Infineon Technologies CY8C24423A4-24PVXI

Overview

CY8C24423A4-24PVXI 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 low-power control applications.

For engineers reviewing the CY8C24423A4-24PVXI datasheet, CY8C24423A4-24PVXI pinout, CY8C24423A4-24PVXI application, or CY8C24423A4-24PVXI equivalent, key selection criteria include its 28-pin PDIP package, 24 MHz IMO with ±5% accuracy, on-chip SMP enabling 1.0 V operation, configurable GPIO drive modes (25 mA sink), and integrated analog resources including PGA and decimator.

Technical Context

The CY8C24423A4-24PVXI implements a fixed-function M8C CPU core with Harvard architecture, supporting 8×8 multiply and 32-bit accumulate operations. Its clock system integrates a 24 MHz internal main oscillator (IMO), 32 kHz internal low-speed oscillator (ILO), optional 32.768 kHz external crystal oscillator (ECO), and PLL for crystal-accurate 24 MHz generation.

Digital peripherals are constructed from four 8-bit digital PSoC blocks, configurable as 8–32-bit timers/counters, 8/16-bit PWMs (with dead-band), full-duplex UART, SPI masters/slaves, and I²C slave/multi-master (400 kHz). Analog functionality is delivered via six rail-to-rail analog PSoC blocks supporting ADC, DAC, PGA, comparator, and programmable filter functions routed through global analog interconnect.

Key Specifications

Pinout & Package

Package: 28-pin plastic dual in-line package (PDIP), 0.600-inch width, lead pitch 0.100 inch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C24223A-24PVXI and CY8C24123A-24PVXI, the CY8C24423A4-24PVXI provides maximum I/O count and full analog resource complement-critical for designs requiring concurrent analog signal processing, multiple communication interfaces, and flexible GPIO routing without external glue logic.

Availability

CY8C24423A4-24PVXI is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance control systems, medical handheld diagnostics, and smart lighting controllers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for CY8C24423A4-24PVXI 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 delivers low-voltage, low-power PSoC 1 devices optimized for cost-sensitive industrial and consumer applications requiring analog signal conditioning, digital control, and flexible I/O-all within a single chip.

FAQ

What is the maximum operating frequency of the M8C core in CY8C24423A4-24PVXI?

The M8C CPU core operates at up to 24 MHz, supported by the internal main oscillator (IMO) with ±5% accuracy over temperature and voltage. This frequency is achievable across the full industrial temperature range (–40 °C to +85 °C) and supply range (2.4 V to 5.25 V), delivering 4 MIPS performance for real-time embedded tasks.

Does CY8C24423A4-24PVXI support true hardware I²C master mode?

Yes, the device supports full I²C functionality including slave, master, and multi-master modes up to 400 kHz. The I²C resource is implemented as a system-level peripheral accessible via dedicated registers and interrupt vectors, independent of digital PSoC blocks, ensuring deterministic timing and bus arbitration compliance.

Can the on-chip switch-mode pump (SMP) power all internal blocks at 1.0 V?

Yes-the SMP generates a regulated 1.0 V supply that powers the CPU core, flash, SRAM, and all digital and analog PSoC blocks. Operation at 1.0 V maintains full functionality including 24 MHz CPU execution, ADC conversions, and GPIO drive strength, enabling ultra-low-power battery-powered applications.

How many analog inputs can be simultaneously routed to the ADC subsystem?

Up to eight standard analog inputs are available on all GPIO pins, plus four additional analog inputs with restricted routing paths-totaling twelve possible analog input sources. However, the ADC subsystem's decimator supports up to eight channels concurrently, with multiplexing controlled via the analog input muxing register and global analog interconnect.