Infineon Technologies CY8C26443-24PVIT

Overview

CY8C26443-24PVIT from Cypress Semiconductor is a programmable System-on-Chip (PSoC™) integrating an M8C 8-bit Harvard architecture CPU, 8 KB Flash, 256 bytes SRAM, 12 configurable analog PSoC blocks (including up to 11-bit Delta-Sigma ADC and 9-bit DAC), and 8 digital PSoC blocks (including PWM, UART, SPI, CRC). It operates at up to 24 MHz, supports 3.0–5.25 V supply, and targets embedded control with mixed-signal reconfigurability in industrial sensors and motor control interfaces.

For engineers reviewing the CY8C26443-24PVIT datasheet, CY8C26443-24PVIT pinout, CY8C26443-24PVIT application, or CY8C26443-24PVIT equivalent, key selection considerations include its on-chip analog block configurability, ISSP™ in-system programming capability, 24 MHz clock tolerance (±2.5%), and support for precision analog signal conditioning without external components.

Technical Context

The device implements a fully static CMOS architecture with dual-clock domains: a high-speed system clock (up to 24 MHz from internal oscillator) and a low-speed watchdog/sleep clock (32.768 kHz crystal optional). Its analog subsystem uses switch-capacitor and continuous-time PSoC blocks, each independently configurable as ADC, DAC, PGA, comparator, or filter via PSoC Designer GUI.

Digital functionality is delivered through eight user-programmable digital blocks supporting timer-based PWM with deadband, full-duplex UART, SPI master/slave, and CRC generation. Memory includes 8 KB Flash (50,000 erase/write cycles), 256-byte SRAM, and EEPROM emulation up to 2,304 bytes - all accessible via ISSP™ without external hardware programmers.

Key Specifications

Pinout & Package

Package: 28-pin SOIC (SOIC-28, body width 300 mil, JEDEC MS-012AC).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C26643-24PVIT, this part trades memory headroom for cost-sensitive integration; versus CY8C27443-24PVIT, it retains legacy toolchain compatibility and lower unit cost at the expense of modern analog specs and scalability.

Availability

CY8C26443-24PVIT is available at Aetrix Electronics and suitable for industrial sensor interface, motor control feedback, and smart lighting control requiring stable component supply across long-lifecycle embedded programs.

Supply support for CY8C26443-24PVIT 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) is a fabless semiconductor company specializing in programmable embedded solutions, USB controllers, and memory products.

This device belongs to the PSoC™ 1 family - designed for rapid prototyping and production of mixed-signal embedded systems where analog/digital peripheral flexibility outweighs raw processing power.

FAQ

Is CY8C26443-24PVIT still recommended for new designs?

No - Cypress explicitly marks this part as "Not Recommended for New Designs" in its official datasheet (Rev. *C, May 2005), advising migration to CY8C27xxx or later PSoC generations. However, it remains actively supported for legacy program continuity, with full documentation, toolchain (PSoC Designer v5.4), and second-source availability through authorized distributors.

What development tools are required to program CY8C26443-24PVIT?

PSoC Designer v5.4 is the official IDE, providing graphical user module configuration, automatic code generation, and ISSP™ programming via MiniProg1 or compatible SWD adapters. No JTAG hardware is needed - the two-wire SWD interface enables full programming, debugging, and calibration directly on the target board.

Does CY8C26443-24PVIT support true hardware AES or secure boot?

No - this PSoC 1 device lacks dedicated cryptographic accelerators or secure boot ROM. It provides Flash protection modes (read/write lock bits) and ISSP™ password protection, but does not implement AES, SHA, or public-key cryptography. Secure firmware updates require external co-processors or host-side authentication.

Can analog PSoC blocks operate simultaneously with different sampling rates?

Yes - each analog block has independent clocking sources and trigger inputs. For example, one block can run a 100 kSPS Delta-Sigma ADC while another executes a 1 MSPS comparator-based zero-crossing detector, with no shared timing constraints beyond global clock domain selection.