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Infineon Technologies CY8C28243-24PVXI
- Part No.:
- CY8C28243-24PVXI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
CY8C28243-24PVXI.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,853
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Product details
Overview
CY8C28243-24PVXI 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 PSoC blocks, and up to 16 analog PSoC blocks - all in a 28-pin SSOP package. It operates from 3.0 V to 5.25 V at up to 24 MHz and supports industrial temperature range (–40 °C to +85 °C), enabling embedded control with mixed-signal reconfigurability in space-constrained industrial sensors.
For engineers reviewing the CY8C28243-24PVXI datasheet, CY8C28243-24PVXI pinout, CY8C28243-24PVXI application, or CY8C28243-24PVXI equivalent, key selection criteria include its 24 MHz M8C core speed, 14-bit SAR ADC (142 ksps), dual I²C interfaces (0–400 kHz), configurable GPIO drive modes (25 mA sink), and on-chip switched-mode pump for 1.5 V operation - critical for low-power sensor node and motor control firmware integration.
Technical Context
The CY8C28243-24PVXI implements a fixed-function M8C CPU core with 24 MHz maximum clocking via internal ±2.5% IMO or optional 32.768 kHz ECO + PLL, supporting deterministic real-time execution. Its digital system uses up to 12 reconfigurable 8-bit PSoC blocks connected via global digital interconnect to any GPIO, enabling user-defined peripherals including up to three full-duplex UARTs and six half-duplex UARTs.
Analog functionality includes up to 14-bit SAR ADC with sample-and-hold (142 ksps), programmable gain amplifiers, delta-sigma ADCs, and capacitive sensing blocks - all routed through global analog interconnect and configurable analog input multiplexing. Clocking integrates IMO, ILO, ECO, and PLL resources with dedicated sleep/wake logic and voltage supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max - enables deterministic real-time control without external clock source dependency |
| Flash / SRAM | 16 KB flash (50,000 erase/write cycles), 1 KB SRAM - supports field-upgradable firmware and local data buffering in standalone nodes |
| ADC Performance | 14-bit SAR ADC, 142 ksps with sample-and-hold - delivers high-resolution analog acquisition for precision sensor conditioning |
| Digital Peripherals | Up to 3 full-duplex UARTs, 6 half-duplex UARTs, 2 I²C masters/slaves (0–400 kHz) - enables multi-protocol communication in industrial HMI and PLC edge modules |
| GPIO Drive | 25 mA sink / 10 mA source per pin, 8 configurable drive modes - directly drives LEDs, relays, and analog front-end switches without external buffers |
| Operating Voltage | 3.0 V to 5.25 V nominal; down to 1.5 V using on-chip switched-mode pump - supports battery-backed operation and legacy 3.3/5 V system integration |
| Temperature Range | –40 °C to +85 °C industrial grade - validated for deployment in uncontrolled ambient environments like factory floor controllers |
Pinout & Package
Package: 28-pin SSOP (Small Outline Package), 300 mil width, JEDEC MS-012AC compliant - suitable for automated SMT assembly and compact PCB layouts in industrial control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply input | Accepts 3.0–5.25 V; powers core, digital blocks, and analog reference circuitry |
| VSS | Ground reference | Common return path for all digital and analog domains; requires low-impedance PCB plane |
| XIN / XOUT | External crystal oscillator terminals | Supports 32.768 kHz crystal for RTC or precise clock generation with PLL multiplication to 24 MHz |
| P0[0]–P0[7] | Port 0 general-purpose I/O | Configurable as digital/analog I/O; supports interrupt-on-change, pull-up/down, and analog input muxing |
| P1[0]–P1[7] | Port 1 general-purpose I/O | Same drive and analog capabilities as Port 0; connects to global digital/analog interconnect buses |
| P2[0]–P2[7] | Port 2 general-purpose I/O | Includes dedicated analog block routing paths; supports capacitive sensing and comparator inputs |
| RESET | Active-low reset input | Asynchronous hardware reset; debounced internally; compatible with open-drain microcontroller reset networks |
| SWD | Serial Wire Debug interface | 2-pin debug port for programming and real-time emulation via MiniProg3; replaces traditional JTAG overhead |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable Analog Blocks | Up to 16 analog PSoC blocks support SAR/delta-sigma ADCs, PGAs, filters, and comparators - eliminates need for discrete signal-conditioning ICs in sensor front-ends |
| Flexible Digital Peripherals | 12 digital PSoC blocks combine into timers, PWMs, UARTs, SPI, CRC, and PRS - enables custom protocol stacks and timing-critical motor control logic |
| On-Chip Voltage Management | Integrated switched-mode pump enables 1.5 V operation from 3.0 V supply - extends battery life in portable instrumentation without external DC-DC converters |
| Programmable GPIO | All 28 pins support analog input, interrupt-on-change, and 8 drive modes including open-drain and strong output - simplifies board-level interface design across diverse peripheral types |
| In-System Programming | ISSP-compatible serial interface with partial flash update capability - allows firmware patches in deployed systems without full reflash downtime |
Applications
| Industrial Sensor Node | Motor Control Interface |
|---|---|
Use Scenario: Compact environmental monitoring unit measuring temperature, humidity, and pressure with local signal conditioning and RS-485 output. IC Role / Device Role / Timing Role: Central PSoC controller executing sensor fusion algorithms, driving SAR ADCs, managing UART-to-RS485 transceiver timing, and regulating power via SMP. Use Value: Single-chip integration reduces BOM count by 7+ discrete analog/digital components while maintaining 14-bit measurement fidelity and 24 MHz real-time response. | Use Scenario: Brushless DC motor driver with Hall-effect feedback, current sensing, and PWM commutation logic in HVAC blower modules. IC Role / Device Role / Timing Role: Real-time motor sequencing engine generating synchronized 16-bit PWMs with dead-band control, sampling analog current via delta-sigma ADC, and handling I²C-based thermal feedback. Use Value: On-chip analog blocks eliminate external op-amps and comparators; configurable digital blocks enable precise 120° commutation timing without FPGA or external logic. |
