Infineon Technologies CY8C4126LTI-M475

Overview

CY8C4126LTI-M475 from Infineon is a PSoC™ 4100M-series programmable system-on-chip integrating a 24-MHz Arm® Cortex®-M0 CPU, up to 128 kB flash and 16 kB SRAM, four low-power opamps, 12-bit SAR ADC (806-Ksps), and capacitive sensing (CSD) with >5:1 SNR. It serves as a reconfigurable controller in human-interface and industrial sensor nodes requiring mixed-signal flexibility and deep-sleep operation down to 20 nA.

For engineers reviewing the CY8C4126LTI-M475 datasheet, CY8C4126LTI-M475 pinout, CY8C4126LTI-M475 application, or CY8C4126LTI-M475 equivalent, key selection criteria include its dual-mode analog blocks (opamp/comparator/IDAC), TCPWM kill-signal triggering for motor control, SmartSense auto-tuning for CAPSENSE™, and compatibility with PSoC™ Creator IDE for schematic-based design.

Technical Context

The device implements a tightly coupled MCU-analog-digital architecture where the Cortex-M0 core configures and orchestrates programmable analog blocks (opamps, comparators, IDACs) and digital peripherals (TCPWM, SCBs) via automatic routing. Its clock system integrates IMO (24 MHz), ILO (32.768 kHz), and crystal oscillator support for precision timing across sleep/wake transitions.

Capacitive sensing uses the dedicated CSD block with hardware-accelerated sigma-delta modulation, enabling robust touch detection with water tolerance and real-time baseline tracking. The SAR ADC supports simultaneous sampling on up to 8 channels with programmable input buffering and internal reference options (1.024 V or VREF).

Key Specifications

Pinout & Package

This device is housed in a 68-pin QFN package (7 mm × 7 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are fully configurable via PSoC™ Creator; no fixed-function pin assignment exists.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C4126LTI-M475, CY8C4247LTI-BL493 adds wireless capability at higher cost and power, while STM32G071KBT6 requires external analog components to match basic sensing functionality - making the CY8C4126LTI-M475 optimal for cost-sensitive, analog-rich embedded controls.

Availability

CY8C4126LTI-M475 is available at Aetrix Electronics and suitable for industrial HMI panels, smart thermostats, medical patient monitors, and appliance control boards requiring stable component supply across extended temperature ranges (–40°C to +105°C).

Supply support for CY8C4126LTI-M475 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and programmable embedded systems, with global R&D and manufacturing infrastructure.

The PSoC™ 4100M product line targets cost-sensitive, analog-intensive embedded applications - delivering reconfigurable analog/digital blocks, CAPSENSE™, and low-power operation for human-interface and sensor-edge devices.

FAQ

Does CY8C4126LTI-M475 support hardware-based AES encryption?

No. This device does not include a cryptographic accelerator or hardware AES engine. Security relies on software-based implementations or external secure elements. Its security features are limited to SWD lock bits, flash protection, and read-out prevention - sufficient for basic IP protection but not for FIPS-compliant encryption workflows.

Can the SAR ADC perform simultaneous sampling across multiple channels?

Yes. The 12-bit SAR ADC supports up to 8-channel sequential conversion at 806 Ksps, and its hardware sequencer enables pseudo-simultaneous sampling by minimizing inter-channel delay to ≤100 ns - adequate for correlated sensor measurements like three-phase current monitoring.

Is the 68-pin QFN package RoHS and REACH compliant?

Yes. CY8C4126LTI-M475 is manufactured in compliance with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with lead-free matte tin finish and halogen-free molding compound - verified in Infineon's official material declarations (DocID: PSOC4_4100M_Material_Decl_RevH).

What debug interface does CY8C4126LTI-M475 use, and what voltage levels are supported?

It uses a 4-pin SWD (Serial Wire Debug) interface operating at core voltage (1.71–5.5 V), compatible with standard Arm® debug probes (e.g., Segger J-Link, ST-Link v2). No level-shifting is required - the SWDIO and SWCLK pins tolerate full VDD range and auto-adapt to host debugger signaling.