BU1850MUV Datasheet, PDF (1/18 Pages) Rohm – GPIO Expander IC

GPIO ICs Series
GPIO Expander IC
BU1850MUV
No.09098EAT02
●Description
GPIO expander is useful especially for the application that is in short of IO ports.
It can
1. Control GPIO output states by I²C write protocol.
2. Know GPIO input states by I²C 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)
Parameter
Supply Voltage^*1
Input voltage
Storage temperature range
Symbol
VDD
VDDIO
VI
VIT
Tstg
Rating
-0.3 ~ +4.5
-0.3 ~ +4.5
-0.3 ~ VDD +0.3^*1
-0.3 ~ 4.5
-55 ~ +125
Unit
comment
V
VDD≦VDDIO
V
V
XRST, ADR
V
XINT, SCL, SDA, GPIO[7:0]
℃
Package power
PD
272^*2
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.
*2 Package dissipation will be reduced each 2.72mW/ ^oC when the ambient temperature increases beyond 25 ^oC.
●Operating conditions
Parameter
Symbol Min
Supply voltage range (VDD)
V_VDD
1.65
Supply voltage range (VDDIO)
Input voltage range
Operating temperature range
I²C operating frequency
V_VDDIO
V_IN
V_INT
Topr
F_I2C
1.65
-0.2
-0.2
-30
-
Typ
Max
Unit
1.80
3.6
V
1.80
3.6
V
-
V_VDD+0.2
V
-
3.6
V
-
+85
℃
-
400
kHz
Conditions
Core, XINT, XRST,
SCL, SDA, ADR,
Power On Reset
GPIO[7:0]
XRST, ADR
XINT, SCL, SDA,
GPIO[7:0]
Slave
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2009.09 - Rev.A