Infineon Technologies CY8C20236A-24LKXI

Overview

CY8C20236A-24LKXI from Cypress Semiconductor is a PSoC® 1 mixed-signal array IC configured with the TS2000 Haptics User Module for tactile feedback generation. It integrates two 16-bit timer resources (Timer0 and Timer2) to deliver 23 kHz PWM output and precise 5-ms haptic effect update intervals, operates at up to 3.3 V, and supports up to 14 Immersion TouchSense 2000 haptic effects in embedded capacitive touch interfaces.

For engineers reviewing the CY8C20236A-24LKXI datasheet, CY8C20236A-24LKXI pinout, CY8C20236A-24LKXI application, or CY8C20236A-24LKXI equivalent, key selection criteria include PWM frequency stability (>22 kHz), 5-ms effect timing accuracy (±10%), actuator drive compatibility (Sanyo NRS-2574i or Jinlong Z6DL2A017000B), and flash/RAM usage trade-offs across enabled effects.

Technical Context

The CY8C20236A-24LKXI implements haptic feedback using firmware-driven dual-timer architecture: Timer_PWM generates ~23 kHz PWM output (FPWM = FClock / 255), while Timer_TMR provides 5-ms intervals for effect sequencing. Both timers operate from the IMO clock (recommended 24 MHz).

It requires external actuator drive circuitry (e.g., TPA6205A amplifier) and supports direct or polled update methods. CPU load is zero when no effect is playing; during playback, ISR duration is ~90 clock cycles, and system code execution continues concurrently.

Key Specifications

Pinout & Package

Package: 24-pin QFN (5 mm × 5 mm, 0.5 mm pitch), RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C20336H and CY8C22345H, the CY8C20236A-24LKXI trades higher CPU loading during playback for minimal resource footprint and QFN packaging suited to space-constrained portable designs - making it optimal for cost-sensitive, size-limited haptics implementations.

Availability

CY8C20236A-24LKXI is available at Aetrix Electronics and suitable for smartphone touch interfaces, wearable fitness trackers, industrial control panels, and medical handheld scanners requiring stable component supply and long-term lifecycle support.

Supply support for CY8C20236A-24LKXI 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, offering PSoC architecture with configurable analog and digital blocks.

The CY8C20xx6A series targets low-power capacitive touch systems; the CY8C20236A-24LKXI variant is optimized for integrated haptics feedback in compact, battery-powered devices.

FAQ

What is the minimum required IMO clock frequency to achieve 23 kHz PWM output?

The minimum IMO clock frequency is 5.6 MHz. This ensures FPWM = FClock / 255 ≥ 22 kHz. At 5.6 MHz, FPWM = 21.96 kHz - just below threshold; 6.0 MHz yields 23.53 kHz and is recommended for margin. The datasheet specifies FClock range as 5.6–13 MHz for guaranteed compliance.

Can CY8C20236A-24LKXI drive piezoelectric actuators?

No - the TS2000 User Module and associated drive circuitry (e.g., TPA6205A) are characterized only for Eccentric Rotating Motor (ERM) actuators: Sanyo NRS-2574i and Jinlong Z6DL2A017000B. Piezo drivers require different voltage swing, current profile, and timing, and are not supported by this implementation.

How does disabling unused haptic effects impact memory usage?

Disabling effects reduces flash usage by omitting their waveform data and processing logic. Worst-case flash is 15,922 bytes with all 14 effects enabled; disabling half typically saves ~3–4 kB. RAM usage also decreases because fewer effect buffers and state variables are allocated - from up to 1,803 B down to ~43 B in minimal configuration.

Is the 5-ms haptic update interval adjustable?

Yes - the EffectUpdateDivider parameter allows tuning within ±10% tolerance (i.e., 4.5–5.5 ms). It is calculated as (FClock/(200 Hz × 255)) − 1 and must be set between 109 and 255. Changing it alters the timer reload value but maintains the 200 Hz update rate; deviation beyond ±10% risks perceptible effect distortion.