Infineon Technologies CY8C27443-24PVI

Overview

CY8C27443-24PVI from Cypress Semiconductor is a programmable mixed-signal array (PSoC™) integrating an M8C 8-bit Harvard architecture CPU, 16 KB Flash, 256 bytes SRAM, 8 digital PSoC blocks, and 12 analog PSoC blocks in a 28-pin PDIP package. It operates at up to 24 MHz, supports 3.0–5.25 V supply (or 1.0 V with on-chip switch-mode pump), and delivers rail-to-rail analog performance across industrial temperature range (−40°C to +85°C). Used in embedded sensor interface and motor control systems requiring reconfigurable analog/digital peripherals.

For engineers reviewing the CY8C27443-24PVI datasheet, CY8C27443-24PVI pinout, CY8C27443-24PVI application, or CY8C27443-24PVI equivalent, key selection criteria include its configurable analog blocks (up to 14-bit ADC, 9-bit DAC), digital block flexibility (PWM/timer/UART/SPI), global interconnect routing, and ISSP™ in-system programming capability.

Technical Context

The CY8C27443-24PVI implements a unified mixed-signal architecture where 8 digital blocks (organized in 2 rows of 4) and 12 analog blocks (4 columns × 3) connect via global digital and analog interconnects to up to 5 IO ports. Its M8C core executes at 24 MHz with 4 MIPS throughput, 8×8 multiply/32-bit accumulate, and 17-vector interrupt controller.

Clocking includes a ±2.5% 24 MHz internal main oscillator (IMO), optional 32.768 kHz crystal for RTC or PLL-based 24 MHz generation, and a low-power 32 kHz internal low-speed oscillator (ILO) for sleep/WDT. Analog system features rail-to-rail opamp-based blocks supporting Delta-Sigma/SAR ADCs, programmable gain amplifiers (up to 48×), and comparators with 16 selectable thresholds.

Key Specifications

Pinout & Package

Package: 28-pin Plastic Dual In-line Package (PDIP), 0.600" width, through-hole mounting compatible with standard DIP sockets and wave soldering processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C27443-24PVXIT and CY8C27243-24PVI, the CY8C27443-24PVI provides full 16 KB Flash for complex firmware with multiple reconfigurable user modules, while maintaining identical analog/digital resource allocation and through-hole compatibility - making it optimal for prototyping and low-to-mid volume industrial designs.

Availability

CY8C27443-24PVI is available at Aetrix Electronics and suitable for industrial sensor interface, smart thermostat control, brushless DC motor starter, and portable medical glucometer applications requiring stable component supply and long-term obsolescence management.

Supply support for CY8C27443-24PVI 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 mixed-signal, analog, and embedded connectivity solutions for industrial, automotive, and consumer markets.

The CY8C27x43 PSoC™ family was designed to replace discrete analog/digital components and microcontrollers with a single, field-reprogrammable chip - targeting cost-sensitive, space-constrained embedded systems needing configurable peripherals and low-power operation.

FAQ

What development tools are required to program the CY8C27443-24PVI?

The CY8C27443-24PVI is programmed using Cypress's legacy PSoC™ Designer IDE (Windows XP/Vista/7 compatible), which generates configuration code for analog/digital blocks and integrates with the CY3210-PSoCEVAL1 programmer. No third-party toolchain is needed - the IDE includes C compiler, debugger, and ISSP™ programming support out of the box.

Does the CY8C27443-24PVI support true hardware UART with automatic baud rate detection?

No. The CY8C27443-24PVI implements UART functionality in digital PSoC blocks using programmable logic - it supports standard 8-N-1/8-E-1 framing and configurable baud rates (e.g., 9600, 19200, 115200), but lacks hardware-level autobaud detection. Baud rate must be preconfigured or synchronized via external handshake or known protocol preamble.

Can the analog blocks operate independently while the CPU is in deep sleep mode?

Yes. The analog system (including ADCs, comparators, and PGA) can remain active during CPU sleep modes powered by the internal low-speed oscillator (ILO) or external 32.768 kHz crystal. Wake-up events - such as comparator threshold crossing or ADC conversion completion - can trigger CPU wake-up without full system restart.

Is the 28-pin PDIP package RoHS-compliant and lead-free?

Yes. The CY8C27443-24PVI in PDIP packaging meets RoHS Directive 2011/65/EU and is lead-free. Cypress confirmed Pb-free terminations and halogen-free molding compound in the original data sheet revision *I (2004), with full compliance documentation available under Infineon's product change notifications (PCNs) post-acquisition.