GPIO Expander IC - Rohm
gpio ICs Series gpio Expander IC. BU1850MUV. Description gpio Expander is useful especially for the application that is in short of IO ports. It can 2. 1. Control gpio output states by I C write protocol. 2. 2. Know gpio input states by I C read protocol. Furthermore,it has the interrupt function that can release CPU from polling the registers in the gpio Expander . gpio Expander are also equipped with Built-in power on reset, 3V tolerant input,and NMOS open-drain output. Features 1) An 8-Port General purpose input/output interface 150k Pull-down resistance.
Technical Note www.rohm.com 3/17 BU1850MUV 2009.09 - Rev.A © 2009 ROHM Co., Ltd. All rights reserved. Pin Assignment 1 XINT 2 XRST 3 SCL 4 ADR
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