Infineon Technologies CY8C20336H-24LQXI

Overview

CY8C20336H-24LQXI from Cypress Semiconductor is a haptics-enabled CapSense® programmable mixed-signal controller featuring an M8C 8-bit Harvard-architecture CPU (up to 24 MHz), 8 KB flash/1 KB SRAM, integrated TS2000 ERM haptics driver, and configurable capacitive sensing for up to 28 inputs. It operates from 1.71 V to 5.5 V across –40 °C to +85 °C and supports I²C slave (up to 400 kHz), SPI master/slave, and three 16-bit timers - deployed in touch-enabled human interface modules for industrial HMIs and consumer electronics.

For engineers reviewing the CY8C20336H-24LQXI datasheet, CY8C20336H-24LQXI pinout, CY8C20336H-24LQXI application, or CY8C20336H-24LQXI equivalent, key selection criteria include its integrated haptics control logic, SmartSense™ auto-tuning capability, 24-pin QFN package with 28 GPIOs (all dual-mode analog/digital), and on-chip 32-kHz precision oscillator for low-power wake-up timing.

Technical Context

The device integrates a dedicated CapSense analog block with hardware-accelerated scanning logic, internal 1-V/1.2-V analog reference, and global analog mux bus enabling simultaneous connection of any GPIO to comparators or ADC. Its haptics subsystem implements Immersion TS2000 firmware-controlled ERM drive with up to 14 preloaded effects and three selectable motor configurations.

Power management includes an internal LDO regulator (1.8/2.5/3.0 V selectable), ILO (32 kHz) for sleep timers, IMO (6/12/24 MHz ±5%), and POR/LVD circuitry eliminating external supervision. All GPIOs support hot-swap, configurable thresholds (Port 1), and dual-mode operation - critical for robust touch sensing in noisy environments.

Key Specifications

Pinout & Package

Package: 24-pin 4 × 4 × 0.6 mm QFN (LQFP-style leadless, exposed thermal pad).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MTCH101-I/ST and CY8C20236-24LQXI, CY8C20336H-24LQXI delivers full turnkey haptics + touch functionality in one die - reducing component count, firmware integration effort, and qualification cycles for production touch interfaces.

Availability

CY8C20336H-24LQXI is available at Aetrix Electronics and suitable for industrial HMIs, medical device keypads, consumer appliance controls, and automotive cabin interfaces requiring stable component supply and long-term lifecycle support.

Supply support for CY8C20336H-24LQXI 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 applications with emphasis on system-level integration and developer productivity.

The CY8C20xxx PSoC® CapSense family targets touch-based human-machine interfaces requiring integrated sensing, processing, and haptic feedback - eliminating discrete controller + driver combinations in space-constrained designs.

FAQ

Does CY8C20336H-24LQXI support I²C clock stretching?

No, the I²C slave implementation does not support clock stretching under most operating conditions. It uses hardware address validation and a 32-byte RAM buffer to minimize CPU intervention, allowing low-power operation with sub-100 µA active sleep current. External masters must adhere to standard timing without expecting stretch capability.

What is the maximum number of CapSense electrodes supported?

The device supports up to 28 capacitive sensing inputs, configurable across all GPIOs (P0–P1). This includes combinations of buttons, sliders, touchpads, and proximity sensors - with hardware-accelerated scanning and SmartSense™ auto-tuning applied per electrode group.

Can the internal 24 MHz IMO be used as the system clock for haptics waveform generation?

Yes, the internal main oscillator (IMO) at 24 MHz ±5% serves as the primary clock source for both the M8C CPU and the TS2000 haptics engine. It enables precise timing of ERM drive pulses and supports dynamic frequency modulation across the 14 built-in waveforms without requiring external clock components.

Is the exposed thermal pad on the 24-pin QFN electrically connected?

Yes, the exposed thermal pad is internally connected to VSS and must be soldered to a solid ground plane on the PCB for thermal dissipation and noise immunity. Cypress recommends a 4×4 array of thermal vias (0.3 mm diameter) connecting the pad to inner-layer ground planes to maintain junction temperature below 125 °C at full I/O drive load.