BU21010MUV

Technical Note

4/14

www.rohm.com

2009.04 - Rev.B

© 2009 ROHM Co., Ltd. All rights reserved.

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Pin Description

Pin

No.

Name

I/O

Function

Note

Supply

Reference

Reset

Level

I/O Pad

1

SDA

In/Out

Communication data sending and

receiving

-

DVDD

"Hi-Z"

⑤

2

SCL

In

Communication synchronous clock

input

-

DVDD

-

②

3

INT

Out Output of interrupt

"L" : Active mode

"H" : Idle mode

DVDD

"L"

③

4

SDN

In

Shutdown input

"L" : Halt condition

"H" : state of operation

DVDD

-

①

5

SREF

AIn

Standard capacitor input

-

AVDD

"Hi-Z"

④

6

SIN0

AIn

sensor input0

-

AVDD

"Hi-Z"

④

7

GND

Ground Analog and digital ground

-

-

-

-

8

SIN1/LED0 AIn/Out sensor input 1 / LED control output 0

sensor input , LED drive

select

AVDD

"Hi-Z"

④

9

SIN2

AIn

sensor input2

-

AVDD

"Hi-Z"

④

10 SIN3/LED1 AIn/Out sensor input 3 / LED control output 1

sensor input , LED drive

select

AVDD

"Hi-Z"

④

11

SIN4

AIn

sensor input4

-

AVDD

"Hi-Z"

④

12 SIN5/LED2 AIn/Out sensor input 5 / LED control output 2

sensor input , LED drive

select

AVDD

"Hi-Z"

④

13

SIN6

AIn

sensor input6

-

AVDD

"Hi-Z"

④

14 SIN7/LED3 AIn/Out sensor input 7 / LED control output 3

sensor input , LED drive

select

AVDD

"Hi-Z"

④

15

AVDD

Power Digital part Power supply

-

AVDD

-

-

16

DVDD

Power Analog part Power supply

-

DVDD

-

-

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I/O Circuit

①

CMOS INPUT

②

CMOS Schmitt INPUT

③

CMOS OUTPUT

④

CMOS 3stute OUTPUT with

ANALOG-SW

⑤

CMOS Schmitt INOUT

PAD

CIN

PAD

CIN

PAD

I

PAD

I

AIN

OE

ASW

PAD

I

CIN

OEN