Infineon Technologies CY8C20246A-24LKXIT

Overview

CY8C20246A-24LKXIT 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 implements firmware-based 23 kHz PWM and 5 ms haptic update timing using two dedicated 16-bit timers (Timer0 and Timer2), 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 CY8C20246A-24LKXIT datasheet, CY8C20246A-24LKXIT pinout, CY8C20246A-24LKXIT application, or CY8C20246A-24LKXIT equivalent, key selection criteria include timer resource allocation, PWM output frequency stability (>22 kHz), actuator drive signal routing (PWM_Port/PWM_Pin and AmplifierEnable_Port/AmplifierEnable_Pin), flash/RAM usage trade-offs per enabled effect, and compatibility with Sanyo NRS-2574i or Jinlong Z6DL2A017000B actuators.

Technical Context

The CY8C20246A-24LKXIT implements haptic feedback via firmware-driven dual-timer operation: Timer_PWM generates ~23 kHz PWM output (90-cycle ISR duration), while Timer_TMR triggers haptic effect updates every 5 ms ±10%. Both timers require IMO clocking at 24 MHz for optimal timing accuracy and minimal ISR conflict.

It integrates with CapSense® button subsystems to improve touch detection accuracy through synchronized tactile response, uses no analog blocks or CT blocks, and relies on external actuator drive circuitry (e.g., TPA6205A) powered at 3.3 V with SHDN# control and –IN PWM input.

Key Specifications

Pinout & Package

Package: 24-pin QFN (4 mm × 4 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C20346H and CY8C22345H, the CY8C20246A-24LKXIT trades higher CPU ISR load for minimal digital resource consumption and QFN-24 compactness - making it optimal for space-constrained, cost-sensitive consumer devices where firmware timing control suffices.

Availability

CY8C20246A-24LKXIT 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 design-in support.

Supply support for CY8C20246A-24LKXIT 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 focus on low-power, high-integration solutions.

The CY8C20xx6A series targets cost-optimized CapSense+Haptics integration in consumer and industrial UIs, delivering configurable analog/digital resources with factory-trimmed precision and field-proven haptics firmware libraries.

FAQ

What clock source is required for reliable TS2000 operation on CY8C20246A-24LKXIT?

The IMO (Internal Main Oscillator) at 24 MHz is strongly recommended and validated for TS2000 timing. Using VC1 = 4 yields FClock = 6 MHz, satisfying the 5.6–13 MHz PWM input clock range and enabling correct EffectUpdateDivider calculation (e.g., 117). External crystals are supported but add complexity and are unnecessary for haptics timing accuracy.

Can CY8C20246A-24LKXIT drive an ERM actuator directly without an external amplifier?

No. The device outputs only a 3.3 V logic-level PWM signal and SHDN# control - insufficient to drive ERM coils. An external driver IC such as TPA6205A is mandatory to provide current gain, voltage boosting, and thermal protection. The TS2000 documentation specifies 3.3 V supply for this amplifier and defines exact connection points (–IN, SHDN#).

How does disabling unused haptic effects impact memory usage?

Each disabled effect reduces flash usage by approximately 500–1,200 bytes depending on effect complexity and compiler optimization. Worst-case flash is 15,922 bytes with all 14 effects enabled; disabling half typically saves ~6,000 bytes. RAM usage also drops linearly - from 1803 bytes (all effects) to ~43 bytes (none enabled) - because effect buffers and state machines are omitted.

Is the CY8C20246A-24LKXIT pin-compatible with other CY8C20xx6x variants?

Yes, all CY8C20xx6A/H devices in the 24-pin QFN package share identical pinouts and electrical characteristics. However, firmware configuration differs: CY8C20246A-24LKXIT uses the "2-Timer" TS2000 configuration exclusively, while CY8C20346H uses digital-block-based PWM. Swapping requires recompiling and revalidating the TS2000 user module settings in PSoC Designer.