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LC709004A - I/O-Expander

General Description

Pin Name I/O Description VSS - - power supply pin VDD VDDP1 - + power supply pin

VDD is the power supply pin for blocks other than I/O ports (P00 to P17).

VDDP1 is the power supply pin for port pins P00 to P17.

VDDP1 must not be set hi

Key Features

  • include the capabilities to specify the I/O direction on a bit basis, to specify the output type (CMOS or N-channel open drain), and to specify the I/O voltage level on a port basis according to the power level of the peripheral equipment. These features make allow the LC709004A to be used in a wide variety of.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Ordering number : ENA0165A LC709004A CMOS IC I/O-Expander for Microcontroller http://onsemi.com Overview The LC709004A is a peripheral IC dedicated for expanding the capability of the microcontroller (MCU) I/O ports. It interfaces with the microcontroller through synchronous serial communication. Communication with the extended I/O ports is accomplished through 16-bit parallel I/O. The extended port features include the capabilities to specify the I/O direction on a bit basis, to specify the output type (CMOS or N-channel open drain), and to specify the I/O voltage level on a port basis according to the power level of the peripheral equipment. These features make allow the LC709004A to be used in a wide variety of applications.