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Microchip maXTouch 640-node Touchscreen Controller

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发表于 2018-8-31 09:27:33 | 显示全部楼层 |阅读模式
maXTouchR Adaptive Sensing Touchscreen5 P% H1 L( X0 N7 J) ?8 Y
Technology
8 v5 g0 C; l* U8 r Up to 32 X (transmit) lines and 20 Y (receive) lines
. M( l$ R* Z  Y- e, D A maximum of 640 nodes can be allocated to the
; z* s  ^5 I, }( e" [touchscreen
# O3 `3 k% o4 x+ l Touchscreen size 8.17 inches (16:10 aspect ratio),
/ I; `2 e! @$ R! i' y& u) D# Yassuming a sensor electrode pitch of 5.5 mm. Other
7 k9 y5 O: a' P0 n" W: @7 v' Jsizes may be possible with different electrode pitches% c- e- i/ R% Z4 U# A8 F$ w6 M, m7 p  p
and appropriate sensor material% T& \7 u  y5 i6 }
 Multiple touch support with up to 16 concurrent* r$ \6 r7 T# R2 |' q3 N3 x: t8 }
touches tracked in real time( n! T. w5 a& j) _$ M
Automotive Applications
' b7 Y- g7 }5 N! H AEC-Q100 Qualified. Q$ T2 m  o7 O. _+ w0 k
 Developed following Automotive SPICER Level 3/ d% T8 H. |" E% e4 g+ ]3 a
certified processes
, s: S0 j8 W3 n CISPR-25 compliant (for both mutual and self& u9 {" [8 O! m# `* F) ?7 b; J
capacitance measurements)6 s+ O% Q) I0 ^
Touch Sensor Technology% s3 t) V# r$ u8 R$ l! h8 f
 Discrete/out-cell support including glass and PET filmbased2 f/ |# k8 w& j
sensors+ u( r" R. P* e# D) q8 D, h) t. \
 On-cell/touch-on display support including TFT, IPS. ~: H6 S) ]) d6 T
and OLED
- G, `' Z$ e1 n, A5 D; z Synchronization with display refresh timing capability* t2 Q( J2 G0 P2 N  _  p4 l* z
 Support for standard (for example, Diamond) and1 @( i' r0 z3 n" o0 u; x4 h8 P, c
proprietary sensor patterns (review of designs by
( l3 a  q4 F: ?; ?" AMicrochip recommended)0 @# D# P/ G2 Y1 M9 \  K" o
Front Panel Material# m+ T/ C+ y7 _" g0 `* h# W- {8 t
 Works with PET or glass, including curved profiles
) m; P# @: J0 ]% t(configuration and stack-up to be approved by( L) d. J5 N2 R) `- X
Microchip)
; S0 k4 b: B$ e  e# q% f Glass 0.4 mm to 8 mm (dependent on screen size,% C) I" [/ Q+ r: J9 L( |1 G& e% \
touch size, configuration and stack-up)
* p5 I  o1 L. u; k7 i# M. b: ` Plastic 0.2mm to 4 mm (dependent on screen size,' Y  F* m3 v0 z' J
touch size, configuration and stack-up)
& I: K- Q) L" N" w+ cTouch Performance) q  s/ t. ^2 p
 Moisture/Water Compensation
- u  T$ H  `8 t7 b- {- No false touch with condensation or water drop up  E6 f" b! Q' w) A( s
to 22 mm diameter) w) Q/ ?  s! F5 Z: {6 }
- One-finger tracking with condensation or water
9 X+ }) W% k2 ~1 t8 t- Gdrop up to 22 mm diameter
' o  O& S) D6 V2 h' b Hover Support
1 \- @8 B/ G+ Y$ b; U9 l! {0 }' s- Supports one-finger hover up to 20 mm detection0 Y' o6 Y3 q/ o: u6 }  U. C* Z$ k( j
and 15 mm tracking range0 X  p  ^  e+ N) }* ]8 O
- Supports multiple finger hover detection
2 v$ v8 I$ o; P9 S: |! r# t Glove Support' R- N) H5 L% z, G
- Multiple-finger glove touches up to 1.5 mm* p% H. i- M, q
thickness (subject to stack-up design)' F, j: G( ?" U- y6 t% B. F& M
- Single-finger glove touch up to 5 mm thickness+ u# n1 d- f5 G! X/ x, ^$ Y* G8 Y" `
(subject to stack-up design)$ e/ }/ J/ h: S; X" P3 A# y- H! A$ F* ?
