Infineon Technologies CY8C24423A-24LTXI

Overview

CY8C24423A-24LTXI from Cypress Semiconductor is a programmable 8-bit Harvard-architecture PSoC® SoC featuring an M8C CPU 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 control with mixed-signal integration.

For engineers reviewing the CY8C24423A-24LTXI datasheet, CY8C24423A-24LTXI pinout, CY8C24423A-24LTXI application, or CY8C24423A-24LTXI equivalent, key selection criteria include its 28-pin SOIC package, on-chip switch-mode pump enabling 1.0 V operation, configurable GPIO drive modes (25 mA sink), and integrated precision voltage reference for sensor interface and low-power industrial monitoring.

Technical Context

The device integrates a 24 MHz internal main oscillator (±5% over temperature/voltage) with optional PLL-based 24 MHz clock accuracy using a 32.768 kHz crystal, supporting precise timing for real-time control loops. Its analog system comprises six rail-to-rail configurable blocks enabling simultaneous ADC, PGA, comparator, and filter functions routed via global analog interconnect.

Digital resources include four 8-bit PSoC blocks combinable into 8–32-bit peripherals - such as full-duplex UART, multi-master I²C (400 kHz), and PWM with dead-band - all connectable to any GPIO through global digital interconnect and interrupt-capable pins.

Key Specifications

Pinout & Package

CY8C24423A-24LTXI is housed in a 28-pin SOIC (Small Outline Integrated Circuit) package with 300 mil body width, JEDEC MS-012AC compliant, and lead-free (Pb-free) finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C24223A-24LTXI and CY8C24423-24LTXI, the CY8C24423A-24LTXI delivers full analog resource allocation and industrial temperature certification - essential for designs needing concurrent high-resolution sensing and robust operation across wide ambient conditions.

Availability

CY8C24423A-24LTXI is available at Aetrix Electronics and suitable for industrial sensor nodes, motor control interfaces, smart lighting controllers, and medical diagnostic handhelds requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for CY8C24423A-24LTXI 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 architectures that unify analog, digital, and memory resources on a single chip.

The CY8C24x23A product line targets cost-sensitive, low-power industrial and consumer applications requiring flexible analog front-ends, real-time digital control, and field-upgradable firmware - without external glue logic or discrete signal conditioning.

FAQ

What is the maximum operating frequency of the M8C core in CY8C24423A-24LTXI?

The M8C CPU core operates at up to 24 MHz, delivering 4 MIPS performance. This frequency is achieved using the internal main oscillator (IMO) or optionally doubled to 48 MHz for digital subsystems via internal clock dividers - both validated across the full –40 °C to +85 °C temperature range and 2.4–5.25 V supply.

Does CY8C24423A-24LTXI support true hardware I²C master functionality?

Yes - it implements full hardware I²C with master, slave, and multi-master capability up to 400 kHz. The I²C module is implemented in dedicated digital PSoC blocks, supporting automatic START/STOP generation, ACK/NACK handling, and 7-bit/10-bit addressing without CPU intervention.

Can the analog blocks perform simultaneous ADC and DAC operations?

Yes - six independent analog PSoC blocks allow concurrent operation: one block can run a 14-bit SAR ADC while another executes a 9-bit DAC with programmable gain amplifier (PGA) and active filtering, all synchronized via shared clock and routing resources without contention.

Is ISSP supported for in-field firmware updates on CY8C24423A-24LTXI?

Yes - In-System Serial Programming (ISSP) is fully supported using the XRES and SWD pins. It enables complete flash reprogramming or partial updates via UART or custom host interface, preserving EEPROM-emulated data and respecting configured flash protection levels during field deployment.