ATMXT1386E-Z2U - maXTouch 1386-Node Touch Controller | Microchip
MPN： ATMXT1386E-Z2U ✗ 停產ATMXT1386E-Z2U 概覽
A capacitive touchscreen controller is a type of sensor interface IC that measures mutual capacitance changes across a touch sensor grid, classifies and tracks finger touches, and reports coordinates to a host processor. Within the system hierarchy, it sits in the signal chain between the touch sensor (a patterned ITO or similar electrode layer on the display) and the host MCU or application processor, forming part of the broader human-machine interface (HMI) subsystem.
Key features include the 1386 mutual-capacitance node count, which suits medium-to-large touch panels; the patented charge-transfer acquisition engine, which delivers high signal-to-noise measurement accuracy; and multi-touch tracking of up to 16 touches. The high-performance architecture enables fast response and unlimited-touch reporting up to the 16-touch limit, making the device suitable for demanding interactive displays.
Technically, the mXT1386E uses a unique charge-transfer acquisition engine implementing the QMatrix capacitive sensing method patented by Atmel. Coupled with a state-of-the-art 32-bit AVR CPU, the entire touchscreen sensing solution can measure, classify and track finger touches with a high degree of accuracy. As a multi-chip (4-chip) solution, the family coordinates sensing across the node array within one firmware-managed platform.
Typical applications include tablet and e-reader touchscreens, industrial HMI panels, and consumer electronics displays requiring robust multi-touch performance with gloved-hand and noise immunity characteristic of the maXTouch platform.
Design consideration: this part is a multi-chip solution, so verify board space, mechanical stacking and firmware/configuration compatibility against the replacement controller before redesign. Note that Microchip has officially recommended the ATMXT1066T2 as the alternative touch controller for this family.
This page synthesizes distributor sourcing data, the manufacturer-recommended replacement, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 ATMXT1386E-Z2U — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATMXT1386E-Z2U （相同外形與佔位） — 差異在於 Core Technology.
ATMXT1066T2
✅ 直接替換📋 參考替代品（不在目錄中）
ATMXT1386E-Z2U 規格
| Product Type | Capacitive Touchscreen Controller |
| Product Family | maXTouch (mXT1386E) |
| Touch Node Count | 1386 nodes |
| Solution Architecture | Multi-chip (4 chips) |
| Core Technology | 32-bit AVR microcontroller |
| Sensing Method | QMatrix charge-transfer (mutual capacitance) |
| Maximum Touch Points | 16 touches |
| 生命週期狀態 | EOL - recommended alternative ATMXT1066T2 |
ATMXT1386E-Z2U standard 腳位配置指南
ATMXT1386E-Z2U（standard 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： ATMXT1386E-Z2U.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATMXT1386E-Z2U 適用於 6 應用s: Tablet and E-Reader Touchscreens, Industrial HMI Panels, Interactive Kiosks and POS Terminals, Automotive Infotainment Touch Displays, Medical Equipment Touch Interfaces, Smart Appliances and IoT Control Panels.
Tablet and E-Reader Touchscreens
The ATMXT1386E-Z2U fits medium-sized tablet and e-reader displays where its 1386 mutual-capacitance nodes map to a dense electrode grid. The 16-touch limit and 32-bit AVR tracking engine support multi-finger gestures and palm rejection with fast response, which is important for smooth scrolling and handwriting on portable devices. The QMatrix charge-transfer method provides strong noise immunity against display refresh interference. As the part is EOL, new tablet designs should adopt the ATMXT1066T2, while existing products can source residual stock for service and repair.
推薦
Industrial HMI Panels
Industrial human-machine interface panels benefit from the maXTouch platform's noise robustness in electrically harsh environments near motors, relays and switching supplies. The ATMXT1386E-Z2U's charge-transfer acquisition engine accurately classifies touches across 1386 nodes even with gloved operation or water droplets on the panel, and the 16-touch capability supports multi-operator or gesture-driven control surfaces. Because production has ended, maintenance engineers should qualify the ATMXT1066T2 and update maXTouch configuration objects during the next board revision rather than relying on broker stock.
