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Infineon Technologies CY8C26233-24SIT
- Part No.:
- CY8C26233-24SIT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY8C26233-24SIT.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,387
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Product details
Overview
CY8C26233-24SIT from Cypress Semiconductor is a programmable System-on-Chip (PSoC™) integrating an M8C 8-bit Harvard-architecture CPU, 8 KB Flash, 256 bytes SRAM, 12 configurable analog 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 control with mixed-signal flexibility in industrial sensor interfaces and motor control subsystems.
For engineers reviewing the CY8C26233-24SIT datasheet, CY8C26233-24SIT pinout, CY8C26233-24SIT application, or CY8C26233-24SIT 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 or migrating from CY8C25xxx series.
Technical Context
The device 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 register-based routing and clock selection.
Digital peripherals are instantiated through software-defined User Modules in PSoC Designer™, enabling runtime reconfiguration of UART baud rate, PWM resolution (up to 16-bit), timer capture/compare modes, and CRC polynomial - all without modifying hardware layout or firmware core logic.
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 memory with 50,000 erase/write cycles and partial update support |
| SRAM | 256 bytes data memory for variables and stack operations |
| Analog Blocks | 12 user-configurable analog PSoC blocks supporting ΔΣ ADC (11-bit), incremental ADC (12-bit), 9-bit DAC, PGA, and programmable filters |
| Digital Blocks | 8 digital PSoC blocks providing PWM, UART, SPI, CRC, and multi-mode timers including real-time clock and dead-band generation |
| Operating Voltage | 3.0 V to 5.25 V; down to 1.0 V using on-chip switch-mode voltage pump for ultra-low-power sleep |
| Temperature Range | -40 °C to +85 °C industrial grade operation |
Pinout & Package
Package: 24-pin SOIC (Small Outline Integrated Circuit), 300 mil width, surface-mount, 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 near pin |
| VSS | Ground reference | Digital and analog common ground plane connection point |
| XRES | Active-low reset input | Asynchronous reset signal; internal pull-up enables reset-free startup if left unconnected |
| XTAL1/XTAL2 | Cry stal oscillator terminals | Supports optional 32.768 kHz crystal for precision timing or PLL reference; not required for internal oscillator use |
| P0[0]–P0[7] | Port 0 bidirectional I/O | 8-bit general-purpose port with Schmitt-trigger inputs, 25 mA drive, interrupt-on-change, and analog-capable pins |
| P1[0]–P1[7] | Port 1 bidirectional I/O | 8-bit general-purpose port with identical digital features; subset supports analog input/output routing to PSoC blocks |
| SCLK/SI/SO | SPI interface signals | Hardware SPI master/slave interface; configurable as GPIO if unused |
| TXD/RXD | UART serial interface | Full-duplex asynchronous communication pins; mapped to P0[4]/P0[5] by default but relocatable via routing registers |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog Array | 12 independent analog blocks enable custom sensor front-ends (e.g., thermocouple amplification + cold-junction compensation + 12-bit ADC) without external components |
| In-System Serial Programming (ISSP™) | Field firmware updates via two-wire interface (XRES + SCLK), eliminating need for dedicated programming headers or JTAG adapters |
| Programmable Pin Drive Modes | Each I/O supports strong drive (25 mA), open-drain, high-Z, pull-up/pull-down - selectable per pin to match load requirements and reduce external biasing |
| Low-Voltage Detection (LVD) | User-configurable threshold (1.62 V to 4.62 V in 0.1 V steps) triggers interrupt or reset to prevent erratic operation during brown-out conditions |
| EEPROM Emulation | Up to 2,304 bytes of non-volatile data storage implemented in Flash with wear-leveling algorithm managed by PSoC Designer™ library |
Applications
| Industrial Sensor Interface | Motor Control Subsystem |
|---|---|
Use Scenario: Monitoring temperature, pressure, and current in HVAC controllers using analog sensors with varying output ranges and noise profiles. IC Role / Device Role / Timing Role: Configurable analog front-end (PGA + ΔΣ ADC) and digital processing unit performing sensor linearization, calibration lookup, and Modbus RTU transmission. Use Value: Eliminates discrete op-amps, ADCs, and level-shifting logic; reduces BOM count by ≥7 components while maintaining 12-bit effective resolution across 4–20 mA and 0–10 V inputs. | Use Scenario: Closed-loop speed and position control of BLDC motors in factory automation actuators with integrated overcurrent protection. IC Role / Device Role / Timing Role: Real-time PWM generator with dead-band insertion, current-sense amplifier interface, and fault-handling ISR executing within 2 µs latency. Use Value: Enables precise 16-bit PWM timing synchronized to hall-effect encoder edges; integrates analog current sensing and digital commutation logic in single chip. |
| Smart Lighting Dimming Module | Legacy Protocol Bridge |
