Datasheet4U Logo Datasheet4U.com

NCA9555B - 16-bit I2C-bus I/O port

Datasheet Summary

Description

7.1.

FUNCTIONAL BLOCK DIAGRAM 10 7.2.

7.2.1.

Features

  • I2C to Parallel Port Expander.
  • Operating power supply voltage range of 1.65 V to 5.5 V.
  • Low standby current.
  • Open-drain active-low interrupt output.
  • 5.5 V tolerant, 16 I/O ports which default to input mode.
  • Compatible with most microcontrollers.
  • Up to 400 kHz clock frequency.
  • Noise filter on SCL/SDA inputs.
  • Polarity Inversion register.
  • Internal power-on reset.
  • No glitch on power-up.
  • Address by three hardware address pins for use of up.

📥 Download Datasheet

Datasheet preview – NCA9555B

Datasheet Details

Part number NCA9555B
Manufacturer NOVOSENSE
File Size 1.22 MB
Description 16-bit I2C-bus I/O port
Datasheet download datasheet NCA9555B Datasheet
Additional preview pages of the NCA9555B datasheet.

📁 Similar Datasheet

  • NCA9555 - Low-voltage 16-bit I2C and SMBus I/O expander (nexperia)
  • NCA9555-Q100 - Low-voltage 16-bit I2C and SMBus I/O expander (nexperia)
  • NCA9535 - Low-voltage 16-bit I2C and SMBus low-power I/O expander (nexperia)
  • NCA9535-Q100 - Low-voltage 16-bit I2C and SMBus low-power I/O expander (nexperia)
  • NCA9539 - Low-voltage 16-bit I2C and SMBus low-power I/O expander (nexperia)
  • NCA9539-Q100 - Low-voltage 16-bit I2C and SMBus low-power I/O expander (nexperia)
  • NCA9547A - 8-channel I2C-bus multiplexer (nexperia)
  • NCA9547A-Q100 - 8-channel I2C-bus multiplexer (nexperia)
  • NCA9548A - 8-channel I2C-bus switch (nexperia)
  • NCA9548A-Q100 - 8-channel I2C-bus switch (nexperia)
Other Datasheets by NOVOSENSE

Full PDF Text Transcription

Click to expand full text
NCA9555B 16-bit I2C-bus I/O port with interrupt Datasheet (EN) 1.1 Product Overview The NCA9555B is a 24-pin device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for the two-line bidirectional I2C bus applications. The device can operate with a power supply voltage (VDD) range from 1.65 V to 5.5 V. It provides a simple solution when additional I/Os are needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc. The NCA9555B 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.
Published: |