Infineon Technologies CY8C29566-24AXIT

Overview

CY8C29566-24AXIT from Infineon Technologies (formerly Cypress Semiconductor) is a programmable mixed-signal System-on-Chip (SoC) integrating an M8C 8-bit Harvard-architecture CPU, 32 KB flash, 2 KB SRAM, 12 analog PSoC blocks, and 16 digital PSoC blocks. It operates from 3.0 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 delivers up to 24 MHz core speed - used in embedded sensor interface and motor control subsystems.

For engineers reviewing the CY8C29566-24AXIT datasheet, CY8C29566-24AXIT pinout, CY8C29566-24AXIT application, or CY8C29566-24AXIT equivalent, key selection criteria include its configurable analog/digital blocks, ±5% internal oscillator accuracy over full temperature range, ISSP support for field updates, and GPIO drive capability (25 mA sink / 10 mA source).

Technical Context

The device implements a fixed-function M8C CPU core with interrupt controller (17 vectors), sleep/watchdog timers, and multiple clock sources: 24/48 MHz IMO (±5%), 32.768 kHz ECO option with PLL for crystal-accurate system clock, and low-power ILO. Memory architecture includes flash with 4-level block protection (64-byte granularity) and EEPROM emulation.

Digital peripherals are built from 16 reconfigurable 8-bit PSoC blocks supporting 8–32-bit timers/counters, 8/16-bit PWMs (with dead-band), up to four UARTs, multiple SPI masters/slaves, and I²C multi-master up to 400 kHz. Analog resources comprise 12 rail-to-rail blocks enabling ADCs up to 14-bit, DACs up to 9-bit, PGAs, and programmable filters/comparators.

Key Specifications

Pinout & Package

CY8C29566-24AXIT is housed in a 48-pin TQFP package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow the 48-pin part pinout defined in Document 38-12013 Rev. AD, pages 12–13.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C29466-24AXI, CY8C29566-24AXIT offers 50% more analog/digital blocks and 18 additional GPIOs - enabling complex sensor fusion or multi-channel control without external glue logic; versus CY8C29666-24AXI, it trades extended temperature rating for lower unit cost in commercial-grade applications.

Availability

CY8C29566-24AXIT is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, human-machine interface (HMI) panels, and power supply monitoring requiring stable component supply across long-lifecycle embedded programs.

Supply support for CY8C29566-24AXIT 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 acquired Cypress Semiconductor in 2020 and now owns and supports the full PSoC® portfolio, including legacy PSoC 1 devices. Infineon is a global semiconductor leader focused on power systems, automotive, and industrial applications.

CY8C29566-24AXIT belongs to the PSoC 1 family - designed specifically for cost-sensitive, low-power embedded systems requiring configurable analog and digital peripherals in a single chip, targeting industrial automation and consumer electronics.

FAQ

Is CY8C29566-24AXIT supported by current development tools?

Yes. PSoC Designer™ v5.4 remains the official IDE for CY8C29566-24AXIT and is fully supported by Infineon for legacy PSoC 1 devices. The MiniProg3 programmer/debugger is required for ISSP and in-circuit emulation. No migration to PSoC Creator or ModusToolbox is needed or supported for this device family.

What is the maximum ADC resolution achievable with CY8C29566-24AXIT?

The device supports up to 14-bit effective resolution using its Delta-Sigma ADC configuration within the analog PSoC blocks. This is achieved with internal reference, programmable gain amplifier (PGA), and decimator filtering - verified in the "Analog System" section of datasheet 38-12013 Rev. AD, page 5.

Can CY8C29566-24AXIT operate without an external crystal?

Yes. It uses an internal 24 MHz main oscillator (IMO) accurate to ±5% over temperature and voltage, eliminating the need for external crystals in non-RTC applications. A 32.768 kHz crystal is only required if precise real-time clock functionality or PLL-based 24 MHz clock stabilization is needed.

Does CY8C29566-24AXIT support EEPROM emulation, and how is it implemented?

Yes. It provides up to 2 KB of EEPROM emulation using flash memory with wear-leveling algorithms managed by the PSoC Designer-generated API. Emulated EEPROM retains data for >100 years at 25 °C and supports >100,000 write cycles per logical address - documented in the "Memory System" section of datasheet 38-12013 Rev. AD, page 20.