| Capacitive Touch HMI | Legacy Protocol Bridge |
Use Scenario: Appliance control panel with 8-button capacitive touch interface, LED status indicators, and buzzer feedback. IC Role / Device Role / Timing Role: Capacitive sensing hub using Type E analog blocks for mutual-capacitance scanning, GPIO-driven LED drivers, and tone generation via PWM audio synthesis. Use Value: Integrated CapSense blocks achieve <10 µA average current in sleep mode and support >30 mm overlay thickness - eliminating dedicated touch controller ICs. | Use Scenario: Industrial gateway translating Modbus RTU over RS-485 to I²C-connected smart sensors in legacy building automation systems. IC Role / Device Role / Timing Role: Protocol translation engine with dual UART (RS-485 half-duplex) and dual I²C master interfaces, performing packet parsing, address mapping, and CRC validation. Use Value: Hardware-accelerated UART/I²C peripherals offload timing-critical framing from firmware, enabling reliable 9600–115200 bps Modbus polling with <50 µs jitter. |
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 |
|---|---|---|---|
| CY8C28443-24PVXI | Same package and core, but includes 4 synchronized delta-sigma ADCs (vs. 1 SAR ADC in CY8C28243); no Type E analog blocks | Better suited for high-precision current/voltage monitoring in power supplies; lacks capacitive sensing capability | Select when multi-channel simultaneous sampling is required over single-shot SAR resolution |
| CY8C28643-24PVXI | Full-feature variant: adds 2 additional digital blocks, 2 extra analog blocks, and enhanced CapSense support vs. CY8C28243 | Enables more complex HMI + sensor fusion designs (e.g., touch + temp + motion in one device) | Choose when project scope expands beyond baseline resource limits and budget permits higher gate count |
Compared with CY8C28243-24PVXI, CY8C28443 offers superior analog acquisition concurrency at the cost of touch capability, while CY8C28643 provides headroom for feature growth but increases unit cost and power - making CY8C28243 optimal for cost-sensitive, fixed-function industrial controllers.
Availability
CY8C28243-24PVXI is available at Aetrix Electronics and suitable for industrial sensor nodes, motor control interfaces, capacitive touch HMIs, and legacy protocol bridges requiring stable component supply and long-term manufacturability.
Supply support for CY8C28243-24PVXI 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 support for the PSoC® 1 family - delivering high-reliability mixed-signal solutions for industrial and automotive markets.
The CY8C28xxx series belongs to the PSoC® 1 programmable SoC product line, designed specifically for cost-optimized, reconfigurable embedded control where analog/digital integration reduces system complexity - targeting industrial automation, appliance control, and sensor-edge applications.
FAQ
What development tools are required to program the CY8C28243-24PVXI?
PSoC Designer™ (free Windows IDE) is the official development environment, providing drag-and-drop peripheral configuration, auto-generated API libraries, and full-speed emulation. Programming requires MiniProg1 or MiniProg3 hardware debuggers connected via SWD interface - no external programmer needed for ISSP-based field updates.
Does the CY8C28243-24PVXI support capacitive touch sensing?
Yes - it includes up to four Type E analog blocks optimized for capacitive sensing, supporting both self- and mutual-capacitance configurations with built-in IDACs and shield drivers. These blocks operate independently of the main SAR ADC and support >30 ms scan times per button with noise immunity up to 20 Vpp.
Can the CY8C28243-24PVXI operate below 3.0 V?
Yes - using the on-chip switched-mode pump (SMP), the device sustains full functionality down to 1.5 V supply voltage. This mode enables battery-powered operation with alkaline or Li-ion cells without external DC-DC regulation, though flash programming requires ≥3.0 V.
Is the CY8C28243-24PVXI pin-compatible with other CY8C28xxx devices?
No - pinouts vary across the CY8C28xxx family due to differing analog/digital block allocations and I/O routing constraints. The CY8C28243-24PVXI uses a specific 28-pin SSOP mapping defined in datasheet section "28-pin Part Pinout" (page 13); migration to CY8C28443 or CY8C28643 requires PCB redesign.
CY8C28243-24PVXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Series:
- PSOC™1 CY8C28xxx
- Packaging:
- Tube
- 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:
CY8C28243-24PVXI FAQ
1.How can I place an order for CY8C28243-24PVXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C28243-24PVXI 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 CY8C28243-24PVXI reliable?
The price and inventory of CY8C28243-24PVXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C28243-24PVXI is usually 5 days.
3.What payment methods are accepted for CY8C28243-24PVXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C28243-24PVXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C28243-24PVXI?
CY8C28243-24PVXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C28243-24PVXI 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 CY8C28243-24PVXI?
For technical support, including CY8C28243-24PVXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C28243-24PVXI requirements.
6.How does Aetrix verify that CY8C28243-24PVXI is sourced from the original manufacturer or authorized distributors?
All CY8C28243-24PVXI 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 CY8C28243-24PVXI meets industry standards.
7.What is the process for return or replacement of CY8C28243-24PVXI?
All CY8C28243-24PVXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C28243-24PVXI, 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 CY8C28243-24PVXI part is unused and in its original packaging.
Return procedure for CY8C28243-24PVXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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