Infineon Technologies CY8C24094-24LTXI

Overview

CY8C24094-24LTXI from Cypress Semiconductor is a programmable System-on-Chip (PSoC) integrating an M8C 24 MHz Harvard-architecture CPU, 16 KB flash, 1 KB SRAM, six analog PSoC blocks (supporting up to 14-bit ADCs and 9-bit DACs), four digital PSoC blocks (including UART, SPI, PWM, CRC), and full-speed USB 2.0 (12 Mbps) with dedicated 256-byte buffer - deployed in industrial human-machine interface (HMI) and capacitive touch sensing systems.

For engineers reviewing the CY8C24094-24LTXI datasheet, CY8C24094-24LTXI pinout, CY8C24094-24LTXI application, or CY8C24094-24LTXI equivalent, key selection criteria include USB endpoint count (4 unidirectional + 1 bidirectional), analog input capability (up to 48 GPIOs), precision internal oscillator (±4% main, 0.25% USB-calibrated), GPIO drive strength (25 mA sink / 10 mA source), and ISSP support via XRES pin.

Technical Context

The CY8C24094-24LTXI implements a configurable mixed-signal architecture where analog and digital PSoC blocks interconnect via global analog/digital buses, enabling custom peripheral synthesis - e.g., combining analog blocks for CSA (Capacitive Sensing Application) with digital blocks for debounce and reporting logic. Its M8C core executes instructions at up to 24 MHz with two 8×8 multipliers and 32-bit accumulator support.

USB functionality operates independently of external crystals due to an internal oscillator trimmed to ±0.25% accuracy for USB timing compliance; system clocking includes dual oscillators - IMO (24/48 MHz) and ILO (for watchdog/sleep) - with user-configurable LVD and POR reset sources feeding a centralized interrupt controller.

Key Specifications

Pinout & Package

Package: 56-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C24894 and CY8C24794, the CY8C24094-24LTXI offers identical mixed-signal capability in a space-constrained 56-pin QFN, but omits XRES - making it optimal for cost-sensitive, factory-programmed touch controllers where compactness outweighs field update flexibility.

Availability

CY8C24094-24LTXI is available at Aetrix Electronics and suitable for industrial HMI, USB HID devices, capacitive liquid level sensing, and smart appliance control interfaces requiring stable component supply and long-term production continuity.

Supply support for CY8C24094-24LTXI 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, capacitive sensing, and USB connectivity - headquartered in San Jose, CA, with global manufacturing and support infrastructure.

The CY8C24x94 product line targets cost-optimized, single-chip solutions for capacitive touch HMI and USB-peripheral applications - emphasizing integrated analog front-ends, field-upgradable flash, and crystal-free USB timing.

FAQ

Does CY8C24094-24LTXI support USB without an external crystal?

Yes. The device integrates an internal main oscillator (IMO) trimmed to ±0.25% accuracy specifically for USB 2.0 full-speed (12 Mbps) operation, eliminating the need for external crystals or load capacitors. This is confirmed in the "Precision, programmable clocking" section of the datasheet (Rev. AL, page 1).

How many analog inputs can be used simultaneously on CY8C24094-24LTXI?

Up to 48 GPIO pins support analog input functions, and the six analog PSoC blocks allow concurrent configuration of multiple analog resources - including ADCs, PGAs, and comparators - with shared access to these pins via programmable analog muxing (Document Number 38-12018 Rev. AL, page 5).

Is in-system serial programming (ISSP) supported on CY8C24094-24LTXI?

No. Unlike CY8C24894, the CY8C24094 variant does not include the XRES pin required for ISSP. Programming must be performed via alternative methods such as SWD or pre-programming before assembly - as stated in the "Features" section (Rev. AL, page 1).

What is the maximum operating temperature range for industrial use?

The CY8C24094-24LTXI is rated for industrial temperature operation from –40 °C to +85 °C, verified across DC and AC electrical specifications - consistent with the "Operating Temperature" table in Section 22 of the datasheet (Rev. AL, page 23).