Infineon Technologies CY8C21323-24PVXIT

Overview

CY8C21323-24PVXIT from Infineon Technologies (acquired Cypress Semiconductor) is a programmable 8-bit Harvard-architecture PSoC® SoC featuring an M8C core running at up to 24 MHz, 4 KB flash, 256 bytes SRAM, and configurable analog/digital blocks for mixed-signal embedded control. 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 integrates UART, SPI, I²C, PWMs, 10-bit ADCs, and comparators - used in sensor interface and motor control subsystems.

For engineers reviewing the CY8C21323-24PVXIT datasheet, CY8C21323-24PVXIT pinout, CY8C21323-24PVXIT application, or CY8C21323-24PVXIT equivalent, key selection criteria include its 24-pin SSOP package, dual 10-bit ADC capability, ±5% internal oscillator tolerance (±2.5% at 0–70 °C), GPIO-configurable drive modes (25 mA sink), and PSoC Designer™ toolchain dependency.

Technical Context

The CY8C21323-24PVXIT implements a fixed-function M8C CPU core with Harvard architecture, supporting up to 24 MHz operation via internal IMO (24/48 MHz) and low-power ILO. Its digital system comprises four 8-bit digital PSoC blocks that can be combined into 8–32-bit timers, counters, PWMs, CRC generators, and full-duplex UART/SPI peripherals routed flexibly across GPIO.

The analog system includes four Type "E" analog PSoC blocks providing two comparators (with DAC or 1.3 V reference), and single/dual 10-bit 8-to-1 ADC configurations. All analog inputs are accessible on up to eight GPIO pins, and global analog/digital interconnect enables custom signal routing without fixed peripheral binding.

Key Specifications

Pinout & Package

Package: 24-pin SSOP (0.150" body width), JEDEC MO-015AA compliant, 0.635 mm pitch, 1.2 mm max height. RoHS-compliant, Pb-free matte tin lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C21423-24PVXIT, this part trades memory headroom for lower unit cost and identical analog/digital configurability; versus STM32F030F4P6, it provides hardware-level analog signal path customization at the expense of ARM ecosystem support and clock speed.

Availability

CY8C21323-24PVXIT is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat interfaces, BLDC motor starters, and medical patient monitor front-ends requiring stable component supply and long-term manufacturability.

Supply support for CY8C21323-24PVXIT 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 the PSoC® portfolio. Cypress pioneered programmable analog/digital SoCs for embedded control, emphasizing flexibility and rapid system integration.

The CY8C21x23 product line targets cost-sensitive, low-power mixed-signal applications where analog signal conditioning, sensor interfacing, and real-time control must coexist on one die - eliminating discrete signal chain components.

FAQ

Does CY8C21323-24PVXIT require an external crystal to operate?

No. It operates fully from its internal main oscillator (IMO) at 24 MHz or 48 MHz with ±5% accuracy. An external 32.768 kHz crystal is optional and only needed for precise real-time clock functions or improved stability below ±2.5% tolerance - not required for UART, PWM, or ADC timing in most industrial applications.

Can the 10-bit ADC perform simultaneous sampling on both channels?

No. The dual 10-bit ADC uses a shared 8:1 analog multiplexer and successive approximation register; it supports rapid sequential sampling (typ. 100 kSPS aggregate) but not true simultaneous acquisition. For synchronized dual-channel capture, external sample-and-hold circuitry or a different PSoC family (e.g., CY8C3x series) is required.

Is PSoC Designer™ software still supported for CY8C21323-24PVXIT development?

Yes. Infineon maintains legacy support for PSoC Designer™ v5.4 for CY8C21x23 devices, including full component library, ISSP programming, and ICE debugging. While new designs are encouraged to use ModusToolbox™ with PSoC 4/6, existing CY8C21x23 projects retain full toolchain compatibility and documentation access via Infineon's archived design resources.

What is the maximum allowed junction temperature during continuous operation?

The absolute maximum junction temperature is +125 °C, but the device is characterized and guaranteed for reliable operation within the industrial temperature range of –40 °C to +85 °C ambient. Thermal design must ensure θ_JA ≤ 120 °C/W (per SSOP package spec) to maintain T_J ≤ 85 °C at 5.25 V and full GPIO loading - verified via thermal impedance data in Document #38-12022 Rev. AC, page 35.