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Infineon Technologies CY8C27443-24SXI
- Part No.:
- CY8C27443-24SXI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY8C27443-24SXI.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:843
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Product details
Overview
CY8C27443-24SXI from Cypress Semiconductor is a PSoC® 1 programmable system-on-chip featuring an M8C 8-bit Harvard architecture CPU running at up to 24 MHz, 16 KB flash, 256 bytes SRAM, and configurable analog/digital blocks-including 12 analog and 8 digital PSoC blocks-for mixed-signal embedded control in industrial sensor interfaces and motor control systems.
For engineers reviewing the CY8C27443-24SXI datasheet, CY8C27443-24SXI pinout, CY8C27443-24SXI application, or CY8C27443-24SXI equivalent, key selection criteria include its 24 MHz max clock speed, 3.0–5.25 V operating voltage range, 28-pin SOIC package, integrated 14-bit ADC capability, and support for dual UART/SPI/I²C peripherals in a single chip.
Technical Context
The CY8C27443-24SXI implements a fixed-function M8C core with interrupt-driven real-time execution, supported by a 24 MHz internal main oscillator (±2.5% accuracy) and optional 32.768 kHz crystal input for RTC or PLL-based clock synthesis. Its digital system uses eight 8-bit PSoC blocks combinable into 8–32-bit timers, PWMs, CRC, and PRS modules.
Analog functionality is delivered via twelve rail-to-rail configurable analog blocks supporting up to 14-bit SAR ADCs, 9-bit DACs, PGAs, and programmable filters-each routed through global analog interconnect to eight standard GPIO analog inputs and four restricted analog inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max operation - enables deterministic real-time control with 4 MIPS throughput |
| Flash Memory | 16 KB program flash with 50,000 erase/write cycles - supports field firmware updates and IP protection via 64-byte block locking |
| SRAM | 256 bytes data RAM - sufficient for small state machines and sensor buffer storage in ultra-low-footprint designs |
| Analog Blocks | 12 configurable analog PSoC blocks - deliver ADC, DAC, PGA, comparator, and filter functions without external components |
| Digital Blocks | 8 digital PSoC blocks - combine to form dual UARTs, multiple SPI masters/slaves, 8–32-bit timers, and CRC/PRS engines |
| Operating Voltage | 3.0 V to 5.25 V - compatible with legacy 3.3 V and 5 V logic domains; supports down to 1.0 V via on-chip switch-mode pump |
| Temperature Range | –40 °C to +85 °C - qualified for industrial-grade operation without derating |
Pinout & Package
Package: 28-pin SOIC (Small Outline Integrated Circuit), 300 mil width, JEDEC MS-012AC compliant, surface-mountable with standard reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main 3.0–5.25 V supply for core, analog, and digital systems |
| VSS | Ground reference | Common return path for all internal circuits and I/O drivers |
| P0[0]–P0[7] | Port 0 GPIO | Eight bidirectional pins with configurable drive modes (pull-up/down, open-drain, strong, high-Z) and interrupt capability |
| P1[0]–P1[7] | Port 1 GPIO | Eight additional GPIOs supporting analog input routing, 25 mA sink / 10 mA source, and analog output capability |
| P2[0]–P2[3] | Port 2 GPIO | Four pins with full digital/analog routing access; P2[0]/P2[1] support crystal oscillator connections (ECO) |
| XRES | External reset input | Active-low asynchronous reset pin; internally pulled up, accepts 1.8 V–VDD logic levels |
| SWD | Serial wire debug | Two-wire debug interface for programming and emulation using MiniProg3 or ICE-Cube |
Key Features
| Feature | Design Value |
|---|---|
| In-system serial programming (ISSP) | Enables field firmware updates via SWD or dedicated ISSP pins without removing the device from PCB |
| Configurable analog blocks | Twelve independent opamp-based blocks allow simultaneous ADC, PGA, and filter implementation without external passive components |
| Global digital interconnect | Allows any digital block output to route to any GPIO or other block input - eliminates fixed peripheral pin constraints |
| On-chip voltage reference | Integrated precision bandgap reference supports stable ADC/DAC operation across temperature and supply variations |
| User-configurable LVD | Programmable low-voltage detection thresholds (2.2 V, 2.5 V, 2.8 V, 3.1 V) enable graceful shutdown or brown-out recovery |
Applications
| Industrial Sensor Interface | Motor Control Feedback |
|---|---|
Use Scenario: Monitoring temperature, pressure, and current in factory automation nodes with limited board space and power budget. IC Role / Device Role / Timing Role: Central mixed-signal controller acquiring analog sensor data via 14-bit ADC, conditioning signals with PGAs, and transmitting results over UART to PLC. Use Value: Eliminates discrete opamps, ADCs, and microcontroller - reduces BOM count by ≥7 components while maintaining ±0.1% measurement linearity. | Use Scenario: Closed-loop speed and position control of BLDC motors in HVAC blowers and conveyor drives. IC Role / Device Role / Timing Role: Real-time PWM generation (16-bit resolution), quadrature encoder input capture, and current sensing via analog blocks synchronized to 24 MHz CPU clock. Use Value: Achieves <1 µs PWM edge jitter and sub-microsecond interrupt latency - critical for torque ripple reduction and commutation timing accuracy. |
| Smart Power Metering | Capacitive Touch HMI |
