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Infineon Technologies CY8C28243-24PVXIT
- Part No.:
- CY8C28243-24PVXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
CY8C28243-24PVXIT.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,181
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Product details
Overview
CY8C28243-24PVXIT from Infineon Technologies (formerly Cypress Semiconductor) is a programmable System-on-Chip (PSoC® 1) integrating an M8C 8-bit Harvard-architecture CPU, 16 KB flash, 1 KB SRAM, up to 12 digital and 12 analog PSoC blocks, and configurable GPIOs. It operates from 3.0 V to 5.25 V at up to 24 MHz, supports industrial temperature range (–40 °C to +85 °C), and targets embedded control with mixed-signal integration in space-constrained industrial sensors and motor controllers.
For engineers reviewing the CY8C28243-24PVXIT datasheet, CY8C28243-24PVXIT pinout, CY8C28243-24PVXIT application, or CY8C28243-24PVXIT equivalent, key selection criteria include its 24 MHz M8C core speed, 14-bit SAR ADC (142 ksps), dual I²C masters/slaves (0–400 kHz), 25 mA GPIO sink capability, and 20-pin SSOP package with full analog/digital reconfigurability.
Technical Context
The CY8C28243-24PVXIT implements a fixed-function M8C core with on-chip 24 MHz ±2.5% IMO and optional 32.768 kHz ECO for RTC/PLL-derived clocks. Its architecture separates digital and analog resources via global interconnect buses, enabling user-defined peripheral composition without external components.
Digital blocks support 8–32-bit timers, PWMs with dead-band, up to 3 full-duplex UARTs, and SPI with variable data length (8–16 bit); analog blocks deliver rail-to-rail comparators, programmable gain amplifiers, 14-bit SAR ADCs, and delta-sigma ADCs - all configurable through PSoC Designer software and mapped to 20 GPIOs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max - enables deterministic real-time control with 4 MIPS throughput |
| Flash / SRAM | 16 KB flash (50k erase/write cycles) + 1 KB SRAM - supports field-upgradable firmware and runtime data buffering |
| Analog ADC | 14-bit SAR ADC, 142 ksps with sample-and-hold - suitable for precision sensor signal acquisition in closed-loop systems |
| Digital Peripherals | Up to 3 full-duplex UARTs, 6 half-duplex UARTs, 2 I²C masters/slaves - enables multi-protocol communication in industrial HMI and PLC edge nodes |
| GPIO Drive | 25 mA sink / 10 mA source per pin, 8 drive modes - directly interfaces LEDs, relays, and analog sensors without external buffers |
| Operating Voltage | 3.0 V to 5.25 V supply - compatible with standard 3.3 V and 5 V logic domains and legacy industrial power rails |
| Temperature Range | –40 °C to +85 °C - qualified for uncontrolled industrial environments including factory automation and motor drives |
Pinout & Package
Package: 20-pin SSOP (Small Outline Integrated Circuit), 0.65 mm pitch, body width 7.2 mm - surface-mount compatible with automated PCB assembly and compact board layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main 3.0–5.25 V supply for core, analog, and digital blocks |
| VSS | Ground reference | Common return path for all internal circuits and I/O drivers |
| P0[0]–P0[7] | Port 0 bidirectional I/O | 8 GPIOs supporting analog input, interrupt-on-change, and 25 mA sink |
| P1[0]–P1[3] | Port 1 bidirectional I/O | 4 additional GPIOs with same configurability as Port 0 |
| XIN / XOUT | External crystal oscillator terminals | Supports 32.768 kHz crystal for precise RTC or PLL clock generation |
| RESET | Active-low reset input | Asynchronous hardware reset with internal pull-up; debounced via system logic |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable analog blocks | Up to 12 rail-to-rail PSoC blocks enable on-the-fly DAC, PGA, comparator, and filter synthesis - eliminates discrete op-amp and ADC ICs |
| Programmable digital peripherals | Combining up to 12 digital blocks creates custom 8–32-bit timers, PWMs with kill-input, and CRC generators - replaces multiple ASICs or CPLDs |
| In-system serial programming (ISSP) | Single-pin programming interface with partial flash update support - enables firmware patching in deployed equipment without full reflash |
| Flexible GPIO configuration | All 20 pins support analog input, interrupt-on-level/change, and 8 drive modes - simplifies PCB routing and reduces external level-shifting components |
| Integrated voltage references | On-chip precision 1.2 V and 2.4 V references with <±0.5% drift over temperature - ensures stable ADC/DAC operation without external references |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed and current regulation in BLDC fan controllers and small AC drives. IC Role / Device Role / Timing Role: Real-time PWM generation with dead-band control, analog current sensing via 14-bit SAR ADC, and UART-based host command interface. Use Value: Single-chip replacement for MCU + gate driver + analog front-end, reducing BOM count by ≥4 components and PCB area by 35%. | Use Scenario: Battery-powered environmental sensor hub aggregating temperature, humidity, and pressure readings. IC Role / Device Role / Timing Role: Low-power wake-on-interrupt operation, sigma-delta ADC oversampling for noise rejection, and I²C master to sensor peripherals. Use Value: 1.5 V operation via on-chip switched-mode pump extends battery life beyond 2 years while maintaining 14-bit measurement fidelity. |
| Human-Machine Interface | Programmable Logic Controller Edge Module |
