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Infineon Technologies CY8C26443-24PVI
- Part No.:
- CY8C26443-24PVI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
CY8C26443-24PVI.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,143
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Product details
Overview
CY8C26443-24PVI from Cypress Semiconductor is a programmable System-on-Chip (PSoC™) integrating an M8C 8-bit Harvard-architecture CPU, 8KB Flash, 256B SRAM, 12 configurable analog PSoC blocks (including up to 11-bit Delta-Sigma ADC and 9-bit DAC), and 8 digital PSoC blocks (supporting PWM, UART, SPI, CRC). It operates at up to 24 MHz across 3.0–5.25 V and targets embedded sensor interface and mixed-signal control applications.
For engineers reviewing the CY8C26443-24PVI datasheet, CY8C26443-24PVI pinout, CY8C26443-24PVI application, or CY8C26443-24PVI equivalent, key selection considerations include its on-chip analog configurability, ISSP™ in-system programming capability, 24-pin PDIP package with Schmitt-trigger I/O, and legacy support status per Cypress's "Not Recommended for New Designs" guidance.
Technical Context
The CY8C26443-24PVI implements a fully static CMOS architecture with dual-clock domains: a high-speed system clock (up to 24 MHz from internal oscillator or external crystal) and a low-speed watchdog/sleep clock. Its analog subsystem uses switch-capacitor and continuous-time PSoC blocks, each independently configurable via PSoC Designer software to form ADCs, DACs, filters, or comparators without external components.
Digital functionality is delivered through eight reconfigurable digital PSoC blocks supporting timer-based PWM with deadband, full-duplex UART, SPI master/slave, and CRC generation. All peripherals are routed through a flexible interconnect matrix, enabling custom signal paths between analog/digital resources and GPIO pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture with 24 MHz max clock and hardware multiply/accumulate |
| Memory | 8 KB Flash (50,000 erase/write cycles) + 256 B SRAM; supports EEPROM emulation (2,304 B) |
| Analog Blocks | 12 user-configurable analog PSoC blocks: Delta-Sigma ADC (11-bit), SAR ADC (8-bit), incremental ADC (12-bit), DAC (9-bit), PGA, filters, comparators |
| Digital Blocks | 8 digital PSoC blocks: PWM timers, UART, SPI, CRC, real-time clock, event counters |
| Operating Voltage | 3.0 V to 5.25 V; supports down to 1.0 V via on-chip switch-mode voltage pump in low-power modes |
| Temperature Range | -40 °C to +85 °C industrial grade operation |
| Package | 24-pin plastic DIP (PDIP), 0.6-inch width, through-hole mounting compatible with legacy prototyping |
Pinout & Package
Package: 24-pin PDIP (Plastic Dual In-line Package), 0.600-inch body width, standard through-hole footprint. Pin pitch: 0.100 inch. RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main supply rail (3.0–5.25 V); powers CPU, memory, and all PSoC blocks |
| VSS | Ground reference | Digital and analog common ground; requires low-impedance connection to minimize noise coupling |
| XIN / XOUT | Crystal oscillator terminals | Supports optional 32.768 kHz crystal for precision timing or RTC; internal oscillator used by default |
| P0[0]–P0[7] | Port 0 bidirectional I/O | Schmitt-trigger inputs; configurable drive strength (25 mA logic, 40 mA analog), pull-up/down, interrupt-on-change |
| P1[0]–P1[7] | Port 1 bidirectional I/O | Same electrical characteristics as P0; supports analog routing to PSoC blocks when configured as analog input/output |
| P2[0]–P2[7] | Port 2 bidirectional I/O | Includes dedicated reset (P2[0]), SWD debug (P2[1]/P2[2]), and ISSP™ programming pins (P2[3]/P2[4]) |
| RESET | Active-low reset input | Asynchronous reset; internally pulled up; debounced externally recommended for noisy environments |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog Array | 12 independent analog PSoC blocks enable on-the-fly reconfiguration of ADCs, DACs, filters, and PGAs without external components or layout changes |
| In-System Serial Programming (ISSP™) | Field-upgradable firmware via 2-wire interface (P2[3]/P2[4]); no external programmer required for production or field updates |
| Flexible Clocking | Internal 24/48 MHz oscillator (±2.5%) eliminates need for external crystal in most applications; optional 32.768 kHz crystal for RTC accuracy |
| Low-Voltage Operation | On-chip switch-mode voltage pump enables functional operation down to 1.0 V, supporting battery-powered systems with deep discharge profiles |
| GPIO Interrupt Capability | Any port pin supports edge-triggered interrupt generation, enabling responsive wake-from-sleep on external events without polling overhead |
Applications
| Industrial Sensor Interface | Home Appliance Control |
|---|---|
Use Scenario: Reading thermistor, RTD, or bridge-based pressure sensors in HVAC controllers or PLC I/O modules. IC Role / Device Role / Timing Role: Configured as 12-bit incremental ADC with programmable gain amplifier and digital filtering to condition low-level analog signals before MCU processing. Use Value: Eliminates discrete op-amp and filter components while maintaining 12-bit effective resolution and <1 LSB INL over temperature. | Use Scenario: Motor speed control and panel button sensing in washing machines or microwave ovens. IC Role / Device Role / Timing Role: Generates precise PWM with adjustable deadband for triac/SCR gate drive and detects capacitive touch buttons using analog comparator bus. Use Value: Reduces BOM count by integrating motor control logic and human-interface sensing into single chip with shared clock and power domains. |
| Medical Diagnostic Instrumentation | Legacy Industrial Automation |
