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Home > Products > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

Infineon Technologies CY7C53120E4-40SXIT

Name: CY7C53120E4-40SXIT
Brand: Infineon Technologies
SKU: CY7C53120E4-40SXIT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY7C53120E4-40SXIT

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: 32-SOIC (0.445", 11.30mm Width)

Datasheet:: CY7C53120E4-40SXIT.pdf

Description:: IC PROCESSOR NEURON 32-SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CY7C53120E4-40SXIT from Cypress Semiconductor is a Neuron Chip network processor implementing a full LonWorks node on a single die, integrating three 8-bit pipelined processors, 12 KB ROM with embedded LonTalk protocol firmware, 4096 bytes of on-chip Flash memory, 2048 bytes of SRAM, and a configurable 5-pin communications port. It operates at up to 40 MHz over –40°C to +85°C and targets intelligent building automation, industrial control, and HVAC systems requiring self-contained, field-upgradable distributed nodes.

For engineers reviewing the CY7C53120E4-40SXIT datasheet, CY7C53120E4-40SXIT pinout, CY7C53120E4-40SXIT application, or CY7C53120E4-40SXIT equivalent, key selection criteria include its 40 MHz max clock, 4096-byte Flash capacity, differential communications port configuration, 48-bit unique ID, and support for twisted-pair, powerline, and RF transceivers in LonWorks networks.

Technical Context

The CY7C53120E4-40SXIT implements the complete LonTalk protocol stack in 12 KB of factory-programmed ROM, eliminating external firmware storage. Its three independent 8-bit processors execute application code, network traffic handling, and media access control concurrently - enabling deterministic real-time response without OS overhead.

The 5-pin CP port supports three modes: Single-Ended (CP0/CP1), Special Purpose (CP0–CP4 with frame/bit clocks), and Differential (CP0/CP1 receiver + CP2/CP3 driver), with programmable hysteresis (8 levels) and glitch filtering (4 levels) for robust noise immunity on noisy industrial media.

Key Specifications

Parameter	Value and Actual Design Meaning
Max Clock Frequency	40 MHz - Enables full-speed LonTalk operation at 1.25 Mbps on differential media with deterministic timing margins.
Flash Memory	4096 bytes - Stores full application firmware; supports in-field updates via LonTalk network without reprogramming hardware.
SRAM	2048 bytes - Buffers inbound/outbound network packets, system variables, and application state with zero external memory dependency.
ROM Firmware	12 KB - Contains complete OSI Layers 1–7 LonTalk protocol implementation, eliminating external protocol stack integration effort.
Operating Temp	–40°C to +85°C - Qualified for uncontrolled industrial environments including HVAC ducts, lighting panels, and factory-floor controllers.
I/O Sink Current	20 mA on I/O0–I/O3 - Directly drives LEDs, small relays, or optocouplers without external buffers in sensor/actuator interfaces.
Unique ID	48-bit factory-programmed - Enables zero-touch commissioning and automated topology discovery in large-scale LonWorks installations.

Pinout & Package

44-pin TQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, with exposed thermal pad. All VDD (pins 9,10,19,29,38,41) and VSS (pins 7,13,16,26,37) pins require low-inductance local decoupling.

Pin/Terminal	Circuit Role	Design Meaning
CLK1 (Pin 15)	External clock input	Accepts 40 MHz CMOS-level clock; must be stable before RESET release to prevent boot failure.
CLK2 (Pin 14)	Oscillator output	Drives crystal (if used); left open when external clock applied to CLK1.
RESET (Pin 40)	Active-low reset	Internal pull-up; requires 100–1000 pF external capacitor for reliable power-on reset timing.
SERVICE (Pin 5)	Service mode control	Alternates I/O at 76 Hz; used for device identification and firmware download initiation.
CP0–CP4 (Pins 20,21,18,24,25)	Communications port	Configurable 5-pin interface supporting differential Manchester encoding for twisted-pair or powerline transceivers.
I/O0–I/O3 (Pins 4,3,2,43)	High-sink I/O	20 mA sink capability; supports timer outputs (T1→I/O0, T2→I/O1) for PWM or pulse generation.
I/O4–I/O7 (Pins 42,36,35,32)	Configurable I/O	Internal pull-ups; accepts timer inputs (T1/T2) for edge-triggered event capture from sensors or encoders.

Key Features

Feature	Design Value
Three concurrent 8-bit processors	Enables simultaneous execution of application logic, network packet processing, and MAC-layer arbitration without scheduling conflicts.
Differential communications port	CP0/CP1 receiver + CP2/CP3 driver with programmable hysteresis (7 levels) and glitch filter (4 settings) for >60 dB noise rejection on 24 VAC powerline.
On-chip LVD circuit	Trips at 4.1 ± 0.3 V to halt CPU and protect Flash contents during brown-out, preventing corruption of network configuration data.
11-pin programmable I/O port	Supports 34 preprogrammed I/O drivers (e.g., 1-wire, PWM, quadrature decode) - reduces firmware development time by >70% for common sensor/actuator interfaces.
48-bit unique ID	Factory-lasered per unit; enables automatic node addressing and eliminates manual DIP-switch configuration in multi-node deployments.

