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BU1850MUV Datasheet(PDF) 1 Page - Rohm |
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BU1850MUV Datasheet(HTML) 1 Page - Rohm |
1 / 18 page 1/17 www.rohm.com 2009.09 - Rev.A © 2009 ROHM Co., Ltd. All rights reserved. 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 1. Control GPIO output states by I 2C write protocol. 2. Know GPIO input states by I 2C 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 150kΩPull-down resistance. 2) NMOS Open-drain output interrupt controller with up to 1us pulse noise filter and bit mask function for individual GPIO port. 3) 3volt tolerant Input 4) Built-in Power On Reset 5) 3mmx3mm small package ●Absolute maximum ratings (Ta=25 oC) This IC is not designed to be X-ray proof. *1 It is prohibited to exceed the absolute maximum ratings even including +0.3 V. *2 Package dissipation will be reduced each 2.72mW/ oC when the ambient temperature increases beyond 25 oC. ●Operating conditions Parameter Symbol Min Typ Max Unit Conditions Supply voltage range (VDD) VVDD 1.65 1.80 3.6 V Core, XINT, XRST, SCL, SDA, ADR, Power On Reset Supply voltage range (VDDIO) VVDDIO 1.65 1.80 3.6 V GPIO[7:0] Input voltage range VIN -0.2 - VVDD+0.2 V XRST, ADR VINT -0.2 - 3.6 V XINT, SCL, SDA, GPIO[7:0] Operating temperature range Topr -30 - +85 ℃ I 2C operating frequency FI2C - - 400 kHz Slave Parameter Symbol Rating Unit comment Supply Voltage *1 VDD -0.3 ~ +4.5 V VDD≦VDDIO VDDIO -0.3 ~ +4.5 V Input voltage VI -0.3 ~ VDD +0.3 *1 V XRST, ADR VIT -0.3 ~ 4.5 V XINT, SCL, SDA, GPIO[7:0] Storage temperature range Tstg -55 ~ +125 ℃ Package power PD 272 *2 mW No.09098EAT02 |
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