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Infineon Technologies CY8CPLC20-48LTXIT
- Part No.:
- CY8CPLC20-48LTXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Modems - ICs and Modules
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
CY8CPLC20-48LTXIT.pdf
- Description:
- IC PLC CHIP CMOS 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,382
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Product details
Overview
CY8CPLC20-48LTXIT from Infineon Technologies (formerly Cypress) is a fully integrated powerline communication (PLC) system-on-chip combining an FSK modem PHY, ISO/OSI-compliant network protocol stack (data link + transport + network layers), and a programmable PSoC 1 mixed-signal core. It delivers bidirectional half-duplex communication up to 2400 bps over AC/DC powerlines, supports 8-bit CRC error detection and retransmission, and integrates I²C (50/100/400 kHz), UARTs, ADCs, DACs, and programmable analog/digital blocks for embedded PLC node design in smart grid and building automation.
For engineers reviewing the CY8CPLC20-48LTXIT datasheet, CY8CPLC20-48LTXIT pinout, CY8CPLC20-48LTXIT application, or CY8CPLC20-48LTXIT equivalent, key selection criteria include FSK carrier frequencies (131.8/133.3 kHz), CENELEC EN 50065-1/FCC Part 15 compliance support, integrated MAC+network protocol, 24 MHz M8C core, and 48-pin TQFP package with 32 KB flash and 2 KB SRAM.
Technical Context
The CY8CPLC20-48LTXIT implements a dedicated physical layer using frequency shift keying with two configurable carrier frequencies (131.8 kHz for logic '1', 133.3 kHz for logic '0'; alternate 130.4 kHz option available), enabling robust demodulation via HF band-pass filtering, mixer-based heterodyning, IF filtering, correlation, and hysteresis-comparator digitization. Its receiver includes programmable gain amplification and external low-pass filter interface for noise-adaptive signal conditioning.
The on-chip network protocol handles bidirectional half-duplex communication with CSMA collision avoidance, 8-bit CRC error detection, automatic packet retransmission on loss, and logical addressing supporting up to 256 nodes (8-bit) or 65,536 nodes (16-bit extended). It operates independently of host MCU control, offloading full OSI Layers 2–3 processing from the application layer.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Modulation | FSK with dual carrier frequencies: 131.8 kHz (logic '1') and 133.3 kHz (logic '0'); enables reliable demodulation under narrowband interference. |
| Max Data Rate | 2400 bps raw data rate; defines maximum throughput for telemetry, metering, and control commands over noisy powerlines. |
| Protocol Stack | Integrated MAC + transport + network layers per ISO/OSI model; eliminates need for external protocol firmware or host CPU overhead. |
| Core Processor | M8C Harvard architecture running at up to 24 MHz; executes user application logic, peripheral configuration, and I²C/SPI interface management. |
| Memory | 32 KB flash (50,000 erase/write cycles) + 2 KB SRAM; sufficient for PLC protocol stack, application code, and runtime variables in standalone node designs. |
| I²C Interface | Slave/master/multi-master support up to 400 kHz; allows direct connection to microcontrollers, sensors, or host processors without level-shifting. |
| Analog Resources | 12 programmable analog PSoC blocks: support up to 14-bit ADC, 9-bit DAC, PGA, filters, comparators - enable local sensing and signal conditioning within same chip. |
Pinout & Package
This device is housed in a 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch) package with exposed thermal pad, rated for industrial temperature range (–40 °C to +85 °C) and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary 3.3 V supply domain; decoupling required per datasheet layout guidelines to maintain PHY signal integrity. |
| PLC_IN, PLC_OUT | Powerline coupling interface | Differential analog interface to external coupling circuit (e.g., transformer + LC filter); connects directly to AC/DC powerline via external passive network. |
| SCL, SDA | I²C bus interface | Supports 50/100/400 kHz operation; enables host processor to configure PLC parameters, read status, and exchange payload data. |
| TXD, RXD | UART serial interface | Full-duplex asynchronous communication path for debug, diagnostics, or auxiliary control channel independent of PLC traffic. |
