Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsInterface ICsInterface IC - I/O extensions POR I²C, SMBus 400 kHz SOIC 24

FEATURES

DB, DBQ, DGV, DW, OR PW PACKAGE

(TOP VIEW)

INT

P00

P01

P02

P03

P04

P05

P06

P07

GND

SDA

SCL

P17

P16

P15

P14

P13

P12

P11

P10

24 23 22 21 20

8 9 10 11

RGE PACKAGE

(TOP VIEW)

INT

P10

P11 SDA

P06

P07

GND

SCL

P12

P00

P01

P02

P03

P04

P05

P17

P16

P15

P14

P13

DESCRIPTION/ORDERINGINFORMATION

PCA9555

www.ti.com

.........................................................................................................................................................SCPS131E–AUGUST2005–REVISEDMAY2008

REMOTE16-BITI

CANDSMBusI/OEXPANDER

WITHINTERRUPTOUTPUTANDCONFIGURATIONREGISTERS

•LowStandby-CurrentConsumptionof•PolarityInversionRegister

1µAMax

•LatchedOutputsWithHigh-CurrentDrive

•I

CtoParallelPortExpanderCapabilityforDirectlyDrivingLEDs

•Open-DrainActive-LowInterruptOutput•Latch-UpPerformanceExceeds100mAPer

JESD78,ClassII

•5-VTolerantI/OPorts

•ESDProtectionExceedsJESD22

•CompatibleWithMostMicrocontrollers

–2000-VHuman-BodyModel(A114-A)

•400-kHzFastI

CBus

–200-VMachineModel(A115-A)

•AddressbyThreeHardwareAddressPinsfor

UseofuptoEightDevices–1000-VCharged-DeviceModel(C101)

This16-bitI/Oexpanderforthetwo-linebidirectionalbus(I

C)isdesignedfor2.3-Vto5.5-VV

operation.It

providesgeneral-purposeremoteI/OexpansionformostmicrocontrollerfamiliesviatheI

Cinterface[serialclock

(SCL),serialdata(SDA)].

ThePCA9555consistsoftwo8-bitConfiguration(inputoroutputselection),InputPort,OutputPort,andPolarity

Inversion(activehighoractivelowoperation)registers.Atpoweron,theI/Osareconfiguredasinputs.The

systemmastercanenabletheI/OsaseitherinputsoroutputsbywritingtotheI/Oconfigurationbits.Thedatafor

eachinputoroutputiskeptinthecorrespondingInputorOutputregister.ThepolarityoftheInputPortregister

canbeinvertedwiththePolarityInversionregister.Allregisterscanbereadbythesystemmaster.

ThesystemmastercanresetthePCA9555intheeventofatimeoutorotherimproperoperationbyutilizingthe

power-onresetfeature,whichputstheregistersintheirdefaultstateandinitializestheI

C/SMBusstatemachine.

ThePCA9555open-draininterrupt(INT)outputisactivatedwhenanyinputstatediffersfromitscorresponding

InputPortregisterstateandisusedtoindicatetothesystemmasterthataninputstatehaschanged.

INTcanbeconnectedtotheinterruptinputofamicrocontroller.Bysendinganinterruptsignalonthisline,the

remoteI/Ocaninformthemicrocontrollerifthereisincomingdataonitsportswithouthavingtocommunicatevia

theI

Cbus.Thus,thePCA9555canremainasimpleslavedevice.

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Not Recommended for New Designs

Summary of content (40 pages)

