sx8675iwltrt Semtech Corporation, sx8675iwltrt Datasheet - Page 33
sx8675iwltrt
Manufacturer Part Number
sx8675iwltrt
Description
Haptics Enabled Multitouch 4/5-wire Resistive Touchscreen Controller With Proximity Sensing
Manufacturer
Semtech Corporation
Datasheet
1.SX8675IWLTRT.pdf
(64 pages)
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ADVANCED COMMUNICATIONS & SENSING
5.3.5
PROXDIFF update consists in the complementary operation i.e. subtracting PROXAVG to PROXUSEFUL to
ignore slow capacitances variations (C
5.3.6
PROXSTAT update consists in taking PROXDIFF information (C
threshold PROXTHRESH and finally updating PROXSTAT accordingly. When PROXSTAT=1, PROXAVG is
frozen to prevent the user proximity signal averaging and hence absorbed into C
Rev 1 – 25
PROXDIFF Update
PROXSTAT Update
th
July 2011
Env
Figure 41 – PROXSTAT Update
) and extract only the user related variations i.e. C
Figure 40 – ProxDiff Update
Resistive Touchscreen Controller with Proximity Sensing
33
SX8674/SX8675/SX8676
User
), comparing it with a user programmable
Haptics Enabled Multitouch 4/5-Wire
Env
.
User
www.semtech.com
.
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