PCF2127: Accurate RTC with integrated quartz crystal for industrial applications

The PCF2127 is a CMOS Real Time Clock (RTC) and calendar with an integrated Temperature Compensated Crystal (Xtal) Oscillator (TCXO) and a 32.768 kHz quartz crystal optimized for very high accuracy and very low power consumption. The PCF2127 has 512 bytes of general-purpose static RAM, a selectable I²C-bus or SPI-bus, a backup battery switch-over circuit, a programmable watchdog function, a timestamp function, and many other features.

SOT163-1
Data Sheets (1)
Name/DescriptionModified Date
Accurate RTC with integrated quartz crystal for industrial applications (REV 8.0) PDF (1.1 MB) PCF212719 Dec 2014
Application Notes (3)
Name/DescriptionModified Date
Application and soldering information for the PCA2129 and PCF2129 TCXO RTCs (REV 3.1) PDF (170.0 kB) AN1118606 Mar 2015
Application and soldering information for the PCF2127 TCXO RTC (REV 2.1) PDF (169.0 kB) AN1126606 Mar 2015
ESD and EMC sensitivity of IC (REV 1.0) PDF (745.0 kB) AN1085314 Mar 2013
Users Guides (2)
Name/DescriptionModified Date
User manual for the accurate RTC demo board OM13513 containing PCF2127T and PCF2129AT (REV 2.0) PDF (1.2 MB) UM1076205 Oct 2015
Store and transport requirements (REV 3.0) PDF (325.0 kB) UM1056910 Mar 2015
Brochures (1)
Name/DescriptionModified Date
NXP® aRTCs PCF2127, PCA2129 and PCF2129: High-precision aRTCs with embedded quartz crystal (REV 1.0) PDF (908.0 kB) 7501756818 Jun 2014
Package Information (2)
Name/DescriptionModified Date
plastic small outline package; 16 leads; body width 7.5 mm (REV 1.0) PDF (317.0 kB) SOT162-108 Feb 2016
plastic small outline package; 20 leads; body width 7.5 mm (REV 1.0) PDF (335.0 kB) SOT163-108 Feb 2016
Packing (2)
Name/DescriptionModified Date
SO20; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or... (REV 1.0) PDF (277.0 kB) SOT163-1_51816 Dec 2014
SO16; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or... (REV 1.0) PDF (271.0 kB) SOT162-1_51825 Nov 2014
Supporting Information (4)
Name/DescriptionModified Date
Reflow Soldering Profile (REV 1.0) PDF (34.0 kB) REFLOW_SOLDERING_PROFILE30 Sep 2013
Wave Soldering Profile (REV 1.0) PDF (20.0 kB) WAVE_SOLDERING_PROFILE30 Sep 2013
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
ProductPackage versionresolutionInterfaceVDD (interface) (V)watchdog timerProgrammable alarmcountdown timerVDD (clock) (V)Leap year trackingIDD (nA)temperature compensationTamb (Cel)AEC-Q100 compliant
Package Information
Product IDPackage DescriptionOutline VersionReflow/Wave SolderingPackingProduct StatusPart NumberOrdering code(12NC)MarkingChemical ContentRoHS / Pb Free / RHFLeadFree Conversion DateIFR(FIT)MTBF(hour)MSLMSL LF
PCF2127AT/2SOT163-1Reflow_Soldering_Profile Wave_Soldering_Profile
Reflow_Soldering_Profile Wave_Soldering_Profile
Reel 13" Q1/T1 in DrypackActivePCF2127AT/2Y (9352 998 67518)Standard MarkingPCF2127AT/252E833
PCF2127T/2SOT162-1SO-SOJ-REFLOW SO-SOJ-WAVE
SO-SOJ-REFLOW SO-SOJ-WAVE
Reel 13" Q1/T1 in DrypackActivePCF2127T/2Y (9352 998 66518)Standard MarkingPCF2127T/2Always Pb-free52E833
Accurate RTC with integrated quartz crystal for industrial applications PCF2127
Application and soldering information for the PCA2129 and PCF2129 TCXO RTCs pca2129t
Application and soldering information for the PCF2127 TCXO RTC PCF2127
ESD and EMC sensitivity of IC pcf8576d_automotive
User manual for the accurate RTC demo board OM13513 containing PCF2127T and PCF2129AT PCF2129
Store and transport requirements pcf8576d_automotive
NXP® aRTCs PCF2127, PCA2129 and PCF2129: High-precision aRTCs with embedded quartz crystal PCF2129
SOT163-1 LPC1112FD20
Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
SO20; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or... NPIC6C4894_Q100
plastic small outline package; 16 leads; body width 7.5 mm TJF1052IT
Footprint for reflow soldering NPIC6C596A_Q100
Footprint for wave soldering NPIC6C596A_Q100
SO16; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or... TJF1052IT
SA615
TJF1052IT