Infineon Technologies CY8C27243-24PVIT

Overview

CY8C27243-24PVIT from Cypress Semiconductor is an 8-bit programmable mixed-signal system-on-chip (PSoC) integrating M8C CPU core, 16 KB Flash, 256 B SRAM, 8 digital PSoC blocks, and 12 analog PSoC blocks in a 28-pin SSOP package. It operates at up to 24 MHz, supports 3.0–5.25 V supply (or 1.0 V with on-chip switch-mode pump), and delivers rail-to-rail analog functions including 14-bit ADCs, 9-bit DACs, and programmable gain amplifiers for embedded sensor interface and motor control applications.

For engineers reviewing the CY8C27243-24PVIT datasheet, CY8C27243-24PVIT pinout, CY8C27243-24PVIT application, or CY8C27243-24PVIT equivalent, key selection criteria include its configurable analog/digital blocks, 24 MHz M8C core timing, 28-pin SSOP footprint, industrial temperature range (−40°C to +85°C), and ISSP™ in-system programming capability.

Technical Context

The CY8C27243-24PVIT implements a Harvard-architecture M8C CPU running at up to 24 MHz with 8×8 multiply/32-bit accumulate capability and 17 interrupt vectors. Its digital system comprises eight 8-bit configurable blocks supporting timers, PWMs (up to 32-bit), UARTs (up to two full-duplex), SPI masters/slaves, and CRC generators - all routable via global digital interconnect to any GPIO.

The analog system integrates twelve configurable blocks arranged in four columns (three per column), enabling rail-to-rail ADCs (6–14-bit, Delta-Sigma/SAR), DACs (6–9-bit), programmable filters (2–8 pole), instrumentation amplifiers (gain up to 93×), and comparators (16 thresholds). All analog resources connect through global analog interconnect and support up to 12 analog inputs and four 30 mA analog outputs.

Key Specifications

Pinout & Package

Package: 28-pin SSOP (Small Outline Integrated Circuit), body width 5.3 mm, lead pitch 0.65 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C27443-24PVXIT and CY8C29466-24PVXI, the CY8C27243-24PVIT offers optimal balance of analog/digital resources and compact 28-pin SSOP packaging for cost-sensitive, space-constrained embedded controllers where full 44-pin or 64-pin I/O is unnecessary.

Availability

CY8C27243-24PVIT is available at Aetrix Electronics and suitable for industrial motor control, sensor interface modules, LIN bus slave nodes, and portable medical devices requiring stable component supply and long-term production continuity.

Supply support for CY8C27243-24PVIT 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, USB controllers, and memory products since 1982.

The PSoC™ family was designed to replace multiple discrete analog/digital components with a single configurable chip for cost-sensitive, rapidly evolving embedded applications - targeting industrial automation, automotive subsystems, and consumer IoT endpoints.

FAQ

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

The CY8C27243-24PVIT is programmed using Cypress's free PSoC Designer IDE, which provides graphical user module configuration, C-language support, and integrated debugging. Hardware requirements include a MiniProg1 or MiniProg3 programmer pod connected via SWD interface. No external compiler license is needed - the IDE bundles a fully functional C compiler optimized for the M8C core.

Does the CY8C27243-24PVIT support true hardware UART with automatic baud rate detection?

Yes - it includes dedicated digital blocks that implement full-duplex UART with hardware-controlled start-bit detection, programmable baud rates (including standard 9600/115200), and automatic parity generation/checking. The UART block supports break detection and framing error handling without CPU intervention, meeting ISO 9141 and LIN 2.0 physical layer timing requirements.

Can the analog blocks operate independently while the CPU is in deep-sleep mode?

Yes - analog blocks retain configuration and can continue operating (e.g., continuous ADC conversions, comparator monitoring) during CPU sleep. The device supports wake-on-analog-event (e.g., comparator threshold crossing), allowing ultra-low-power sensor monitoring with typical current draw below 1 µA while maintaining analog functionality.

Is the 24 MHz internal oscillator calibrated at production, and what is its drift over temperature?

The 24 MHz Internal Main Oscillator (IMO) is factory-trimmed to ±2.5% accuracy across the full industrial temperature range (−40°C to +85°C) and 3.0–5.25 V supply. No external calibration is required. For higher precision, the device supports optional 32.768 kHz crystal + PLL to generate a crystal-referenced 24 MHz clock with ±0.1% stability.