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Infineon Technologies CY8C26443-24SXI
- Part No.:
- CY8C26443-24SXI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY8C26443-24SXI.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,658
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Product details
Overview
CY8C26443-24SXI 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 blocks (including ΔΣ ADC, DAC, PGA, filters), and 8 digital blocks (PWM, UART, SPI, timers). It operates at up to 24 MHz, supports 3.0–5.25 V supply, and targets embedded control with mixed-signal flexibility in industrial sensors and motor interface modules.
For engineers reviewing the CY8C26443-24SXI datasheet, CY8C26443-24SXI pinout, CY8C26443-24SXI application, or CY8C26443-24SXI equivalent, this page delivers verified technical context, validated pin functions, confirmed analog/digital resource allocation, and real-world use cases for rapid PSoC-based design evaluation and migration planning.
Technical Context
The CY8C26443-24SXI implements a fully static CMOS PSoC architecture with user-configurable analog and digital peripheral arrays. Its M8C core executes at 24 MHz with 8×8 multiply/32-bit accumulate support, and on-chip clocking includes internal 24/48 MHz oscillators (±2.5%) plus optional 32.768 kHz crystal input for PLL synchronization.
Analog resources include up to 11-bit Delta-Sigma ADC, 9-bit DAC, programmable gain amplifier, and switch-capacitor filters; digital resources provide PWM with deadband, full-duplex UART, SPI master/slave, CRC, and real-time clock timers-all routed via flexible interconnect matrix without external glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture with 24 MHz max clock and hardware multiply/accumulate |
| Flash Memory | 8 KB program memory with 50,000 erase/write cycles and partial update capability |
| SRAM | 256 bytes data memory for runtime variables and stack operations |
| Analog Blocks | 12 configurable blocks supporting ΔΣ ADC (11-bit), DAC (9-bit), PGA, LPF, comparator |
| Digital Blocks | 8 programmable blocks including PWM, UART, SPI, CRC, and event timers |
| Operating Voltage | 3.0–5.25 V nominal; down to 1.0 V using on-chip voltage pump in low-power modes |
| Temperature Range | –40 °C to +85 °C industrial grade operation without derating |
Pinout & Package
Package: 28-pin SOIC (SOIC-28), body width 300 mil, lead pitch 1.27 mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main 3.0–5.25 V supply for core and I/O; decoupling required at pin |
| VSS | Ground reference | Digital and analog ground common point; low-impedance return path essential |
| XIN / XOUT | Crystal oscillator terminals | Supports 32.768 kHz crystal for precision timing or RTC; optional for internal oscillator use |
| P0[0]–P0[7] | General-purpose I/O bank | Configurable as digital input/output, analog input, or interrupt source; Schmitt-trigger inputs |
| P1[0]–P1[7] | General-purpose I/O bank | Same functionality as P0; supports analog output drive up to 40 mA for sensor excitation |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers and halts execution until deasserted |
| SWD | Serial Wire Debug port | 2-pin debug interface for programming and real-time debugging via ISSP™ protocol |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog Array | 12 independent analog blocks enable simultaneous ADC, DAC, filtering, and sensing without external components |
| Programmable Digital Array | 8 digital blocks allow concurrent PWM generation, serial communication, and CRC calculation in single-chip solution |
| In-System Serial Programming | ISSP™ enables field firmware updates via two pins without removing device from PCB |
| Flexible Clocking | Internal 24/48 MHz oscillator eliminates need for external crystal in cost-sensitive applications |
| Low-Voltage Operation | On-chip voltage pump allows functional operation down to 1.0 V, enabling battery-powered designs with extended life |
Applications
| Industrial Sensor Interface | Motor Control Module |
|---|---|
Use Scenario: Condition monitoring of temperature, pressure, and current in factory automation nodes. IC Role / Device Role / Timing Role: Configurable analog front-end digitizes sensor outputs; digital blocks generate PWM for actuator drivers and handle UART telemetry. Use Value: Single-chip integration reduces BOM count by 7+ discrete ICs and eliminates analog calibration drift through on-chip reference trimming. | Use Scenario: Closed-loop speed control of BLDC motors in HVAC blowers and conveyor systems. IC Role / Device Role / Timing Role: Real-time PWM with programmable deadband drives gate drivers; incremental ADC monitors back-EMF for commutation timing. Use Value: Hardware-accelerated motor control logic runs independently of CPU, freeing M8C for supervisory tasks and fault logging. |
| Smart Power Metering | Human-Machine Interface (HMI) |
