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Infineon Technologies CY8CPLC20-48LFXI
- Part No.:
- CY8CPLC20-48LFXI
- Manufacturer:
- Infineon Technologies
- Category:
- Modems - ICs and Modules
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
CY8CPLC20-48LFXI.pdf
- Description:
- IC PLC PSOC CMOS 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,327
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Product details
Overview
CY8CPLC20-48LFXI from Infineon Technologies (formerly Cypress Semiconductor) is a single-chip powerline communication (PLC) solution integrating an FSK modem PHY, network protocol stack (data link + transport + network layers), and a programmable PSoC 1 mixed-signal microcontroller. It supports bidirectional half-duplex communication up to 2400 bps on AC/DC powerlines, includes 8-bit CRC error detection, and operates with I²C interface at 50/100/400 kHz. Used in smart grid metering, home automation control nodes, and industrial building management systems.
For engineers reviewing the CY8CPLC20-48LFXI datasheet, CY8CPLC20-48LFXI pinout, CY8CPLC20-48LFXI application, or CY8CPLC20-48LFXI equivalent, key selection criteria include FSK carrier frequencies (131.8/133.3 kHz), integrated MAC/PHY co-processing, CENELEC EN 50065-1 and FCC Part 15 compliance support, and PSoC 1's configurable analog/digital blocks for coupling circuit control and signal conditioning.
Technical Context
The CY8CPLC20-48LFXI implements a dedicated FSK-based physical layer with fixed carrier frequencies (131.8 kHz for logic '1', 133.3 kHz for logic '0'; optional 130.4 kHz for wider deviation) and on-chip HF band-pass filtering, mixer, correlator, and low-pass filtering for robust demodulation in noisy powerline environments. Its digital receiver includes hysteresis comparator and deserializer to suppress noise-induced false triggers.
The embedded network protocol handles bidirectional half-duplex communication using CSMA collision avoidance, 8-bit logical addressing (256 nodes), and automatic packet retransmission on CRC failure. It runs alongside user application code on the M8C Harvard-architecture core, enabling concurrent PLC stack execution and custom firmware logic without external host processor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Modulation | Frequency Shift Keying (FSK) with fixed 131.8/133.3 kHz carriers; enables reliable baseband signaling over lossy powerlines. |
| Max Data Rate | 2400 bps raw data rate; sufficient for command/control telemetry in smart metering and lighting networks. |
| I²C Interface | Slave/master/multi-master support at 50/100/400 kHz; allows direct connection to host MCU or sensor hub without level-shifting. |
| Processor Core | M8C Harvard architecture, 24 MHz max clock; executes PLC protocol stack and application logic concurrently. |
| Memory | 32 KB flash (50k erase/write cycles), 2 KB SRAM, EEPROM emulation; supports field-upgradable firmware and persistent node configuration. |
| Error Detection | 8-bit CRC per packet; ensures data integrity and triggers automatic retransmission on corruption. |
| Powerline Compliance | Reference designs compliant with CENELEC EN 50065-1:2001 and FCC Part 15; simplifies regulatory certification for 110/240 V AC and 12/24 V AC/DC systems. |
Pinout & Package
Package: 48-pin QFP (LQFP-48), 7 mm × 7 mm, 0.5 mm pitch, RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Core power supply and ground | Supports 3.3 V ±10% operation; decoupling required per datasheet layout guidelines for PLC noise immunity. |
| SCL, SDA | I²C bus interface | Configurable as master or slave; internal pull-ups disabled by default-external resistors required for bus termination. |
| PLC_IN, PLC_OUT | Powerline analog transceiver interface | Differential FSK signal path to external coupling circuit; requires external low-pass filter and line driver/receiver stage. |
| XIN, XOUT | Crystal oscillator terminals | Drive 1–24 MHz crystal; used for precise timing of FSK modulation/demodulation and protocol timing. |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7] | Programmable GPIO | All pins support analog input (12-bit SAR ADC), digital I/O, interrupt, and configurable drive modes (25 mA sink / 10 mA source). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PLC PHY + Protocol Stack | Eliminates need for external modem IC and protocol controller-reduces BOM count and PCB area in endpoint nodes. |
| Configurable Analog PSoC Blocks | 12 rail-to-rail analog blocks enable real-time coupling circuit biasing, signal monitoring, and EMI filtering calibration without external op-amps. |
| CSMA-Based Network Layer | Prevents packet collisions in multi-node deployments (e.g., streetlight clusters), enabling scalable deployment without centralized scheduler. |
| On-Chip Voltage Reference | Stable internal reference supports accurate ADC measurements for line voltage sensing and fault detection in metering applications. |
| Programmable Gain Amplifier (PGA) | Tunable gain in receiver path compensates for variable line attenuation across different powerline topologies and distances. |
Applications
| Smart Electricity Metering | Home Automation Control Node |
|---|---|
Use Scenario: Two-way communication between utility meter and concentrator over 230 V AC mains for remote reading and firmware updates. IC Role / Device Role / Timing Role: Standalone PLC transceiver and protocol engine; handles physical layer modulation, MAC arbitration, and packet framing without host MCU. Use Value: Meets CENELEC EN 50065-1 spectral mask and achieves >99.5% packet success rate under burst noise conditions typical in residential grids. | Use Scenario: Wireless-lighting retrofit where existing AC wiring serves as data backbone for dimmer switches and occupancy sensors. IC Role / Device Role / Timing Role: Embedded PLC node with integrated analog sensing; monitors local load current and controls triac drivers via GPIO. Use Value: Eliminates wireless interference issues and battery replacement; leverages existing infrastructure for secure, deterministic control latency (<100 ms). |
