AK4161 datasheet(4/12 Pages) AKM | 6-channel Capacitive Touch Sensor IC

Part No.	AK4161

Description	6-channel Capacitive Touch Sensor IC

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Manufacturer	AKM [Asahi Kasei Microsystems]

Direct Link	http://www.akm.com

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[AK4161]

MS1450-E-02-PB

2014/05

- 4 -

PIN/FUNCTION

Pin No.

Pin Name

Type

(Note 1)

I/O

(Note 2)

Function

Reset State

RSTN = “L”

1

RSTN

D

I

Reset Pin (Active Low)

-

2

SCL

D

I

2C Serial Clock Input

-

3

SDA

D

I/O

I

2C Serial Data Input/ Output

Hi-z

4

AD0

D

I

2C Slave Address Bit 0

-

6

VSS

GND

-

Ground

-

8

CS0 / GPIO0

A/D

I/O

Cap Sense / GPIO Pin0

Hi-z

9

CS1 / GPIO1

A/D

I/O

Cap Sense / GPIO Pin1

Hi-z

10

CS2 / GPIO2

A/D

I/O

Cap Sense / GPIO Pin2

Hi-z

11

CS3 / GPIO3

A/D

I/O

Cap Sense / GPIO Pin3

Hi-z

12

CS4 / GPIO4

A/D

I/O

Cap Sense / GPIO Pin4 with IRQN

Hi-z

13

CS5 / GPIO5

A/D

I/O

Cap Sense / GPIO Pin5 with IRQN

Hi-z

15

VDD

PWR

-

Power Supply : 1.6V ~ 3.6V

-

5

7

14

16

NC

-

No Connection

No internal bonding. This pin must be

connected to VSS.

-

Note 1. A (Analog terminal), D (Digital terminal), GND (Ground), PWR (Power)

Note 2. I (Input terminal), O (Output terminal)

Note 3. All digital input pins (SCL, SDA, AD0, RSTN) must not be allowed to float.

■ Handling of Unused Pins

The unused I/O pins must be connected appropriately.

Classification

Pin Name

Setting

Analog/Digital

CS0 / GPIO0 ~ CS5/ GPIO5

Pin Connection: Connect to VSS.

Register Setting: FUNC (Addr: 0x1F-0x20) = “00”

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