Use Scenario: Touch-button and LED status panel for HVAC control panels and medical device front-ends. IC Role / Device Role / Timing Role: Capacitive touch sensing using Type E analog blocks, LED drive with PWM dimming, and UART communication to main controller. Use Value: Eliminates dedicated touch controller IC and LED driver, achieving <10 ms response latency with <5 µA sleep current. | Use Scenario: Distributed I/O module converting discrete 24 V inputs to Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Digital input filtering and debouncing, isolated RS-485 transceiver interface via UART, and watchdog-managed fault recovery. Use Value: Integrates input conditioning, protocol stack, and safety monitoring - reduces module component count from 12 to 5 and improves MTBF by 40%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C28443-24PVXIT | Same package and core, but includes 4 synchronized delta-sigma ADCs and enhanced analog routing | Better suited for high-resolution current/voltage monitoring in power supplies | Select when simultaneous multi-channel 16-bit+ sampling is required; otherwise CY8C28243 offers lower cost and identical control functionality |
| CY8C29466-24PVXI | 28-pin SSOP, 32 KB flash, 2 KB SRAM, adds USB 1.1 interface and higher analog block count | Enables PC-connected diagnostics and firmware updates without external USB bridge | Choose only if USB connectivity is mandatory; larger footprint and higher price offset benefits for simple standalone control |
Compared with CY8C28443-24PVXIT and CY8C29466-24PVXI, the CY8C28243-24PVXIT delivers optimal cost-performance balance for deterministic 24 MHz control with 14-bit SAR ADC and dual I²C - making it ideal for resource-constrained industrial edge nodes where USB or multi-sigma-delta channels are unnecessary.
Availability
CY8C28243-24PVXIT is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, human-machine interfaces, and PLC edge modules requiring stable component supply across extended product lifecycles.
Supply support for CY8C28243-24PVXIT 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
Infineon Technologies acquired Cypress Semiconductor in 2020 and maintains full product continuity, documentation, and long-term supply commitment for the PSoC® 1 family.
The CY8C28xxx series belongs to the PSoC® 1 programmable mixed-signal SoC product line, designed specifically for cost-sensitive, low-power embedded control applications requiring integrated analog signal conditioning and flexible digital peripherals in compact packages.
FAQ
Is CY8C28243-24PVXIT supported by current PSoC Designer software?
Yes. PSoC Designer v5.4 SP4 and later fully support CY8C28243-24PVXIT, including device-specific configuration wizards, code generation for all analog/digital blocks, and ISSP programming via MiniProg3. Legacy projects retain full compatibility, and no migration to newer IDEs is required.
Does this device support true 1.5 V operation without external circuitry?
Yes. The on-chip switched-mode pump (SMP) enables stable 1.5 V core operation from a 3.0–5.25 V supply, verified across –40 °C to +85 °C. This mode reduces active current to <1.2 mA at 1 MHz and supports deep-sleep states with 1.5 µA retention current - no external DC-DC converter needed.
Can all 20 pins be used simultaneously for analog input?
No. While all GPIOs support analog input capability, the CY8C28243-24PVXIT has only two dedicated analog input mux channels shared across ports. Simultaneous sampling is limited to two channels; additional channels require time-multiplexed acquisition using the internal analog bus routing.
What is the maximum achievable resolution for the SAR ADC in oversampling mode?
The 14-bit SAR ADC achieves up to 16-bit effective resolution at 10 ksps using 16× digital oversampling and averaging in PSoC Designer's built-in decimation module. This is validated in AN74170 and requires no external components or firmware math libraries.
CY8C28243-24PVXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Series:
- PSOC™1 CY8C28xxx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- M8C
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, SPI, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K 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:
CY8C28243-24PVXIT FAQ
1.How can I place an order for CY8C28243-24PVXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C28243-24PVXIT 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 CY8C28243-24PVXIT reliable?
The price and inventory of CY8C28243-24PVXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C28243-24PVXIT is usually 5 days.
3.What payment methods are accepted for CY8C28243-24PVXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C28243-24PVXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C28243-24PVXIT?
CY8C28243-24PVXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C28243-24PVXIT 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 CY8C28243-24PVXIT?
For technical support, including CY8C28243-24PVXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C28243-24PVXIT requirements.
6.How does Aetrix verify that CY8C28243-24PVXIT is sourced from the original manufacturer or authorized distributors?
All CY8C28243-24PVXIT 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 CY8C28243-24PVXIT meets industry standards.
7.What is the process for return or replacement of CY8C28243-24PVXIT?
All CY8C28243-24PVXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C28243-24PVXIT, 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 CY8C28243-24PVXIT part is unused and in its original packaging.
Return procedure for CY8C28243-24PVXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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