Infineon Technologies CY8C29466-24SXIT

Overview

CY8C29466-24SXIT from Infineon Technologies (formerly Cypress) is a programmable mixed-signal System-on-Chip (SoC) integrating an M8C 8-bit Harvard-architecture CPU, 32 KB flash, 2 KB SRAM, and configurable analog/digital PSoC blocks. It operates at up to 24 MHz, supports 3.0–5.25 V supply, and delivers rail-to-rail analog functions including 14-bit ADCs, 9-bit DACs, PGAs, and programmable filters - deployed in industrial sensor interface and motor control subsystems.

For engineers reviewing the CY8C29466-24SXIT datasheet, CY8C29466-24SXIT pinout, CY8C29466-24SXIT application, or CY8C29466-24SXIT equivalent, key selection criteria include its 28-pin SOIC package, ±5% internal oscillator accuracy (±2.5% over 0–70°C), 25-mA GPIO sink capability, on-chip switch-mode pump for 1.0 V operation, and support for up to four UARTs and two SPI interfaces.

Technical Context

The CY8C29466-24SXIT implements a fixed-function M8C core with interrupt controller (17 vectors), sleep/watchdog timers, and dual-clock domain architecture: 24/48 MHz IMO (±5%) with optional 32.768 kHz ECO + PLL for crystal-accurate timing. Its digital system comprises 16 reconfigurable 8-bit PSoC blocks supporting composite peripherals like 32-bit counters, PWMs with dead-band, and CRC/PRS modules.

Analog resources include 12 dedicated PSoC blocks enabling simultaneous high-precision signal conditioning: decimator-based 14-bit ΣΔ ADCs, 9-bit current-steering DACs, programmable gain amplifiers (up to 48×), and comparator-based window detection - all routed via global analog interconnect to eight standard and four restricted analog input pins.

Key Specifications

Pinout & Package

Package: 28-pin SOIC (Small Outline Integrated Circuit), 300 mil width, RoHS-compliant, JEDEC MS-012AC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C29466-24PVXI and CY8C29666-24PXIT, the CY8C29466-24SXIT offers optimal thermal performance and ease of hand-soldering in SOIC format, making it ideal for industrial control modules where reliability under sustained 85°C ambient and serviceability are prioritized over density.

Availability

CY8C29466-24SXIT is available at Aetrix Electronics and suitable for industrial sensor interface, motor control subsystems, smart power metering, and capacitive touch HMI applications requiring stable component supply across extended product lifecycles.

Supply support for CY8C29466-24SXIT 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

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and secure connectivity solutions.

This device belongs to the PSoC® 1 family - Infineon's legacy programmable mixed-signal SoC platform designed for cost-sensitive, high-integration embedded applications requiring analog + digital flexibility in a single chip.

FAQ

What development tools are required to program the CY8C29466-24SXIT?

PSoC Designer™ (free Windows IDE) is mandatory for configuring analog/digital blocks and generating firmware. Programming requires MiniProg3 or compatible ISSP programmer. Debugging uses SWD interface with full-speed emulation, 128 KB trace memory, and complex breakpoint support - no JTAG adapter needed.

Does the CY8C29466-24SXIT support true hardware UART with FIFO?

No. It implements UART functionality via digital PSoC blocks configured as 8-bit asynchronous receivers/transmitters with software-managed start/stop bit timing. No hardware FIFO is present; buffering relies on SRAM and CPU polling or interrupt-driven byte handling.

Can the internal 24 MHz oscillator meet timing-critical communication protocols?

Yes - the ±5% accuracy (±2.5% at 0–70°C) satisfies UART baud rate error tolerance (<±3%) up to 115.2 kbps. For SPI/I²C, timing margins remain sufficient due to synchronous clocking; however, USB or CAN require external crystal or PLL-stabilized clocks.

How is EEPROM emulation implemented and what endurance can be expected?

EEPROM emulation uses dedicated flash sectors managed by Cypress-provided API libraries. Each emulated byte supports ≥100,000 write cycles with wear leveling across 64-byte pages. Data retention exceeds 20 years at 85°C, validated per JEDEC JESD22-A117.