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Infineon Technologies CY8CPLC20-48LTXI
- Part No.:
- CY8CPLC20-48LTXI
- Manufacturer:
- Infineon Technologies
- Category:
- Modems - ICs and Modules
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
CY8CPLC20-48LTXI.pdf
- Description:
- IC PLC PSOC CMOS 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,140
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Product details
Overview
CY8CPLC20-48LTXI from Infineon Technologies (formerly Cypress Semiconductor) is a fully integrated powerline communication (PLC) system-on-chip combining an FSK-based PLC PHY modem, network protocol stack (data link + transport + network layers), and a programmable PSoC 1 mixed-signal microcontroller core. It supports bidirectional half-duplex communication up to 2400 bps on AC/DC powerlines, includes 8-bit CRC error detection, CSMA collision avoidance, and I²C application layer interface at 50/100/400 kHz. Used in smart grid metering, home automation control nodes, and industrial building management systems.
For engineers reviewing the CY8CPLC20-48LTXI datasheet, CY8CPLC20-48LTXI pinout, CY8CPLC20-48LTXI application, or CY8CPLC20-48LTXI equivalent, key selection criteria include FSK carrier frequencies (131.8/133.3 kHz), integrated MAC/PHY co-processing, CENELEC EN 50065-1/FCC Part 15 compliance support via reference designs, PSoC 1 analog/digital block configurability, and 32 KB flash + 2 KB SRAM embedded memory architecture.
Technical Context
The CY8CPLC20-48LTXI implements a dedicated FSK physical layer with dual-tone modulation (131.8 kHz for logic '1', 133.3 kHz for logic '0'; configurable to 130.4 kHz), HF band-pass filtering (125–140 kHz), correlator-based demodulation, and hysteresis-comparator digitization - all optimized for noisy high- and low-voltage powerline channels. Its network protocol handles MAC-layer CSMA arbitration, 8-/16-/64-bit addressing, packet retransmission on CRC failure, and acknowledgment-based signaling.
It embeds a Harvard-architecture M8C CPU running at up to 24 MHz, supported by 12 analog PSoC blocks (enabling ADCs up to 14-bit, DACs up to 9-bit, PGAs, filters) and 16 digital PSoC blocks (including UARTs, SPI, timers, CRC/PRS modules). All peripherals are software-configurable and interconnectable via programmable routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PLC Modulation | Frequency Shift Keying (FSK) with fixed 131.8/133.3 kHz tones; supports 130.4 kHz option for wider deviation - enables robust noise immunity on lossy powerlines. |
| Max Data Rate | 2400 bps raw PHY rate - sufficient for command/control telemetry in smart metering and lighting networks. |
| CPU Core | M8C Harvard architecture, 24 MHz max clock - delivers deterministic real-time PLC protocol processing and application logic execution. |
| Memory | 32 KB flash (50k erase/write cycles), 2 KB SRAM, EEPROM emulation - supports field-upgradable firmware and persistent node configuration storage. |
| I²C Interface | Slave/master/multi-master mode, 50/100/400 kHz - allows host MCU or sensor hub to offload PLC stack management and data exchange. |
| Analog Resources | 12 programmable analog PSoC blocks supporting up to 14-bit ADC, 9-bit DAC, PGA, comparator - enables direct sensor interfacing and signal conditioning without external components. |
| Digital Peripherals | 16 digital PSoC blocks including UARTs (up to 4 full-duplex), SPI masters/slaves, timers, CRC/PRS - supports local control logic, diagnostics, and multi-protocol bridging. |
Pinout & Package
This device is housed in a 48-pin LQFP package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the 48-pin variant in the CY8CPLC20 datasheet (Rev. *O, Page 16).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Core logic and analog supply pins; require local decoupling for stable PLC transceiver operation. |
| PLC_TX, PLC_RX | PLC transceiver differential interface | Direct connection to external coupling circuit (e.g., transformer + EMI filter); defines signal path to powerline. |
| SCL, SDA | I²C bus interface | Supports host-controlled PLC configuration, status readback, and application-layer data transfer at up to 400 kHz. |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7] | Configurable GPIO | All pins support analog input (up to 12 channels), digital I/O, pull-up/down, open-drain, and interrupt generation - enables flexible system integration. |
| XIN, XOUT | Crystal oscillator terminals | Drive external 1–24 MHz crystal; used for precise timing of FSK modulation/demodulation and CPU clock generation. |