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Not Recommended for New Designs PCA9555 www.ti.com .........................................................................................................................................................
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PCA9555 Not Recommended for New Designs SCPS131E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.com DESCRIPTION/ORDERING INFORMATION (CONTINUED) The device outputs (latched) have high-current drive capability for directly driving LEDs. Although pin-to-pin and I2C-address is compatible with the PCF8575, software changes are required due to the enhancements.
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Not Recommended for New Designs PCA9555 www.ti.com ......................................................................................................................................................... SCPS131E – AUGUST 2005 – REVISED MAY 2008 TERMINAL FUNCTIONS NO. SOIC (D), SSOP (DB), QSOP (DBQ), TSSOP (PW), AND TVSOP (DGV) QFN (RGE) NAME DESCRIPTION 1 22 INT Interrupt output. Connect to VCC through a pullup resistor. 2 23 A1 Address input 1. Connect directly to VCC or ground.
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PCA9555 Not Recommended for New Designs SCPS131E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.com LOGIC DIAGRAM (POSITIVE LOGIC) INT A0 A1 A2 SCL SDA PCA9555 1 Interrupt Logic LP Filter 21 2 P07−P00 3 22 23 Input Filter I2C Bus Control Shift Register 16 Bits I/O Port P17−P10 Write Pulse VCC GND 4 Read Pulse 24 12 Power-On Reset A.
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PCA9555 Not Recommended for New Designs www.ti.com .........................................................................................................................................................
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PCA9555 Not Recommended for New Designs SCPS131E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.com I2C Interface The bidirectional I2C bus consists of the serial clock (SCL) and serial data (SDA) lines. Both lines must be connected to a positive supply via a pullup resistor when connected to the output stages of a device.
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PCA9555 Not Recommended for New Designs www.ti.com ......................................................................................................................................................... SCPS131E – AUGUST 2005 – REVISED MAY 2008 Data Output by Transmitter NACK Data Output by Receiver ACK SCL From Master 1 2 8 9 S Start Condition Clock Pulse for Acknowledgment Figure 3.
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PCA9555 Not Recommended for New Designs SCPS131E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.com Device Address Figure 4 shows the address byte of the PCA9555. R/W Slave Address 0 1 0 0 A2 A1 A0 Fixed Programmable Figure 4.
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PCA9555 Not Recommended for New Designs www.ti.com ......................................................................................................................................................... SCPS131E – AUGUST 2005 – REVISED MAY 2008 Register Descriptions The Input Port registers (registers 0 and 1) reflect the incoming logic levels of the pins, regardless of whether the pin is defined as an input or an output by the Configuration register. It only acts on read operation.
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PCA9555 Not Recommended for New Designs SCPS131E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.com Interrupt (INT) Output An interrupt is generated by any rising or falling edge of the port inputs in the input mode. After time, tiv, the signal INT is valid.
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PCA9555 Not Recommended for New Designs www.ti.com ......................................................................................................................................................... SCPS131E – AUGUST 2005 – REVISED MAY 2008 Reads The bus master first must send the PCA9555 address with the least-significant bit set to a logic 0 (see Figure 4 for device address). The command byte is sent after the address and determines which register is accessed.
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PCA9555 Not Recommended for New Designs SCPS131E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.com 1 SCL 2 3 4 5 6 7 8 9 I0.x SDA S 0 1 0 0 A2 A1 A0 1 R/W A 00 Acknowledge From Slave I1.x A 10 I0.x A 03 Acknowledge From Master Acknowledge From Master I1.
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PCA9555 Not Recommended for New Designs www.ti.com ......................................................................................................................................................... SCPS131E – AUGUST 2005 – REVISED MAY 2008 ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) MIN MAX VCC Supply voltage range –0.5 6 V VI Input voltage range (2) –0.5 6 V (2) –0.
