HM223B datasheet(2/8 Pages) HMSEMI

Part #	HM223B

Description	1 key Touch Pad Detector IC

PDF	8 Pages

Scroll/Zoom	100%

Manufacturer	HMSEMI [Shenzhen Huazhimei Semiconductor Co., Ltd]

Direct Link	http://www.hmsemi.com/

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2 / 8 page

HM223B

2015/07/24

Page 2 of 8

Version：1.0

Block diagram

control circuit

function option

Timing counter &

TOG

control

Key-on & timing

circuit

System oscillator

Regulator

circuit

AHLB

circuit

Sensor oscillator

circuit

Touch detecting

detecting circuit

Reference

Sensor &

circuit

driver

mode

Output

Pin Description

Pin NO Pin Name

Type

Pin Description

CMOS output pin

VSS

Negative power supply, ground

I/O

Input sensor port

AHLB

I-PL

Output Q active high or low selection,

0(Default)=>Active high; 1=>Active low

VDD

Positive power supply

TOG

I-PL

Output type option pin,

0(Default)=>Direct output; 1=>Toggle output

Pin Type

CMOS input only

I-PH

CMOS input and pull-high resister

CMOS push-pull output

I-PL

CMOS input and pull-low resister

I／O

CMOS I／O

Open drain output, have no Diode

protective circuit

Power／Ground

HM223B Datasheet(PDF) 2 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

HM223B Datasheet(HTML) 2 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

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