| RESET | Active-low reset input | Asynchronous hardware reset; required for reliable power-on initialization and fault recovery in harsh electrical environments. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PLC PHY + Protocol Stack | Eliminates need for external modem IC and protocol firmware development - reduces BOM count and accelerates time-to-market for powerline nodes. |
| CSMA-Based Network Arbitration | Prevents packet collisions in multi-node deployments (e.g., streetlight clusters), enabling scalable, self-healing mesh-like topologies without central coordinator. |
| Programmable Analog & Digital Blocks | Enables on-chip sensor signal conditioning, LED dimming PWM, relay control logic, and diagnostics - removes discrete op-amps, comparators, and logic ICs. |
| CENELEC EN 50065-1 / FCC Part 15 Reference Designs | Validated 110 V/240 V AC and 12 V/24 V AC/DC coupling circuits included - de-risks regulatory compliance and EMI testing for end equipment. |
| On-Chip Supervisory Circuit | Includes watchdog timer, sleep timer, and user-configurable low-voltage detection - ensures reliable operation during brownouts common on utility powerlines. |
Applications
| Smart Electricity Metering | Streetlight Control Network |
|---|---|
Use Scenario: Two-way communication between utility meters and concentrators over existing 240 V AC mains wiring. IC Role / Device Role / Timing Role: Full PLC node handling physical layer modulation, MAC arbitration, and application-layer command parsing - operates as endpoint in hierarchical AMI network. Use Value: Eliminates separate RF or wired backhaul; leverages ubiquitous infrastructure while meeting CENELEC spectral mask requirements via built-in FSK shaping and filtering. | Use Scenario: Centralized monitoring and dimming control of LED streetlights across city blocks using 110 V AC distribution lines. IC Role / Device Role / Timing Role: Local PLC node executing group-addressed broadcast commands and reporting lamp status via ACK/NACK - functions as intelligent edge controller. Use Value: Enables adaptive lighting schedules and fault detection without deploying new cabling; CSMA prevents command loss during peak traffic (e.g., dusk activation). |
| Industrial Building Automation | Home Energy Management System |
Use Scenario: Interconnecting HVAC controllers, thermostats, and energy monitors over 24 V DC low-voltage power rails in commercial facilities. IC Role / Device Role / Timing Role: Embedded PLC transceiver managing peer-to-peer device discovery and setpoint synchronization - acts as distributed network agent. Use Value: Avoids CAN or RS-485 wiring costs; 8-bit CRC and retransmission ensure reliable temperature setpoint updates despite motor-driven EMI on shared DC bus. | Use Scenario: Communicating between solar inverters, battery controllers, and smart plugs over residential 120 V AC branch circuits. IC Role / Device Role / Timing Role: Bidirectional PLC node implementing I²C-hosted application layer for energy consumption telemetry and load shedding commands - serves as gateway-adjacent endpoint. Use Value: Supports real-time demand response via standardized PLC messaging; 400 kHz I²C interface enables fast parameter updates from host MCU without interrupting powerline traffic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar powerline communication applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST7580 | Dedicated narrowband PLC modem (no embedded MCU); requires external microcontroller for protocol stack and application logic. | Lacks integrated PSoC resources - suitable only when full custom firmware control is needed and analog/digital peripheral integration is not required. | Select when prioritizing ultra-low-power receive modes or legacy ST75xx ecosystem compatibility over single-chip integration. |
| MAX2992 | G3-PLC compliant OFDM PHY (not FSK); higher throughput (up to 300 kbps) but larger footprint and higher complexity; no integrated MCU or protocol stack. | Targets advanced smart grid infrastructure requiring G3-PLC certification and IPv6 networking - not drop-in compatible with CENELEC-compliant FSK systems. | Choose for next-gen utility deployments needing G3-PLC interoperability and higher bandwidth; avoid for cost-sensitive, low-data-rate control nodes. |
Compared with ST7580 and MAX2992, CY8CPLC20-48LTXI uniquely integrates FSK PHY, full network protocol stack, and programmable mixed-signal MCU in one die - reducing component count, PCB area, and firmware development effort for sub-2.4 kbps control-oriented PLC applications.
