Infineon Technologies CY8C24423A-24SXIT

Overview

CY8C24423A-24SXIT from Cypress Semiconductor is a programmable 8-bit PSoC® System-on-Chip featuring an M8C CPU core running at up to 24 MHz, 4 KB flash, 256 bytes SRAM, six analog and four digital configurable blocks, and operation from 2.4 V to 5.25 V across –40 °C to +85 °C. It integrates ADCs (up to 14-bit), DACs (up to 9-bit), PGAs, PWMs, UART, SPI, I²C, and on-chip voltage reference for embedded sensor interface and control applications.

For engineers reviewing the CY8C24423A-24SXIT datasheet, CY8C24423A-24SXIT pinout, CY8C24423A-24SXIT application, or CY8C24423A-24SXIT equivalent, key selection criteria include its 28-pin SOIC package, 24 MHz internal oscillator accuracy (±5%), programmable GPIO drive modes (25 mA sink), analog input routing flexibility, and ISSP-based in-system programming capability.

Technical Context

The CY8C24423A-24SXIT implements a Harvard-architecture M8C core with 8×8 multiply and 32-bit accumulate instructions, supported by dual clock domains: a ±5% 24 MHz IMO (doublable to 48 MHz) and a 32 kHz ILO for low-power sleep. Its global digital and analog interconnects enable dynamic routing of signals between four digital PSoC blocks and six analog PSoC blocks.

Analog resources include decimator-based ADCs with up to 14-bit resolution, rail-to-rail PGA stages, and programmable filters; digital peripherals include 8–32-bit timers/counters, 8/16-bit PWMs with dead-band, full-duplex UART, SPI masters/slaves, and I²C multi-master support up to 400 kHz - all configurable via PSoC Designer without hardware changes.

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 SoC applications.

Compared with CY8C24223A-24SXIT, the CY8C24423A-24SXIT adds two analog blocks and I²C multi-master capability - enabling simultaneous sensor hub and display interface; versus CY8C24423-24LFXIT, it trades thermal efficiency for SOIC manufacturability and legacy board compatibility.

Availability

CY8C24423A-24SXIT is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance control units, medical wearable monitors, and smart lighting controllers requiring stable component supply and long-term production continuity.

Supply support for CY8C24423A-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) designs programmable mixed-signal ICs for embedded control, offering PSoC architecture since 2002 with focus on configurability and system integration.

The CY8C24x23A product line targets cost-sensitive industrial and consumer applications requiring analog-rich, low-voltage programmable SoCs - emphasizing rapid prototyping, reduced external component count, and field-upgradable firmware.

FAQ

Does CY8C24423A-24SXIT support USB connectivity?

No. The CY8C24423A-24SXIT does not include a USB physical layer or USB controller. It supports UART, SPI, and I²C for host communication. USB functionality requires an external transceiver or bridge IC, such as the CY7C63xxx series, or migration to a PSoC 3/4 device with native USB support.

Can the internal 24 MHz oscillator be used for UART baud rate generation?

Yes. The internal 24 MHz IMO is directly usable for UART clocking via programmable dividers in PSoC Designer. Achievable baud rates include 9600, 19200, 38400, 57600, and 115200 bps with <±1% error using integer division - sufficient for most industrial serial interfaces without external crystal.

What is the maximum sampling rate of the ADC in CY8C24423A-24SXIT?

The decimator-based ADC achieves up to 192 kSPS at 8-bit resolution, 12 kSPS at 12-bit, and 1 kSPS at 14-bit effective resolution. Maximum sample rate depends on configured resolution and oversampling ratio; actual throughput is constrained by CPU overhead for result readout and processing.

Is there hardware support for AES or cryptographic operations?

No. The CY8C24423A-24SXIT lacks dedicated cryptographic accelerators or hardware AES engines. Security relies on software-implemented algorithms in flash-resident firmware. For hardware crypto, consider PSoC 4 or PSoC 5LP devices with TRNG and cryptographic co-processors.