TCP223 datasheet(2/11 Pages) TTELEC

2 / 11 page

Preliminary

TTP223

08’/04/07

Page 2 of 11

Ver :1.0

BLOCK DIAGRAM

OPDO

RST

SLRFTB

MOTB

LPMB

AHLB

TOG

control

Key-on & timing

circuit

driver

mode

Output

circuit

Touch detecting

circuit

System oscillator

Timing counter

Sensor oscillator

circuit

detecting circuit

Reference

Sensor &

PAD DESCRIPTION

Pad No. Pad Name I/O Type

Pad Description

CMOS output pin

OPDO

Open drain output pin

VSS

Negative power supply, ground

LPMB

I-PH

Low power mode selection,

1=>Fast mode; 0=>Low power mode

TOG

I-PL

Output type option pin,

1=>Toggle mode; 0=>Direct mode

VDD

Positive power supply

AHLB

I-PL

Output active high or low selection,

1=>Active low; 0=>Active high

RST

I-PL

External power on reset pin

SLRFTB

I-PH

Selecting the sampling length,

1=>about 1.6msec; 0=>about 3.2msec

MOTB

I-PH

Maximum on time 100sec selection,

1=>Disable, 0=>Enable

I/O

Input sensor port

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