Infineon Technologies CY8C24493-24LTXI

Overview

CY8C24493-24LTXI from Infineon Technologies (formerly Cypress) is a PSoC® 1 programmable system-on-chip integrating an M8C CPU, configurable analog/digital peripherals, full-speed USB 2.0, and up to 36 GPIOs in a 48-pin QFN package. It operates from 1.71 V to 5.5 V, delivers 24 MHz performance, features 8 KB flash/1 KB SRAM, and supports –40 °C to +85 °C industrial temperature range - deployed in embedded control systems with integrated signal acquisition and USB connectivity.

For engineers reviewing the CY8C24493-24LTXI datasheet, CY8C24493-24LTXI pinout, CY8C24493-24LTXI application, or CY8C24493-24LTXI equivalent, key selection criteria include USB endpoint count (9 total), analog resource flexibility (10-bit ADC, dual comparators, IDAC), low-power sleep modes (0.1 μA deep sleep), and pin-configurable I/O drive strength (25 mA sink per GPIO).

Technical Context

The CY8C24493-24LTXI implements a Harvard-architecture M8C core with dedicated instruction and data buses, enabling deterministic real-time execution. Its analog subsystem includes a programmable analog mux, internal voltage references (0.8 V/1.0 V/1.2 V), and a 10-bit incremental ADC with internal reference - all routed via global analog interconnect independent of digital paths.

Digital resources include three 16-bit programmable timers, I²C slave (up to 400 kHz), SPI master/slave (up to 12 MHz), and a full-speed USB 2.0 interface with dedicated 512-byte SRAM and crystal-free operation. Clocking is managed by four sources: IMO (6/12/24 MHz), ILO (32 kHz), external 32 kHz crystal, and external clock input.

Key Specifications

Pinout & Package

Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad. RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable SoC applications.

Compared with CY8C24493-24LTXI, CY8C24893-24LTXI offers scalable memory without peripheral trade-offs, while CY8C24293-24LTXI removes USB to reduce unit cost - both maintain identical pinout, timing, and analog performance for seamless migration.

Availability

CY8C24493-24LTXI is available at Aetrix Electronics and suitable for industrial sensor nodes, USB human interface devices, smart home thermostats, and programmable power monitors requiring stable component supply across multi-year production cycles.

Supply support for CY8C24493-24LTXI 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

Infineon Technologies acquired Cypress Semiconductor in 2020 and now owns and supports the full PSoC® portfolio, including legacy PSoC 1 devices. Infineon is a global semiconductor leader focused on power systems, automotive, and industrial applications.

CY8C24493-24LTXI belongs to the PSoC® 1 family - Infineon's first-generation programmable SoC platform designed for cost-sensitive, mixed-signal embedded applications requiring configurable analog/digital resources and USB connectivity in compact packages.

FAQ

Does CY8C24493-24LTXI require an external crystal for USB operation?

No. The device integrates a USB PLL that locks to its internal main oscillator (IMO) running at 24 MHz, eliminating the need for an external 12 MHz crystal or associated load capacitors. This reduces bill-of-materials cost and simplifies PCB layout while maintaining full-speed USB 2.0 compliance.

What is the maximum sink current capability per GPIO on CY8C24493-24LTXI?

Each GPIO supports up to 25 mA sink current. The total sink current across all GPIOs is limited to 120 mA. Source current varies by port: 5 mA per pin on Ports 0 and 1, and 1 mA per pin on Ports 2, 3, and 4 - critical for driving LEDs, relays, or logic-level MOSFET gates directly.

Can CY8C24493-24LTXI operate from a single 3.3 V supply?

Yes. The device operates across 1.71 V to 5.5 V, making it fully compatible with standard 3.3 V systems. Its internal LDO regulates analog circuitry to 1.8 V, 2.5 V, or 3.0 V - selectable via configuration - ensuring stable analog performance regardless of input rail variation.

Is PSoC Designer still supported for CY8C24493-24LTXI development?

Yes. PSoC Designer v5.4 remains the official IDE for PSoC 1 devices, including CY8C24493-24LTXI. It provides drag-and-drop user module configuration, automatic API generation, and ISSP-based programming via MiniProg3. Infineon maintains legacy tool support and documentation at www.infineon.com/psoc1.