PCF8583T: Clock and calendar with 240 x 8-bit RAM

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.

PCF8583T: Product Block Diagram
sot176-1_3d
Data Sheets (1)
Name/DescriptionModified Date
Clock and calendar with 240 x 8-bit RAM (REV 6.0) PDF (549.0 kB) PCF858306 Oct 2010
Application Notes (1)
Name/DescriptionModified Date
ESD and EMC sensitivity of IC (REV 1.0) PDF (745.0 kB) AN1085314 Mar 2013
Users Guides (5)
Name/DescriptionModified Date
User Manual for NXP® Real Time Clocks PCF85x3, PCF85x63, PCA8565, PCF2123, and PCA21125 (REV 2.1) PDF (961.0 kB) UM1030124 Jul 2015
Store and transport requirements (REV 3.0) PDF (325.0 kB) UM1056910 Mar 2015
I2C-bus specification and user manual (REV 6.0) PDF (1.4 MB) UM1020428 Apr 2014
I2C-bus specification and user manual (REV 5.0) PDF (1.6 MB) UM10204_JA03 Apr 2013
I2C Demonstration Board 2005-1 Quick Start Guide (REV 1.0) PDF (261.0 kB) UM1020613 Jun 2006
Brochures (2)
Name/DescriptionModified Date
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns (REV 1.0) PDF (3.5 MB) 7501754001 Aug 2014
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... (REV 1.0) PDF (1.1 MB) 7501654301 Jun 2008
Package Information (1)
Name/DescriptionModified Date
plastic small outline package; 8 leads; body width 7.5 mm (REV 1.0) PDF (269.0 kB) SOT176-108 Feb 2016
Supporting Information (2)
Name/DescriptionModified Date
Footprint for reflow soldering (REV 1.0) PDF (9.0 kB) SO-SOJ-REFLOW08 Oct 2009
Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE08 Oct 2009
Ordering Information
ProductStatusPackage versionpackage versionresolutionInterfaceinterfaceVDD (interface) (V)watchdog timerprogrammable alarmProgrammable alarmcountdown timerstop-watch modeSpecial featuresVDD (clock) (V)leap year trackingLeap year trackingIDD (nA)temperature compensationTamb (Cel)AEC-Q100 compliant
PCF8583T/5ActiveSOT176-11/100th sec to yearI2C2.5 to 6.0noyesyesno1.0 to 6.0no10000no-40 to +85no
PCF8583T/F5No Longer ManufacturedSOT176-11/100th sec to yearI2C2.5 to 6.0noyesyesno1.0 to 6.0no10000no-40 to +85no
PCF8583T/F4No Longer ManufacturedSOT176-11/100th sec to yearI2C2.5 to 6.0noyesyesno1.0 to 6.0no10000no-40 to +85no
Package Information
Product IDPackage DescriptionOutline VersionReflow/Wave SolderingPackingProduct StatusPart NumberOrdering code(12NC)MarkingChemical ContentRoHS / Pb Free / RHFLeadFree Conversion DateIFR(FIT)MTBF(hour)MSLMSL LF
PCF8583T/5SOT176-1SO-SOJ-REFLOW SO-SOJ-WAVE
SO-SOJ-REFLOW SO-SOJ-WAVE
Reel 13" Q1/T1 in DrypackActivePCF8583T/5,518 (9352 765 39518)8583TPCF8583T/5week 5, 200552E822
Tube in DrypackDiscontinuedPCF8583T/5,512 (9352 765 39512)8583TPCF8583T/5week 5, 200552E822
Clock and calendar with 240 x 8-bit RAM PCF8583T
ESD and EMC sensitivity of IC pcf8576d_automotive
User Manual for NXP® Real Time Clocks PCF85x3, PCF85x63, PCA8565, PCF2123, and PCA21125 pca8565ts
Store and transport requirements pcf8576d_automotive
I2C-bus specification and user manual pca9685pw
I2C-bus specification and user manual pca9685pw
I2C Demonstration Board 2005-1 Quick Start Guide pca9685pw
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns pca9685pw
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... PMEG6010CE_AUTOMOTIVE
plastic small outline package; 8 leads; body width 7.5 mm PCF8583T
Footprint for reflow soldering NPIC6C596A_Q100
Footprint for wave soldering NPIC6C596A_Q100
PCF8583
PCF8583