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Infineon Technologies CY8C27443-24SXIT
- Part No.:
- CY8C27443-24SXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY8C27443-24SXIT.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,718
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Product details
Overview
CY8C27443-24SXIT 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 subsystems.
For engineers reviewing the CY8C27443-24SXIT datasheet, CY8C27443-24SXIT pinout, CY8C27443-24SXIT application, or CY8C27443-24SXIT equivalent, key selection criteria include its 24-MHz IMO accuracy (±2.5%), rail-to-rail analog block capability (14-bit ADC, 9-bit DAC), 3.0–5.25 V operating range, and 44-pin SSOP package with full GPIO configurability including 30-mA analog outputs and interrupt-on-change support.
Technical Context
The CY8C27443-24SXIT integrates a hardwired M8C core with programmable analog and digital peripheral arrays interconnected via global digital/analog busing. Its clock system combines a ±2.5% 24-MHz internal main oscillator (IMO), optional 32.768-kHz crystal input for RTC/PLL-based 24-MHz generation, and a low-power 32-kHz ILO for sleep/WDT timing.
Analog functionality is delivered through twelve configurable analog PSoC blocks supporting simultaneous ADC (up to 14-bit), DAC (up to 9-bit), PGA, comparator, and filter functions-each routable to eight standard analog inputs or four restricted analog inputs. Digital peripherals include dual UARTs, dual SPIs, I²C master/slave/multi-master, 8–32-bit timers/counters, and PWMs with dead-band control.
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 on-chip SRAM - sufficient for stack, registers, and small data buffers in deeply embedded applications. |
| Analog Blocks | 12 configurable analog PSoC blocks - deliver concurrent high-precision signal conditioning: 14-bit SAR ADC, 9-bit DAC, PGA, comparator, and switched-capacitor filters. |
| Digital Blocks | 8 digital PSoC blocks - form user-configurable 8–32-bit peripherals including dual UARTs, dual SPIs, I²C, CRC/PRS, and PWMs with dead-band. |
| Operating Voltage | 3.0 V to 5.25 V - compatible with legacy 3.3 V and 5 V logic domains without level-shifting. |
| Temperature Range | –40 °C to +85 °C industrial grade - validated for use in factory automation, HVAC controls, and motor drive feedback loops. |
Pinout & Package
This device is housed in a 44-pin SSOP (Shrink Small Outline Package) with 0.8 mm lead pitch, JEDEC MS-013AC compliant, optimized for compact industrial PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | Accepts 3.0–5.25 V; powers core, analog blocks, and digital logic; requires local 0.1 µF decoupling. |
| VSS | Ground reference | System ground return for all analog/digital circuits; must be low-impedance and separated from noisy digital returns where precision analog is used. |
| XIN / XOUT | External crystal oscillator terminals | Supports 32.768 kHz crystal for RTC or PLL reference; internal load caps eliminate need for external capacitors. |
| P0[0]–P0[7] | Port 0 general-purpose I/O | Configurable as GPIO, analog input (8 channels), or analog output (4 channels); supports pull-up/pull-down, open-drain, and interrupt-on-change. |
| P1[0]–P1[7] | Port 1 general-purpose I/O | Full digital/analog routing capability; each pin drives up to 25 mA sink / 10 mA source; supports analog muxing to analog blocks. |
| P2[0]–P2[7] | Port 2 general-purpose I/O | Includes dedicated I²C SDA/SCL pins; supports SMBus-compatible timing and glitch filtering for robust bus communication. |
| P3[0]–P3[7] | Port 3 general-purpose I/O | Provides UART0 TX/RX, SPI0 MISO/MOSI/SCLK/SS; fully routable to digital PSoC blocks for custom serial protocol implementation. |
| P4[0]–P4[7] | Port 4 general-purpose I/O | Supports UART1, SPI1, and PWM outputs; includes hardware-controlled dead-band insertion for motor gate drive timing safety. |
| P5[0]–P5[3] | Port 5 general-purpose I/O | Four pins only; routed to analog block inputs and reference voltage sources; supports precision analog sensing with <1 LSB INL error. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks | 12 independent analog resources enabling concurrent ADC, DAC, PGA, and comparator functions - eliminates need for external signal-conditioning ICs in sensor front-ends. |
| Dynamic GPIO Configuration | All 34 GPIOs support 8 drive modes (strong, open-drain, pull-up/down, high-Z) and interrupt-on-change - simplifies interface to diverse sensors, actuators, and legacy buses. |
| On-Chip Voltage Reference | Integrated 1.2 V precision bandgap reference with <0.5% drift over temperature - ensures stable ADC/DAC performance without external reference components. |
| In-System Serial Programming | ISSP interface via dedicated pins enables firmware updates in final assembly or field deployment - supports secure partial flash updates and block-level protection. |
| Switch Mode Pump (SMP) | On-chip DC-DC converter extends operation down to 1.0 V supply - allows battery-powered operation in ultra-low-power wake/sleep cycles without external boost regulators. |
Applications
| Industrial Sensor Interface | Motor Control Feedback System |
|---|---|
|
Use Scenario: Condition signals from RTD, thermocouple, and bridge-based pressure sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Mixed-signal controller performing simultaneous 14-bit ADC sampling, PGA gain adjustment, and digital filtering before CAN/I²C transmission. Use Value: Replaces discrete opamp, ADC, and microcontroller with single chip - reduces BOM count by 7+ components and improves thermal drift matching across signal chain. |