| Industrial Building Management | Streetlight Monitoring System |
Use Scenario: HVAC zone controllers communicating over 24 V DC power rails in commercial buildings to report temperature and adjust setpoints. IC Role / Device Role / Timing Role: Low-voltage PLC endpoint with I²C interface to local MCU; manages coupling circuit bias and performs CRC-checked command relay. Use Value: Enables daisy-chained topology over 100 m distance with no additional wiring-reducing installation cost by ~35% vs. RS-485. | Use Scenario: Solar-powered LED streetlights exchanging status (voltage, temperature, lamp state) and receiving scheduling commands over municipal 110 V AC grid. IC Role / Device Role / Timing Role: Autonomous PLC node with sleep timer and wake-on-event; handles time-synchronized broadcast commands from central gateway. Use Value: Achieves 10-year battery life in solar-charged units via ultra-low-power idle mode (1.2 µA typical) and adaptive retransmission backoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar powerline communication applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST7580 | OFDM-based PHY, higher data rate (up to 132 kbps), requires external microcontroller for protocol stack. | Better suited for high-throughput smart grid AMI; lacks integrated MCU and analog resources for sensor fusion. | Select when bandwidth >5 kbps is required and host MCU is already present. |
| MAX2990 | FSK PHY only (no protocol stack), 1200 bps max, integrated line driver, no programmable analog blocks. | Targeted at simple repeater or bridge nodes; requires external MCU and ADC for sensor interfacing. | Select for cost-sensitive, fixed-function repeaters where firmware flexibility is not needed. |
Compared with ST7580 and MAX2990, CY8CPLC20-48LFXI uniquely integrates full OSI Layers 1–3 plus PSoC 1 programmable analog/digital resources-enabling self-contained, sensor-aware PLC endpoints without external components or host coordination.
Availability
CY8CPLC20-48LFXI is available at Aetrix Electronics and suitable for smart electricity metering, home automation control nodes, and industrial building management systems requiring stable component supply, long-term lifecycle support, and regulatory-compliant powerline communication capability.
Supply support for CY8CPLC20-48LFXI 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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global R&D and manufacturing infrastructure.
CY8CPLC20 belongs to the PSoC 1 family-designed specifically for mixed-signal embedded control applications where analog sensing, digital logic, and communications (including PLC) must be tightly integrated on a single chip.
FAQ
What coupling circuit is required for CY8CPLC20-48LFXI on 230 V AC mains?
The device requires an external passive coupling circuit comprising a series LC filter, isolation transformer, and common-mode choke, as specified in Cypress Application Note AN2197. Reference design CY8CPLC20-REF-230V provides validated bill-of-materials and layout for CENELEC compliance, including 1.2 kV surge protection and <100 µA leakage current.
Does CY8CPLC20-48LFXI support automatic network discovery and node addressing?
Yes-it implements a configurable logical addressing scheme supporting 8-bit (256 nodes), 16-bit (65,536 nodes), or 64-bit (2⁶⁴ nodes) addressing. Address assignment is performed via I²C during initialization or through broadcast configuration packets; no manual dip-switch setup is required.
Can the M8C core run user code while the PLC stack is active?
Yes-the PSoC 1 architecture allocates dedicated RAM and flash sections for the PLC firmware and user application. The M8C core uses hardware interrupts and priority-based task scheduling to interleave PLC protocol processing (e.g., packet reception, CRC check) with user-defined functions such as sensor polling or actuator control.
Is there production-ready development software for CY8CPLC20-48LFXI firmware?
Yes-PSoC Designer v5.4 (legacy but fully supported) provides drag-and-drop PLC User Modules (e.g., "PLC Modem", "PLC Network Stack"), auto-generated APIs, and full-speed ICE debugging. Cypress-provided example projects include complete I²C-controlled metering node firmware with CRC-verified command parsing and coupling circuit calibration routines.
CY8CPLC20-48LFXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Obsolete
- Data Format:
- FSK
- Baud Rates:
- 2.4k
- Voltage - Supply:
- 4.75V ~ 5.25V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-QFN (7x7)
CY8CPLC20-48LFXI FAQ
1.How can I place an order for CY8CPLC20-48LFXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8CPLC20-48LFXI 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 CY8CPLC20-48LFXI reliable?
The price and inventory of CY8CPLC20-48LFXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8CPLC20-48LFXI is usually 5 days.
3.What payment methods are accepted for CY8CPLC20-48LFXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8CPLC20-48LFXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8CPLC20-48LFXI?
CY8CPLC20-48LFXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8CPLC20-48LFXI 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 CY8CPLC20-48LFXI?
For technical support, including CY8CPLC20-48LFXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8CPLC20-48LFXI requirements.
6.How does Aetrix verify that CY8CPLC20-48LFXI is sourced from the original manufacturer or authorized distributors?
All CY8CPLC20-48LFXI 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 CY8CPLC20-48LFXI meets industry standards.
7.What is the process for return or replacement of CY8CPLC20-48LFXI?
All CY8CPLC20-48LFXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8CPLC20-48LFXI, 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 CY8CPLC20-48LFXI part is unused and in its original packaging.
Return procedure for CY8CPLC20-48LFXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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