bit static CMOS1 RAM organized as 256 words by 8 bits. Addresses and data are transferred serially via the two-line bidirectional I²C-bus. The built-in word address register is incremented automatically after each written or read data byte. Address pin A0 is used for programming the hardware address, allowing the connection of two devices to the bus without additional hardware.

The built-in 32.768 kHz oscillator circuit and the first 8 bytes of the RAM are used for the clock, calendar, and counter functions. The next 8 bytes can be programmed as alarm registers or used as free RAM space. The remaining 240 bytes are free RAM locations.

Block Diagram

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Clock and Calendar with 240 X 8-bit RAM

PCF8583 Block Diagram

PCF8583BS, PCF8583P, PCF8583T, PCF8583U

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Features

Key Features

  • I²C-bus interface operating supply voltage: 2.5 V to 6 V
  • Clock operating supply voltage 1.0 V to 6.0 V at 0 ℃ to +70 ℃
  • 240 × 8-bit low-voltage RAM
  • Data retention voltage: 1.0 V to 6.0 V
  • Operating current (at fSCL = 0 Hz): max 50 μA
  • Clock function with four year calendar
  • Universal timer with alarm and overflow indication
  • 24 hour or 12 hour format
  • 32.768 kHz or 50 Hz time base
  • Serial input and output bus (I²C-bus)
  • Automatic word address incrementing
  • Programmable alarm, timer, and interrupt function
  • Target addresses: A1h or A3h for reading, A0h or A2h for writing

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N true 0 PSPPCF8583en 9 Application Note Application Note t789 1 Brochure Brochure t518 1 Data Sheet Data Sheet t520 1 Package Information Package Information t790 1 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 6.0 English 1442068305087722135376 PSP 549.0 KB None None documents None 1442068305087722135376 /docs/en/data-sheet/PCF8583.pdf 549000 /docs/en/data-sheet/PCF8583.pdf PCF8583 documents N 2015-09-12 Clock and calendar with 240 x 8-bit RAM /docs/en/data-sheet/PCF8583.pdf /docs/en/data-sheet/PCF8583.pdf Data Sheet N 980000996212993340 2022-12-07 pdf en Oct 6, 2010 980000996212993340 Data Sheet Y N Clock and calendar with 240 x 8-bit RAM Application Note Application Note 1 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 User Guide User Guide 3 3 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 4 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 5 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 6 1.0 English 1442124656944726362331 PSP 1.1 MB None None documents None 1442124656944726362331 /docs/en/brochure/75016543.pdf 1091243 /docs/en/brochure/75016543.pdf 75016543 documents N N 2016-10-08 Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliances /docs/en/brochure/75016543.pdf /docs/en/brochure/75016543.pdf Brochure N 712453003803778552 2024-11-28 pdf N en Apr 8, 2018 712453003803778552 Brochure Y N Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliances Package Information Package Information 1 7 1.0 English 1455078738608721576228 PSP 275.3 KB None None documents None 1455078738608721576228 /docs/en/package-information/SOT176-1.pdf 275253 /docs/en/package-information/SOT176-1.pdf SOT176-1 documents N N 2016-02-12 plastic small outline package; 8 leads; body width 7.5 mm /docs/en/package-information/SOT176-1.pdf /docs/en/package-information/SOT176-1.pdf Package Information N 302435339416912908 2023-10-17 pdf N en Feb 8, 2016 302435339416912908 Package Information Y N plastic small outline package; 8 leads; body width 7.5 mm Selector Guide Selector Guide 1 8 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 9 1.0 English Footprint for reflow soldering 1442122730480711091281 PSP 8.8 KB None None documents None 1442122730480711091281 /docs/en/supporting-information/SO-SOJ-REFLOW.pdf 8792 /docs/en/supporting-information/SO-SOJ-REFLOW.pdf SO-SOJ-REFLOW documents N N 2013-07-15 Footprint for reflow soldering /docs/en/supporting-information/SO-SOJ-REFLOW.pdf /docs/en/supporting-information/SO-SOJ-REFLOW.pdf Supporting Information N 371282830530968666 2024-10-21 pdf N en Oct 8, 2009 371282830530968666 Supporting Information Y N Footprint for reflow soldering false 0 PCF8583 downloads en true 1 Y PSP Application Note 1 /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 Brochure 1 /docs/en/brochure/75016543.pdf 2016-10-08 1442124656944726362331 PSP 6 Apr 8, 2018 Brochure None /docs/en/brochure/75016543.pdf English documents 1091243 None 712453003803778552 2024-11-28 N /docs/en/brochure/75016543.pdf Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliances /docs/en/brochure/75016543.pdf documents 712453003803778552 Brochure N en None Y pdf 1.0 N N Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliances 1.1 MB 75016543 N 1442124656944726362331 Data Sheet 1 /docs/en/data-sheet/PCF8583.pdf 2015-09-12 1442068305087722135376 PSP 1 Oct 6, 2010 Data Sheet None /docs/en/data-sheet/PCF8583.pdf English documents 549000 None 980000996212993340 2022-12-07 /docs/en/data-sheet/PCF8583.pdf Clock and calendar with 240 x 8-bit RAM /docs/en/data-sheet/PCF8583.pdf documents 980000996212993340 Data Sheet N en None Y pdf 6.0 N Clock and calendar with 240 x 8-bit RAM 549.0 KB PCF8583 N 1442068305087722135376 Package Information 1 /docs/en/package-information/SOT176-1.pdf 2016-02-12 1455078738608721576228 PSP 7 Feb 8, 2016 Package Information None /docs/en/package-information/SOT176-1.pdf English documents 275253 None 302435339416912908 2023-10-17 N /docs/en/package-information/SOT176-1.pdf plastic small outline package; 8 leads; body width 7.5 mm /docs/en/package-information/SOT176-1.pdf documents 302435339416912908 Package Information N en None Y pdf 1.0 N N plastic small outline package; 8 leads; body width 7.5 mm 275.3 KB SOT176-1 N 1455078738608721576228 Selector Guide 1 /docs/en/product-selector-guide/RTCSelectorGuideA4.pdf 2020-01-21 1579625550018748134969 PSP 8 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/SO-SOJ-REFLOW.pdf 2013-07-15 1442122730480711091281 PSP 9 Oct 8, 2009 Supporting Information Footprint for reflow soldering None /docs/en/supporting-information/SO-SOJ-REFLOW.pdf English documents 8792 None 371282830530968666 2024-10-21 N /docs/en/supporting-information/SO-SOJ-REFLOW.pdf Footprint for reflow soldering /docs/en/supporting-information/SO-SOJ-REFLOW.pdf documents 371282830530968666 Supporting Information N en None Y pdf 1.0 N N Footprint for reflow soldering 8.8 KB SO-SOJ-REFLOW N 1442122730480711091281 User Guide 3 /docs/en/user-guide/UM10204.pdf 2016-07-12 1442125286808710770774 PSP 3 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 4 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 5 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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