BU1850MUV datasheet(3/18 Pages) ROHM

部件名	BU1850MUV

功能描述	GPIO Expander IC

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制造商	ROHM [Rohm]

网页	http://www.rohm.com

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Technical Note

3/17

BU1850MUV

www.rohm.com

2009.09 - Rev.A

●Pin Assignment

5 SDA

6 VDD

7 VDDIO

8 VSS

13 GPIO4

14 GPIO5

15 GPIO6

16 GPIO7

Fig.2

Pin Diagram (Top View)

●Block Diagram

Input

Filter

I

2C Bus

Control

Shift

Register

INT_MASK

Interrupt

Logic

8bit

Functional Block Diagram

XINT

SCL

SDA

Write Pulse

Read Pulse

GPIO

[7:0]

VDDIO

IN/OUT

Control

XRST

GPIO[7:0]

VDD

ADR

Interrupt

Filter

Power

On

Reset

VSS

Reset

Gen

Fig.3

Functional Block Diagram

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