TSC2102IDA datasheet(45/58 Pages) TI2

45 / 58 page

TSC2102

SLAS379A− APRIL 2003 − REVISED JUNE 2004

www.ti.com

Programmed

for Host

Controlled

Mode

Detecting Touch

Sample,Conversion &

Averaging for

X−Coordinate

Reading

X−Data

Touch Is Still There

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

X Scan

Mode

Detecting

Touch

SS DEACTIVATED

(As PENIRQ

[D15−D14 = 00])

PINTDAV

(As PENIRQ & DATA_AVA

[D15−D14 = 10/11])

PINTDAV

Touch Is Detected

(As DATA_AVA

[D15−D14 = 01])

PINTDAV

The time needed to convert the Z coordinate under host control (not including the time needed to send the command over

the SPI bus) is given by:

coordinate +

PVS

125 ns

OSC )

AVG

BITS )

8MHz

ƒconv

) n

1 )

) 1

OSC )

OSC

n1 = 6 ; if ƒconv = 8 MHz

7 ; if

ƒconv ≠ 8 MHz

n2 = 2 ; if tPVS = 0 µs

0 ; if tPVS ≠ 0 µs

NOTE: For continuous touch and D15−D14 = 00/10/11, the high duration of the PINTDAV signal is given by tPRE + tSNS with an oscillator clock of

8 MHz.

Programmed

for Host

Controlled

Mode

Detecting Touch

Sample,Conversion &

Averaging for

Z1−Coordinate & Z2−Coordinate

Reading

Z1−Data

Touch Is Still There

Touch Is Detected

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

Z1−Z2 Scan

Mode

Reading

Z2−Data

Detecting

Touch

SS DEACTIVATED

(As PENIRQ

[D15−D14 = 00])

PINTDAV

(As PENIRQ & DATA_AVA

[D15−D14 = 10/11])

PINTDAV

(As DATA_AVA

[D15−D14 = 01])

PINTDAV

TSC2102IDA Datasheet(PDF) 45 Page - Texas Instruments

TSC2102IDA Datasheet(HTML) 45 Page - Texas Instruments

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