Infineon Technologies CY8C24223A-24SXI

Overview

CY8C24223A-24SXI from Cypress Semiconductor is a programmable 8-bit Harvard-architecture PSoC® SoC featuring an M8C CPU core running 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 CY8C24223A-24SXI datasheet, CY8C24223A-24SXI pinout, CY8C24223A-24SXI application, or CY8C24223A-24SXI equivalent, key selection criteria include its 28-pin SOIC package, configurable analog/digital blocks, 24 MHz IMO with ±5% accuracy, on-chip switch-mode pump for 1.0 V operation, and ISSP-enabled in-system programming capability.

Technical Context

The CY8C24223A-24SXI implements a fixed-function M8C CPU 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), optional 32.768 kHz crystal input with PLL for 24 MHz precision, and a low-power 32 kHz internal low-speed oscillator (ILO) for sleep/WDT timing.

Analog functionality is delivered via six rail-to-rail configurable analog PSoC blocks, each capable of implementing ADCs (up to 14-bit resolution with decimator), DACs (up to 9-bit), PGAs, comparators, or filters. Digital peripherals are built from four 8-bit digital PSoC blocks, combinable into 8–32-bit timers, PWMs, UART, SPI, I²C (slave/master/multi-master), CRC, and PRS modules - all routable to any GPIO via global interconnect.

Key Specifications

Pinout & Package

CY8C24223A-24SXI is housed in a 28-pin SOIC (Small Outline Integrated Circuit) package with 300 mil body width, JEDEC MS-012AC compliant, lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C24423A-24SXI, CY8C24223A-24SXI trades flash/SRAM capacity and GPIO count for lower unit cost and smaller footprint; versus CY8C24123A-24SXI, it delivers 100% more analog and digital resources within the same package - enabling dual-sensor interfaces or simultaneous communication protocols without redesign.

Availability

CY8C24223A-24SXI is available at Aetrix Electronics and suitable for industrial HMI development, sensor signal conditioning modules, smart LED driver designs, and low-power wireless node controllers requiring stable component supply and long-term manufacturability.

Supply support for CY8C24223A-24SXI 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 U.S.-based semiconductor company specializing in programmable embedded solutions, connectivity, and memory technologies.

The CY8C24x23A PSoC 1 family was designed to replace discrete analog/digital components with a single, field-programmable SoC for cost-sensitive, low-to-mid complexity embedded control and sensing applications.

FAQ

What development tools are required to program the CY8C24223A-24SXI?

The CY8C24223A-24SXI is programmed using Cypress's free PSoC Designer IDE (Windows-only) and a MiniProg3 programmer. PSoC Designer provides drag-and-drop user module configuration, C-code generation, and real-time debugging via SWD. No external JTAG adapter is needed - SWD uses a single pin and shares the RESET line for full in-circuit emulation.

Does the CY8C24223A-24SXI support true hardware UART with automatic baud rate detection?

No, the CY8C24223A-24SXI implements UART as a digital user module synthesized from its four digital PSoC blocks. It supports standard asynchronous framing (8N1, 9N1), programmable baud rates (e.g., 9600, 115200), and full-duplex operation, but lacks automatic baud rate detection or hardware flow control (RTS/CTS). Baud rate is set via software-configured timer dividers tied to the selected clock source.

Can the analog blocks perform simultaneous sampling across multiple channels?

No - the CY8C24223A-24SXI's six analog blocks share a single analog bus and decimator resource. While multiple ADC configurations can be defined, only one analog conversion (e.g., one channel at a time) executes concurrently. Sequential sampling across up to eight analog inputs is supported via multiplexer routing, with typical conversion times of 10–100 µs per 12-bit sample depending on clock and resolution settings.

Is the 24 MHz internal oscillator stable enough for USB or audio clocking applications?

No - the 24 MHz internal main oscillator (IMO) has ±5% tolerance over temperature and voltage, making it unsuitable for USB (requires ±0.25%) or audio bit-clocking (typically ±100 ppm). For such applications, the device must use the 32.768 kHz external crystal oscillator (ECO) with PLL to generate a crystal-referenced 24 MHz clock, achieving ±20 ppm stability when paired with a precision crystal.