[ASAHI KASEI]
No.
2
Signal Name
TADE
I/O
I
Description
Touch Panel A/D Data Chip Enable Pin
This pin enables the output of Touch Screen A/D converter when it goes to
“H”. ADC starts tracking at the rising edge. A/D Conversion and the output
require 16 TADCK clock cycles. This pin should be set to “L” once per one
A/D conversion.
45 INT
O
O
O
I
Interrupt
This pin is “H” ONLY when the touch screen is pressed. In other cases, the
pin is “L”.
Touch Screen A/D data Output Ready
When Touch Screen A/D converter is ready to output data, TADRDY pin goes
to “H”. This pin goes back to “L” after 12 bit data is output.
Touch Screen A/D Data Output
MSB of A/D data is output at the rising edge of TADRDY is “H”. Other bits of
data are output at the falling edge of TADCK clock
Touch Panel ADC Clock
46 TADRDY
47 TADOUT
48 TADCK
This clock is used for A/D conversion and for the output of data One A/D
conversion needs 16 TADCK clock cycle.
Miscellaneous
17 TST0
-
-
-
-
Test pin 0
Should be Connected to DGND.
Test pin 1
Should be Connected to DGND.
Test pin 2
Should be Connected to DGND.
Test pin 3
18 TST1
19 TST2
20 TST3
Should be Connected to DGND.
Non Connection
Non Connection
Non Connection
Non Connection
1
NC
-
-
-
-
-
-
12 NC
22 NC
25 NC
37 NC
44 NC
Non Connection
Non Connection
<Revision 0.9a>
5
July 00
AKM [ ASAHI KASEI MICROSYSTEMS ]
