PCF8570P

256 x 8-bit static low-voltage RAM with I2C-bus interface


The PCF8570 is a low power static CMOS RAM, organized as 256 words by 8-bits.

Addresses and data are transferred serially via a two-line bidirectional bus (I²C-bus). The built-in word address register is incremented automatically after each written or read data byte. Three address pins, A0, A1 and A2 are used to define the hardware address, allowing the use of up to 8 devices connected to the bus without additional hardware.

Features and benefits

  • Operating supply voltage 2.5 to 6.0 V
  • Low data retention voltage; minimum 1.0 V
  • Low standby current; maximum 15 µA
  • Power-saving mode; typical 50 nA
  • Serial input/output bus (I²C-bus)
  • Address by 3 hardware address pins
  • Automatic word address incrementing
  • Available in DIP8 and SO8 packages.
All information on this product information page is subject to the subsequent disclaimers:

Devices listed on this page should not be used for new designs!

This product has been discontinued.
Click here for discontinuation information.

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Show functional diagram

Block diagram: PCF8570P, PCF8570T
Block diagram: PCF8570P, PCF8570T

Parametrics of this product

Type numberPackage
PCF8570PSOT97-1
(DIP8)

Package

All type numbers in the table below are discontinued. See the table Discontinuation information at the bottom of this page for more information.

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
PCF8570P/F5PCF8570P/F5,1129351 549 00112Discontinued
Replacement product
SOT97-1
(DIP8)
TubePCF8570P

Outline drawing

Package VersionPackage NamePackage DescriptionReference CodesIssue Date
SOT97-1DIP8plastic dual in-line package; 8 leads (300 mil)SC-504-8 (EIAJ); MO-001 (JEDEC); 050G01 (IEC); 2003-02-13

Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
PCF8570P/F593515490011230-Sep-1331-Dec-13DN NXP-DN_201212003DNFull WithdrawalLimited Availability. Sole Source. Package got transferred.

Quality, reliability & chemical content

All type numbers in the table below are discontinued. See the table Discontinuation information at the bottom of this page for more information.

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
PCF8570P/F5PCF8570P/F5,112PCF8570P/F5Always Pb-free
Quality and reliability disclaimer

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Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
PCF8570P/F593515490011230-Sep-1331-Dec-13DN NXP-DN_201212003DNFull WithdrawalLimited Availability. Sole Source. Package got transferred.

Documentation for this product

File nameTitleTypeFormatDate
PCF8570256 x 8-bit static low-voltage RAM with I2C-bus interfaceData sheetpdf1999-01-06
AN10216I2C manualApplication notepdf2003-03-27
75016020Low-power GPIO expanders for portable applications; NXP 8/16-bit I2C/SMBus GPIO expanders PCA9534/35/35C for low-power applicationsLeafletpdf2007-06-01
75016535Versatile, easy-to-use GPIO expanders; NXP 4/8/16-bit I2C/SMBus GPIO expanders PCA9536/54/54A/55Leafletpdf2008-08-01
75017424NXP I2C-bus solutions 2013: Smart, simple solutions for the 12 most common design concernsLeafletpdf2013-05-23
design_con_2003_tecforum_i2c_bus_overviewDesignCon 2003 TecForum I 2 C Bus OverviewOther typepdf2003-01-27
39340011I2C-bus specification (version 2.1)Other typepdf2000-01-01
UM10204I2C-bus specification and user manualUser manualpdf2007-06-26
UM10206I2C Demonstration Board 2005-1 Quick Start GuideUser manualpdf2006-06-13
UM10204_JAI2C-bus specification and user manualUser manualpdf2013-04-03

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