Infineon Technologies CY8C24693-24LQXI

Overview

CY8C24693-24LQXI from Infineon Technologies (formerly Cypress) is a PSoC® 1 programmable system-on-chip integrating an M8C CPU core, configurable analog/digital peripherals, full-speed USB 2.0 interface, and up to 36 GPIOs in a 48-pin QFN package. It operates from 1.71 V to 5.5 V, supports –40 °C to +85 °C industrial temperature range, and delivers 24 MHz CPU performance with 32 KB flash and 2 KB SRAM - used in embedded human-interface and sensor-fusion applications requiring integrated USB connectivity and mixed-signal flexibility.

For engineers reviewing the CY8C24693-24LQXI datasheet, CY8C24693-24LQXI pinout, CY8C24693-24LQXI application, or CY8C24693-24LQXI equivalent, key selection criteria include USB endpoint count (9 total), GPIO count (36), flash endurance (50,000 erase/write cycles), low-power sleep modes (0.1 μA deep sleep), and analog subsystem features including dual comparators with selectable reference voltages (0.8 V/1.0 V/1.2 V).

Technical Context

The CY8C24693-24LQXI implements a Harvard-architecture M8C CPU with on-chip 32 KB flash and 2 KB SRAM, supporting read-while-write and EEPROM emulation. Its analog system includes a 10-bit ADC with internal voltage reference, two low-power comparators (10 µA typical), and an 8-bit IDAC (512 µA full-scale), all routed via a global analog interconnect.

System resources include three 16-bit programmable timers, I²C slave (up to 400 kHz), SPI master/slave (up to 12 MHz), watchdog/sleep timers, and a dedicated 512-byte USB SRAM buffer. Clocking is managed by four sources: 6/12/24 MHz IMO, 32 kHz ILO, external 32 kHz crystal, and external clock input - enabling precise timing control without external crystals for USB operation.

Key Specifications

Pinout & Package

Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad. Pinout validated per Cypress document 001-86894 Rev. *D, Page 14 ("48-pin QFN (36 GPIOs (With USB))").

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C24493-24LQXI and CY8C24793-24LQXI, the CY8C24693-24LQXI uniquely balances USB integration, 32 KB flash for robust firmware, and 36 GPIOs - making it optimal for feature-rich, field-upgradable USB HMI devices without external support ICs.

Availability

CY8C24693-24LQXI is available at Aetrix Electronics and suitable for capacitive touch HMI, USB HID peripherals, and industrial sensor nodes requiring stable component supply, long-term lifecycle support, and qualified automotive-adjacent operating conditions.

Supply support for CY8C24693-24LQXI 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 maintains the PSoC® portfolio as part of its embedded control solutions, delivering high-reliability silicon for industrial, automotive, and IoT applications.

The CY8C24693 belongs to the PSoC® 1 family - designed for cost-sensitive, mixed-signal embedded applications requiring configurable analog/digital blocks, USB connectivity, and ultra-low-power operation without external components.

FAQ

Does CY8C24693-24LQXI require an external crystal for USB operation?

No. The device uses its internal main oscillator (IMO) with USB clock recovery to achieve full-speed USB 2.0 compliance without an external crystal. An external 32 kHz crystal is optional and only needed for high-precision sleep timer accuracy - not for USB functionality.

What development tools support CY8C24693-24LQXI firmware creation?

PSoC Designer™ IDE (free Windows-based tool) is the official development environment. It provides drag-and-drop user module configuration, automatic API generation, and ISSP programming support via MiniProg1/MiniProg3 programmers. Debugging requires CY3215A-DK or CY3210-PSOCEVAL1 evaluation kits.

Can CY8C24693-24LQXI operate reliably at 5.5 V supply?

Yes. The device is fully specified for DC operation up to 5.5 V across the full industrial temperature range (–40 °C to +85 °C). All GPIOs support 5.5 V-tolerant digital inputs, and the internal LDO regulates analog circuitry independently - ensuring stable ADC and comparator performance at maximum VDD.

How many USB endpoints does CY8C24693-24LQXI support, and what types are available?

The device supports nine total USB endpoints: eight unidirectional (IN or OUT) and one bidirectional (control endpoint). This configuration satisfies standard USB HID, CDC ACM, and vendor-specific class requirements - with dedicated 512-byte SRAM allocated for endpoint buffering and no external RAM required.