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Infineon Technologies CY8C29566-24AXI — Microcontrollers & Processors (MCU / MPU / DSP)

CY8C29566-24AXI PSoC 1 MCU, 8-bit M8C, 24 MHz, 32 KB Flash

MPNCY8C29566-24AXI
End of Life

Cypress PSoC 1 CY8C29xxx series, CY8C29566-24AXI, 8-bit M8C MCU, 24 MHz, 32 KB Flash, 2K x 8 RAM, 40 I/O, I²C/SPI/UART/USART, 12x14b ADC + 4x9b DAC, 3V–5.25V, -40°C to 85°C, 44-TQFP.

$15.97Ref. price · indicative, final on quote
Packaging44-LQFP
RoHSROHS3 Compliant
SeriesPSOC®1 CY8C29xxx
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CY8C29566-24AXI specifications
ParameterValue
SeriesPSOC®1 CY8C29xxx
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))3V ~ 5.25V
Operating temperature-40°C ~ 85°C (TA)
Speed24MHz
PackageTray
RAM size2K x 8
Core size8-Bit
PeripheralsPOR, PWM, WDT
ConnectivityI²C, SPI, UART/USART
Number of i (O)40
Core processorM8C
Case44-LQFP
Data convertersA/D 12x14b; D/A 4x9b
Program memory size32KB (32K x 8)

Product details

What this PSoC 1 MCU brings to the board

The Cypress CY8C29566-24AXI is an 8-bit PSoC 1 microcontroller built around the proprietary M8C core clocked at 24 MHz. The part integrates a 12-channel 14-bit ADC and a 4-channel 9-bit DAC on-chip, which cuts the analog front-end BOM for sensor conditioning or closed-loop control. Packaged in a 44-TQFP (10x10 mm) with 40 accessible I/O lines, it gives enough pins for parallel displays, keypads, or multiple sensor interfaces.

Integrated analog — fewer external parts

The 12-channel 14-bit ADC handles multiplexed analog inputs from thermistors, potentiometers, or current-sense resistors. The 4-channel 9-bit DAC can generate reference voltages or drive analog setpoints. For a control board that needs a few analog I/O channels, this PSoC 1 eliminates a separate ADC chip and a DAC chip, saving board space and procurement line items.

ROHS3 compliance is confirmed, so it passes EU material restrictions without an exemption hunt.

Frequently asked questions

Does CY8C29566-24AXI support I2C, SPI, and UART interfaces?

Yes. The connectivity block includes I²C, SPI, and UART/USART, covering the three most common serial protocols for sensor, display, and actuator integration.

What is a direct replacement or equivalent for CY8C29566-24AXI?

The tape-and-reel variant CY8C29566-24AXIT is functionally identical — same M8C core, 24 MHz, 32 KB Flash, same analog and I/O — only the shipping medium differs. For a lower I/O count in the same PSoC 1 family, the CY8C29466-24PVXI offers 24 I/O in a different package.