Infineon Technologies CY8C4014SXI-411T

Overview

CY8C4014SXI-411T from Infineon (acquired Cypress) is a 32-bit ARM Cortex-M0 programmable system-on-chip (PSoC 4000 family) integrating MCU, CapSense capacitive sensing, two programmable IDACs, one low-power comparator, and a multi-master I²C interface. It operates from 1.71–5.5 V, delivers 16 MHz CPU performance, includes 16 KB flash and 2 KB SRAM, and targets embedded human-interface applications such as touch-button control panels.

For engineers reviewing the CY8C4014SXI-411T datasheet, CY8C4014SXI-411T pinout, CY8C4014SXI-411T application, or CY8C4014SXI-411T equivalent, key selection criteria include Deep Sleep wake-up latency (35 µs), I²C address-match wake capability, SmartSense™ auto-tuning for CapSense, TCPWM dead-band PWM generation, and SWD debug interface compatibility with industry-standard ARM tools.

Technical Context

The device implements a tightly integrated mixed-signal architecture where the ARM Cortex-M0 core interfaces via AHB-Lite to programmable analog blocks (IDACs, comparator) and digital peripherals (TCPWM, SCB-I²C) through a configurable interconnect matrix. All analog and digital resources are routed dynamically using PSoC Creator's automatic hardware routing engine.

CapSense functionality relies on the Cypress Capacitive Sigma-Delta (CSD) sensing engine, which uses the internal 1.2-V reference and one of the two IDACs for sensor excitation, while the comparator serves dual roles - as analog threshold detector and CSD signal processing element - with hardware-accelerated noise rejection and water-tolerance support.

Key Specifications

Pinout & Package

Package: 24-pin QFN (4 × 4 mm, 0.5 mm pitch), RoHS-compliant, exposed thermal pad. Pin mapping validated per Cypress datasheet 001-89638 Rev. *B, Figure 6 (24-pin QFN pinout).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F070F6P6 and MAX32660, CY8C4014SXI-411T uniquely integrates hardware-accelerated CapSense, programmable IDACs, and analog routing in a single die - enabling robust touch interfaces with minimal external components and no firmware-based sensor calibration overhead.

Availability

CY8C4014SXI-411T is available at Aetrix Electronics and suitable for touch-control panels, industrial HMIs, medical device interfaces, and smart lighting modules requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.

Supply support for CY8C4014SXI-411T 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 acquired Cypress Semiconductor in 2020 and now owns the PSoC® portfolio. Cypress pioneered programmable analog-digital SoC architectures for embedded control and human-interface applications.

The PSoC 4000 product line was designed specifically for cost-sensitive, space-constrained embedded systems requiring integrated capacitive touch, low-power operation, and rapid firmware development - targeting appliance, medical, and industrial end equipment.

FAQ

What is the maximum operating frequency of the ARM Cortex-M0 core in CY8C4014SXI-411T?

The CY8C4014SXI-411T runs its ARM Cortex-M0 CPU at up to 16 MHz. This frequency is derived from the internal main oscillator (IMO), which defaults to 24 MHz and is divided down. The CPU achieves zero wait-state execution at this speed due to the integrated flash accelerator, ensuring deterministic real-time response for CapSense scanning and I²C communication tasks.

Does CY8C4014SXI-411T support hardware-based capacitive touch sensing without external components?

Yes. The device integrates Cypress's proprietary Capacitive Sigma-Delta (CSD) sensing engine, two programmable IDACs, and a dedicated comparator - all routed via internal analog multiplexers. This enables self-contained touch button, slider, and proximity sensing using only PCB traces as sensors, with no external resistors, capacitors, or dedicated touch ICs required.

Can CY8C4014SXI-411T wake from Deep Sleep using I²C traffic alone?

Yes. Its Serial Communication Block (SCB) supports I²C address-match wake: the peripheral remains powered and monitors the bus for its assigned 7-bit slave address while the CPU, flash, SRAM, and high-speed clocks are fully disabled. Wake occurs in ≤35 µs upon match, enabling ultra-low-power remote command reception without continuous polling.

Is SWD debug access permanently disabled after enabling flash protection?

Yes. When flash protection bits are programmed to disable debug, the SWD interface is permanently locked - no external tool or voltage glitching can restore access. Re-enabling debug requires full chip erase, which clears all flash and protection settings. This provides tamper-resistant firmware security for production devices handling sensitive algorithms or credentials.