Availability
CY8CPLC20-48LTXI is available at Aetrix Electronics and suitable for smart metering endpoints, streetlight controllers, and industrial building automation nodes requiring stable component supply and long-term lifecycle support.
Supply support for CY8CPLC20-48LTXI 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 - formed through the acquisition of Cypress Semiconductor in 2020.
CY8CPLC20 belongs to the PSoC 1 family, designed specifically for highly integrated, cost-sensitive embedded control applications where analog signal conditioning, digital logic, and communications (especially powerline) must coexist on a single chip.
FAQ
What voltage levels does CY8CPLC20-48LTXI support for powerline coupling?
CY8CPLC20-48LTXI itself operates from 3.3 V or 5 V logic supply, but its PLC transceiver supports coupling to 110 V/240 V AC mains and 12 V/24 V AC/DC powerlines via external reference circuits. These circuits comply with CENELEC EN 50065-1:2001 and FCC Part 15, and are validated for noise immunity and spectral emission limits.
Does CY8CPLC20-48LTXI require external memory for protocol stack operation?
No. The device integrates 32 KB of on-chip flash memory storing both the PLC physical and network protocol stack firmware and user application code. The 2 KB SRAM provides runtime data space for packet buffers, address tables, and stack variables - eliminating need for external RAM or Flash in typical implementations.
Can the FSK carrier frequencies be modified beyond the default 131.8/133.3 kHz?
Yes. The CY8CPLC20-48LTXI supports configuration of the logic '1' tone to 130.4 kHz for increased frequency deviation - improving noise margin in high-interference environments. This is implemented via register settings in the PLC core and does not require hardware changes or external components.
Is PSoC Designer still supported for CY8CPLC20-48LTXI development?
Yes. PSoC Designer v5.4 remains the official, fully supported IDE for CY8CPLC20-48LTXI. It includes pre-characterized PLC User Modules (e.g., "PLC Modem", "PLC Network Stack"), drag-and-drop analog/digital block configuration, automatic API generation, and full-speed ICE debugging - with no license fees or subscription requirements.
CY8CPLC20-48LTXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tray
- 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)
CY8CPLC20-48LTXI FAQ
1.How can I place an order for CY8CPLC20-48LTXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8CPLC20-48LTXI 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 CY8CPLC20-48LTXI reliable?
The price and inventory of CY8CPLC20-48LTXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8CPLC20-48LTXI is usually 5 days.
3.What payment methods are accepted for CY8CPLC20-48LTXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8CPLC20-48LTXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8CPLC20-48LTXI?
CY8CPLC20-48LTXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8CPLC20-48LTXI 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 CY8CPLC20-48LTXI?
For technical support, including CY8CPLC20-48LTXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8CPLC20-48LTXI requirements.
6.How does Aetrix verify that CY8CPLC20-48LTXI is sourced from the original manufacturer or authorized distributors?
All CY8CPLC20-48LTXI 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 CY8CPLC20-48LTXI meets industry standards.
7.What is the process for return or replacement of CY8CPLC20-48LTXI?
All CY8CPLC20-48LTXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8CPLC20-48LTXI, 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 CY8CPLC20-48LTXI part is unused and in its original packaging.
Return procedure for CY8CPLC20-48LTXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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