PCA9555 datasheet, PDF - EEWORLD Datasheet

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PCA9555: Description16-bit I2C and SMBus I/O port with interrupt; File Size172KB，34 Pages; ManufacturerNXP; Websitehttps://www.nxp.com

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PCA9555 Overview

16-bit I2C and SMBus I/O port with interrupt

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PCA9555

16-bit I

C-bus and SMBus I/O port with interrupt

Rev. 08 — 22 October 2009

Product data sheet

1. General description

The PCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallel

Input/Output (GPIO) expansion for I

C-bus/SMBus applications and was developed to

enhance the NXP Semiconductors family of I

C-bus I/O expanders. The improvements

include higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O

conﬁguration, and smaller packaging. I/O expanders provide a simple solution when

additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc.

The PCA9555 consists of two 8-bit Conﬁguration (Input or Output selection); Input, Output

and Polarity Inversion (active HIGH or active LOW operation) registers. The system

master can enable the I/Os as either inputs or outputs by writing to the I/O conﬁguration

bits. The data for each Input or Output is kept in the corresponding Input or Output

C-bus

address compatible with the PCF8575, software changes are required due to the

enhancements, and are discussed in

Application Note AN469.

The PCA9555 open-drain interrupt output is activated when any input state differs from its

corresponding input port register state and is used to indicate to the system master that

an input state has changed. The power-on reset sets the registers to their default values

and initializes the device state machine.

Three hardware pins (A0, A1, A2) vary the ﬁxed I

C-bus address and allow up to eight

devices to share the same I

C-bus/SMBus. The ﬁxed I

C-bus address of the PCA9555 is

the same as the PCA9554, allowing up to eight of these devices in any combination to

share the same I

C-bus/SMBus.

2. Features

Operating power supply voltage range of 2.3 V to 5.5 V

5 V tolerant I/Os

Polarity Inversion register

Active LOW interrupt output

Low standby current

Noise ﬁlter on SCL/SDA inputs

No glitch on power-up

Internal power-on reset

16 I/O pins which default to 16 inputs

0 Hz to 400 kHz clock frequency

ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per

JESD22-A115, and 1000 V CDM per JESD22-C101

PCA9555 Related Products

	PCA9555	PCA9555BS	PCA9555HF	PCA9555N	PCA9555PW
Description	16-bit I2C and SMBus I/O port with interrupt	16 I/O, PIA-GENERAL PURPOSE, PQCC24	16 I/O, PIA-GENERAL PURPOSE, PQCC24	16 I/O, PIA-GENERAL PURPOSE, PQCC24	16 I/O, PIA-GENERAL PURPOSE, PDSO24
Is it lead-free?	-	Lead free	-	Lead free	Lead free
Is it Rohs certified?	-	conform to	conform to	conform to	conform to
Maker	-	NXP	NXP	NXP	NXP
Parts packaging code	-	QFN	QFN	DIP	TSSOP
package instruction	-	HVQFN-24	HWQFN-24	DIP, DIP24,.6	TSSOP, TSSOP24,.25
Contacts	-	24	24	24	24
Reach Compliance Code	-	compliant	compliant	unknow	compli
ECCN code	-	EAR99	EAR99	EAR99	EAR99
JESD-30 code	-	S-PQCC-N24	S-PQCC-N24	R-PDIP-T24	R-PDSO-G24
JESD-609 code	-	e4	e4	e3	e4
length	-	4 mm	4 mm	31.7 mm	7.8 mm
Humidity sensitivity level	-	1	1	-	1
Number of digits	-	16	16	16	16
Number of I/O lines	-	16	16	16	16
Number of ports	-	2	2	2	2
Number of terminals	-	24	24	24	24
Maximum operating temperature	-	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	HVQCCN	HVQCCN	DIP	TSSOP
Encapsulate equivalent code	-	LCC24,.16SQ,20	LCC24,.16SQ,20	DIP24,.6	TSSOP24,.25
Package shape	-	SQUARE	SQUARE	RECTANGULAR	RECTANGULAR
Package form	-	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	IN-LINE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	-	260	260	245	260
power supply	-	2.5/5 V	2.5/5 V	2.5/5 V	2.5/5 V
Certification status	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	-	1 mm	0.8 mm	5.1 mm	1.1 mm
Maximum supply voltage	-	5.5 V	5.5 V	5.5 V	5.5 V
Minimum supply voltage	-	2.3 V	2.3 V	2.3 V	2.3 V
Nominal supply voltage	-	3 V	3 V	3 V	3 V
surface mount	-	YES	YES	NO	YES
technology	-	CMOS	CMOS	CMOS	CMOS
Temperature level	-	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	-	NICKEL PALLADIUM GOLD	NICKEL PALLADIUM GOLD	Matte Tin (Sn)	Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal form	-	NO LEAD	NO LEAD	THROUGH-HOLE	GULL WING
Terminal pitch	-	0.5 mm	0.5 mm	2.54 mm	0.65 mm
Terminal location	-	QUAD	QUAD	DUAL	DUAL
Maximum time at peak reflow temperature	-	30	30	40	30
width	-	4 mm	4 mm	15.24 mm	4.4 mm
uPs/uCs/peripheral integrated circuit type	-	PARALLEL IO PORT, GENERAL PURPOSE	PARALLEL IO PORT, GENERAL PURPOSE	PARALLEL IO PORT, GENERAL PURPOSE	PARALLEL IO PORT, GENERAL PURPOSE

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