Infineon Technologies CY8CTMG100-32LKXI

Overview

CY8CTMG100-32LKXI from Cypress Semiconductor is a TrueTouch™ capacitive touchscreen controller IC with M8C Harvard architecture, supporting up to 25 X/Y sensor inputs, 320×240 resolution at 2.6", and I²C slave interface (1.8 V logic). It delivers gesture detection, operates from 2.4–5.25 V, and targets embedded touch UIs in industrial handhelds and portable medical devices.

For engineers reviewing the CY8CTMG100-32LKXI datasheet, CY8CTMG100-32LKXI pinout, CY8CTMG100-32LKXI application, or CY8CTMG100-32LKXI equivalent, key selection criteria include multi-touch scan rate (300 µs/sensor), low-power operation (1.9 mA @ 8 ms report rate), industrial temperature range (–40°C to +85°C), and on-chip flash/SRAM configuration for firmware customization.

Technical Context

The CY8CTMG100 integrates a programmable M8C core running up to 12 MHz with dedicated analog front-end circuitry for mutual-capacitance sensing across configurable X/Y electrode arrays. Its internal 6/12 MHz oscillator and 32 kHz low-speed clock support synchronized scanning and deep-sleep modes.

It implements true multi-touch tracking via on-die firmware with gesture library support, uses an internal voltage reference for ADC consistency, and provides configurable I²C (up to 400 kHz) and SPI (46.9 kHz–3 MHz) interfaces for host communication and system integration.

Key Specifications

Pinout & Package

Package: 32-pin QFN, 5 mm × 5 mm × 0.6 mm body, 0.5 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-touch gesture controller applications.

Compared with MA3201A and TSC2007IPWR, CY8CTMG100-32LKXI uniquely integrates gesture firmware, partial flash updates, and mutual-capacitance scanning-enabling faster time-to-market for compact multi-touch UIs without host dependency.

Availability

CY8CTMG100-32LKXI is available at Aetrix Electronics and suitable for industrial handheld terminals, portable medical monitors, smart home control panels, and POS terminal keypads requiring stable component supply and long-term lifecycle assurance.

Supply support for CY8CTMG100-32LKXI includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) designs programmable mixed-signal ICs for embedded systems, emphasizing flexibility, low power, and system-level integration.

CY8CTMG100 belongs to the TrueTouch™ family, engineered specifically for high-reliability projected-capacitive touchscreens in space-constrained, battery-aware, and industrial-grade applications.

FAQ

What is the maximum number of simultaneous touch points supported by CY8CTMG100-32LKXI?

The CY8CTMG100-32LKXI supports true multi-touch with up to five simultaneous touch points, determined by its 25 X/Y electrode matrix and on-chip firmware resolution. This enables complex gestures like two-finger zoom and three-finger swipe without host intervention. The device reports raw coordinate data and pre-processed gesture events via I²C, and its scan architecture ensures consistent tracking even during rapid motion.

Does CY8CTMG100-32LKXI require an external crystal for operation?

No, CY8CTMG100-32LKXI operates using its internal ±5% 6 MHz or 12 MHz oscillator for normal scanning mode. An external crystal on XTAL1/XTAL2 is optional and only needed when tighter timing accuracy is required-for example, in EMI-sensitive environments or when synchronizing with external video frames. The internal 32 kHz low-speed oscillator suffices for sleep/wake timing and watchdog functions.

Can the CY8CTMG100-32LKXI be programmed in-system after soldering?

Yes, it supports In-System Serial Programming (ISSP) via dedicated pins (SCLK, SDATA, XRES), enabling full firmware updates, calibration parameter loading, and protection-mode configuration without removing the device from the PCB. Cypress PSoC Designer™ provides GUI-based ISSP tools, and the 8 KB flash supports ≥50,000 erase/write cycles with sector-level locking for secure bootloader partitioning.

How does the CY8CTMG100-32LKXI handle noisy environments such as near switching power supplies?

It employs correlated double sampling, programmable scan frequency agility, and adaptive baseline tracking to suppress 50/60 Hz noise and broadband EMI. The analog front-end includes shield drivers and guard ring support, and firmware includes noise-rejection filters that dynamically adjust integration time per electrode. These features are validated per IEC 61000-4-3 (radiated RF) and IEC 61000-4-6 (conducted RF) test plans in typical industrial layouts.