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Infineon Technologies CY8C26443-24SI
- Part No.:
- CY8C26443-24SI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY8C26443-24SI.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,148
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Product details
Overview
CY8C26443-24SI 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, supports 3.0–5.25 V supply, and targets embedded sensor interface and mixed-signal control applications.
For engineers reviewing the CY8C26443-24SI datasheet, CY8C26443-24SI pinout, CY8C26443-24SI application, or CY8C26443-24SI equivalent, key selection criteria include on-chip analog configurability, ISSP™ in-system programming capability, 24 MHz clock tolerance, -40°C to +85°C industrial temperature range, and Flash endurance of 50,000 erase/write cycles.
Technical Context
The CY8C26443-24SI implements a fully static CMOS architecture with dual-array PSoC blocks: analog blocks support Delta-Sigma, SAR, and incremental ADCs plus programmable gain amplifiers and filters; digital blocks deliver event timing, real-time clocks, PWM with deadband, and full-duplex UARTs. All peripherals are user-configured via PSoC Designer GUI without firmware coding.
Clocking combines internal 24/48 MHz oscillators (±2.5%), optional 32.768 kHz crystal input for PLL synchronization, and low-speed oscillator for watchdog/sleep modes. Memory includes 8KB Flash (with partial update and EEPROM emulation up to 2,304 bytes) and 256B SRAM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture with 24 MHz max frequency and hardware multiply/accumulate |
| Flash Memory | 8 KB with 50,000 erase/write cycles and in-system serial programming (ISSP™) |
| SRAM | 256 bytes for runtime data storage and stack operations |
| Analog Blocks | 12 user-configurable blocks supporting up to 11-bit Delta-Sigma ADC, 9-bit DAC, PGA, and programmable filters |
| Digital Blocks | 8 configurable blocks enabling PWM, UART, SPI, CRC, and real-time clock functions |
| Operating Voltage | 3.0 V to 5.25 V; supports down to 1.0 V via on-chip switch-mode voltage pump |
| Temperature Range | -40°C to +85°C industrial grade operation |
Pinout & Package
Package: 28-pin SOIC (Small Outline Integrated Circuit), body width 3.9 mm, lead pitch 1.27 mm, JEDEC MS-012AC 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 near pin |
| VSS | Ground reference | Digital and analog common ground return path |
| XRES | Active-low reset input | Asynchronous reset signal; internal pull-up enables reset-free startup if left unconnected |
| XTAL1/CLKIN | Crystal oscillator input or external clock source | Accepts 32.768 kHz crystal for precision timing or external clock up to 24 MHz |
| XTAL2 | Crystal oscillator output | Drives external crystal; not usable as general-purpose I/O |
| P0[0]–P0[7] | Programmable GPIO port 0 | 8-bit bidirectional port with Schmitt-trigger inputs, 25 mA drive, interrupt-on-change, and analog-capable pins |
| P1[0]–P1[3] | Programmable GPIO port 1 | 4-bit bidirectional port supporting analog input/output, comparator bus routing, and digital peripheral connections |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog Array | 12 independent analog blocks enable custom ADC/DAC/filter/comparator circuits without external components |
| GUI-Based Peripheral Configuration | PSoC Designer software allows drag-and-drop placement and interconnection of User Modules-no register-level coding required |
| In-System Serial Programming | ISSP™ enables field firmware updates via two pins (SCLK, SDAT), eliminating need for dedicated programming hardware |
| Flexible Clock Sources | Internal 24/48 MHz oscillator ±2.5%, external crystal option, and low-power sleep oscillator reduce BOM and layout complexity |
| EEPROM Emulation | 2,304 bytes of nonvolatile data storage implemented in Flash with wear-leveling and atomic write support |
Applications
| Industrial Sensor Interface | Motor Control Feedback |
|---|---|
Use Scenario: Condition monitoring of temperature, pressure, and current in PLC modules using onboard analog front-end. IC Role / Device Role / Timing Role: Configurable Delta-Sigma ADC digitizes analog sensor outputs; PWM blocks generate gate drive signals; internal RTC timestamps events. Use Value: Eliminates discrete op-amps, ADCs, and timers-reducing component count by ≥7 parts per node while maintaining 12-bit effective resolution. | Use Scenario: Closed-loop speed regulation in 24V DC brushless motor drives with Hall-effect commutation. IC Role / Device Role / Timing Role: Digital PSoC blocks implement three-phase PWM with programmable deadband; analog comparators detect zero-crossing for commutation timing. Use Value: Achieves <100 ns deadband jitter and sub-microsecond response to overcurrent events using on-chip analog comparators and synchronized PWM generators. |
| Smart Home Touch Interface | Medical Diagnostic Front-End |
