Infineon Technologies CY8C24423A-24PVXAT

Overview

CY8C24423A-24PVXAT 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 control with mixed-signal integration.

For engineers reviewing the CY8C24423A-24PVXAT datasheet, CY8C24423A-24PVXAT pinout, CY8C24423A-24PVXAT application, or CY8C24423A-24PVXAT equivalent, key selection criteria include its 28-pin PDIP package, 24 MHz IMO with ±5% accuracy, configurable GPIO drive modes (25 mA sink), on-chip switch-mode pump for 1.0 V operation, and integrated analog resources enabling sensor interface and motor control without external signal conditioning.

Technical Context

The CY8C24423A-24PVXAT 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 (±5% over temperature/voltage), optional 32.768 kHz crystal input with PLL for 24 MHz crystal-locked output, and a low-power 32 kHz internal low-speed oscillator for sleep/WDT.

Analog functionality is delivered via six independent, rail-to-rail PSoC blocks-each configurable as PGA, comparator, filter, ADC (up to 14-bit SAR), or DAC (up to 9-bit)-with eight standard analog inputs routed to all GPIOs and two 30 mA analog outputs. Digital peripherals include UART, SPI, I²C (400 kHz multi-master), CRC/PRS modules, and 8–32-bit timers built from four reconfigurable digital blocks.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C24223A-24PVXIT and CY8C24123A-24PVXIT, the CY8C24423A-24PVXAT delivers full analog resource complement and industrial temperature compliance - making it the baseline choice for new designs requiring sensor interface flexibility and guaranteed operation up to +85 °C.

Availability

CY8C24423A-24PVXAT is available at Aetrix Electronics and suitable for industrial sensor nodes, motor control feedback systems, capacitive touch HMI, and low-power remote monitoring requiring stable component supply and long-term manufacturability.

Supply support for CY8C24423A-24PVXAT 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) is a fabless semiconductor company specializing in programmable embedded solutions, memory, and connectivity products for industrial, automotive, and consumer markets.

The CY8C24x23A PSoC 1 family was designed to replace discrete analog and digital peripherals with a single, field-programmable SoC - targeting cost-sensitive, low-to-mid complexity embedded control applications requiring rapid prototyping and hardware reuse.

FAQ

What development tools are required to program the CY8C24423A-24PVXAT?

The CY8C24423A-24PVXAT is programmed using Cypress's free PSoC Designer IDE (Windows only), which provides drag-and-drop hardware configuration and C firmware development. Programming hardware includes the CY8CKIT-002 MiniProg3 programmer/debugger, which connects via USB and supports ISSP through the SWD interface. No external high-voltage programming supply is needed.

Does the CY8C24423A-24PVXAT support true hardware I²C master mode?

Yes - the CY8C24423A-24PVXAT implements full I²C master, slave, and multi-master functionality up to 400 kHz, with dedicated hardware in the digital PSoC blocks. It supports standard 7-bit addressing, repeated START conditions, clock stretching, and arbitration - verified in AN2223 and the PSoC 1 TRM Section 12.3.

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

Yes - the internal main oscillator (IMO) achieves ±5% accuracy over –40 °C to +85 °C and ±2.5% from 0 °C to +70 °C. At 24 MHz, this supports standard UART baud rates (e.g., 9600, 19200, 38400, 115200) with <2% error margin, confirmed in Table 3-1 of the datasheet and validated in AN2094 UART design examples.

How is EEPROM functionality implemented on this device?

EEPROM is emulated in the 4 KB flash memory using Cypress's Flash_EEPROM user module, which manages wear-leveling across designated flash sectors. The implementation supports up to 2 KB of EEPROM-equivalent storage with 100,000 write cycles per logical address, as documented in AN2015 and the PSoC 1 TRM Section 5.4.