Infineon Technologies CY8C20546A-24PVXIT

Overview

CY8C20546A-24PVXIT 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 Timer resources (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 ERM actuators in handheld consumer devices.

For engineers reviewing the CY8C20546A-24PVXIT datasheet, CY8C20546A-24PVXIT pinout, CY8C20546A-24PVXIT application, or CY8C20546A-24PVXIT equivalent, key selection criteria include PWM frequency stability (≥22 kHz), 5-ms effect update timing tolerance (±10%), flash memory usage (15,922 bytes max), RAM range (43–1803 bytes), and dual-timer resource allocation for concurrent haptic playback and host firmware execution.

Technical Context

The CY8C20546A-24PVXIT implements haptic feedback using firmware-driven PWM generation and timer-based scheduling: Timer_PWM ISR (≈90 clock cycles @24 MHz IMO) produces ~23 kHz PWM output, while Timer_TMR ISR triggers every 5 ms for effect state updates. Both timers are dedicated and non-reconfigurable in this configuration.

It requires external actuator drive circuitry (e.g., TPA6205A amplifier) and supports two ERM models - Sanyo NRS-2574i (≤150 g devices) and Jinlong Z6DL2A017000B (>150 g devices) - with fixed 3.3 V supply and SHDN# control signaling via configurable GPIO pins.

Key Specifications

Pinout & Package

Package: 24-pin SSOP (24PVXIT suffix denotes 24-lead plastic shrink small-outline package, 0.300" body width, 0.025" pitch).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C20546A-24PVXIT, CY8C20646A adds CapSense hardware at cost of increased resource usage and design complexity, while MAX11835 provides turnkey haptics with analog intelligence but removes programmable waveform flexibility and MCU-level control.

Availability

CY8C20546A-24PVXIT is available at Aetrix Electronics and suitable for smartphone touch UI feedback, wearable fitness tracker buttons, and industrial handheld scanner interface requiring stable component supply and long-term PSoC 1 platform continuity.

Supply support for CY8C20546A-24PVXIT 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.

CY8C20546A belongs to the PSoC 1 CY8C20xx6A family, engineered for cost-sensitive, low-power capacitive touch and haptics applications in consumer and industrial human-interface devices.

FAQ

What clock source does CY8C20546A-24PVXIT use for TS2000 haptics timing?

The device defaults to the Internal Main Oscillator (IMO) at 24 MHz for TS2000 timer operation. Timer_PWM and Timer_TMR derive their timing from this source; using VC1 dividers is supported but requires recalculating EffectUpdateDivider to maintain 5-ms update accuracy within ±10% tolerance.

Can CY8C20546A-24PVXIT drive linear resonant actuators (LRAs)?

No. The TS2000 User Module and CY8C20546A-24PVXIT hardware are validated exclusively for eccentric rotating mass (ERM) actuators-specifically Sanyo NRS-2574i and Jinlong Z6DL2A017000B. LRA drive requires resonant frequency tracking and AC voltage biasing not supported by this implementation.

How many GPIO pins are required for basic TS2000 operation?

Two dedicated GPIOs are mandatory: one for PWM output (e.g., P0[3]) connected to the actuator driver's IN signal, and one for amplifier enable (e.g., P0[4]) connected to SHDN#. Additional pins may be used for CapSense or system I/O but are not required for haptics functionality.

Is the TS2000 effect library customizable beyond the 14 built-in waveforms?

No. The 14 effects (e.g., Strong Click, Sharp Click 60%) are fixed, precompiled waveforms from the Immersion TouchSense 2000 library. Custom waveform generation is not supported-the API only accepts pointers to these predefined effect data structures stored in flash.