 Mutual capacitance and self capacitance
& w! M0 p  h# C5 B6 n' w4 W) x2 X. ameasurements supported for robust touch detection; h( b, r0 v! B* p
 P2P mutual capacitance measurements supported for
5 q: @( P3 f: O6 J9 C# textra sensitive touch sensing; j0 l) C" A3 O. @8 p7 E1 E
 Noise suppression technology to combat ambient and# t# n, ]3 T1 \) d
power-line noise
( l7 H' S4 p/ L- Up to 240 Vpp between 1 Hz and 1 kHz7 V5 @! x2 _. y- p) Z8 R
sinusoidal waveform2 }! W9 `; E& J1 K7 a
- Up to 20 Vpp between 1 kHz and 1 MHz- f9 ]! F  h1 |+ K2 w
sinusoidal waveform) a4 A+ H' D. F
 Burst Frequency
; e& f! z/ l. `( t- Flexible and dynamic Tx burst frequency selection
" i7 r4 T3 D+ D1 j; [to reduce EMC disturbance( x3 e2 W4 Y) }3 ^: e
- Controlled Tx burst frequency drift over process
4 i0 U& N: f: Z6 ?and temperature range5 N, J' s2 q) k; \9 E1 r
- Firmware-controlled Tx waveform shaping to
) @9 T% G$ M1 E5 `: i5 b) u. Yreduce emissions+ Q. F  X% Q# J- @) `3 ^) G) ^
 Scan Speed
, r1 {: q. f, R/ v2 D' J' J- Up to 250 Hz one finger reporting rate (subject to- f% q2 J' U3 e$ l- o2 b. x
configuration)5 n# ?8 @/ G- n! ~6 Z( s- r1 d- W
- Typical report rate for 10 touches 刣60 Hz (subject7 F; m9 U7 k: y* n; t6 z7 u8 x
to configuration)
* W0 v3 I. [3 S$ H- A+ c3 b4 |: T- Initial touch latency <25 ms for first touch from idle
7 C& H$ U9 ~0 Y7 ^1 l; K(subject to configuration)( u; C  z) x4 r: F# [
- Configurable to allow for power and speed" J  s: w" a8 @" p4 d
optimization$ @8 h  _! r: l. z+ ]
 Touch panel failure detection' I, G! h6 S3 p" b( ^$ E7 A
- Automatic touch sensor diagnostics during run7 m' s3 \0 x- `7 {1 u
time to support the implementation of safety9 P  q2 D% \/ \( s
critical features
) Q0 _$ G/ o9 c- N/ ?3 v- Diagnostics reported using dedicated output pin
! W" r6 g% B: u$ G/ P5 ^/ C- D5 \or by standard Object Protocol messages
+ r& q0 b: U* i% J/ y) p1 y" U- Configurable test limits
/ |# h  G4 D; q9 d4 I- z. kOn-chip Gestures
7 e: q4 f2 j% `! X" o" _# A3 u0 e Reports one-touch and two-touch gestures
; O2 V2 V. i( \3 N) N9 m9 s( M3 _$ l2 D

, u$ x# _3 r' r. a1 D/ ~7 M. Q
发表于 2018-10-16 16:45:08 | 显示全部楼层
谢谢楼主分享!!!
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发表于 2018-10-27 15:17:38 | 显示全部楼层
datasheet 呢?
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