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PCA9555 Not Recommended for New Designs SCPS131E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VIK Input diode clamp voltage II = –18 mA VPOR Power-on reset voltage VI = VCC or GND, IO = 0 VCC MIN 2.3 V to 5.
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PCA9555 Not Recommended for New Designs www.ti.com .........................................................................................................................................................
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PCA9555 Not Recommended for New Designs SCPS131E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS TA = 25°C (unless otherwise noted) SUPPLY CURRENT vs TEMPERATURE STANDBY SUPPLY CURRENT vs TEMPERATURE 55 70 30 SCL = V CC 50 V CC = 5 V ICC – Supply Current – nA 40 f SCL = 400 kHz I/Os Unloaded 35 30 25 V CC = 3.
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PCA9555 Not Recommended for New Designs www.ti.com ......................................................................................................................................................... SCPS131E – AUGUST 2005 – REVISED MAY 2008 TYPICAL CHARACTERISTICS (continued) TA = 25°C (unless otherwise noted) I/O SOURCE CURRENT vs OUTPUT HIGH VOLTAGE SUPPLY CURRENT vs NUMBER OF I/Os HELD LOW 300 V CC = 5 V V OH – Output High Voltage – mV TA = 25°C 35 30 25 20 15 TA = 125°C 10 5 0 0.0 0.
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PCA9555 Not Recommended for New Designs SCPS131E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.
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PCA9555 Not Recommended for New Designs www.ti.com ......................................................................................................................................................... SCPS131E – AUGUST 2005 – REVISED MAY 2008 PARAMETER MEASUREMENT INFORMATION (continued) VCC RL = 4.
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PCA9555 Not Recommended for New Designs SCPS131E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) DUT Pn CL = 100 pF GND P-PORT LOAD CONFIGURATION 0.7 × VCC SCL P00 A P17 0.3 × VCC Slave ACK ÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎ SDA Pn tpv (see Note A) Unstable Data Last Stable Bit WRITE MODE (R/W = 0) 0.
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PCA9555 Not Recommended for New Designs www.ti.com ......................................................................................................................................................... SCPS131E – AUGUST 2005 – REVISED MAY 2008 PARAMETER MEASUREMENT INFORMATION (continued) VCC RL = 1 kΩ DUT SDA DUT CL = 50 pF SDA LOAD CONFIGURATION Pn CL = 100 pF P-PORT LOAD CONFIGURATION Start SCL ACK or Read Cycle SDA 0.3 y VCC tREC RESET VCC/2 tREC tw Pn VCC/2 tRESET A.
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PCA9555 Not Recommended for New Designs SCPS131E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.com APPLICATION INFORMATION Figure 15 shows an application in which the PCA9555 can be used. Subsystem 1 (e.g., Temperature Sensor) INT VCC (5 V) VCC 10 kW 10 kW 10 kW 24 10 kW 22 SCL Master Controller SDA 23 1 INT Subsystem 2 (e.g.
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Not Recommended for New Designs PCA9555 www.ti.com ......................................................................................................................................................... SCPS131E – AUGUST 2005 – REVISED MAY 2008 Minimizing ICC When I/O Is Used to Control LED When an I/O is used to control an LED, normally it is connected to VCC through a resistor as shown in Figure 15. Because the LED acts as a diode, when the LED is off, the I/O VIN is about 1.2 V less than VCC.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 9-Oct-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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PACKAGE MATERIALS INFORMATION www.ti.com 16-Aug-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device PCA9555DBQR Package Package Pins Type Drawing SSOP SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant DBQ 24 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 PCA9555DBR SSOP DB 24 2000 330.0 16.4 8.2 8.8 2.5 12.0 16.0 Q1 PCA9555DGVR TVSOP DGV 24 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 16-Aug-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) PCA9555DBQR SSOP DBQ 24 2500 367.0 367.0 38.0 PCA9555DBR SSOP DB 24 2000 367.0 367.0 38.0 PCA9555DGVR TVSOP DGV 24 2000 367.0 367.0 35.0 PCA9555DWR SOIC DW 24 2000 367.0 367.0 45.0 PCA9555PWR TSSOP PW 24 2000 367.0 367.0 38.
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MECHANICAL DATA MPDI006B – SEPTEMBER 2001 – REVISED APRIL 2002 N (R–PDIP–T24) PLASTIC DUAL–IN–LINE 1.222 (31,04) MAX 24 13 0.360 (9,14) MAX 1 12 0.070 (1,78) MAX 0.200 (5,08) MAX 0.425 (10,80) MAX 0.020 (0,51) MIN Seating Plane 0.125 (3,18) MIN 0.100 (2,54) 0’–15’ 0.021 (0,53) 0.015 (0,38) 0.010 (0,25) 0.010 (0,25) NOM 4040051–3/D 09/01 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C.
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MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.