Infineon Technologies CY8C20066A-24LTXI

Overview

CY8C20066A-24LTXI from Cypress Semiconductor is a PSoC® 1 mixed-signal array IC configured with the TS2000 Haptics User Module, delivering tactile feedback via PWM-driven ERM actuators. It integrates two 16-bit timers (Timer0 and Timer2) for concurrent 23 kHz PWM generation and 5 ms haptic effect timing, operates at up to 3.3 V, and supports up to 14 Immersion TouchSense 2000 haptic effects in embedded CapSense® touch interfaces.

For engineers reviewing the CY8C20066A-24LTXI datasheet, CY8C20066A-24LTXI pinout, CY8C20066A-24LTXI application, or CY8C20066A-24LTXI equivalent, this device serves as a firmware-based haptics controller requiring precise timer configuration, actuator-specific drive circuit interfacing (e.g., TPA6205A amplifier), and coordinated PWM/enable signal routing to external ERM drivers.

Technical Context

The CY8C20066A-24LTXI implements haptic feedback using two dedicated 16-bit timers: Timer_PWM generates ~23 kHz PWM output (FClock ÷ 255) with ≤90-cycle ISR duration, while Timer_TMR provides 5 ms update intervals (±10% tolerance) for effect sequencing. Both timers operate under IMO-synchronized 24 MHz CPU clocking.

It requires external analog components - specifically the TPA6205A amplifier and one of two validated actuators (Sanyo NRS-2574i for ≤150 g devices or Jinlong Z6DL2A017000B for heavier units) - and relies on firmware API calls (TS2000_PlayEffect) rather than hardware-accelerated waveform generation.

Key Specifications

Pinout & Package

This device is housed in a 24-pin QFN (4×4 mm) package with exposed thermal pad (LTXI suffix). Pin assignments are defined by user-configured PSoC routing; no fixed pinout exists independent of project-level port/pin mapping. Critical interface signals include PWM_Port/PWM_Pin (drives actuator IN−) and AmplifierEnable_Port/AmplifierEnable_Pin (controls TPA6205A SHDN#).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C20346H and CY8C22345H, the CY8C20066A-24LTXI trades hardware acceleration and analog integration for minimal resource footprint and deterministic timer-based timing-ideal for cost-sensitive, space-constrained designs where firmware-managed haptics suffices.

Availability

CY8C20066A-24LTXI is available at Aetrix Electronics and suitable for smartphone touch interfaces, wearable fitness trackers, industrial HMI panels, and medical diagnostic handhelds requiring stable component supply and long-term lifecycle support.

Supply support for CY8C20066A-24LTXI 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, combining configurable analog and digital blocks with industry-standard microcontroller cores.

The CY8C20xx6A series targets low-power, small-form-factor CapSense touch interfaces, with the CY8C20066A-24LTXI variant optimized specifically for firmware-efficient haptic feedback integration.

FAQ

What clock source is required for reliable TS2000 operation on CY8C20066A-24LTXI?

The device relies on the internal main oscillator (IMO) at 24 MHz as the recommended clock source. This ensures accurate 5 ms timing intervals and stable 23 kHz PWM generation. External crystals may be used but require careful validation against the FClock range (5.6–13 MHz) and effect update divider calculations specified in the TS2000 documentation.

Can CY8C20066A-24LTXI drive linear resonant actuators (LRAs)?

No. The TS2000 User Module implementation on this device is validated exclusively for eccentric rotating mass (ERM) actuators-specifically the Sanyo NRS-2574i and Jinlong Z6DL2A017000B. LRA drive requires different voltage profiles, resonance tracking, and AC drive waveforms not supported by the firmware-based TS2000 architecture.

How does disabling unused haptic effects impact memory usage?

Disabling effects reduces flash consumption by excluding their waveform data and processing logic from the compiled image. Worst-case flash usage is 15,922 bytes; actual usage scales downward with each disabled effect, as confirmed in the TS2000 resource table. RAM usage also decreases because fewer effect buffers and state variables are allocated at runtime.

Is external amplification mandatory for the PWM output?

Yes. The CY8C20066A-24LTXI GPIO cannot directly drive ERM actuators. A dedicated driver amplifier-specifically the TPA6205A-is required to convert the 3.3 V logic-level PWM signal into sufficient current (≥150 mA peak) and voltage swing to actuate the motor. Omitting this stage results in no perceptible haptic output.