Use Scenario: Energy measurement and tamper detection in residential electricity meters. IC Role / Device Role / Timing Role: Delta-Sigma ADC samples voltage/current waveforms at 10 kSPS; digital blocks compute RMS, harmonics, and perform secure flash updates. Use Value: On-chip EEPROM emulation stores calibration coefficients and metering logs with 10-year retention without external nonvolatile memory. | Use Scenario: Keypad scanning, LED dimming, and buzzer feedback in medical device control panels. IC Role / Device Role / Timing Role: GPIO interrupts detect key presses; programmable filters suppress EMI noise; DAC drives analog LED brightness control. Use Value: Mixed-signal configurability replaces dedicated keypad scanner, LED driver, and audio generator ICs-reducing layer count and test points. |
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 |
|---|---|---|---|
| CY8C26643-24SXI | 16 KB Flash, 512 B SRAM, same PSoC block count and clock specs | Higher memory headroom for complex state machines and larger firmware images | Select when firmware exceeds 8 KB or requires >256 B RAM for buffer-intensive protocols |
| CY8C27443-24PVXI | Newer PSoC 3 generation; 8051 core, 32 KB Flash, enhanced analog performance, USB interface | Supports USB HID, higher-resolution ADC (12-bit SAR), and faster interrupt response | Choose for new designs requiring USB connectivity or >1 MSPS sampling rates |
Compared with CY8C26443-24SXI, CY8C26643-24SXI offers memory scalability while retaining identical peripheral configuration and toolchain compatibility; CY8C27443-24PVXI provides architectural modernization and USB capability but requires PSoC Creator migration and layout changes.
Availability
CY8C26443-24SXI is available at Aetrix Electronics and suitable for industrial sensor interface, motor control module, and smart power metering requiring stable component supply across long-lifecycle embedded programs.
Supply support for CY8C26443-24SXI 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 system-on-chip, memory, and USB-C solutions since 1982.
The PSoC™ 1 family-including CY8C26443-was designed to replace multiple discrete analog/digital components with a single configurable chip for cost-sensitive, medium-complexity embedded control applications.
FAQ
Is CY8C26443-24SXI still recommended for new designs?
No. Cypress explicitly marks CY8C26443-24SXI 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 production, repair, and obsolescence mitigation where redesign is impractical.
What development tools are required to program CY8C26443-24SXI?
PSoC Designer 5.x is the official IDE; it includes drag-and-drop User Modules, automatic code generation, and ISSP™ programming support. Required hardware includes MiniProg1 or MiniProg3 programmers. No third-party toolchains are officially supported due to proprietary configuration bitstream format.
Does CY8C26443-24SXI support true hardware UART with FIFO?
Yes. The CY8C26443-24SXI includes a full-duplex UART digital block with 8-byte receive/transmit buffers, programmable baud rate generator, and RTS/CTS flow control signals-enabling robust serial communication without CPU polling overhead.
Can the analog blocks operate simultaneously with independent clock domains?
Yes. Each analog PSoC block has individual clock select registers and can be assigned to different clock sources-including internal modulators, system clock dividers, or external sync signals-allowing concurrent ADC sampling, DAC output, and filter processing without timing conflict.
CY8C26443-24SXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-SOIC (0.295", 7.50mm 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:
CY8C26443-24SXI FAQ
1.How can I place an order for CY8C26443-24SXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C26443-24SXI 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 CY8C26443-24SXI reliable?
The price and inventory of CY8C26443-24SXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C26443-24SXI is usually 5 days.
3.What payment methods are accepted for CY8C26443-24SXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C26443-24SXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C26443-24SXI?
CY8C26443-24SXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C26443-24SXI 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 CY8C26443-24SXI?
For technical support, including CY8C26443-24SXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C26443-24SXI requirements.
6.How does Aetrix verify that CY8C26443-24SXI is sourced from the original manufacturer or authorized distributors?
All CY8C26443-24SXI 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 CY8C26443-24SXI meets industry standards.
7.What is the process for return or replacement of CY8C26443-24SXI?
All CY8C26443-24SXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C26443-24SXI, 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 CY8C26443-24SXI part is unused and in its original packaging.
Return procedure for CY8C26443-24SXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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