Infineon Technologies CY8C20646A-24LQXI

Overview

CY8C20646A-24LQXI 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 14 Immersion TouchSense 2000 haptic effects for CapSense® button systems in handheld consumer electronics.

For engineers reviewing the CY8C20646A-24LQXI datasheet, CY8C20646A-24LQXI pinout, CY8C20646A-24LQXI application, or CY8C20646A-24LQXI equivalent, key selection criteria include supported actuator drive timing (5 ms update), firmware-based PWM generation, flash usage (15,922 bytes), RAM range (43–1803 bytes), and required I/O pin assignment for PWM and amplifier enable signals.

Technical Context

The CY8C20646A-24LQXI implements haptic feedback using two dedicated 16-bit timers: Timer_PWM generates ~23 kHz PWM output (FClock/255, FClock = 5.6–13 MHz), while Timer_TMR provides precise 5 ms intervals for effect sequencing. Both ISRs execute in firmware without blocking main code flow.

It requires external actuator drive circuitry (e.g., TPA6205A amplifier) and supports two validated actuators: Sanyo NRS-2574i (≤150 g devices) and Jinlong Z6DL2A017000B (>150 g). Effect playback is initiated via TS2000_1_PlayEffect() API with preloaded byte-encoded effect data.

Key Specifications

Pinout & Package

Package: 24-pin QFN (4 × 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 CY8C20346H and CY8C22345H, CY8C20646A-24LQXI delivers optimized haptic timing with minimal CPU impact and zero digital block usage-making it ideal for cost-sensitive, resource-constrained CapSense systems requiring certified TouchSense effects.

Availability

CY8C20646A-24LQXI is available at Aetrix Electronics and suitable for smartphone touch UI feedback, wearable device button confirmation, and industrial handheld scanner UI requiring stable component supply and long-term production continuity.

Supply support for CY8C20646A-24LQXI 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, sensing, and connectivity applications with emphasis on system-level integration and developer productivity.

The CY8C20xx6A series belongs to the PSoC® 1 family, engineered specifically for low-power, capacitive-sensing–centric human interface applications where analog/digital flexibility and rapid firmware-based peripheral configuration are essential.

FAQ

What actuator drivers are compatible with CY8C20646A-24LQXI?

The device is characterized and validated with the TPA6205A audio amplifier used as an actuator driver. It requires a 3.3 V supply and accepts active-low SHDN# control and differential PWM input. Other Class-D or linear drivers meeting the same voltage, timing, and interface requirements may be substituted after validation against Immersion's haptic performance guidelines.

Can CY8C20646A-24LQXI operate from a 2.7 V supply?

No. The TS2000 Haptics User Module specification mandates a 3.3 V ±5% supply (3.14–3.47 V) per Immersion's operating range requirements. Operation below 3.14 V risks incorrect PWM timing, reduced actuator amplitude, and failure to meet TouchSense 2000 effect fidelity thresholds.

How is haptic effect data loaded into CY8C20646A-24LQXI?

Effect data is compiled into flash memory during PSoC Designer build. Each enabled effect occupies preallocated space in the TS2000 module's effect table. Playback is triggered by calling TS2000_1_PlayEffect() with a pointer to the corresponding effect's byte array stored in flash-not loaded dynamically at runtime.

Does CY8C20646A-24LQXI support I²C communication for effect control?

No. The IC itself does not implement I²C slave functionality for haptic control. I²C pins (P1[0]/P1[1]) are reserved for system-level communication; haptic commands are issued via direct API calls from firmware running on the same PSoC die. External controllers must use GPIO or UART to interface with the host application layer.