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TTP259-ASFN Datasheet(PDF) 55 Page - Tontek Design Technology

Part # TTP259-ASFN
Description  Preliminary
PDF  81 Pages
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Manufacturer  TONTEK [Tontek Design Technology]
Direct Link  http://www.tontek.com.tw
Logo TONTEK - Tontek Design Technology

TTP259-ASFN Datasheet(HTML) 55 Page - Tontek Design Technology

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Preliminary
TTP259
TonTouch
TM
2015/05/25
Page 55 of 81
Ver: 1.1
.. IO port with internal PWM output and external
interrupt trigger input
The standard input/output port has the IO control register for switching
input or output mode and data register stores the output data in output mode.
If IO control data=1 and output data=1, the IO port is programmed as input
with pull-up resistor and also actives the wake-up function. User intends to read
the port data with differed read instruction. The read PxI is reading data comes
from IO pad data. The data register reading result will have the same value
with output register data. If enable internal output, the IO port must set as
output (IO control data=0). An additional feature supports the internal PWM
output and external interrupt trigger input.
IO control data
Output data
Pull-up
R
Wake-up
feature
External
input
0
X
No
No
No
1
0
No
No
Enable
1
1
Enable
Enable
Enable
X: don’t care the value
IO control data
Internal output
IO pad
0
Enable
Output internal data
0
Disable
Output register data
1
X
IO pad input data
X: don’t care the value
Read PxI
Read input data
1
IO pad data



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