Infineon Technologies CY8CTMG200-32LQXI

Overview

CY8CTMG200-32LQXI from Cypress Semiconductor is a programmable mixed-signal PSoC (Programmable System-on-Chip) device integrating an M8C 8-bit CPU core, TrueTouch capacitive sensing subsystem, I²C slave interface, full-speed USB 2.0 PHY, and configurable analog/digital peripherals. It features 16 KB flash, 2 KB SRAM, operates at up to 24 MHz, and supports 32-pin LQFP packaging with 24 GPIOs. It is deployed in human-interface consumer electronics requiring robust touch-button and slider functionality.

For engineers reviewing the CY8CTMG200-32LQXI datasheet, CY8CTMG200-32LQXI pinout, CY8CTMG200-32LQXI application, or CY8CTMG200-32LQXI equivalent, key selection criteria include its integrated TrueTouch sensing engine, USB 2.0 compliance, flash code protection capability, and support for low-power sleep modes with wake-on-touch.

Technical Context

The CY8CTMG200-32LQXI implements a proprietary M8C 8-bit RISC core with Harvard architecture, 24 MHz internal main oscillator (IMO), and dual-clock domain operation (IMO + ILO). Its TrueTouch subsystem includes dedicated analog front-end circuitry-comparators, I/O analog multiplexer, and sigma-delta modulator-for noise-immune capacitive sensing without external components.

It integrates a full-speed USB 2.0 transceiver with on-chip termination and voltage regulator, supporting enumeration as HID class device. The device also embeds a programmable digital system with UDB-based logic blocks, enabling custom state machines, PWM generators, and serial protocols including SPI and I²C slave.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, surface-mount.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable mixed-signal controller applications.

Compared with CY8C20x34-24LQXI and STM32F072CBT6, the CY8CTMG200-32LQXI delivers out-of-box USB HID + TrueTouch functionality with minimal firmware overhead, reducing time-to-market by eliminating driver development and analog tuning effort.

Availability

CY8CTMG200-32LQXI is available at Aetrix Electronics and suitable for smart remote controls, industrial HMI panels, USB peripheral designs, and home appliance interfaces requiring stable component supply and long-term manufacturability.

Supply support for CY8CTMG200-32LQXI 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) is a fabless semiconductor company specializing in programmable mixed-signal, analog, and embedded connectivity solutions.

The CY8CTMG20x series belongs to Cypress's TrueTouch PSoC product line, designed specifically for high-reliability capacitive touch applications requiring integrated USB, low-power operation, and hardware-accelerated sensing without external components.

FAQ

Does CY8CTMG200-32LQXI support USB device enumeration without external components?

Yes. The device integrates a full-speed USB 2.0 PHY with on-chip 1.5 kΩ pull-up resistor control, 3.3 V regulator, and ESD protection. It enumerates as a standard HID device using only the USB_DP/USB_DM pins and VDD/VSS-no external resistors, capacitors, or level shifters are required.

What is the maximum number of capacitive sensors supported in self-capacitance mode?

The CY8CTMG200-32LQXI supports up to 20 self-capacitance sensing channels using its dedicated TrueTouch module. Each channel can be independently configured for scan resolution (8–16 bits), sample averaging (1–64), and baseline update rate, with hardware-accelerated signal processing offloading CPU usage.

Is flash memory reprogrammable in-system, and what protection mechanisms exist?

Yes. The 16 KB flash is fully reprogrammable via SWD or USB bootloader. Protection includes per-row read/write lock bits, SROM-based secure erase/verify functions, and checksum validation on boot. Flash cannot be read out via debug interface when protection is enabled.

Can the M8C CPU execute code directly from flash while TrueTouch scanning runs concurrently?

Yes. The M8C core executes from flash while the TrueTouch subsystem operates autonomously using dedicated analog and digital resources. Scan timing, baseline tracking, and noise filtering occur in hardware, allowing the CPU to handle USB communication or application logic without interrupt latency impact.