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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 Touchscreen
0 g5 X; [2 F5 D/ X; Q( c+ uTechnology
5 Y& T% D* G5 W7 P$ R Up to 32 X (transmit) lines and 20 Y (receive) lines
  q1 C7 T) N$ N A maximum of 640 nodes can be allocated to the8 l3 X6 G$ _% r" Z
touchscreen4 Z3 C& l! k9 D9 e9 m5 W
 Touchscreen size 8.17 inches (16:10 aspect ratio),
/ j- c  W7 q$ O" T  Uassuming a sensor electrode pitch of 5.5 mm. Other
4 T2 s% C0 \/ S9 tsizes may be possible with different electrode pitches
& T( ?% L# e8 aand appropriate sensor material, }: W. K7 i+ B4 [
 Multiple touch support with up to 16 concurrent
- w% U  ]; ~7 p/ jtouches tracked in real time
7 T: |/ D5 l/ L) ^: n7 V8 Y1 Q( m6 kAutomotive Applications
1 N5 O6 z. D* X AEC-Q100 Qualified& y' _' W, b7 d) U( Z2 W
 Developed following Automotive SPICER Level 3
$ d# q' ?& u# ]) k6 |+ gcertified processes
: y6 ]; t) e6 D' y. V CISPR-25 compliant (for both mutual and self$ b9 h& @! ^9 O7 R+ v
capacitance measurements)/ G9 O7 W1 I! ?# a/ V7 K3 q/ `
Touch Sensor Technology
5 ^) V$ D& p+ C; y2 F- g$ y Discrete/out-cell support including glass and PET filmbased: p& f' G, _2 K  i# i3 U
sensors- X* v7 M7 k5 @: ]8 U
 On-cell/touch-on display support including TFT, IPS2 x$ j0 @! y) x
and OLED
  X* z  V* h9 ~& q4 O0 s Synchronization with display refresh timing capability
9 X% `, [# r8 d$ ~* d Support for standard (for example, Diamond) and
7 Q, d" o  u0 W8 P3 d, \proprietary sensor patterns (review of designs by& C$ |1 }7 h5 _4 ]1 Y0 r, [
Microchip recommended)
8 @2 z1 o3 k$ wFront Panel Material/ Y3 z, j* f9 M3 y- h
 Works with PET or glass, including curved profiles' e+ Q$ D- W) p8 Z0 j
(configuration and stack-up to be approved by
2 @+ m: V3 j2 qMicrochip)( i9 }% {/ J* A9 r% ?7 y
 Glass 0.4 mm to 8 mm (dependent on screen size,
% d8 V9 T" K. ]2 h! Dtouch size, configuration and stack-up)) k7 t* b& Q6 x! u% x* u' E
 Plastic 0.2mm to 4 mm (dependent on screen size,; I; e( u6 E5 z3 f9 R+ d
touch size, configuration and stack-up)! C6 ^( _: c0 _) k
Touch Performance' D: w" z$ p" h) v7 v
 Moisture/Water Compensation( b3 L6 r5 w* [# O
- No false touch with condensation or water drop up) l- O, S: Z' W5 z# N9 h" ^# P) [
to 22 mm diameter" y9 f7 F6 A9 P: p+ L9 K8 K
- One-finger tracking with condensation or water
% d; l- x% x& ]( E- ldrop up to 22 mm diameter
" h8 ^1 k4 h+ a Hover Support
" r" W& Q; I# h4 O- Supports one-finger hover up to 20 mm detection+ `) `- I5 r( N% J% \0 s* P
and 15 mm tracking range7 ?3 R0 {/ J( K% {% H% l' c
- Supports multiple finger hover detection6 I0 _  c4 T5 l: A, O& X0 Y
 Glove Support
9 |1 i0 D& g% t- Multiple-finger glove touches up to 1.5 mm
2 ~9 A  v- K- m8 d$ i* [( zthickness (subject to stack-up design)- H# K" l9 ^3 J. k0 g
- Single-finger glove touch up to 5 mm thickness
- i# ^% M* [; h, k4 `(subject to stack-up design)
1 B% X  P. k! z* S+ f& B Mutual capacitance and self capacitance
) ~8 i! k/ t% e3 |8 S0 m% x# vmeasurements supported for robust touch detection
4 X7 S) S* \7 F5 w' n0 Y P2P mutual capacitance measurements supported for7 e- e- y( y! T4 W6 D2 V
extra sensitive touch sensing
/ a2 l- d  f6 g6 Q2 H Noise suppression technology to combat ambient and+ X5 H' n/ n1 ]* d1 R& r! y4 ^
power-line noise
! ]* y  s9 Q' d2 I* G; G- Up to 240 Vpp between 1 Hz and 1 kHz/ [! S7 j/ m3 f5 ]+ \8 h# ]8 F  ?
sinusoidal waveform
" Y* d9 x4 N9 \! n0 Z. ~1 `8 k- Up to 20 Vpp between 1 kHz and 1 MHz' ]' Y) A. k. Q3 O  h/ `
sinusoidal waveform- @+ h% n: ~) I4 a
 Burst Frequency
  {4 H6 I* `4 H$ i9 o- Flexible and dynamic Tx burst frequency selection
' T" ]2 }+ u6 p3 f" X* d6 ?to reduce EMC disturbance# o1 I" e( M; ?7 y# @
- Controlled Tx burst frequency drift over process% j' j7 ]* A7 W! Q% Y* e* r
and temperature range
# u( m6 N" G9 `' _: J/ G& I" @! r- Firmware-controlled Tx waveform shaping to
- s; |" f8 ]+ j/ N; ?; K+ creduce emissions
6 Z# i6 g9 Y/ U8 c; e7 { Scan Speed
) d8 h7 L8 s  P3 \) m3 [- D* u# J' Z- Up to 250 Hz one finger reporting rate (subject to% V" p# i, c1 @0 I- `4 q
configuration)8 H1 l# i8 w* b8 k+ b6 T) i
- Typical report rate for 10 touches 刣60 Hz (subject7 W/ {5 C2 [6 ?5 {* _
to configuration)7 Y. q/ `1 Q- _( ^
- Initial touch latency <25 ms for first touch from idle
: K5 K) Q( h/ V5 Q(subject to configuration)
8 _$ @$ b5 h' p* L! K- Configurable to allow for power and speed; @! h% C" N* G$ U" d0 V
optimization  v5 D$ }/ ]/ q: P
 Touch panel failure detection4 e5 Y* e& l1 s  M1 ~# j$ p" y
- Automatic touch sensor diagnostics during run
5 }$ C$ H+ N: x  k( G% c) D4 J  ~time to support the implementation of safety" D6 y% c& D$ T
critical features5 e+ D% M. {; f: X) ]
- Diagnostics reported using dedicated output pin+ h' i. T  _$ R  ]
or by standard Object Protocol messages4 y( U5 Y0 K) h# R% i" x% u
- Configurable test limits
/ U; J8 W  g& O+ V  ?  `On-chip Gestures& i6 C2 q& f, x  `- L
 Reports one-touch and two-touch gestures9 F8 i+ ~( P7 h/ [& j

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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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