Infineon Technologies CY8C27443-24PVXI

Overview

CY8C27443-24PVXI from Cypress Semiconductor is a PSoC® 1 programmable system-on-chip featuring an M8C 8-bit Harvard architecture CPU running at up to 24 MHz, 16 KB flash, 256 bytes SRAM, and configurable analog/digital 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 integrates twelve analog and eight digital PSoC blocks for mixed-signal embedded control in space-constrained industrial sensors.

For engineers reviewing the CY8C27443-24PVXI datasheet, CY8C27443-24PVXI pinout, CY8C27443-24PVXI application, or CY8C27443-24PVXI equivalent, this device offers verified analog signal conditioning (14-bit ADC, PGA, programmable filters), deterministic real-time digital control (dual UART, PWM, CRC), and field-programmable I/O drive modes - all in a 44-pin SSOP package with ISSP support.

Technical Context

The CY8C27443-24PVXI implements a fixed-function M8C core with interrupt-driven execution across 17 vectors, paired with globally routable digital interconnects enabling dynamic composition of 8–32-bit peripherals (e.g., dual UARTs, 16-bit PWMs with dead-band, CRC/PRS modules). Its analog system uses switched-capacitor blocks with rail-to-rail input/output capability and programmable gain amplifiers.

Clocking combines a ±2.5% 24-MHz internal main oscillator (IMO), optional 32.768-kHz crystal for RTC, and PLL-based 48-MHz mode. Memory includes flash with 64-byte protection blocks, EEPROM emulation, and SRAM with full ISSP support - all managed via PSoC Designer's drag-and-drop user module configuration.

Key Specifications

Pinout & Package

Package: 44-pin Plastic Shrink Small Outline Package (SSOP), body width 5.3 mm, lead pitch 0.8 mm, JEDEC MO-153 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C27443-24PVXI, CY8C27543-24PVXI extends memory headroom without altering signal integrity or timing behavior, while CY8C27643-24PVXI increases functional density at the cost of higher static power and reduced availability in volume production.

Availability

CY8C27443-24PVXI is available at Aetrix Electronics and suitable for industrial sensor nodes, motor control interfaces, smart meter front-ends, and capacitive touch panels requiring stable component supply and long-term lifecycle support.

Supply support for CY8C27443-24PVXI 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) designs programmable mixed-signal ICs for embedded control, with expertise in configurable analog/digital architectures and low-power system integration.

The CY8C27x43 PSoC 1 family targets cost-sensitive, space-constrained industrial and consumer applications requiring field-programmable analog signal chains and deterministic real-time digital control - delivered in fixed-pin-count SSOP packages.

FAQ

Does CY8C27443-24PVXI support in-system programming after soldering?

Yes. The device supports In-System Serial Programming (ISSP) via SWD interface using MiniProg3 or compatible programmers. Firmware updates can be performed through two dedicated pins (SWDIO/SWCLK) without removing the IC from the board, enabling field upgrades and post-production calibration.

What is the maximum sampling rate of the 14-bit ADC in CY8C27443-24PVXI?

The 14-bit SAR ADC achieves up to 100 kSPS under typical conditions (VDD = 5.0 V, temperature = 25 °C). Actual throughput depends on configuration: oversampling reduces effective rate but improves SNR, while lower resolution modes (e.g., 12-bit) increase speed to 200 kSPS.

Can all GPIO pins be used for both analog input and digital functions simultaneously?

No. While 8 GPIOs (P0[0]–P0[7]) support full analog input capability, only 4 additional analog inputs (A8–A11) are available on P1[0]–P1[3] with routing restrictions. Simultaneous analog input and digital output on the same pin is not supported - pin function must be selected per configuration in PSoC Designer.

Is the 24-MHz internal oscillator accurate enough for UART communication?

Yes. The ±2.5% tolerance of the 24-MHz IMO meets UART timing requirements for 9600–115200 baud rates when using integer dividers. For higher baud accuracy (e.g., 1 Mbps), use the 32.768-kHz crystal with PLL to generate a crystal-referenced 24-MHz clock.