| XTAL1, XTAL2 | Crystal oscillator terminals | Drive internal 24 MHz clock source; requires 24 MHz fundamental-mode crystal with load capacitance matching specified in datasheet. |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7] | Configurable GPIO | 25 mA sink / 10 mA source capability; supports analog input (12 channels), interrupt, pull-up/down, open-drain - used for status LEDs, buttons, sensor interfaces. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated FSK Modem PHY | On-chip transmitter/receiver with programmable gain amplifier, HF/IF filtering, correlator, and hysteresis comparator - eliminates discrete RF front-end components and calibration effort. |
| Self-contained Network Protocol | Hardware-accelerated MAC + network layer handling CSMA, ACK/NACK, retransmission, and 8-bit CRC - reduces host CPU load and ensures deterministic latency in time-critical PLC networks. |
| Programmable Analog Blocks | 12 rail-to-rail analog PSoC blocks configurable as ADC, DAC, PGA, or comparator - enables local analog sensor interfacing without external signal chain ICs. |
| Flexible Digital Peripherals | 16 digital PSoC blocks supporting timers, PWMs, UARTs, SPI, CRC, and PRS - allows custom protocol bridging, LED dimming, or pulse counting synchronized to PLC events. |
| EEPROM Emulation | Flash-based nonvolatile storage for configuration parameters and event logs - avoids external EEPROM and simplifies BOM while maintaining data retention across power cycles. |
Applications
| Smart Electricity Metering | Streetlight Control Network |
|---|---|
Use Scenario: Two-way communication between utility meters and concentrators over existing 240 V AC mains wiring in residential and commercial buildings. IC Role / Device Role / Timing Role: Standalone PLC node performing physical layer modulation/demodulation, packet framing, error correction, and local application logic execution. Use Value: Eliminates need for separate modem and microcontroller; reduces bill-of-materials and board space while meeting CENELEC EN 50065-1 spectral mask requirements. | Use Scenario: Centralized monitoring and dimming control of LED streetlights connected to 110 V AC distribution lines in municipal infrastructure. IC Role / Device Role / Timing Role: Edge node transceiver implementing CSMA-based multi-node arbitration and broadcast command reception with local light-level adaptation. Use Value: Enables scalable deployment without additional cabling; leverages built-in 16-bit extended addressing to uniquely identify >65,000 fixtures in large urban networks. |
| Industrial Building Automation | Home Energy Management System |
Use Scenario: Interconnection of HVAC controllers, thermostats, and energy monitors across 24 V DC low-voltage power rails in commercial facilities. IC Role / Device Role / Timing Role: Embedded PLC transceiver managing peer-to-peer messaging and topology discovery in distributed control systems. Use Value: Provides deterministic half-duplex timing with 2400 bps throughput and 8-bit CRC validation - ensuring reliable command delivery in electrically noisy environments. | Use Scenario: Communication between solar inverters, battery storage units, and smart plugs over 12 V DC or 120 V AC home wiring for real-time load balancing. IC Role / Device Role / Timing Role: Integrated PHY + protocol stack executing FCC Part 15-compliant transmission and application-layer I²C interface to host MCU. Use Value: Reduces system integration complexity by consolidating physical and link-layer functions into single chip - accelerating time-to-market for UL-certified residential energy products. |
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 (not FSK); supports higher data rates (up to 13.2 kbps) but requires more complex coupling and greater spectral occupancy. | Targets broadband PLC (BPL) in ETSI EN 50561-1 environments; less suitable for narrowband CENELEC-compliant deployments. | Select when higher throughput and multi-carrier resilience are prioritized over cost and simplicity in low-noise grids. |
| MAX2992 | Dedicated narrowband FSK modem only (no integrated protocol stack or MCU); requires external microcontroller for MAC/network layer implementation. | Used in designs where protocol flexibility or legacy stack porting is required; increases component count and firmware development effort. | Select when full control over protocol behavior is needed or when migrating from legacy FSK solutions with existing software investment. |
Compared with ST7580 and MAX2992, CY8CPLC20-48LTXIT uniquely combines FSK PHY, ISO/OSI Layers 2–3 protocol acceleration, and a programmable PSoC 1 core in one die - delivering lowest system-level BOM count and fastest time-to-prototype for CENELEC/FCC narrowband PLC nodes.
