Infineon Technologies CY8C24894-24LTXIT

Overview

CY8C24894-24LTXIT from Cypress Semiconductor is a programmable System-on-Chip (PSoC) integrating an M8C 8-bit Harvard-architecture CPU, six analog PSoC blocks (supporting up to 14-bit ADCs and 9-bit DACs), four digital PSoC blocks (including UART, SPI, PWM, CRC), full-speed USB 2.0 (12 Mbps) with dedicated 256-byte buffer, and operates from 3.0 V to 5.25 V across –40 °C to +85 °C industrial temperature range - deployed in capacitive touch sensing and embedded control systems.

For engineers reviewing the CY8C24894-24LTXIT datasheet, CY8C24894-24LTXIT pinout, CY8C24894-24LTXIT application, or CY8C24894-24LTXIT equivalent, key selection criteria include USB 2.0 compliance without external crystal, configurable analog/digital blocks for mixed-signal system integration, ISSP support via XRES, 16 KB flash/1 KB SRAM memory partitioning, and GPIO drive strength (25 mA sink / 10 mA source) for direct sensor/actuator interfacing.

Technical Context

The device implements a hardwired M8C core with deterministic 24 MHz execution, paired with globally routable interconnect enabling dynamic reconfiguration of analog and digital blocks at design time. Its USB subsystem uses an internal ±0.25% oscillator for USB timing compliance, eliminating need for external crystal or trim capacitor.

Analog resources include rail-to-rail input/output capability per block, decimator-based sigma-delta ADC architecture supporting 14-bit resolution at 100 SPS, and programmable gain amplifiers with gains up to 32×. Digital blocks support 8–32-bit counter/timer/PWM functions, full-duplex UART with automatic baud rate detection, and I²C master/slave operation up to 400 kHz.

Key Specifications

Pinout & Package

Package: 68-pin QFN (9 mm × 9 mm, 0.5 mm pitch), RoHS-compliant, thermally enhanced with 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 CY8C24794-24LTXIT, this part adds full-speed USB with crystal-free operation - critical for HID and CDC devices; versus CY8C24994-24LTXIT, it trades debug visibility for lower unit cost while retaining identical application functionality.

Availability

CY8C24894-24LTXIT is available at Aetrix Electronics and suitable for capacitive touch interfaces, USB HID peripherals, industrial sensor hubs, and embedded motor control applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance.

Supply support for CY8C24894-24LTXIT 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, human interface, and connectivity applications, with global R&D and manufacturing infrastructure.

This device belongs to the PSoC 1 family - engineered to replace multiple discrete analog/digital components with a single configurable chip for cost-sensitive, low-power, mixed-signal embedded systems.

FAQ

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

No. The device integrates an internal main oscillator (IMO) calibrated to ±0.25% accuracy specifically for USB 2.0 full-speed timing compliance. External crystal is optional and only needed if higher clock precision is required for non-USB functions such as precise PWM frequency generation or synchronous serial communication.

Can the analog blocks perform simultaneous ADC and DAC operations?

Yes. Each of the six analog blocks operates independently and can be configured in different modes. For example, Block 0 may run a 14-bit sigma-delta ADC while Block 1 simultaneously executes a 9-bit DAC with programmable output range - enabled by separate clock domains and dedicated decimator/CIC hardware per block.

What is the maximum sustained GPIO current per port?

The absolute maximum total sink current per port is 100 mA, and total source current is 40 mA. Individual pins support 25 mA sink or 10 mA source continuously. Exceeding these limits risks thermal shutdown or permanent damage; design must ensure aggregate port current remains within specified limits under worst-case operating conditions.

Is ISSP supported through standard SWD or JTAG interfaces?

No. In-system serial programming uses the dedicated XRES pin in conjunction with P1[0] and P1[1] as serial data lines, implementing Cypress's proprietary ISSP protocol. It does not use SWD or JTAG; programming requires Cypress MiniProg3 or compatible ISSP-capable programmers, not generic ARM debug probes.