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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 Touchscreen4 p3 t* X& k3 Y' e4 `) ]
Technology( H2 ]+ p# G+ x, \# U* w* T) U" o8 D
 Up to 32 X (transmit) lines and 20 Y (receive) lines5 ?; K# ~2 p( j( T
 A maximum of 640 nodes can be allocated to the- F* D8 [: D; ~0 m" n) S
touchscreen
% V% C* O! O! F7 L2 j Touchscreen size 8.17 inches (16:10 aspect ratio),
* l+ j: k) l# Gassuming a sensor electrode pitch of 5.5 mm. Other
+ b8 w; w( A& J& ~7 tsizes may be possible with different electrode pitches! e$ Z) x) s5 J! e. b
and appropriate sensor material( y4 s, u& J& N4 E; [8 F4 ?6 W
 Multiple touch support with up to 16 concurrent
- Z* ~1 a/ o2 F) y/ q8 Ftouches tracked in real time" l0 ~" f3 A; ]! L% U! L
Automotive Applications7 d8 h4 ?# c% C( K" {
 AEC-Q100 Qualified# b1 Y& A& ]2 h$ Z/ e) P
 Developed following Automotive SPICER Level 3
: N' `) i( O1 scertified processes: I; t7 _" U) A! b) w; G
 CISPR-25 compliant (for both mutual and self% b& U8 Y' ~% s9 _9 q
capacitance measurements)
$ m1 g& r/ |! f' S2 [1 LTouch Sensor Technology
/ V! C0 N+ ~- z5 h, M" E9 h% V  i Discrete/out-cell support including glass and PET filmbased9 O2 @; T2 D) }$ }0 x; Z* C+ E4 A
sensors+ d& R# m4 U( e$ \7 X  D
 On-cell/touch-on display support including TFT, IPS
/ b" e8 P+ F; E2 L  p- b6 s1 J& M* d5 Gand OLED  r* t" q9 W( H, e
 Synchronization with display refresh timing capability& r- V/ O& d  I- j
 Support for standard (for example, Diamond) and, {/ Q0 M2 y/ P- j) y
proprietary sensor patterns (review of designs by
6 b' A$ s1 T$ Y1 R; @Microchip recommended)
+ u0 c0 B& ~1 M. }: b2 PFront Panel Material  S0 a: s. j4 L& l4 d* a4 N
 Works with PET or glass, including curved profiles! Y% F/ D8 O* W' E
(configuration and stack-up to be approved by
8 \; Z6 `  t) [: c0 [Microchip)
' B8 J, W. B3 F: z! }+ R- A) h6 | Glass 0.4 mm to 8 mm (dependent on screen size,
' y9 A/ d( g/ \9 Mtouch size, configuration and stack-up)3 T% B0 f& W; v. U0 f; S# t
 Plastic 0.2mm to 4 mm (dependent on screen size,% D9 c4 _1 D! ~6 q0 J; ?* p9 [) C8 M
touch size, configuration and stack-up)
* c: G' H3 Z' z+ q3 L1 Z2 S# vTouch Performance) P4 W% Z  y2 \/ P, ?5 ^7 h
 Moisture/Water Compensation6 t+ I8 d  d2 T, l+ k
- No false touch with condensation or water drop up
' f7 @* o( }7 G8 \# Ato 22 mm diameter
8 u# m3 R4 y& ]- p, U- u- One-finger tracking with condensation or water3 |" w  a7 S: }6 F* ~- Y6 d1 @# t
drop up to 22 mm diameter
0 V0 B0 Q$ I& Z/ H5 B Hover Support
) B6 _; r3 k* U: A( |- Supports one-finger hover up to 20 mm detection( o; B& M3 b' q  t" t6 g6 g
and 15 mm tracking range7 h/ f% f. L4 z3 p+ A. e# D8 \
- Supports multiple finger hover detection
2 V6 @* t! ~: |: z9 f( }/ X Glove Support8 @7 A0 `2 y% l4 Z/ O7 D2 l
- Multiple-finger glove touches up to 1.5 mm
9 V: l$ v) B+ I, f  Sthickness (subject to stack-up design)* c6 g+ }; G- f) B* X
- Single-finger glove touch up to 5 mm thickness
3 c; k3 |) D, P) a* ~(subject to stack-up design): N( [7 F9 P/ {5 _* f# g9 K) @
 Mutual capacitance and self capacitance
/ \8 X' a/ A5 P. k0 \/ S  ~& `measurements supported for robust touch detection
1 v% P4 B9 t4 p- M6 q6 [6 u P2P mutual capacitance measurements supported for
+ w- \' j& U" P! m, C4 vextra sensitive touch sensing$ h* y8 Y, K& a* _# L
 Noise suppression technology to combat ambient and
, \' r5 A$ ]/ ]$ j4 K2 f% fpower-line noise  A+ F5 Z3 C7 O/ U2 L1 k
- Up to 240 Vpp between 1 Hz and 1 kHz1 n; M  t) X3 `' }7 F
sinusoidal waveform+ W  C& I6 M  I& f# f" {
- Up to 20 Vpp between 1 kHz and 1 MHz
! e  f3 H# G0 A" [. S9 T8 Qsinusoidal waveform
9 g% L. H: A% E; \6 |, C$ S Burst Frequency
( h5 L0 ?1 {; H. a) a. P- Flexible and dynamic Tx burst frequency selection
5 e+ z) K/ k+ c# ?6 Y! b4 s, Cto reduce EMC disturbance
  g3 K0 k# d) C5 A0 d0 ^' F- Controlled Tx burst frequency drift over process% C+ M5 f7 o! Q6 \7 w) h
and temperature range
- S  L- m. o; X. D- Firmware-controlled Tx waveform shaping to' m; j0 ~$ T  H  |+ \  {
reduce emissions. T, T# [/ q2 d  y% f6 f1 B
 Scan Speed
& n8 {" `" G+ |  Q+ h8 v3 O- Up to 250 Hz one finger reporting rate (subject to, Y7 p# I5 m6 C4 Q+ G. L
configuration)% k' a5 u9 Z3 U# J' t+ }' K
- Typical report rate for 10 touches 刣60 Hz (subject
1 J1 }5 B- k+ h2 f0 f1 Zto configuration)
. G# [" _5 _! k- ~- m- Initial touch latency <25 ms for first touch from idle
4 [  J) x6 _- d0 S0 E(subject to configuration)
) `# W. _: t8 n& R6 ]- Configurable to allow for power and speed9 s) l/ k4 z! K) A' v$ I1 S
optimization9 |2 K9 O. M: F2 i
 Touch panel failure detection* H5 j6 L8 o3 ]5 N3 G0 T+ |
- Automatic touch sensor diagnostics during run
% u/ D- ]' t5 {# D, xtime to support the implementation of safety/ G( [6 x* w. T1 h; P. y/ d
critical features
7 F8 i& G. ~  X& O. g* {, v/ O6 D. B, P- Diagnostics reported using dedicated output pin
/ V6 a% s) h. p/ Wor by standard Object Protocol messages
6 _8 h  l4 U0 V5 ?8 l' n- Configurable test limits0 T7 X& ~! c; H2 b0 D
On-chip Gestures
3 e- X$ e8 g7 ~, m Reports one-touch and two-touch gestures
( g5 @8 z+ e3 o- R4 T6 F, V* S4 T% `1 _) c  B

' m6 }0 J# [: {5 Z- U
发表于 14 分钟前 | 显示全部楼层
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