Datasheet

TSC2101
SLAS392D JUNE 2003 REVISED MAY 2005
www.ti.com
79
Programmed
for Host
Controlled
Mode
Detecting Touch
Sample,Conversion &
Averaging for
Z1Coordinate & Z2Coordinate
Reading
Z1Data
Register
Touch is still there
Touch is detected
/PINTDAV
(As /PENIRQ
[D15D14 = 00])
/PINTDAV
(As /DATA_AVA
[D15D14 = 01])
/PINTDAV
(As /PENIRQ & DATA_AVA
[D15D14 = 10/11])
Waiting for Host to write
into REG00 of PAGE01
Waiting for Host to write into
REG00 of PAGE01
REG00 of
PAGE01
is updated
for
Z1Z2 Scan
Mode
Reading
Z2Data
Register
/SS DEACTIVATED
Detecting
Touch
Programmed
for Host
Controlled
Mode
Detecting Touch
Sample,Conversion &
Averaging for
YCoordinate
Reading
XData
Register
Reading
YData
Register
Detecting
Touch
Sample,Conversion &
Averaging for
XCoordinate
Detecting
Touch
Sample,Conversion &
Averaging for
YCoordinate
Detecting
Touch
Touch Is Detected
Touch Is Detected
REG00 of
PAGE01
Is Updated
for
XY Scan
Mode
Waiting for Host to
Write into REG00 of
PAGE01
SS DEACTIVATED
(As PENIRQ
[D15D14 = 00])
PINTDAV
(As PENIRQ & DATA_AVA
[D15D14 = 10/11])
PINTDAV
Touch Is Detected
(As DATA_AVA
[D15D14 = 01])
PINTDAV
Non-Touch Screen Measurement Operation
The time needed to make temperature, auxiliary, or battery measurements is given by:
t +
NJN
AVG
ƪ
ǒ
N
BITS
) 1
Ǔ
8MHz
ƒ
conv
) n
1
) n
2
ƫ
) 1Nj t
OSC
) 15 t
OSC
) n
3
t
OSC
where:
n
1
= 6 ; if ƒ
conv
= 8 MHz
7 ; if ƒ
conv
8 MHz
n
2
= 24 ; if measurement is for TEMP1 case
12 ; if measurement is for other than TEMP1 case
400 ns; if measurement is for the external/internal resistance using AUX1/AUX2
n
3
= 0 ; if external reference mode is selected
3 ; if t
REF
= 0 µs or reference is programmed for power up all the time.
1 + t
REF
/125 ns; if t
REF
0 µs and reference needs to power down between conversions.
t
REF
is the reference power up delay time.