Infineon Technologies CY8C27243-24PVXI

Overview

CY8C27243-24PVXI from Cypress Semiconductor is a PSoC® 1 programmable system-on-chip featuring an M8C 8-bit Harvard-architecture CPU running at up to 24 MHz, 16 KB flash, 256 bytes SRAM, and configurable analog/digital blocks-including 12 analog and 8 digital PSoC blocks-for mixed-signal embedded control in industrial sensor interfaces and motor control subsystems.

For engineers reviewing the CY8C27243-24PVXI datasheet, CY8C27243-24PVXI pinout, CY8C27243-24PVXI application, or CY8C27243-24PVXI equivalent, key selection criteria include its 24-MHz IMO accuracy (±2.5%), 3.0–5.25 V operating range, rail-to-rail analog block capability, and support for UART/SPI/I²C peripherals with GPIO-configurable interrupt triggers.

Technical Context

The CY8C27243-24PVXI implements a fixed-function M8C core with 17-interrupt-vector controller and integrated switch-mode pump enabling operation down to 1.0 V. Its digital system uses eight 8-bit PSoC blocks combinable into 8–32-bit timers, PWMs, CRC, and PRS modules, all routed via global digital interconnect to any GPIO.

The analog system integrates twelve rail-to-rail configurable analog blocks supporting up to 14-bit ADCs, 9-bit DACs, PGAs, and programmable filters-each with dedicated analog input muxing and four 30-mA analog outputs. Clocking includes a 24-MHz ±2.5% internal main oscillator (IMO), optional 32.768-kHz ECO with PLL for crystal-accurate 24-MHz generation, and 32-kHz ILO for low-power sleep timing.

Key Specifications

Pinout & Package

Package: 28-pin SOIC (SOIC-28), body width 300 mil, JEDEC MS-012AC compliant, RoHS-compliant lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C27443-24PVXI and CY8C29466-24PVXI, the CY8C27243-24PVXI delivers optimal cost-performance balance for mid-complexity industrial controls where 16 KB flash, 12 analog blocks, and 24-MHz deterministic timing meet functional requirements without over-provisioning.

Availability

CY8C27243-24PVXI is available at Aetrix Electronics and suitable for industrial sensor interfaces, motor control subsystems, smart power supply monitors, and capacitive touch interfaces requiring stable component supply and long-term production continuity.

Supply support for CY8C27243-24PVXI 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, with expertise in configurable analog/digital architectures and low-power system integration.

The CY8C27x43 series belongs to the PSoC 1 family, engineered for cost-sensitive industrial and consumer applications requiring flexible analog signal conditioning, deterministic real-time control, and field-upgradable firmware in compact SOIC packages.

FAQ

What development tools are required to program the CY8C27243-24PVXI?

PSoC Designer™ (free Windows IDE) is mandatory for configuration and code generation. Programming requires MiniProg1 or MiniProg3 via SWD interface. The CY3210-PSoCEval1 evaluation kit supports this device and provides onboard debugging, LCD, potentiometer, and breadboarding space for rapid prototyping.

Does the CY8C27243-24PVXI support true 14-bit analog-to-digital conversion?

Yes-the device achieves up to 14-bit effective resolution using successive approximation (SAR) architecture with programmable sample time and reference selection. Measured ENOB reaches 13.2 bits at 10 kSPS with external 2.5 V reference and proper PCB layout per AN74170 guidelines.

Can the internal 24-MHz oscillator meet UART timing requirements without an external crystal?

Yes-the ±2.5% accuracy of the internal main oscillator (IMO) supports UART communication up to 115.2 kbps at 3.3 V and 25 °C. For higher baud rates or wider temperature/voltage ranges, use the 32.768-kHz ECO with PLL to generate a crystal-locked 24-MHz clock.

Is EEPROM emulation reliable for storing calibration data across 10+ years?

Yes-EEPROM emulation uses flash wear-leveling algorithms validated for ≥100,000 write cycles and data retention exceeding 20 years at 85 °C. Cypress application note AN2219 specifies layout rules and software routines to ensure integrity under power-loss conditions.