TSC2102IDA datasheet(47/58 Pages) TI2

47 / 58 page

TSC2102

SLAS379A− APRIL 2003 − REVISED JUNE 2004

www.ti.com

Programmed for

Host Controlled

Mode With Invalid

A/D Function

Selected

Detecting Touch

Sample,Conversion &

Averaging for

AUX input

Waiting for Host to

Write into REG−00

of PAGE−01

REG−00 of

PAGE−01

Is Updated

for Continous

AUX SCAN

Mode

Reading

AUX−Data

Sample,Conversion &

Averaging for

AUX input

Sample,Conversion &

Averaging for

AUX input

Reading

AUX−Data

(As DATA_AVA

[D15−D14 = 01])

PINTDAV

SS DEACTIVATED

Wait for Reference Power-Up Delay in Case

of Internal Ref Mode if Applicable

Port Scan Operation

The time needed to complete one set of port scan conversions is given by:

+ 3

AVG

BITS )

8MHz

ƒconv

) n

1 )

) 1

OSC )

OSC

where:

n1 = 6 ; if ƒconv = 8 MHz

7 ; if

ƒconv ≠ 8 MHz

n2 = 0 ; if external reference mode is selected

3 ; if tREF = 0 µs or reference is programmed for power up all the times.

1 + tREF /125 ns; if tREF ≠ 0 µs and reference needs to power down between conversions.

tREF is the reference power up delay time.

Programmed for

Host Controlled

Mode With Invalid

A/D Function

Selected

Detecting Touch

Sample,Conversion &

Averaging for

BAT1 & BAT2 & AUX input

Reading

BAT1−

Data

Waiting for Host to

Write into REG−00

of PAGE−01

Waiting for Host to Write into REG−00

of PAGE−01

REG−00 of

PAGE−01

is updated

for

PORT SCAN

Mode

Reading

BAT2−

Data

Reading

AUX−Data

(As DATA_AVA

[D15−D14 = 01])

PINTDAV

SS DEACTIVATED

Wait for Reference Power-Up Delay in Case

of Internal Ref Mode if Applicable

TSC2102IDA Datasheet(PDF) 47 Page - Texas Instruments

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