Infineon Technologies CY8C20466A-24LQXIT

Overview

CY8C20466A-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 23 kHz PWM output and 5 ms haptic update intervals, operates at up to 3.3 V, and supports up to 14 Immersion TouchSense 2000 haptic effects for CapSense® button confirmation in portable consumer interfaces.

For engineers reviewing the CY8C20466A-24LQXIT datasheet, CY8C20466A-24LQXIT pinout, CY8C20466A-24LQXIT application, or CY8C20466A-24LQXIT equivalent, this device delivers firmware-driven haptic timing and PWM control without blocking CPU execution during effect playback - critical for real-time touch interface responsiveness in space-constrained embedded designs.

Technical Context

The CY8C20466A-24LQXIT implements haptic feedback using two dedicated 16-bit timer resources: 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 ±10%. Both timers operate in firmware mode, requiring no digital block allocation.

It supports direct or polled update methods, accepts FClock between 5.6–13 MHz for valid PWM output (>22 kHz), and uses EffectUpdateDivider values from 109–255 to maintain 200 Hz update rate. Flash usage ranges 15,922 bytes; RAM consumption varies 43–1803 bytes depending on enabled effects.

Key Specifications

Pinout & Package

This device is housed in a 24-pin QFN (4×4 mm, 0.5 mm pitch) package designated LQFP-24 in Cypress documentation but physically implemented as QFN-24 per package drawing 001-64564 Rev. *D. Pin functions are defined by PSoC Designer configuration; no fixed hardware pinout exists independent of user module placement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C20336H and CY8C22345H, the CY8C20466A-24LQXIT offers balanced resource efficiency: it avoids digital block consumption like the former while delivering deterministic timing without the hardware overhead of the latter - ideal for cost-sensitive, space-constrained haptics implementations.

Availability

CY8C20466A-24LQXIT is available at Aetrix Electronics and suitable for smartphone touch interfaces, wearable fitness trackers, industrial handheld scanners, and medical patient monitor touch panels requiring stable component supply and long-term lifecycle support.

Supply support for CY8C20466A-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 control, sensor interfacing, and human-machine interaction applications.

The CY8C20xx6A series belongs to Cypress' PSoC 1 family, engineered specifically for low-cost, low-power capacitive sensing and integrated haptics in consumer and industrial UIs - combining CapSense® and TS2000 functionality in a single chip.

FAQ

What is the minimum clock frequency required for valid TS2000 operation on CY8C20466A-24LQXIT?

The minimum input clock frequency is 5.6 MHz, ensuring the resulting PWM output exceeds 22 kHz (FPWM = FClock / 255). At 5.6 MHz, FPWM = 21.96 kHz - just below threshold; thus 5.7 MHz (22.35 kHz) is the practical minimum. This requirement is enforced by the TS2000 configuration wizard in PSoC Designer.

Can CY8C20466A-24LQXIT drive an ERM actuator directly without an external amplifier?

No. The device outputs only a logic-level PWM signal and amplifier enable control. An external driver IC such as the TPA6205A is required to deliver sufficient current (≥150 mA) and voltage swing to the actuator coil. The TS2000 design assumes this external stage, as confirmed by the reference schematic in Document 001-64564.

How does disabling unused haptic effects impact memory usage?

Disabling effects reduces flash usage by omitting their waveform data and processing logic. With all 14 effects enabled, flash usage is 15,922 bytes; disabling half reduces flash by ~1.2–1.8 kB. RAM usage also drops proportionally, as fewer effect buffers and state variables are allocated - verified in PSoC Designer build reports.

Is the 5-ms haptic update interval adjustable to other values?

No - the 5-ms interval is fixed by Immersion TouchSense 2000 specification and implemented via EffectUpdateDivider calculation (EffectUpdateDivider = (FClock/(200 Hz × 255)) − 1). Deviating from 200 Hz disrupts effect timing fidelity and is unsupported by the TS2000 API and waveform library.