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Infineon Technologies CY8C26443-24SIT
- Part No.:
- CY8C26443-24SIT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY8C26443-24SIT.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,729
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Product details
Overview
CY8C26443-24SIT from Cypress Semiconductor is a programmable System-on-Chip (PSoC™) integrating an M8C 8-bit Harvard architecture CPU, 8 KB Flash program memory, 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 (supporting UART, SPI, PWM, and CRC). It operates at up to 24 MHz with internal 24/48 MHz oscillator and supports 3.0–5.25 V supply in SOIC-28 package, used in embedded sensor interface and industrial control subsystems.
For engineers reviewing the CY8C26443-24SIT datasheet, CY8C26443-24SIT pinout, CY8C26443-24SIT application, or CY8C26443-24SIT equivalent, key selection criteria include on-chip analog configurability, Flash endurance (50,000 erase/write cycles), ISSP™ in-system programming support, and mixed-signal peripheral integration without external components.
Technical Context
The device implements a fully static CMOS architecture with dual-clock domains: one for digital logic (driven by internal 24/48 MHz oscillator or external 32.768 kHz crystal + PLL), and another for analog blocks (with dedicated clock select register and synchronization logic). Analog functionality is partitioned across 12 switch-capacitor and continuous-time PSoC blocks, each independently configurable via PSoC Designer GUI.
Digital peripherals are organized into two banks of 4 blocks each, supporting time-critical functions including real-time clock, PWM with deadband, full-duplex UART, and hardware CRC generation. Memory-mapped I/O registers enable bit-level manipulation of GPIO pins, with interrupt-on-change capability and programmable drive strength (25 mA logic / 40 mA analog).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture with 24 MHz max clock and 8×8 multiply/32-bit accumulate unit |
| Flash Memory | 8 KB program storage with 50,000 erase/write cycles and partial update capability |
| SRAM | 256 bytes data memory, register-speed accessible for critical variables and stack |
| Analog Blocks | 12 user-configurable blocks supporting Delta-Sigma ADC (11-bit), SAR ADC (8-bit), incremental ADC (12-bit), DAC (9-bit), PGA, and filters |
| Digital Blocks | 8 programmable blocks providing UART, SPI, PWM, timers, CRC, and logic functions |
| Operating Voltage | 3.0–5.25 V supply range; down to 1.0 V using on-chip switch-mode voltage pump |
| Temperature Range | -40°C to +85°C industrial grade operation with on-chip voltage reference and LVD detection |
Pinout & Package
Package: 28-pin SOIC (SOIC-28, 300 mil width), RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main 3.0–5.25 V supply for core and I/O; decoupling required per datasheet layout guidelines |
| VSS | Ground reference | Digital and analog ground common point; separate analog/digital grounding recommended |
| XIN/XOUT | External crystal oscillator terminals | Supports 32.768 kHz crystal for precision timing; optional when using internal oscillator |
| XTAL | Internal oscillator output | Provides 24/48 MHz clock source; no external components needed for basic operation |
| P0[0]–P0[7] | Port 0 bidirectional I/O | 8-bit port with Schmitt-trigger inputs, programmable pull-up/down, and interrupt-on-change |
| P1[0]–P1[3] | Port 1 bidirectional I/O | 4-bit port supporting analog output drive up to 40 mA and configurable digital drive strength |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; debounced externally for robust system startup |
| SWD | Serial Wire Debug interface | 2-pin debug port for programming and real-time debugging via ISSP™ protocol |
Key Features
| Feature | Design Value |
|---|---|
| Configurable analog array | 12 independent PSoC blocks enable custom ADC/DAC/filter/PGA configurations without external components |
| GUI-based design flow | PSoC Designer software provides drag-and-drop peripheral placement and automatic code generation-no low-level register coding required |
| In-system serial programming | ISSP™ allows field firmware updates via SWD pins without removing device from PCB |
| Low-voltage operation | On-chip switch-mode voltage pump enables functional operation down to 1.0 V supply for battery-constrained designs |
| EEPROM emulation | Up to 2,304 bytes of nonvolatile data storage emulated in Flash with wear-leveling algorithms |
Applications
| Industrial Sensor Interface | Smart Home Controller |
|---|---|
Use Scenario: Reading thermistor, RTD, and pressure transducer signals in factory automation nodes. IC Role / Device Role / Timing Role: Configurable Delta-Sigma ADC and PGA condition analog sensor outputs; internal 24 MHz clock drives real-time sampling and local decision logic. Use Value: Eliminates external signal conditioning ICs and reduces BOM count while maintaining 11-bit measurement resolution. | Use Scenario: Central hub managing Zigbee/RF433 wireless sensor network and local LED/LCD status display. IC Role / Device Role / Timing Role: Digital PSoC blocks implement UART for radio interface and PWM for dimmable lighting; analog blocks drive LCD contrast and sense button voltage dividers. Use Value: Single-chip integration replaces discrete MCU + ADC + DAC + display driver, reducing PCB area and power consumption. |
