Infineon Technologies CY8C20436A-24LQXIT

Overview

CY8C20436A-24LQXIT 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 timers (Timer0 and Timer2) to generate a ~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 CY8C20436A-24LQXIT datasheet, CY8C20436A-24LQXIT pinout, CY8C20436A-24LQXIT application, or CY8C20436A-24LQXIT 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 firmware resource usage (15,922 bytes flash, 43–1803 bytes RAM).

Technical Context

The CY8C20436A-24LQXIT implements haptic feedback using firmware-managed dual-timer architecture: Timer_PWM generates ~23 kHz PWM output via ISR (~90 clock cycles at 24 MHz IMO), while Timer_TMR triggers haptic effect updates every 5 ms. Both timers are dedicated and non-reconfigurable when TS2000 is active.

No hardware digital blocks are consumed-unlike CY8C22x45H variants-making it suitable for resource-constrained PSoC 1 designs where digital block count is limited. The module requires external actuator drive circuitry (e.g., TPA6205A) and amplifier enable control (SHDN#) routed to configurable GPIO pins.

Key Specifications

Pinout & Package

Package: 24-pin QFN (4 mm × 4 mm, 0.5 mm pitch), RoHS-compliant, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C20436A-24LQXIT, CY8C22345H eliminates all CPU ISR load at the expense of digital block allocation and package size, while CY8C20336H trades effect count and waveform fidelity for lower flash and simpler timer usage-neither offers identical 14-effect capability with dual-timer determinism in 24-QFN.

Availability

CY8C20436A-24LQXIT is available at Aetrix Electronics and suitable for smartphone touch UIs, wearable fitness trackers, industrial HMI panels, and medical handheld scanners requiring stable component supply and long-term lifecycle support.

Supply support for CY8C20436A-24LQXIT 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 sensing, control, and human interface applications.

The CY8C20xx6A/H series delivers CapSense®-enabled PSoC 1 solutions optimized for low-power, small-footprint capacitive touch systems with integrated haptics, timing, and analog front-end functions.

FAQ

What is the minimum required IMO clock speed for stable TS2000 operation on CY8C20436A-24LQXIT?

The device requires a 24 MHz IMO clock for guaranteed TS2000 timing compliance. At this frequency, Timer_PWM ISR duration is ~90 clock cycles (3.75 µs), and EffectUpdateDivider = 117 yields exact 5-ms intervals within ±10% error. Lower IMO speeds risk violating the 22 kHz PWM minimum or 5-ms update window.

Can CY8C20436A-24LQXIT drive an ERM actuator directly without an external amplifier?

No. The IC outputs only a logic-level PWM signal (3.3 V, <10 mA) and requires an external driver such as the TPA6205A. Direct ERM connection would exceed GPIO current limits and fail to deliver required torque-Immersion specifies ≥100 mA peak drive for NRS-2574i and Z6DL2A017000B actuators.

How does disabling unused haptic effects impact memory usage?

Each disabled effect reduces flash usage by ~350–600 bytes depending on waveform complexity and compiler settings. With all 14 effects enabled, flash consumption is 15,922 bytes; disabling 7 effects typically lowers usage to ~12,200 bytes. RAM reduction is minimal (<50 bytes), as only active effect buffers consume dynamic memory.

Is the CY8C20436A-24LQXIT pin-compatible with other CY8C20xx6x variants?

Yes-CY8C20436A-24LQXIT shares identical 24-QFN pinout and GPIO mapping with CY8C20336H, CY8C20346H, and CY8C20446H. However, firmware must be recompiled for TS2000-specific timer resource allocation, as CY8C20336H uses only one timer and lacks full 14-effect support.