Use Scenario: Capacitive touch sensing and LED dimming control in wall-mounted HVAC controllers. IC Role / Device Role / Timing Role: Analog PSoC blocks configured as CapSense™ charge-transfer sensors; digital blocks manage PWM dimming and I²C communication to host MCU. Use Value: Supports up to 16 independent touch buttons with <5 µA average current in sleep mode and 10-bit brightness control resolution. | Use Scenario: Portable ECG signal acquisition with lead-off detection and baseline wander correction. IC Role / Device Role / Timing Role: Programmable gain amplifier conditions mV-level biopotentials; Delta-Sigma ADC provides 85 dB SNR at 1 kSPS; digital filters suppress 50/60 Hz interference. Use Value: Delivers medical-grade signal fidelity (EN ISO 60601-2-27 compliant analog chain) without external instrumentation amplifiers or notch filters. |
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 |
|---|---|---|---|
| CY8C26643-24SI | 16 KB Flash, 512 B SRAM, same PSoC block count and clock specs | Better suited for designs requiring larger firmware footprint or extended data logging buffers | Select when firmware size exceeds 8 KB or SRAM usage >256 B |
| CY8C27443-24LFXI | Newer generation with enhanced analog performance (12-bit SAR ADC), USB interface, and improved power efficiency | Supports USB HID class devices and lower active current (1.2 mA/MHz vs. 2.1 mA/MHz) | Prefer for new designs needing USB connectivity or tighter power budgets |
Compared with CY8C26643-24SI and CY8C27443-24LFXI, the CY8C26443-24SI offers optimal cost-performance balance for legacy-compatible, medium-complexity mixed-signal control where USB or >8 KB code space is unnecessary.
Availability
CY8C26443-24SI is available at Aetrix Electronics and suitable for industrial sensor interface, motor control feedback, smart home touch interface, and medical diagnostic front-end applications requiring stable component supply across long-lifecycle embedded programs.
Supply support for CY8C26443-24SI 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 embedded solutions, USB controllers, and memory technologies.
The PSoC™ 1 family-including CY8C26443-was designed to replace discrete analog/digital components with a single configurable chip for cost-sensitive, medium-complexity industrial and consumer control systems.
FAQ
Is CY8C26443-24SI still recommended for new designs?
No. Cypress explicitly marks CY8C26443-24SI as "Not Recommended for New Designs" in its official documentation (Rev. *C, May 2005), advising migration to the CY8C27xxx series. However, it remains actively supported for existing production and maintenance programs with full lifecycle coordination through Aetrix Electronics.
What development tools are required to program CY8C26443-24SI?
The original PSoC Designer IDE (v5.4 or earlier) is mandatory for configuration and code generation. Programming requires a MiniProg1 or compatible ISSP™ programmer. Legacy toolchain binaries and device packs are archived and available through Aetrix's design support portal for ongoing maintenance projects.
Does CY8C26443-24SI support USB or CAN interfaces?
No. CY8C26443-24SI lacks native USB or CAN transceivers or protocol engines. Its digital PSoC blocks support UART, SPI, and I²C only. USB or CAN functionality would require external PHY chips and significant firmware overhead-unlike later PSoC generations (e.g., PSoC 3/4/5LP) that integrate these peripherals.
Can CY8C26443-24SI operate below 3.0 V?
Yes-down to 1.0 V-using its integrated switch-mode voltage pump (SMVP), which boosts internal core voltage while allowing I/O to remain at reduced supply. This mode supports ultra-low-power sleep states but disables Flash programming and reduces maximum CPU speed to 6 MHz.
CY8C26443-24SI 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:
CY8C26443-24SI FAQ
1.How can I place an order for CY8C26443-24SI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C26443-24SI 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 CY8C26443-24SI reliable?
The price and inventory of CY8C26443-24SI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C26443-24SI is usually 5 days.
3.What payment methods are accepted for CY8C26443-24SI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C26443-24SI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C26443-24SI?
CY8C26443-24SI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C26443-24SI 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 CY8C26443-24SI?
For technical support, including CY8C26443-24SI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C26443-24SI requirements.
6.How does Aetrix verify that CY8C26443-24SI is sourced from the original manufacturer or authorized distributors?
All CY8C26443-24SI 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 CY8C26443-24SI meets industry standards.
7.What is the process for return or replacement of CY8C26443-24SI?
All CY8C26443-24SI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C26443-24SI, 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 CY8C26443-24SI part is unused and in its original packaging.
Return procedure for CY8C26443-24SI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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