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Infineon Technologies CY8C26233-24PXI
- Part No.:
- CY8C26233-24PXI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
CY8C26233-24PXI.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,115
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Product details
Overview
CY8C26233-24PXI from Cypress Semiconductor is a programmable System-on-Chip (PSoC™) integrating an M8C 8-bit Harvard-architecture CPU, 8K Flash, 256B SRAM, 12 configurable analog PSoC blocks (including ΔΣ ADC, DAC, PGA, filters), and 8 digital PSoC blocks (PWM, UART, SPI, timers). It operates at up to 24 MHz, supports 3.0–5.25 V supply, and targets embedded sensor interface and control applications in industrial and consumer systems.
For engineers reviewing the CY8C26233-24PXI datasheet, CY8C26233-24PXI pinout, CY8C26233-24PXI application, or CY8C26233-24PXI equivalent, key selection considerations include its on-chip analog configurability, ISSP™ in-system programming capability, 24-pin SOIC package, and legacy PSoC Designer toolchain dependency - critical for maintaining legacy designs where migration to CY8C27xxx is not feasible.
Technical Context
The device implements a fully static CMOS architecture with internal 24/48 MHz oscillator (±2.5%), optional 32.768 kHz crystal input for PLL-based precision timing, and dual-clock domains enabling independent analog/digital clocking. Its analog array supports simultaneous ΔΣ and incremental ADC operation with programmable gain amplifiers and switch-capacitor filters.
Digital functionality includes four multipurpose timers (with PWM and deadband), full-duplex UART, SPI master/slave, CRC modules, and GPIO interrupt-on-change. Memory subsystem features 50,000 Flash erase/write cycles, EEPROM emulation (2,304 bytes), and partial Flash update support via ISSP™.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture with 24 MHz max clock - enables deterministic real-time control without cache latency. |
| Flash Memory | 8 KB Flash program memory - sufficient for medium-complexity firmware with analog/digital peripheral configuration code. |
| SRAM | 256 bytes data RAM - supports stack, variables, and small buffers for sensor acquisition and control loops. |
| Analog Blocks | 12 user-configurable analog PSoC blocks - provide mixed-signal flexibility including ΔΣ ADC (11-bit), DAC (9-bit), PGA, and low-pass filters. |
| Digital Blocks | 8 digital PSoC blocks - deliver PWM, UART, SPI, CRC, and timer functions without external components. |
| Operating Voltage | 3.0 V to 5.25 V - compatible with standard 3.3 V and 5 V logic systems and legacy industrial power rails. |
| Temperature Range | –40 °C to +85 °C - qualified for industrial ambient environments without derating. |
Pinout & Package
Package: 24-pin SOIC (Small Outline Integrated Circuit), 300 mil width, surface-mount, JEDEC MS-013AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply | Main 3.0–5.25 V supply input for core and I/O; requires local decoupling. |
| VSS | GND | Digital ground reference; must be connected to system ground plane. |
| XIN / XOUT | Crystal Oscillator Interface | Supports optional 32.768 kHz crystal for precision timing; XIN is input, XOUT is output. |
| P0[0]–P0[7] | General-Purpose I/O | 8-bit port with Schmitt-trigger inputs, 25 mA drive, interrupt-on-change, and analog-capable pins. |
| P1[0]–P1[7] | General-Purpose I/O | 8-bit port with same digital features as P0; some pins support analog routing to PSoC blocks. |
| P2[0]–P2[3] | General-Purpose I/O | 4-bit port; P2[0]/P2[1] support dedicated UART RX/TX; P2[2]/P2[3] support SPI SCLK/MISO. |
| RESET | Active-Low Reset Input | Asynchronous reset signal; internal pull-up; debounced by external RC or microcontroller. |
| SWD | In-System Programming | Serial Wire Debug pin for ISSP™ programming and debugging via PSoC Programmer hardware. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog Array | 12 independent analog PSoC blocks enable custom sensor front-ends (e.g., thermocouple conditioning + ΔΣ ADC + digital filter) without external op-amps or ADCs. |
| Programmable Digital Peripherals | 8 digital blocks allow concurrent UART, SPI, PWM generation, and CRC calculation - reducing MCU overhead and PCB component count. |
| In-System Serial Programming (ISSP™) | Enables field firmware updates via SWD pin using low-cost programmer; supports partial Flash rewrites without full chip erase. |
| Flexible Clocking | Internal 24/48 MHz oscillator eliminates need for external crystal in cost-sensitive designs; optional 32.768 kHz crystal supports RTC and PLL-based timing accuracy. |
| EEPROM Emulation | 2,304 bytes of Flash-based nonvolatile storage emulate EEPROM behavior - retains calibration data across power cycles without external memory. |
Applications
| Industrial Sensor Node | Consumer Appliance Control |
|---|---|
Use Scenario: Monitoring temperature, pressure, and motor current in HVAC controllers with local closed-loop response. IC Role / Device Role / Timing Role: Central mixed-signal controller managing analog sensor acquisition, PWM fan/motor drive, and UART communication to host MCU. Use Value: Integrates 11-bit ΔΣ ADC, PGA, and 4-channel PWM in one die - eliminates discrete signal chain components and reduces BOM cost by ~35%. |
Use Scenario: Smart washing machine control panel with touch sensing, water level monitoring, and motor speed regulation. IC Role / Device Role / Timing Role: Primary system controller handling capacitive touch I/O, incremental ADC for pressure transducer, and variable-frequency PWM for brushless motor. Use Value: Configurable analog blocks support direct connection of unconditioned sensors; no external op-amp or comparator required. |
| Medical Instrument Front-End | Automotive Body Control Module |
