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TTP259-ASFN Fiches technique(PDF) 69 Page - Tontek Design Technology

No de pièce TTP259-ASFN
Description  Preliminary
PDF  81 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  TONTEK [Tontek Design Technology]
Site Internet  http://www.tontek.com.tw
Logo TONTEK - Tontek Design Technology

TTP259-ASFN Fiches technique(HTML) 69 Page - Tontek Design Technology

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Preliminary
TTP259
TonTouch
TM
2015/05/25
Page 69 of 81
Ver: 1.1
16 non-contact inputs touch pad detector
The touch pad detector applies the charge sharing conception. The
inputs share the pad with IO ports. Built-in charge sharing control, duty
detector and de-bounce feature can response the input with varied output
refresh rate that dependant on the system request. For power saving
concern, auto power off function and wake up de-bounce capability can
support a lower average operating current.
12-bit Duty counter &
Reload data latch
CH0
CH1
:
:
:
:
CH14
CH15
Touch pad scan & Timing control
Figure: 16 pads Touch pad detector
Edge
Detector
Data Bus
TPCMPF
Clock
Gating
Modulation
clock selector
OSCH/
OSCL
Touch pad selector
TPCTF
CS



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