CY8C24794-24LQXIT

Overview

The CY8C24794-24LQXIT is an 8-bit microcontroller from the PSoC 1 family, featuring the M8C processor core with speeds up to 24 MHz. It integrates 16 KB of Flash program storage and 1 KB of SRAM data memory. The device includes a full-speed USB interface compliant with USB 2.0, supporting four unidirectional and one bidirectional control endpoint with a dedicated 256-byte buffer. It provides six analog PSoC blocks for ADCs, DACs, and amplifiers, and four digital PSoC blocks for timers, counters, PWMs, and serial communication interfaces.

Feature Summary

• Configurable analog and digital system-on-chip architecture allowing custom peripheral creation
• Integrated full-speed USB controller requiring no external crystal
• Capacitive sensing application capability via CSA technology
• Flexible GPIO drive modes with configurable pull-up, pull-down, and interrupt capabilities

Applications

• USB-enabled human interface devices
• Capacitive touch sensing controllers
• Industrial control systems requiring programmable analog signal processing
• Battery-powered devices utilizing low-voltage detection and sleep modes

Procurement Notes

Verify the specific ordering suffix LQXIT corresponds to the required QFN package and tape-and-reel quantity. Confirm that the industrial temperature range (-40 °C to +85 °C) meets your environmental specifications. Ensure compatibility with the PSoC Designer IDE for firmware development. Check for any silicon errata relevant to the specific revision before finalizing the design.

Selection Notes

Select this component if your design requires a combination of USB connectivity and highly configurable analog peripherals within a single chip. The CY8C24794 offers sufficient I/O count and memory for moderate complexity applications. Consider the available user modules in PSoC Designer to ensure the necessary digital and analog functions can be implemented without resource conflicts.

Part Context

This part belongs to the CY8C24x94 series of PSoC 1 devices, which are designed to replace multiple traditional MCU-based components. The series features a Harvard-architecture M8C CPU and a flexible interconnect system. It is distinct from higher-density families like the CY8C29x66 or lower-end variants like the CY8C24x23A in terms of analog block count and I/O availability.

Replacement Considerations

Direct substitutes within the same datasheet include the CY8C24094, CY8C24894, and CY8C24994. Verify pinout compatibility and feature parity, such as the presence of the XRES pin in the CY8C24894 variant. Cross-family replacements require careful evaluation of clock sources, memory sizes, and peripheral configurations.