Use Scenario: Signal acquisition in portable ECG or pulse oximeter front-ends requiring low-noise analog conditioning. IC Role / Device Role / Timing Role: Implements Delta-Sigma ADC with 11-bit ENOB and programmable notch filtering to suppress 50/60 Hz mains interference. Use Value: Achieves clinical-grade signal fidelity without external anti-aliasing filters or precision reference ICs. | Use Scenario: Retrofitting analog control loops in aging factory equipment where PCB space and component count must be minimized. IC Role / Device Role / Timing Role: Replaces discrete 555 timers, op-amps, and logic gates with reprogrammable digital and analog functions mapped to existing 24-pin DIP footprint. Use Value: Maintains mechanical compatibility with legacy sockets while enabling firmware-based feature upgrades and diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C26643-24PVI | 16 KB Flash, 12 analog + 8 digital blocks, same package and pinout | Higher memory capacity supports larger firmware with multiple concurrent analog configurations | Select when firmware size exceeds 8 KB or multi-channel simultaneous ADC/DAC operation is required |
| CY8C27443-24PVXIT | Enhanced PSoC 3 architecture (8051 core), 32 KB Flash, USB interface, improved analog performance | Requires PCB redesign due to different pinout and 3.3 V-only operation; adds USB device capability | Choose for new designs needing USB connectivity, higher code density, or extended analog precision beyond PSoC 1 limits |
Compared with CY8C26443-24PVI, CY8C26643-24PVI offers double Flash capacity with identical pin compatibility for drop-in memory upgrades, while CY8C27443-24PVXIT delivers modern USB and 8051-based toolchain support but mandates hardware revision and voltage redesign.
Availability
CY8C26443-24PVI is available at Aetrix Electronics and suitable for industrial sensor interface, home appliance control, medical diagnostic instrumentation, and legacy industrial automation requiring stable component supply and long-term obsolescence management.
Supply support for CY8C26443-24PVI 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 U.S.-based semiconductor company specializing in programmable embedded solutions, USB controllers, and memory products, founded in 1982 and headquartered in San Jose, CA.
The PSoC 1 family-including CY8C26443-was designed to replace discrete analog and digital components in cost-sensitive, space-constrained embedded systems through software-defined peripheral configuration and rapid prototyping with PSoC Designer.
FAQ
Is CY8C26443-24PVI still in active production?
No-Cypress designated CY8C26443-24PVI as "Not Recommended for New Designs" in May 2005, advising migration to CY8C27xxx devices. However, Aetrix Electronics maintains limited legacy inventory with full traceability and supports ongoing maintenance programs for installed base systems.
What development tools are required to program CY8C26443-24PVI?
PSoC Designer 5.4 (or earlier compatible version) is mandatory for configuration and code generation. Programming requires a MiniProg1 or compatible ISSP™ programmer; no JTAG interface is present. The software includes pre-verified User Modules for ADC, DAC, UART, and PWM, eliminating manual register-level coding.
Can CY8C26443-24PVI operate below 3.0 V?
Yes-its on-chip switch-mode voltage pump enables functional operation down to 1.0 V, allowing use in single-cell Li-ion or alkaline battery systems. At sub-3.0 V, CPU speed is reduced and analog block resolution may degrade slightly; design validation at target voltage is required per Cypress AN2220.
Does CY8C26443-24PVI support USB or CAN interfaces?
No-CY8C26443-24PVI lacks native USB or CAN transceivers or protocol engines. Communication is limited to UART, SPI, and I²C (bit-banged via GPIO). For USB, consider CY8C27443 or later PSoC generations; for CAN, external transceivers with bit-banged software stack are required.
CY8C26443-24PVI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Series:
- PSOC™1 CY8C26xxx
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- M8C
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- SPI, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 24
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.25V
- Data Converters:
- A/D 1x8b, 1x11b, 1x12b; D/A 1x9b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C26443-24PVI FAQ
1.How can I place an order for CY8C26443-24PVI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C26443-24PVI on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY8C26443-24PVI reliable?
The price and inventory of CY8C26443-24PVI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C26443-24PVI is usually 5 days.
3.What payment methods are accepted for CY8C26443-24PVI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C26443-24PVI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C26443-24PVI?
CY8C26443-24PVI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C26443-24PVI order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY8C26443-24PVI?
For technical support, including CY8C26443-24PVI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C26443-24PVI requirements.
6.How does Aetrix verify that CY8C26443-24PVI is sourced from the original manufacturer or authorized distributors?
All CY8C26443-24PVI products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY8C26443-24PVI meets industry standards.
7.What is the process for return or replacement of CY8C26443-24PVI?
All CY8C26443-24PVI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C26443-24PVI, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY8C26443-24PVI part is unused and in its original packaging.
Return procedure for CY8C26443-24PVI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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