推薦
Interactive Kiosks and POS Terminals
Point-of-sale and self-service kiosk terminals use multi-touch capacitive controllers to deliver smartphone-like interaction on customer-facing displays. The ATMXT1386E-Z2U handles up to 16 simultaneous touches across its 1386-node array, enabling pinch-zoom, on-screen signature capture and multi-user input. The 32-bit AVR core performs classification and tracking onboard, offloading the host processor. For new kiosk platforms, designers should specify the ATMXT1066T2 to guarantee supply, reusing the maXTouch firmware toolchain and configuration framework for a controlled migration.
推薦
Automotive Infotainment Touch Displays
maXTouch controllers are widely used in automotive center-stack and cluster displays, where mutual-capacitance sensing with charge-transfer acquisition withstands LED backlight noise, RF interference and wide temperature swings. The ATMXT1386E-Z2U's 1386-node array and 16-touch tracking support large navigation screens with multi-finger gestures. EOL status makes it unsuitable for new automotive programs; existing service stock should be audited for date codes, and the ATMXT1066T2 family should be evaluated for carry-over designs per Microchip's migration recommendation.
推薦
Medical Equipment Touch Interfaces
Medical diagnostic and monitoring equipment requires reliable, hygienic capacitive touch input that works through protective glass overlays and with gloved hands. The maXTouch charge-transfer sensing of the ATMXT1386E-Z2U delivers accurate touch classification across 1386 nodes, supporting intuitive gesture-driven user interfaces on patient monitors and portable diagnostic devices. Because the part is discontinued, medical device manufacturers should plan regulatory-compliant migration to the ATMXT1066T2, verifying that firmware configuration changes do not trigger re-certification of the human-machine interface subsystem.
推薦
Smart Appliances and IoT Control Panels
Smart home appliances, thermostats and connected control panels increasingly replace mechanical buttons with glass-front capacitive touch surfaces. The ATMXT1386E-Z2U provides a 1386-node sensing array with up to 16 touches, enabling slider, wheel and multi-finger gestures on appliance fascias, while the onboard 32-bit AVR reports processed touch data to the main IoT controller, simplifying host firmware. For new appliance platforms the EOL status rules it out; adopt the ATMXT1066T2 with updated maXTouch configuration to preserve gesture functionality with guaranteed long-term supply.
推薦
推薦產品摘要
工程參考資料，適用於 ATMXT1386E-Z2U — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATMXT1066T2 |
|---|---|---|
| Brand | Microchip Technology (Atmel legacy) | Microchip Technology |
| Touch Node Count | 1386 nodes | 1066 nodes |
| Sensing Method | QMatrix charge-transfer (mutual capacitance) | maXTouch mutual-capacitance charge-transfer |
| Core | 32-bit AVR | maXTouch platform core |
| Lifecycle Status | EOL | Active (recommended alternative) |
主要差異化特點
- Largest node count in this generation of maXTouch (對比ATMXT1066T2)
- 16-touch multi-touch support (對比ATMXT1066T2)
- Supply continuity trade-off (對比ATMXT1066T2)
設計說明
The ATMXT1386E-Z2U is EOL. Do not start new designs with this part; Microchip officially recommends the ATMXT1066T2 as the alternative. Because the ATMXT1386E-Z2U is a 1386-node 4-chip multi-chip solution and the ATMXT1066T2 is a 1066-node device, electrode mapping, maXTouch configuration objects and host firmware touch-report parsing all require re-verification during migration - budget firmware and panel re-characterization time in the project plan.
Mutual-capacitance touch controllers like the mXT1386E are sensitive to noise from display backlight inverters and switching regulators. Follow the maXTouch PCB layout guidance: route sensor lines on an inner layer shielded by ground, keep the charge-transfer sense traces away from high-dv/dt nets, and star-ground the analog sensing domain. Verify touch performance with the actual display powered at maximum brightness, since LCD noise is the dominant field-failure cause for touch controllers.
Estimated: as a 4-chip maXTouch solution, the ATMXT1386E-Z2U draws more supply current than single-chip maXTouch controllers; exact figures are not published in the sources reviewed ([DATA_NEEDED: supply current]). Size the analog supply regulator with margin over the single-chip estimate and add local decoupling per chip. Confirm authoritative current figures from the official mXT1386E datasheet before finalizing power budget.
合規資訊
Compliance data not present in the sources reviewed. Confirm RoHS/REACH status on the official Microchip product page for ATMXT1386E.