| Medical Diagnostic Instrument | Automotive Body Control Module |
Use Scenario: Portable ECG front-end acquiring biopotential signals with high common-mode rejection. IC Role / Device Role / Timing Role: Continuous-time analog PSoC blocks configured as instrumentation amplifier and 50/60 Hz notch filter; synchronized sampling via internal clock domain. Use Value: On-chip analog filtering avoids external op-amp stages and improves noise immunity in battery-powered devices. | Use Scenario: Door lock actuator control with position feedback and fault monitoring in 12 V automotive systems. IC Role / Device Role / Timing Role: Digital blocks generate PWM for motor drive and decode Hall-effect encoder pulses; analog comparators monitor current sense and overvoltage conditions. Use Value: Integrated analog comparators and high-drive GPIO eliminate discrete protection circuitry and reduce system response latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C26643-24SXI | 16 KB Flash, 12 KB EEPROM emulation, same pinout and peripheral set | Better suited for firmware-over-the-air updates and larger configuration tables | Select when >8 KB Flash or enhanced nonvolatile data retention is required |
| CY8C27443-24PVXI | Newer PSoC 3 generation, 8051 core, 16 KB Flash, USB interface, different package (SSOP-28) | Requires board redesign but adds USB connectivity and higher analog performance | Select for new designs needing USB host/device capability or improved ADC SNR |
Compared with CY8C26443-24SIT, CY8C26643-24SXI offers expanded memory for complex state machines, while CY8C27443-24PVXI delivers architectural upgrades (USB, 8051) at the cost of migration effort and package incompatibility.
Availability
CY8C26443-24SIT is available at Aetrix Electronics and suitable for industrial sensor interface, smart home controller, medical diagnostic instrument, and automotive body control module applications requiring stable component supply and long-term lifecycle support.
Supply support for CY8C26443-24SIT 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.
CY8C26443 belongs to the PSoC™ 1 family, designed to replace multiple discrete analog/digital components with a single configurable chip for cost-sensitive, medium-complexity embedded systems.
FAQ
Is CY8C26443-24SIT still recommended for new designs?
No. Cypress explicitly marks this part as "Not Recommended for New Designs" in its official documentation, advising migration to the CY8C27xxx series (PSoC 3) or later generations. However, it remains supported for legacy production and repair, with full datasheet, toolchain, and programming compatibility maintained through PSoC Designer v5.4.
What development tools are required to program CY8C26443-24SIT?
PSoC Designer v5.4 (or earlier compatible versions) is the official IDE, paired with a MiniProg1 or MiniProg3 programmer/debugger. The software provides graphical peripheral configuration, automatic C code generation, and ISSP™ programming via SWD pins-no JTAG adapter is needed.
Does CY8C26443-24SIT support true hardware UART with automatic baud rate generation?
Yes. Its digital PSoC blocks include a full-duplex UART module with programmable baud rate generator, TX/RX FIFOs, and framing error detection. Baud rates are derived from the system clock or dedicated UART clock divider, enabling reliable RS-232 or TTL-level serial communication without CPU overhead.
Can analog PSoC blocks be used simultaneously for ADC and DAC functions?
Yes. The 12 analog PSoC blocks operate independently; for example, Block 0 can be configured as a Delta-Sigma ADC while Block 5 runs as a 9-bit DAC, sharing only the analog reference voltage and clock resources. Resource conflicts are resolved automatically during PSoC Designer compilation.
CY8C26443-24SIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Series:
- PSOC™1 CY8C26xxx
- Packaging:
- Tape & Reel (TR)
- 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:
CY8C26443-24SIT FAQ
1.How can I place an order for CY8C26443-24SIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C26443-24SIT 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 CY8C26443-24SIT reliable?
The price and inventory of CY8C26443-24SIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C26443-24SIT is usually 5 days.
3.What payment methods are accepted for CY8C26443-24SIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C26443-24SIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C26443-24SIT?
CY8C26443-24SIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C26443-24SIT 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 CY8C26443-24SIT?
For technical support, including CY8C26443-24SIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C26443-24SIT requirements.
6.How does Aetrix verify that CY8C26443-24SIT is sourced from the original manufacturer or authorized distributors?
All CY8C26443-24SIT 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 CY8C26443-24SIT meets industry standards.
7.What is the process for return or replacement of CY8C26443-24SIT?
All CY8C26443-24SIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C26443-24SIT, 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 CY8C26443-24SIT part is unused and in its original packaging.
Return procedure for CY8C26443-24SIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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