Infineon Technologies CY8C24894-24LFXI

Overview

CY8C24894-24LFXI from Cypress Semiconductor is a programmable system-on-chip (PSoC) integrating an M8C 8-bit Harvard architecture CPU, 16 KB Flash, 1 KB SRAM, 4 digital PSoC blocks, 6 analog PSoC blocks, full-speed USB 2.0 (12 Mbps), and configurable I/O with up to 48 analog inputs - used in embedded human interface and sensor fusion systems requiring on-chip analog signal conditioning and USB connectivity.

For engineers reviewing the CY8C24894-24LFXI datasheet, CY8C24894-24LFXI pinout, CY8C24894-24LFXI application, or CY8C24894-24LFXI equivalent, key selection criteria include USB timing accuracy (±0.25% IMO self-tuning), analog block count (6), digital block count (4), 24 MHz CPU speed, and industrial temperature range (-40°C to +85°C).

Technical Context

The CY8C24894-24LFXI implements a fully integrated mixed-signal SoC architecture with separate digital and analog subsystems interconnected via global buses. Its M8C core runs at up to 24 MHz with 4 MIPS throughput, supported by dual internal oscillators: a 24/48 MHz IMO (±8% base, ±0.25% USB-tuned) and a 32 kHz ILO for low-power sleep/wake functions.

Analog resources include six configurable blocks supporting up to two 14-bit ADCs, two 9-bit DACs, programmable gain amplifiers (up to 93×), filters, and comparators - all accessible through a flexible analog mux bus connecting up to 48 GPIO pins across Ports 0–5. Digital peripherals include UART, SPI, I²C (400 kHz), PWMs (8–32 bit), timers, CRC/PRS, and a dedicated full-speed USB controller with five endpoints and 256-byte buffer.

Key Specifications

Pinout & Package

LQFP-64 package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad; 56 GPIO pins distributed across Ports 0–7, including dedicated USB D+ and D− pins (P0[6], P0[7]), XRES reset input, and VDD/VSS power rails.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C24794-24LFXI, CY8C24894-24LFXI adds critical XRES functionality for in-system programming and robust reset control; versus CY8C24994-24LFXI, it trades memory headroom for cost-sensitive designs where 16 KB Flash and 1 KB SRAM are sufficient.

Availability

CY8C24894-24LFXI is available at Aetrix Electronics and suitable for capacitive touch interfaces, USB HID devices, programmable sensor signal conditioning, and industrial fieldbus node controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY8C24894-24LFXI 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) is a fabless semiconductor company specializing in programmable mixed-signal, analog, and RF solutions for embedded systems.

The PSoC® family - including CY8C24894-24LFXI - was designed to replace discrete analog/digital components and traditional MCUs with a single configurable SoC targeting human interface, sensor processing, and USB-connected embedded applications.

FAQ

Does CY8C24894-24LFXI require an external crystal for USB operation?

No. The device uses an internal main oscillator (IMO) that self-tunes to ±0.25% accuracy specifically for USB 2.0 full-speed communication. Only two 27 Ω series resistors on the D+ and D− lines are required - no crystal, capacitor, or external clock source is needed for USB functionality.

What development tools are required to program CY8C24894-24LFXI?

PSoC Designer IDE (v5.4 or later) is the official Windows-based toolchain for configuring analog/digital blocks, generating firmware, and programming the device via ISSP. It supports C and assembly languages, includes pre-built user modules for CapSense, USB HID, ADC, and PWM, and integrates with third-party C compilers.

Can CY8C24894-24LFXI operate reliably at 5.25 V and 85°C?

Yes. The device is rated for 3.0 V to 5.25 V supply voltage and industrial temperature range (-40°C to +85°C). Electrical specifications including I/O drive strength (25 mA sink), analog block performance, and USB timing accuracy are guaranteed across this full range per the Rev. *O datasheet.

How many analog-to-digital converter channels can be active simultaneously?

Up to two independent ADCs can operate concurrently - each configured with selectable resolution (6–14 bit), conversion method (SAR, Delta-Sigma, or incremental), and input source from the 48-pin analog mux bus. Simultaneous sampling requires separate analog block allocation and proper clock domain synchronization in firmware.