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PCA8581;PCA8581C

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General description

The PCA8581 and PCA8581C are low power CMOS EEPROMs with standard and wide operating voltages:

4.5 to 5.5 V (PCA8581)
2.5 to 6.0 V (PCA8581C).

In the following text, the generic term ?PCA8581? is used to refer to both types in all packages except when otherwise specified.

The PCA8581 is organized as 128 words of 8-bytes.

Addresses and data are transferred serially via a two-line bidirectional bus (I 2 C-bus). The built-in word address register is incremented automatically after each written or read data byte. All bytes can be read in a single operation. Up to 8 bytes can be written in one operation, reducing the total write time per 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

  • Operating supply voltage:
    - 4.5 to 5.5 V (PCA8581)
    - 2.5 to 6.0 V (PCA8581C)
  • Integrated voltage multiplier and timer for writing (no external components required)
  • Automatic erase before write
  • Low standby current; maximum 10 mA
  • 8-byte page write mode
  • Serial input/output bus (I2C-bus)
  • Address by 3 hardware address pins
  • Automatic word address incrementing
  • Designed for minimum 10000 write cycles per byte
  • 10 years minimum non-volatile data retention
  • Infinite number of read cycles
  • Pin and address compatibility to PCF8570C and PCF8582
  • Operating ambient temperature: -25 to +85 °C.

Products/packages

Type numberNorth American Type numberOrdering code (12NC)Product statusPackagePackingMarkingChemical contentLeadfree conversion date
PCA8581CT/6PCA8581CTD9352 757 25112Volume productionSOT96-1
(SO8)
TubeStandard MarkingPCA8581CT/6
week 43, 2004
PCA8581CT/6PCA8581CTD-T9352 757 25118Volume productionSOT96-1
(SO8)
Tape reel smdStandard MarkingPCA8581CT/6
week 43, 2004
PCA8581P/F6PCA8581PN9350 576 80112Volume productionSOT97-1
(DIP8)
TubeStandard MarkingPCA8581P/F6
Always Pb-free
PCA8581T/6PCA8581TD9352 769 87112Volume productionSOT96-1
(SO8)
TubeStandard MarkingPCA8581T/6
week 43, 2004
PCA8581T/6PCA8581TD-T9352 769 87118Volume productionSOT96-1
(SO8)
Tape reel smdStandard MarkingPCA8581T/6
week 43, 2004

Pricing/ordering/availability

Type numberOrdering code(12NC)Indicative price/unit($)RegionDistributorIn stockInventory dateBuy onlineSamples
PCA8581CT/69352 757  25112  0.5900NAFUTURE ELECTRONICS8567/4/2008 Buy online Order samples
   NAARROW ELECTRONICS957/4/2008 Buy online  
PCA8581CT/69352 757  25118  0.5900NADIGI-KEY CORPORATION2,5006/29/2008 Buy online not available
   NADIGI-KEY CORPORATION1,7036/29/2008 Buy online  
PCA8581P/F69350 576  80112  1.3000NAARROW ELECTRONICS1,9967/4/2008 Buy online Order samples
PCA8581T/69352 769  87112  0.5800     not available
PCA8581T/69352 769  87118  0.5800      Order samples

Applications

  • Fiber optic receivers, analog and digital
  • Current-to-Voltage converters
  • Wide-band gain block
  • Medical and scientific Instrumentation
  • Sensor preamplifiers
  • Single-ended to differential conversion
  • Low noise RF amplifiers
  • RF signal processing


Related applications
LCD display - discretes focus
PDA - discretes focus
Motherboard components
50-60 Hz CRT integrated DTV (TV210D)
Mid-range integrated DTV (TV810)
Intelligent washing machine
Transceiver board
Power amplifier board
Main CPU board
Set-top box - MMS functionality

Block diagrams/pinning

Technical documents

Application Notes

AN10216_1; I2C manual (27-Mar-03)
AN10441_1; Level shifting techniques in I<sup>2</sup>C-bus design (20-Jun-07)

Support Documents

75015669; Continuous innovation. Timeless lifespan. (01-Sep-06)
design_con_2003_tecforum_i2c_bus_overview; DesignCon 2003 TecForum I 2 C Bus Overview (2003-01-27)
75011212; I2C 2002-1A Evaluation Board Kit (2003-03-01)
75012744; I2C Bus Solutions 2004 (2004-02-01)
UM10206_1; I2C Demonstration Board 2005-1 Quick Start Guide (13-Jun-06)
39340011; I2C-bus specification (latest version) (2003-04-22)
39340011_jp; I2C-bus specification (latest version) (2004-06-22)
UM10204_3; I2C-bus specification and user manual (26-Jun-07)
75007416; LCD drivers linecard (2001-11-23)
75014395; Your connection to I 2 C,UART,CAN,and USB Connecting with Philips Wired Connectivity (2005-04-01)

Parametrics/similar products

Type numberPackageOperating
temp.(Cel)
Memory Size(kBits)I²C-bus(kHz)Operating voltage(VDC)# of Addresses
PCA8581CT/6SOT96-1
(SO8)
-25~85 1 100 2.5~6.0 8
PCA8581P/F6SOT97-1
(DIP8)
-25~85 1 100 4.5~5.5 8
PCA8581T/6SOT96-1
(SO8)
-25~85 1 100 4.5~5.5 8

Similar products

PCA8581;PCA8581C links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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