Infineon Technologies CY8C24223A-24SXIT

Overview

CY8C24223A-24SXIT 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, and integrated analog/digital blocks including six analog and four digital PSoC blocks. It operates from 2.4 V to 5.25 V (or down to 1.0 V with on-chip switch-mode pump), supports industrial temperature range (–40 °C to +85 °C), and targets embedded control applications requiring mixed-signal integration and in-system reprogrammability.

For engineers reviewing the CY8C24223A-24SXIT datasheet, CY8C24223A-24SXIT pinout, CY8C24223A-24SXIT application, or CY8C24223A-24SXIT equivalent, key selection criteria include its 28-pin SOIC package, 24 MHz max clock speed, 2.4 V minimum operating voltage, I²C/SPI/UART peripheral support, and configurable GPIO drive modes (25 mA sink, 10 mA source) for sensor interface and motor control designs.

Technical Context

The CY8C24223A-24SXIT implements a fixed-function M8C CPU core with Harvard architecture, supporting 8×8 multiply and 32-bit accumulate operations. Its clock system includes a ±5% 24 MHz internal main oscillator (IMO), optional 32.768 kHz crystal input with PLL for 24 MHz accuracy, and a low-power 32 kHz internal low-speed oscillator (ILO) for sleep/wake timing.

Digital resources comprise four 8-bit digital PSoC blocks that can be combined into 8–32-bit timers, PWMs, UART, SPI, and I²C (slave/master/multi-master up to 400 kHz). Analog resources include six rail-to-rail analog PSoC blocks supporting ADCs up to 14-bit, DACs up to 9-bit, PGAs, filters, and comparators - all routed via global analog interconnect to eight standard analog-capable GPIOs.

Key Specifications

Pinout & Package

Package: 28-pin SOIC (Small Outline Integrated Circuit), 300 mil width, RoHS-compliant, surface-mount.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C24423A-24SXIT and CY8C24123A-24SXIT, the CY8C24223A-24SXIT offers balanced memory (4 KB flash / 256 bytes SRAM) ideal for mid-complexity embedded control - sufficient for CapSense® + communication stacks without over-provisioning silicon area or cost.

Availability

CY8C24223A-24SXIT is available at Aetrix Electronics and suitable for capacitive touch interfaces, industrial sensor nodes, smart lighting control, and low-power battery-operated devices requiring stable component supply and long-term manufacturability.

Supply support for CY8C24223A-24SXIT 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, connectivity, and memory technologies.

The CY8C24x23A PSoC 1 family was designed for cost-sensitive, low-to-mid complexity embedded control applications requiring analog/digital integration, field-upgradable firmware, and rapid prototyping - targeting appliances, industrial controls, and human interface devices.

FAQ

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

PSoC Designer™ (free Windows-based IDE) is the official development environment, providing drag-and-drop hardware configuration, C code generation, and in-circuit debugging. Programming requires MiniProg3 (CY8CKIT-002) or MiniProg1 (CY3217), both supporting ISSP via two-wire interface. No external programmer hardware is needed beyond these certified tools.

Does the CY8C24223A-24SXIT support true hardware UART with FIFO or flow control?

No - it implements a software-emulated UART using digital PSoC blocks, supporting 8-bit data, selectable parity, and configurable baud rates up to 115.2 kbps. Hardware flow control (RTS/CTS) and FIFO buffering are not implemented; handshaking must be managed in firmware using GPIOs or external logic if required.

Can the analog blocks perform simultaneous sampling across multiple channels?

No - the six analog blocks share a single SAR ADC core; multi-channel sampling requires sequential conversion with configurable sample-and-hold timing. Simultaneous sampling is not supported, but channel scanning at up to 1 MSPS aggregate rate is achievable using automatic sequencing and DMA-like block chaining.

Is the 24 MHz internal oscillator stable enough for USB or precise timing applications?

No - the ±5% tolerance of the 24 MHz IMO makes it unsuitable for USB or other strict timing protocols. For such applications, use the 32.768 kHz crystal with PLL to generate a crystal-referenced 24 MHz clock (±100 ppm typical), which meets USB full-speed timing requirements and supports accurate RTC functionality.