Use Scenario: DALI-compatible LED driver with adaptive dimming curves, thermal derating, and local ambient light compensation. IC Role / Device Role / Timing Role: Mixed-signal controller managing DALI physical layer (UART + current sink), ambient light ADC, thermal sensor interface, and PWM dimming output. Use Value: Supports DALI v2 compliance with <1% THD dimming waveforms; analog PGA gain adjustment compensates for photodiode aging without firmware update. | Use Scenario: Converting RS-232 serial commands from legacy building management systems into I²C or SPI packets for modern sensor nodes. IC Role / Device Role / Timing Role: Protocol translation engine with UART receive buffer, command parser, and configurable I²C master timing (100/400 kHz). Use Value: Maintains backward compatibility without FPGA or external microcontroller; UART-to-I²C timing jitter <50 ns ensures reliable sensor register access. |
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 |
|---|---|---|---|
| CY8C27443-24PVXI | Successor PSoC 1 device with 16 KB Flash, enhanced analog blocks (12-bit SAR ADC), and improved ISSP™ reliability; requires updated PSoC Designer™ version 5.0+ | Supports higher-resolution sensor acquisition and larger firmware images; pin-compatible but requires PCB layout review for VDDIO/VDDD separation | Recommended for new designs requiring extended memory or higher analog accuracy; not drop-in due to toolchain and power domain changes |
| CY8C3246F-LQI-BT | PSoC 3 device with 8051 core, 32 KB Flash, capacitive sensing IP, and USB interface; incompatible toolchain (PSoC Creator™) | Enables touch HMI integration and host connectivity; lacks direct replacement for legacy analog block routing syntax | Consider only when adding USB or CapSense™ functionality justifies full redesign and tool migration |
Compared with CY8C26233-24SIT, CY8C27443-24PVXI offers greater Flash headroom and analog precision for scaling legacy firmware, while CY8C3246F-LQI-BT shifts to a different architecture and ecosystem - making the former a practical migration path and the latter a platform-level re-architecting decision.
Availability
CY8C26233-24SIT is available at Aetrix Electronics and suitable for industrial sensor interface, motor control subsystem, and smart lighting dimming module applications requiring stable component supply and long-term obsolescence management.
Supply support for CY8C26233-24SIT 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.
CY8C26233 belongs to the PSoC™ 1 family - designed specifically to replace discrete analog/digital component combinations in cost-sensitive, medium-complexity embedded control applications with field-programmable flexibility.
FAQ
Is CY8C26233-24SIT still recommended for new designs?
No. Cypress explicitly marks CY8C26233-24SIT as "Not Recommended for New Designs" in its official datasheet (Rev. *C, May 2005), directing users to the CY8C27xxx series. However, it remains actively supported for legacy design maintenance, repair, and obsolescence-sensitive production runs with documented lifecycle commitments from authorized distributors.
What development tools are required for CY8C26233-24SIT?
PSoC Designer™ v4.4 or later is mandatory - no support exists in PSoC Creator™ or ModusToolbox™. The IDE provides graphical User Module placement, automatic register configuration, and ISSP™ programming via MiniProg1 or compatible programmers. Legacy Windows XP/Vista drivers are required; modern OS support depends on virtual machine or compatibility mode.
Does CY8C26233-24SIT support USB or Bluetooth connectivity?
No. CY8C26233-24SIT lacks native USB PHY, transceiver, or Bluetooth radio. It supports UART, SPI, and I²C for interfacing with external USB-to-UART bridges (e.g., CP2102) or BLE modules (e.g., RN4871), but all protocol handling, packet assembly, and RF timing must be implemented externally or in host firmware.
Can CY8C26233-24SIT operate below 3.0 V?
Yes - down to 1.0 V - using its on-chip switch-mode voltage pump (SMVP) to boost internal core voltage. This mode disables analog blocks and limits CPU speed to ≤8 MHz, but enables ultra-low-power sleep states with RTC wake-up and GPIO interrupt retention, verified in the device's Electrical Characteristics table (Section 13.2 of DS38-12010).
CY8C26233-24SIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 20-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:
- 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:
- Surface Mount
- Supplier Device Package:
CY8C26233-24SIT FAQ
1.How can I place an order for CY8C26233-24SIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C26233-24SIT 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 CY8C26233-24SIT reliable?
The price and inventory of CY8C26233-24SIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C26233-24SIT is usually 5 days.
3.What payment methods are accepted for CY8C26233-24SIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C26233-24SIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C26233-24SIT?
CY8C26233-24SIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C26233-24SIT 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 CY8C26233-24SIT?
For technical support, including CY8C26233-24SIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C26233-24SIT requirements.
6.How does Aetrix verify that CY8C26233-24SIT is sourced from the original manufacturer or authorized distributors?
All CY8C26233-24SIT 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 CY8C26233-24SIT meets industry standards.
7.What is the process for return or replacement of CY8C26233-24SIT?
All CY8C26233-24SIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C26233-24SIT, 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 CY8C26233-24SIT part is unused and in its original packaging.
Return procedure for CY8C26233-24SIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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