Datasheet
TSC2101
SLAS392D− JUNE 2003 − REVISED MAY 2005
www.ti.com
77
n
2
= 2 ; if t
PVS
= 0 µs
0 ; if t
PVS
≠
0 µs
n
3
= 0 ; if t
SNS
= 32 µs
0 ; if t
SNS
≠
32 µs
Programmed
for Self
Controlled
X Scan
Mode
Detecting Touch
Sample,Conversion &
Averaging for
X−Coordinate
Reading
X−Data Register
Detecting
Touch
Sample,Conversion &
Averaging for
X−Coordinate
Touch is detected
/SS DEACTIVATED
Touch is detected
/PINTDAV
(As /PENIRQ
[D15−D14 = 00])
/PINTDAV
(As DATA_AVA
[D15−D14 = 01])
/PINTDAV
(As /PENIRQ & DATA_AVA
[D15−D14 = 10/11])
Touch is detected
The time needed to convert the Z coordinate under self-controlled mode (not including the time needed to send the
command over the SPI bus) is given by:
t
coordinate
+
ȧ
ȱ
Ȳ
ǒ
t
PRE
) t
SNS
) t
PVS
Ǔ
125 ns
ȧ
ȳ
ȴ
t
OSC
) 2 NJN
AVG
ƪ
ǒ
N
BITS
) 1
Ǔ
8MHz
ƒ
conv
) n
1
) 12
ƫ
) 1Nj
t
OSC
) 22 t
OSC
) n
2
t
OSC
) n
3
t
OSC
) t
PGDEL
n
1
= 6 ; if ƒ
conv
= 8 MHz
7 ; if ƒ
conv
≠ 8 MHz
n
2
= 2 ; if t
PVS
= 0 µs
0 ; if t
PVS
≠
0 µs
n
3
= 0 ; if t
SNS
= 32 µs
1 ; if t
SNS
≠
32 µs
Programmed
for Self
Controlled
Z Scan
Mode
Detecting Touch
Sample,Conversion &
Averaging for
Z1−Coordinate & Z2−Coordinate
Reading
Z1−Data
Register
Detecting
Touch
Sample,Conversion &
Averaging for
Z1−Coordinate & Z2−Coordinate
Touch is detected
/SS DEACTIVATED
Touch is detected
/PINTDAV
(As /PENIRQ
[D15−D14 = 00])
/PINTDAV
(As DATA_AVA
[D15−D14 = 01])
/PINTDAV
(As /PENIRQ & DATA_AVA
[D15−D14 = 10/11])
Touch is detected
Reading
Z2−Data
Register