PCA9555PWR

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Series Information for PCA9555PWR - Texas Instruments

Description

I/O EXPANDER 16 BIT 400KHZ TSSOP-24
This 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.

Specifications

Chip Configuration:
16bit
Bus Frequency:
400kHz
IC Interface Type:
I2C SMBus
Supply Voltage Min:
2.3V
Supply Voltage Max:
5.5V
Interface Case Style:
TSSOP
No. of Pins:
24Pins
Product Range:
-

Alternate Descriptions

Avnet America

I2C and SMBus I/O Expander 24-Pin TSSOP T/R

Avnet Europe

I2C and SMBus I/O Expander 24-Pin TSSOP T/R

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