Use Scenario: Portable blood glucose meter requiring low-noise analog front-end and battery-efficient operation. IC Role / Device Role / Timing Role: Signal conditioner and measurement engine - digitizing electrochemical sensor output via programmable gain and ΔΣ conversion. Use Value: On-chip PGA and 11-bit ΔΣ ADC achieve <10 µV RMS noise floor at 10 sps - meets ISO 15197 accuracy requirements without external filtering. |
Use Scenario: Dashboard lighting and mirror position control in entry-level vehicles with LIN bus integration. IC Role / Device Role / Timing Role: Secondary controller interfacing with LIN transceiver (via UART), driving LED strings (PWM), and reading potentiometer inputs (incremental ADC). Use Value: Single-chip solution replaces MCU + ADC + PWM driver + LIN interface IC - reduces footprint and qualification effort for AEC-Q100 Class 2 compliance. |
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 |
|---|---|---|---|
| CY8C26443-24PVXI | 16 KB Flash, 4 KB SRAM, 24-pin SSOP; adds two extra analog blocks and enhanced digital resources. | Supports more complex sensor fusion and larger firmware; same pinout but different package (SSOP vs SOIC). | Select when additional memory or analog channel count is required without changing board layout. |
| CY8C27443-24PVXI | Next-generation PSoC 3-compatible core (8051), 32 KB Flash, USB interface, higher performance; not pin- or code-compatible. | Enables USB connectivity and faster processing but requires full firmware and toolchain migration. | Choose only for new designs targeting long-term support and USB integration; not suitable for drop-in replacement. |
Compared with CY8C26443-24PVXI, CY8C26233-24PXI offers lower memory and analog resource count in a mature, cost-optimized SOIC package; versus CY8C27443-24PVXI, it avoids architectural discontinuity but lacks USB and modern toolchain support - making it viable only for maintenance of existing PSoC Designer-based systems.
Availability
CY8C26233-24PXI is available at Aetrix Electronics and suitable for industrial sensor nodes, consumer appliance control, medical instrument front-ends, and automotive body control modules requiring stable component supply and legacy design continuity.
Supply support for CY8C26233-24PXI 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 connectivity, and memory technologies.
CY8C26233 belongs to the PSoC™ 1 family - designed specifically to replace discrete analog/digital components with user-configurable on-die peripherals for cost-sensitive, medium-complexity embedded control applications.
FAQ
Is CY8C26233-24PXI still recommended for new designs?
No - Cypress explicitly marks this device as "Not Recommended for New Designs" in its official documentation, advising migration to the CY8C27xxx series. However, Aetrix Electronics continues to supply CY8C26233-24PXI for legacy design maintenance, repair, and obsolescence mitigation where redesign is impractical or cost-prohibitive.
What development tools are required for CY8C26233-24PXI?
The original PSoC Designer IDE (v5.4 or earlier) is mandatory - it provides graphical User Module selection, automatic code generation, and ISSP™ programming support. Modern tools like PSoC Creator or ModusToolbox do not support this device. Required hardware includes the MiniProg1 or MiniProg3 programmer/debugger with SOIC-24 ZIF socket adapter.
Does CY8C26233-24PXI support USB or CAN interfaces?
No - CY8C26233-24PXI has no native USB or CAN physical layer or protocol engine. It supports UART, SPI, and I²C for serial communication. USB or CAN functionality would require external transceivers and software protocol stacks - which are not supported in the PSoC Designer toolset for this device family.
What is the maximum operating frequency of the internal oscillator?
The internal main oscillator runs at 24 MHz nominal (with ±2.5% tolerance over voltage and temperature), and can be optionally doubled to 48 MHz using the internal PLL. This 48 MHz clock feeds the CPU and digital peripherals, while analog blocks may use independently configured lower-frequency clocks for noise reduction.
CY8C26233-24PXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- 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:
- 16
- Program Memory Size:
- 8KB (8K 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:
- Through Hole
- Supplier Device Package:
CY8C26233-24PXI FAQ
1.How can I place an order for CY8C26233-24PXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C26233-24PXI 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 CY8C26233-24PXI reliable?
The price and inventory of CY8C26233-24PXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C26233-24PXI is usually 5 days.
3.What payment methods are accepted for CY8C26233-24PXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C26233-24PXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C26233-24PXI?
CY8C26233-24PXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C26233-24PXI 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 CY8C26233-24PXI?
For technical support, including CY8C26233-24PXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C26233-24PXI requirements.
6.How does Aetrix verify that CY8C26233-24PXI is sourced from the original manufacturer or authorized distributors?
All CY8C26233-24PXI 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 CY8C26233-24PXI meets industry standards.
7.What is the process for return or replacement of CY8C26233-24PXI?
All CY8C26233-24PXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C26233-24PXI, 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 CY8C26233-24PXI part is unused and in its original packaging.
Return procedure for CY8C26233-24PXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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