Infineon Technologies CY8C20236A-24LKXIT

Overview

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

For engineers reviewing the CY8C20236A-24LKXIT datasheet, CY8C20236A-24LKXIT pinout, CY8C20236A-24LKXIT application, or CY8C20236A-24LKXIT equivalent, key selection criteria include PWM frequency stability (23 kHz), firmware-driven timer resource allocation, actuator enable signal timing, flash usage per enabled effect (up to 15.9 kB), and compatibility with Sanyo NRS-2574i or Jinlong Z6DL2A017000B actuators.

Technical Context

The CY8C20236A-24LKXIT implements haptic feedback using two dedicated 16-bit timers: Timer_PWM generates ~23 kHz PWM output (FPWM = FClock / 255) with ≤90-cycle ISR duration, while Timer_TMR provides precise 5-ms intervals (±10% tolerance) for effect sequencing. Both timers operate under IMO clock control, with recommended 24 MHz CPU clock alignment.

It requires external actuator drive circuitry (e.g., TPA6205A amplifier), supports direct or polled update methods, and delivers tactile feedback without blocking main firmware execution-TS2000 ISRs activate only during active effect playback, yielding zero CPU load when idle.

Key Specifications

Pinout & Package

Package: 24-pin QFN (4 × 4 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C20336H-24LTXI and CY8C22345H-24LTXI, the CY8C20236A-24LKXIT offers balanced resource use-lower flash than CY8C22345H and lower CPU load than CY8C20336H-making it optimal for cost-sensitive, battery-powered touch interfaces requiring deterministic haptics.

Availability

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

Supply support for CY8C20236A-24LKXIT 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, capacitive sensing, and human interface applications.

The CY8C20xx6A series targets ultra-low-power, small-form-factor capacitive touch systems where integrated haptics, CapSense, and minimal external components reduce bill-of-materials cost.

FAQ

What actuator drive circuit is required for CY8C20236A-24LKXIT?

The device requires an external amplifier such as the TPA6205A, powered at 3.3 V, with PWM output routed to the actuator's "–IN" pin and SHDN# controlled via a configurable GPIO. The Sanyo NRS-2574i (for ≤150 g devices) or Jinlong Z6DL2A017000B (for heavier units) must be used per Immersion's physical design guidelines.

How does CPU loading behave during haptic playback?

CY8C20236A-24LKXIT incurs CPU load only during active effect playback: Timer_PWM ISR (~90 cycles at 24 MHz) fires every PWM period, and Timer_TMR ISR triggers every 5 ms. When no effect is playing, CPU load is zero-main firmware executes uninterrupted with no background haptics overhead.

Can I change the PWM frequency, and what are the constraints?

Yes-PWM frequency is set via FClock parameter (5.6–13 MHz range), where FPWM = FClock / 255. To maintain >22 kHz output, FClock must exceed 5.6 MHz. Valid EffectUpdateDivider values (109–255) must be recalculated concurrently using EffectUpdateDivider = (FClock/(200 Hz × 255)) − 1 to preserve 5-ms timing accuracy.

Is the CY8C20236A-24LKXIT pin-compatible with other CY8C20xx6 devices?

Yes-it shares the same 24-pin QFN package and pinout with CY8C20336H and CY8C20446H, including identical VDD/VSS, XRES, I²C, and GPIO assignments. However, TS2000 configuration differs: CY8C20236A-24LKXIT exclusively uses two-timer firmware mode, unlike the digital-block-based variants.