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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% r5 Z% M2 G; S' V2 P5 g
Technology
' t9 W4 r6 X% @( o Up to 32 X (transmit) lines and 20 Y (receive) lines1 y. k7 }; ^0 `8 v8 v" x
 A maximum of 640 nodes can be allocated to the
& T" J- `2 p- D4 r! t, \2 f: T; `touchscreen
& J% L) l$ W# @3 { Touchscreen size 8.17 inches (16:10 aspect ratio),
7 P( ~0 w. s- j5 h# ?" hassuming a sensor electrode pitch of 5.5 mm. Other
( J1 a  B0 d- n* p( {, \sizes may be possible with different electrode pitches
' y% o! p2 c% yand appropriate sensor material9 U* g5 [9 M# P! N, b
 Multiple touch support with up to 16 concurrent$ m" ~0 I2 J8 q: n5 G' j- ~
touches tracked in real time5 j4 b4 D6 t- C( U
Automotive Applications! V9 _' z) l9 X5 j
 AEC-Q100 Qualified
2 b; w; s& c; V6 [7 b) } Developed following Automotive SPICER Level 3
# W" E& V* X! j1 p4 ucertified processes
' d. ^" ~8 x  D  f5 L) k CISPR-25 compliant (for both mutual and self
* H/ \8 {% S6 v* H' M7 ucapacitance measurements)
( X/ P2 z; n$ O8 N4 J  f9 V; RTouch Sensor Technology
6 U0 ?; I& X0 E* F Discrete/out-cell support including glass and PET filmbased% U. [/ b5 U& O, W. _+ o
sensors" F: O  s5 G8 h# u
 On-cell/touch-on display support including TFT, IPS
5 j+ w' r- ]9 M) _and OLED
% M5 `, g6 V% X0 W0 \6 | Synchronization with display refresh timing capability
% c; j# y1 Z# P  h) i3 n Support for standard (for example, Diamond) and% O* R: M# |- {/ `
proprietary sensor patterns (review of designs by
% g# V( M' S( @9 \1 y3 q3 dMicrochip recommended)( \4 h; O- ?& ?  B: r+ H
Front Panel Material: \7 ?4 E+ P* J' \, T- D, s
 Works with PET or glass, including curved profiles% t5 D8 `, z9 f, a2 r& c
(configuration and stack-up to be approved by# e: d. X' d. R' r
Microchip)8 z( a2 y" [+ F' P
 Glass 0.4 mm to 8 mm (dependent on screen size,
- J% F. u0 p1 U7 D5 ttouch size, configuration and stack-up)
; ]) D! s+ g' L+ c  z9 z! M Plastic 0.2mm to 4 mm (dependent on screen size,- H% v/ j0 t) j$ n! y6 }$ Y
touch size, configuration and stack-up)3 P  p& s) f$ t! K  H: r. i
Touch Performance- U; n9 v% W. t0 i9 {
 Moisture/Water Compensation
2 b0 Y& Z" A$ F! y- No false touch with condensation or water drop up2 _4 E2 {2 z. G
to 22 mm diameter
/ w) ?& r2 U$ Z; [8 A, T& p/ B9 {- One-finger tracking with condensation or water* a" R6 p/ u6 n, t5 A6 |( E, _. U
drop up to 22 mm diameter
6 U& h0 c6 f/ B9 A# Q) s. V1 r& P( a Hover Support% R4 k$ Y4 {  n5 t% w
- Supports one-finger hover up to 20 mm detection6 r/ O& Z7 _0 ?& s# l8 ^/ @% v
and 15 mm tracking range
2 k* l- F- Z! x7 U+ z4 k- Supports multiple finger hover detection
$ o+ Y  |* p) W6 s. F Glove Support- m9 \$ N; \3 A  X5 i4 q( c4 ?
- Multiple-finger glove touches up to 1.5 mm
& w5 w4 t; e5 l: G* n! M, Pthickness (subject to stack-up design)
5 V( {0 K* K6 ^- Single-finger glove touch up to 5 mm thickness
" [4 v/ c0 U& J* D/ k+ l& Z3 ~(subject to stack-up design)
- H0 j; G2 H; r: f$ R+ u3 X Mutual capacitance and self capacitance$ c! R7 p2 ]* R: s2 V1 V
measurements supported for robust touch detection
6 s& \7 M- O; j) D- i9 l$ C6 T P2P mutual capacitance measurements supported for
6 T0 x, E2 V+ x7 {; |extra sensitive touch sensing
9 X* R6 {; S! o& |! E Noise suppression technology to combat ambient and" ]' I- n$ Q+ n. h7 t6 k
power-line noise) [& K: G  S. H
- Up to 240 Vpp between 1 Hz and 1 kHz
7 s( O" Y8 U7 E+ o* h' t& _sinusoidal waveform
& ]' u( A3 K* o4 Y$ K: K3 r- Up to 20 Vpp between 1 kHz and 1 MHz
5 @6 K3 P% c9 q8 X3 rsinusoidal waveform
. x4 C$ t8 U# `# u4 t Burst Frequency
" S5 Y, m9 x9 G! y9 g- Flexible and dynamic Tx burst frequency selection. ?% d) Y1 z- v( a
to reduce EMC disturbance/ W% p. P: M$ b
- Controlled Tx burst frequency drift over process  X( t% R2 e" q& ~
and temperature range
2 k: _* }' ?0 B) M4 O: ]& C* r) H- Firmware-controlled Tx waveform shaping to* e4 l6 D$ T: g/ e% J7 {
reduce emissions
! f) K7 y# o+ p$ W) S Scan Speed$ U) T5 Q# l  h3 ~8 g) Z
- Up to 250 Hz one finger reporting rate (subject to
" U4 P6 H4 z" [$ C2 V0 V6 Nconfiguration)' ?8 L; ^; {& k+ z: O& V
- Typical report rate for 10 touches 刣60 Hz (subject5 M: @! O" p' y- B
to configuration)6 L5 I* g9 ~' O( V9 b/ O' N
- Initial touch latency <25 ms for first touch from idle, K  A- X2 b1 p# j" `  c
(subject to configuration)4 `% o$ ?9 U8 k8 k) ~/ o( }' K' S
- Configurable to allow for power and speed+ P5 L- T4 ~2 a
optimization
. N% U3 T' _/ p2 Y6 H* g$ M# h  C: V Touch panel failure detection- j: W. j% H* r9 A5 A
- Automatic touch sensor diagnostics during run9 T* P8 e( c! V& {1 f3 y; X$ K
time to support the implementation of safety
2 y% r# T. K9 I5 i. v- }6 o, ?critical features
, ~, b' y  T/ a3 d8 T6 H- Diagnostics reported using dedicated output pin
( k& w) }& ^$ ?) }" ]" B  nor by standard Object Protocol messages
8 ?$ o- @. E) o' }. A( T+ e- Configurable test limits
; N' r, g% E' d0 @On-chip Gestures! V1 g9 B3 I8 F
 Reports one-touch and two-touch gestures
8 t. F' j; u2 l. U8 v% H
, J0 H1 B  R0 r- e: B; A+ E) _1 ^5 ~& V# C
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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