Use Scenario: Closed-loop speed/torque control of BLDC motors in HVAC blowers and industrial pumps. IC Role / Device Role / Timing Role: Real-time PWM generator with hardware dead-band insertion, current-sense ADC, and fault-handling logic synchronized to motor commutation timing. Use Value: Enables sub-microsecond PWM edge alignment and fast overcurrent shutdown (<2 µs response) - prevents IGBT shoot-through and improves system reliability. |
| Smart Power Supply Monitor | Capacitive Touch + LED Driver |
|
Use Scenario: Monitoring rail voltages, temperature, and fan status in telecom rectifiers and server PSUs. IC Role / Device Role / Timing Role: System supervisor executing periodic ADC measurements, LVD threshold checks, watchdog resets, and I²C telemetry reporting. Use Value: Integrates voltage reference, comparators, and EEPROM-emulated NVM for calibration storage - eliminates external supervisor and trim components. |
Use Scenario: Unified touch-button interface and dynamic LED backlight control in medical device front panels. IC Role / Device Role / Timing Role: Capacitive sensing engine (via CSD method) plus 4-channel 30-mA analog LED drivers with PWM dimming and thermal foldback. Use Value: Delivers <10 pF sensitivity and <1% LED current matching across channels - achieves Class B EMC compliance without shielded cables or external drivers. |
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 | 44-pin TQFP package (0.8 mm pitch), exposed pad for thermal dissipation - no SSOP footprint compatibility. | Preferred for higher thermal loads or reflow profiles requiring better solder joint reliability than SSOP. | Select when board layout allows TQFP and thermal management exceeds 1.2 W dissipation. |
| CY8C27543-24SXIT | Same package and pinout, but adds two additional analog PSoC blocks (14 total) and one extra digital block (9 total). | Suitable for designs requiring more concurrent analog channels (e.g., multi-zone temperature control) without changing PCB. | Choose for future-proofing or incremental feature expansion while retaining mechanical and layout compatibility. |
Compared with CY8C27443-24SXIT, the CY8C27443-24PVXI offers superior thermal performance in space-constrained TQFP layouts, while the CY8C27543-24SXIT delivers immediate analog resource headroom - both maintain identical instruction set, clocking, and ISSP programming infrastructure.
Availability
CY8C27443-24SXIT is available at Aetrix Electronics and suitable for industrial sensor interfaces, motor control feedback systems, smart power supply monitors, and capacitive touch + LED driver applications requiring stable component supply across extended product lifecycles.
Supply support for CY8C27443-24SXIT 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, memory, and connectivity products for industrial, automotive, and consumer markets.
The PSoC 1 family - including CY8C27443 - was engineered to replace multiple discrete analog/digital components with a single configurable SoC for cost-sensitive, low-to-mid complexity embedded control applications.
FAQ
Does CY8C27443-24SXIT support USB device functionality?
No. The CY8C27443-24SXIT does not include a USB physical layer or USB controller. It supports UART, SPI, and I²C for host communication. USB connectivity requires external transceivers or migration to PSoC 3/4 families with native USB support.
Can the internal 24-MHz oscillator meet timing requirements for UART at 115.2 kbps?
Yes. With ±2.5% accuracy over temperature and voltage, the 24-MHz IMO yields UART baud rate error <0.5% at 115.2 kbps using standard dividers - well within RS-232 and TTL serial specification limits for reliable communication.
Is EEPROM emulation supported, and what is its endurance?
Yes. Up to 2 KB of EEPROM is emulated in flash using Cypress's Emulated EEPROM User Module. Endurance is rated at 100,000 write cycles per sector, with wear-leveling handled automatically by the API - verified per AN2211 and PSoC Designer v5.4 documentation.
What debug interfaces are available during development?
The device supports full-speed in-circuit emulation (ICE) via MiniProg1 or MiniProg3 programmers. Debug features include complex breakpoints, 128 KB trace memory, real-time variable watch, and full-speed execution - accessible through PSoC Designer IDE without requiring JTAG adapters or SWD pins.
CY8C27443-24SXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Series:
- PSOC™1 CY8C27xxx
- Packaging:
- Tape & Reel (TR)
- 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:
CY8C27443-24SXIT FAQ
1.How can I place an order for CY8C27443-24SXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C27443-24SXIT 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 CY8C27443-24SXIT reliable?
The price and inventory of CY8C27443-24SXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C27443-24SXIT is usually 5 days.
3.What payment methods are accepted for CY8C27443-24SXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C27443-24SXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C27443-24SXIT?
CY8C27443-24SXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C27443-24SXIT 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 CY8C27443-24SXIT?
For technical support, including CY8C27443-24SXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C27443-24SXIT requirements.
6.How does Aetrix verify that CY8C27443-24SXIT is sourced from the original manufacturer or authorized distributors?
All CY8C27443-24SXIT 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 CY8C27443-24SXIT meets industry standards.
7.What is the process for return or replacement of CY8C27443-24SXIT?
All CY8C27443-24SXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C27443-24SXIT, 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 CY8C27443-24SXIT part is unused and in its original packaging.
Return procedure for CY8C27443-24SXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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