Use Scenario: Residential energy meter with voltage/current sampling, RMS calculation, and tamper detection via analog comparators. IC Role / Device Role / Timing Role: Simultaneous dual-channel 14-bit ADC sampling at 100 kSPS, CRC-16 checksum generation for data integrity, and I²C communication to display MCU. Use Value: Meets IEC 62053-21 Class 1 accuracy requirements using on-chip decimator and digital filtering - no external DSP required. | Use Scenario: Appliance control panel with slider, buttons, and proximity wake-up using self-capacitance sensing. IC Role / Device Role / Timing Role: Dedicated analog block configured as switched-capacitor front-end with auto-calibration, coupled with digital PRS module for noise immunity. Use Value: Supports >100 ms response time and >20 dB SNR in noisy EMI environments - validated per IEC 61000-4-3 Level 3 radiated immunity. |
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 |
|---|---|---|---|
| CY8C27443-24PVXIT | Same die, 28-pin SSOP package with lead-free finish and extended –40°C to +105°C temp grade | Required for automotive under-hood or high-temp industrial enclosures where SOIC thermal limits are exceeded | Select when ambient operating temperature exceeds +85°C or RoHS-compliant matte-tin plating is mandated |
| CY8C27643-24SXI | Pin-compatible upgrade with 32 KB flash, 512 bytes SRAM, and two additional analog blocks (14 total) | Needed for designs requiring larger firmware image size or concurrent multi-channel analog signal processing | Select when firmware growth exceeds 16 KB or dual independent ADC channels are required |
Compared with CY8C27443-24PVXIT, the -24SXI offers lower cost and standard industrial temperature rating; compared with CY8C27643-24SXI, it provides identical peripheral count and footprint at reduced memory capacity - ideal for cost-sensitive, volume-manufactured sensor nodes.
Availability
CY8C27443-24SXI is available at Aetrix Electronics and suitable for industrial sensor interfaces, motor control feedback systems, smart power metering, and capacitive touch HMI requiring stable component supply and long-term production continuity.
Supply support for CY8C27443-24SXI 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 embedded solutions, connectivity, and memory technologies for industrial, automotive, and consumer markets.
The CY8C27x43 PSoC 1 family was designed to replace discrete analog/digital components with a single configurable SoC for cost-sensitive, low-power mixed-signal control applications - emphasizing rapid prototyping via drag-and-drop peripheral configuration in PSoC Designer.
FAQ
What development tools are required to program the CY8C27443-24SXI?
The CY8C27443-24SXI is programmed using Cypress's free PSoC Designer IDE (Windows only), which provides drag-and-drop peripheral configuration and auto-generated C APIs. Programming hardware includes MiniProg3 (USB-based) or ICE-Cube for full-speed emulation. No third-party toolchain licensing is needed.
Does the CY8C27443-24SXI support USB connectivity?
No, the CY8C27443-24SXI does not include native USB PHY or transceiver circuitry. It supports UART, SPI, and I²C for host communication. For USB interface, external bridge ICs (e.g., CP2102) or migration to PSoC 3/4 devices with integrated USB are required.
Can the internal 24 MHz oscillator meet timing-critical PWM requirements?
Yes - the internal main oscillator (IMO) delivers ±2.5% accuracy over temperature and voltage, sufficient for most motor control and lighting PWM applications. For tighter frequency stability (<±0.5%), an external 32.768 kHz crystal with PLL multiplication is recommended.
How is EEPROM functionality implemented on this device?
EEPROM is emulated in flash memory using Cypress's "Emulated EEPROM" user module, which manages wear-leveling and atomic write operations across designated flash sectors. Up to 2 KB of EEPROM-equivalent nonvolatile storage is available, with 100,000 write cycles per logical byte.
CY8C27443-24SXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Series:
- PSOC™1 CY8C27xxx
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Verified
- Core Processor:
- M8C
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- 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 4x14b; D/A 4x9b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C27443-24SXI FAQ
1.How can I place an order for CY8C27443-24SXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C27443-24SXI 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 CY8C27443-24SXI reliable?
The price and inventory of CY8C27443-24SXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C27443-24SXI is usually 5 days.
3.What payment methods are accepted for CY8C27443-24SXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C27443-24SXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C27443-24SXI?
CY8C27443-24SXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C27443-24SXI 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 CY8C27443-24SXI?
For technical support, including CY8C27443-24SXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C27443-24SXI requirements.
6.How does Aetrix verify that CY8C27443-24SXI is sourced from the original manufacturer or authorized distributors?
All CY8C27443-24SXI 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 CY8C27443-24SXI meets industry standards.
7.What is the process for return or replacement of CY8C27443-24SXI?
All CY8C27443-24SXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C27443-24SXI, 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 CY8C27443-24SXI part is unused and in its original packaging.
Return procedure for CY8C27443-24SXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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