Infineon Technologies CY8C24423A-24LTXIT

Overview

CY8C24423A-24LTXIT from Cypress Semiconductor is a programmable 8-bit Harvard-architecture PSoC® SoC featuring an M8C CPU core running at up to 24 MHz, 4 KB flash, 256 bytes SRAM, six analog PSoC blocks (supporting up to 14-bit ADCs and 9-bit DACs), and four digital PSoC blocks (including UART, SPI, I²C, PWM, and timers). It operates from 2.4 V to 5.25 V across –40 °C to +85 °C and targets embedded sensor interface and mixed-signal control applications.

For engineers reviewing the CY8C24423A-24LTXIT datasheet, CY8C24423A-24LTXIT pinout, CY8C24423A-24LTXIT application, or CY8C24423A-24LTXIT equivalent, key selection criteria include its 28-pin SOIC package, 24 MHz internal oscillator accuracy (±5%), on-chip switch-mode pump enabling 1.0 V operation, configurable GPIO drive modes (25 mA sink), and integrated analog resources for self-contained signal conditioning.

Technical Context

The CY8C24423A-24LTXIT implements a fixed-function M8C CPU core with Harvard architecture, supporting 8×8 multiply and 32-bit accumulate operations. Its clock system integrates a ±5% 24 MHz internal main oscillator (IMO), a 32 kHz internal low-speed oscillator (ILO), and optional external crystal (ECO) with PLL for 24 MHz crystal-accurate timing.

Digital peripherals are built from four 8-bit digital PSoC blocks, combinable into 8–32-bit functions including full-duplex UART, SPI master/slave, I²C multi-master (up to 400 kHz), CRC/PRS modules, and PWM with dead-band. Analog functionality is delivered via six rail-to-rail analog PSoC blocks supporting PGA, comparator, filter, ADC (up to 14-bit), and DAC (up to 9-bit) configurations routed through global analog interconnect.

Key Specifications

Pinout & Package

Package: 28-pin SOIC (Small Outline Integrated Circuit), 300 mil width, RoHS-compliant, JEDEC MS-012AC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C24223A-24LTXIT and CY8C24423A-24PVXI, the CY8C24423A-24LTXIT delivers full analog resource allocation and RoHS-compliant SOIC packaging-critical for production-grade industrial sensor nodes requiring thermal reliability and bus flexibility.

Availability

CY8C24423A-24LTXIT is available at Aetrix Electronics and suitable for industrial sensor nodes, capacitive touch HMIs, motor control subsystems, and smart power metering requiring stable component supply and long-term lifecycle assurance.

Supply support for CY8C24423A-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, offering PSoC architecture since 2002 with focus on configurability and system integration.

The CY8C24x23A product line targets cost-sensitive, low-power embedded applications requiring both analog signal conditioning and digital control in a single chip-optimized for sensor interfacing, HMI, and electro-mechanical actuation.

FAQ

Does CY8C24423A-24LTXIT support USB connectivity?

No. The CY8C24423A-24LTXIT does not include a USB physical layer or USB protocol stack hardware. It supports UART, SPI, and I²C for host communication. USB connectivity requires external transceivers and firmware-level protocol handling, which is outside its native peripheral set.

Can the internal 24 MHz oscillator be used for precise timing-critical applications?

The internal 24 MHz IMO has ±5% accuracy over temperature and voltage. For timing-critical applications like UART baud rate generation or real-time clocks, Cypress recommends using the optional 32.768 kHz crystal with PLL to derive a crystal-accurate 24 MHz clock, achieving ±20 ppm stability.

What is the maximum sampling rate achievable with the 14-bit ADC?

The 14-bit ADC achieves up to 10 kSPS in high-resolution mode. At lower resolutions (e.g., 10-bit), it reaches 100 kSPS. Sampling rate depends on configuration: decimator settings, reference source (internal 1.2 V or external), and analog block clock division-all programmable in PSoC Designer.

Is EEPROM emulation supported, and how many write/erase cycles does it provide?

Yes. The device emulates up to 2 KB of EEPROM using flash memory with wear-leveling algorithms implemented in PSoC Designer's EEPROM user module. Endurance is rated at 100,000 cycles per emulated byte, verified under typical operating conditions (25 °C, VDD = 3.3 V).