Availability
CY8CPLC20-48LTXIT is available at Aetrix Electronics and suitable for smart metering, streetlight control, and industrial building automation requiring stable component supply, long-term lifecycle support, and regulatory-compliant powerline communication capability.
Supply support for CY8CPLC20-48LTXIT 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 is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive, industrial, and IoT solutions with strong emphasis on reliability and security.
The CY8CPLC20 belongs to Infineon's legacy PSoC 1 PLC product line, designed specifically for cost-sensitive, standards-compliant narrowband powerline communication nodes in smart grid and energy management systems.
FAQ
What powerline voltage ranges does CY8CPLC20-48LTXIT support?
The device itself operates from 3.3 V and interfaces to powerlines via external coupling circuits. Cypress provides reference designs for 110 V/240 V AC and 12 V/24 V AC/DC powerlines, all compliant with CENELEC EN 50065-1:2001 and FCC Part 15. The chip's analog front-end is optimized for these ranges through programmable gain and filtering.
Does CY8CPLC20-48LTXIT require an external microcontroller?
No - it integrates a 24 MHz M8C processor core, 32 KB flash, and 2 KB SRAM, enabling standalone operation. Users can implement full application logic, sensor interfacing, and PLC protocol management without external MCU. I²C or UART interfaces allow optional host supervision if needed.
How is the FSK carrier frequency configured?
The default FSK frequencies are 131.8 kHz (logic '1') and 133.3 kHz (logic '0'). The logic '1' frequency can be reconfigured to 130.4 kHz via register setting to increase frequency deviation, improving noise immunity in high-interference environments - documented in Register Reference section of datasheet Rev. *O.
Is development software still supported for CY8CPLC20-48LTXIT?
Yes - PSoC Designer™ v5.4 remains the official IDE, freely available from Infineon's website. It includes drag-and-drop peripheral configuration, auto-generated APIs, full-speed emulation, and trace memory debugging. Legacy application notes (e.g., AN75320, AN74170) and reference designs remain accessible and validated for this part.
CY8CPLC20-48LTXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Data Format:
- FSK
- Baud Rates:
- 2.4k
- Voltage - Supply:
- 4.75V ~ 5.25V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-QFN (7x7)
CY8CPLC20-48LTXIT FAQ
1.How can I place an order for CY8CPLC20-48LTXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8CPLC20-48LTXIT 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 CY8CPLC20-48LTXIT reliable?
The price and inventory of CY8CPLC20-48LTXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8CPLC20-48LTXIT is usually 5 days.
3.What payment methods are accepted for CY8CPLC20-48LTXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8CPLC20-48LTXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8CPLC20-48LTXIT?
CY8CPLC20-48LTXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8CPLC20-48LTXIT 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 CY8CPLC20-48LTXIT?
For technical support, including CY8CPLC20-48LTXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8CPLC20-48LTXIT requirements.
6.How does Aetrix verify that CY8CPLC20-48LTXIT is sourced from the original manufacturer or authorized distributors?
All CY8CPLC20-48LTXIT 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 CY8CPLC20-48LTXIT meets industry standards.
7.What is the process for return or replacement of CY8CPLC20-48LTXIT?
All CY8CPLC20-48LTXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8CPLC20-48LTXIT, 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 CY8CPLC20-48LTXIT part is unused and in its original packaging.
Return procedure for CY8CPLC20-48LTXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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