Infineon Technologies CY8C24423A-24PVXI

Overview

CY8C24423A-24PVXI 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 sensor interface and mixed-signal control applications.

For engineers reviewing the CY8C24423A-24PVXI datasheet, CY8C24423A-24PVXI pinout, CY8C24423A-24PVXI application, or CY8C24423A-24PVXI equivalent, key selection criteria include its 28-pin PDIP package, on-chip switch-mode pump enabling 1.0 V operation, configurable GPIO drive modes (25 mA sink), integrated 32 kHz crystal oscillator support with PLL for 24 MHz accuracy, and EEPROM emulation in flash.

Technical Context

The CY8C24423A-24PVXI implements a fixed-function M8C 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 precision timing.

Analog resources include six rail-to-rail PSoC blocks with programmable gain amplifiers, comparators, filters, and decimators; digital resources comprise four 8-bit blocks combinable into 8–32-bit peripherals - including full-duplex UART, multi-master I²C (400 kHz), and PWM with dead-band - all routable to any GPIO via global interconnect.

Key Specifications

Pinout & Package

CY8C24423A-24PVXI is housed in a 28-pin plastic dual in-line package (PDIP) with 0.600-inch body width and standard through-hole mounting. Pin assignments are validated per Cypress Document No. 38-12028 Rev. *W, Page 12 (28-Pin Part Pinout).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C24223A-24PVXI, this part doubles flash and SRAM for richer firmware and data buffering; compared with CY8C24423A-24LFXI, it retains through-hole manufacturability and prototyping flexibility without sacrificing mixed-signal capability.

Availability

CY8C24423A-24PVXI is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home thermostats, portable medical monitors, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and through-hole assembly compatibility.

Supply support for CY8C24423A-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 family delivers low-voltage, low-power programmable SoCs targeting cost-sensitive industrial and consumer applications needing analog + digital integration in compact PDIP packages.

FAQ

Does CY8C24423A-24PVXI support in-circuit debugging?

Yes. It features a single-wire Serial Wire Debug (SWD) interface compatible with Cypress MiniProg3 and third-party ICE tools. Full-speed emulation, 128 KB trace memory, and complex breakpoint structures are supported via PSoC Designer IDE without requiring additional debug headers or pins.

Can the internal 24 MHz oscillator meet timing-critical UART communication?

The internal main oscillator (IMO) has ±5% accuracy over temperature and voltage, which exceeds typical UART tolerance (±2–3%). For reliable 115.2 kbps UART, use the 32.768 kHz external crystal with PLL to generate a crystal-accurate 24 MHz clock - confirmed in Cypress TRM Section 3.2.3.

How many analog input channels can be used simultaneously?

Up to 12 analog inputs: eight standard analog-capable GPIOs across all ports plus four additional analog inputs on Port 0 and Port 1 with restricted routing - verified in the "Analog Input Muxing" section of the TRM and pinout diagram on page 12 of DS38-12028.

Is EEPROM emulation wear-leveling handled automatically in firmware?

No. While Cypress provides EEPROM emulation libraries in PSoC Designer, wear-leveling logic must be implemented in application code. The flash block protection scheme (64-byte granularity) and ISSP update capability enable safe partial writes, but endurance management is developer responsibility per AN2015.