HomedatasheetPCA9555PW

PCA9555PW Datasheet

Interface - I/O Expanders
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Description

This PCA9555PW is a 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)].The PCA9555 consists of two 8-bit Configuration (input or output selection), Input Port, Output Port, and Polarity Inversion (active high or active low operation) registers. At power on, the I/Os are configured as inputs. 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 register. The polarity of the Input Port register can be inverted with the Polarity Inversion register. All registers can be read by the system master. PCA9555PW Features • Low Standby-Current Consumption of 1 mA Max • I2C to Parallel Port Expander • Open-Drain Active-Low Interrupt Output • 5-V Tolerant I/O Ports • Compatible With Most Microcontrollers • 400-kHz Fast I2C Bus • Address by Three Hardware Address Pins for Use of up to Eight Devices
Features

Parameters

[{"Name":"Logic Family","Value":"PCA9555 "},{"Name":"Number of I/Os","Value":"16"},{"Name":"Maximum Operating Frequency","Value":"400 kHz "},{"Name":"Operating Supply Voltage","Value":"2.3 V to 5.5 V "},{"Name":"Operating Temperature Range","Value":"- 40 C to + 85 C "},{"Name":"Mounting Style","Value":"SMD/SMT"},{"Name":"Package / Case","Value":"TSSOP-24 "},{"Name":"Packaging","Value":"Tube "}]

Manufacturer information

ROHM
Warm Hint

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