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TTP255 Datasheet(PDF) 29 Page - Tontek Design Technology

Part # TTP255
Description  Target Spec.
PDF  49 Pages
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Manufacturer  TONTEK [Tontek Design Technology]
Direct Link  http://www.tontek.com.tw
Logo TONTEK - Tontek Design Technology

TTP255 Datasheet(HTML) 29 Page - Tontek Design Technology

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Preliminary
TTP255
TonTouch
TM
12’/08/21
Page 29 of 49
Ver3.0
. I/O PAD Cell Structure & Function Description
.. Input Port
The input port can mask option with pull high resistor and input
data can read by port reading command. As mask option with pull-up
resister then a wake-up function also offers the system wake up feature
for keys or special external triggers.
Input Data
Pull-high
Read Data
Wake-up
0
R
0
Active
0
No
0
Inhibited
1
R
1
Non-active
1
No
1
Inhibited
Floating
R
1
Non-active
Floating
No
?
Inhibited
R: mask option with pull-up resistor
X: don’t care the value
?: unknown
Figure IO-E:
Input Port



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