GPIO ICs Series GPIO Expander IC No.09098EAT02 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 150kPull-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 o (Ta=25 C) Parameter Symbol Rating Unit comment VDD -0.3 ~ +4.5 V VDDVDDIO *1 Supply Voltage VDDIO -0.3 ~ +4.5 V *1 VI -0.3 ~ VDD +0.3 V XRST, ADR Input voltage VIT -0.3 ~ 4.5 V XINT, SCL, SDA, GPIO 7:0 Storage temperature range Tstg -55 ~ +125 *2 Package power PD 272 mW 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. o o *2 Package dissipation will be reduced each 2.72mW/ C when the ambient temperature increases beyond 25 C. Operating conditions Parameter Symbol Min Typ Max Unit Conditions Core, XINT, XRST, Supply voltage range (VDD) V 1.65 1.80 3.6 V SCL, SDA, ADR, VDD Power On Reset Supply voltage range (VDDIO) V 1.65 1.80 3.6 V GPIO 7:0 VDDIO V -0.2 - V+0.2V XRST, ADR IN VDD Input voltage range XINT, SCL, SDA, V -0.2 - 3.6 V INT GPIO 7:0 Operating temperature range Topr -30 - +85 2 I C operating frequency F - - 400 kHz Slave I2C www.rohm.com 2009.09 - Rev.A 1/17 2009 ROHM Co., Ltd. All rights reserved. Technical Note BU1850MUV Package Specification B U 1 8 5 0 Lot No. (UNIT: mm) Fig.1 Package Specification (VQFN016V3030) www.rohm.com 2009.09 - Rev.A 2/17 2009 ROHM Co., Ltd. All rights reserved.