Infineon Technologies CY8C20767-24FDXCT

Overview

CY8C20767-24FDXCT from Cypress Semiconductor is a 1.8 V CapSense® controller with SmartSense™ auto-tuning, integrating an M8C 8-bit Harvard-architecture CPU (24 MHz max), 31 capacitive sensing inputs, 6 slider channels, and proximity sensing capability. It delivers 0.1 pF sensitivity, 28 µA/sensor average current at 125 ms scan interval, and operates from 1.71–5.5 V across –40 °C to +85 °C - deployed in industrial HMI touch panels with thick glass overlays.

For engineers reviewing the CY8C20767-24FDXCT datasheet, CY8C20767-24FDXCT pinout, CY8C20767-24FDXCT application, or CY8C20767-24FDXCT equivalent, key selection criteria include CSD PLUS™ sensing algorithm performance, SmartSense_EMC_PLUS runtime tuning behavior, driven-shield GPIO allocation, I2C slave timing modes (50/100/400 kHz), and flash/SRAM configuration (32 KB/2 KB).

Technical Context

The device implements a dedicated CapSense PSoC block with patented Capacitive Sigma Delta PLUS (CSD PLUS™) sensing engine, supporting simultaneous scanning of up to 31 inputs via configurable GPIOs and internal analog mux bus. Its SmartSense_EMC_PLUS auto-tuning dynamically adjusts IDAC, scan resolution, and baseline tracking in real time without host intervention.

It integrates four clock sources - 6/12/24 MHz IMO, 32 kHz ILO, external 32 kHz crystal, and external clock input - enabling precise timing control for low-power sleep/wake cycles and noise-immune sensor scanning. The analog subsystem includes dual comparators, 10-bit incremental ADC, and programmable LDO for PSRR-critical sensing paths.

Key Specifications

Pinout & Package

Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad. Pinout validated per Cypress Document 001-69257 Rev. *Q, pages 12 and 33–36.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar capacitive sensing controller applications.

Compared with MTCH101-DFR and STM32F072CBT6, CY8C20767-24FDXCT provides out-of-box robustness for thick-overlay and high-noise environments due to its hardware-accelerated CSD PLUS™ engine, integrated SmartSense_EMC_PLUS, and five driven-shield pins - reducing time-to-market by eliminating sensor firmware tuning cycles.

Availability

CY8C20767-24FDXCT is available at Aetrix Electronics and suitable for industrial HMI, medical device interfaces, consumer appliance controls, and automotive cabin panels requiring stable component supply and long-term lifecycle assurance.

Supply support for CY8C20767-24FDXCT 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 control, sensing, and connectivity - headquartered in San Jose, CA, with global manufacturing and support infrastructure.

CY8C20xx7/S belongs to Cypress's CapSense® PSoC® family, engineered specifically for self-contained, noise-immune capacitive touch and proximity sensing in harsh industrial and consumer environments - minimizing external components and firmware tuning effort.

FAQ

What is the maximum overlay thickness supported by CY8C20767-24FDXCT?

The device supports up to 15 mm of glass or 5 mm of plastic overlay thickness, verified under standard lab conditions using CSD PLUS™ sensing with SmartSense_EMC_PLUS enabled. Performance depends on electrode design, trace routing, and grounding - actual thickness must be validated with final PCB layout and overlay material.

Does CY8C20767-24FDXCT require external tuning components?

No external tuning components are required. The device integrates all necessary analog resources including modulator capacitor (C_external on P0[1]/P0[3]), internal voltage references, and programmable IDACs. SmartSense_EMC_PLUS auto-tunes these parameters dynamically during operation, eliminating manual calibration.

Can CY8C20767-24FDXCT operate in deep-sleep mode while maintaining proximity wake capability?

Yes. In Deep Sleep mode (0.1 µA typical), the device retains I2C address-match wake and can configure specific GPIOs for hardware-based proximity wake using the internal low-power comparator and analog mux. Proximity detection continues at reduced scan rate without CPU involvement.

How many simultaneous sliders can CY8C20767-24FDXCT manage?

The device supports up to six independent slider channels, each configurable with 8–128 segments depending on resolution setting. All six operate concurrently with buttons and proximity sensors using time-multiplexed scanning controlled by the dedicated CapSense block - no CPU overhead required.