Applications

Building Automation System

Industrial Machine Controller

Use Scenario: Distributed temperature, occupancy, and lighting control across 50+ rooms in commercial office buildings.

IC Role / Device Role / Timing Role: Full LonWorks node executing application logic, LonTalk protocol, and media access - no external microcontroller or protocol stack required.

Use Value: Reduces BOM count by 3–5 components per node; enables remote firmware updates and automatic topology mapping via 48-bit ID.

Use Scenario: Real-time monitoring and control of motor speed, safety interlocks, and HMI status in CNC machine tools.

IC Role / Device Role / Timing Role: Standalone controller managing I/O (via I/O0–I/O3 sink drivers), serial comms (CP port), and network synchronization (40 MHz clock).

Use Value: 20 mA I/O sink directly drives indicator LEDs and relay coils; deterministic 40 MHz timing ensures sub-100 µs response to emergency stop signals.

Smart HVAC Node

Energy Management Gateway

Use Scenario: Field-deployable thermostat node interfacing with NTC sensors, valve actuators, and RS-485 BACnet gateways.

IC Role / Device Role / Timing Role: Network processor handling LonTalk messaging, analog/digital I/O conditioning, and local PID loop execution.

Use Value: 4096-byte Flash stores full application + calibration tables; 2048-byte SRAM buffers burst data for cloud upload during network outages.

Use Scenario: Substation-level energy meter aggregation using powerline communication to collect kWh data from 200+ smart meters.

IC Role / Device Role / Timing Role: Communications hub with differential CP port configured for EIA-485-compatible powerline transceiver interface.

Use Value: Programmable hysteresis (level 5: 0.121–0.203×VDD) rejects 50/60 Hz harmonics; glitch filter F=2 suppresses 800 ns transients from switching loads.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LonWorks network processor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY7C53120E2-10SI	10 MHz max clock, 2048-byte Flash, 10 KB ROM, SOIC-32 package	Limited to low-bandwidth sensor nodes (<100 kbps); lacks 40 MHz timing headroom for complex control loops	Select only for cost-sensitive, low-compute applications where external memory expansion is unnecessary.
CY7C53150-20AI	64-pin TQFP, 512-byte Flash, 64 KB external memory interface, 20 MHz clock, 5.0 V only	Requires external Flash/EPROM and address/data bus routing; higher PCB complexity and BOM cost	Choose only when application code exceeds 4 KB and field update is not required - e.g., fixed-function legacy OEM designs.

Compared with CY7C53120E2-10SI, the CY7C53120E4-40SXIT delivers 4× clock speed and 2× Flash for real-time control; versus CY7C53150-20AI, it eliminates external memory design risk while retaining full LonTalk compliance and field-upgradability.

Availability

CY7C53120E4-40SXIT is available at Aetrix Electronics and suitable for building automation systems, industrial machine controllers, smart HVAC nodes, and energy management gateways requiring stable component supply across extended product lifecycles.

Supply support for CY7C53120E4-40SXIT 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

Cypress Semiconductor (now part of Infineon Technologies) is a fabless semiconductor company specializing in embedded systems, connectivity, and programmable solutions for industrial, automotive, and IoT markets.

The CY7C53120E4 belongs to the Neuron Chip family - designed specifically to implement standards-compliant LonWorks nodes with integrated protocol stack, deterministic real-time processing, and robust physical-layer communications for distributed control networks.

FAQ

What is the purpose of the SERVICE pin on CY7C53120E4-40SXIT?

The SERVICE pin (Pin 5) is an active-low, bidirectional signal that toggles at 76 Hz during normal operation. It serves two primary functions: enabling device identification during network commissioning and initiating firmware download mode when asserted during power-up. Its built-in configurable pull-up simplifies board design by eliminating external resistors in most configurations.

Can CY7C53120E4-40SXIT operate with a crystal oscillator instead of an external clock?

Yes - CLK1 accepts either an external CMOS clock or a crystal oscillator connected between CLK1 and CLK2. When using a crystal, CLK2 must be left unconnected (high-impedance). The internal oscillator circuit supports fundamental-mode crystals up to 40 MHz; startup stabilization time must be accounted for in the RESET timing sequence to prevent boot failure.

How does the CP port support different transceiver types?

The CP0–CP4 port supports three configurable modes: Single-Ended (CP0/CP1 for UART-style comms), Special Purpose (CP0–CP4 for frame/bit clock handoff to intelligent transceivers), and Differential (CP0/CP1 receiver + CP2/CP3 driver for EIA-485 or powerline). Mode selection is controlled entirely by firmware configuration - no hardware changes needed.

Is the 48-bit ID user-programmable or factory-assigned?

The 48-bit ID is laser-programmed at wafer test and permanently stored in nonvolatile memory. It cannot be altered in the field or during programming. This guarantees global uniqueness across all LonWorks deployments and enables automated network discovery, addressing, and diagnostics without manual configuration.

CY7C53120E4-40SXIT Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: Neuron®

Package/Case:: 32-SOIC (0.445", 11.30mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Applications:: Network Processor

Core Processor:: Pipelined

Program Memory Type:: FLASH (4kB), ROM (12kB)

Controller Series:: CY7C531xx

RAM Size:: 2K x 8

Interface:: Serial

Number of I/O:: 11

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 32-SOIC

CY7C53120E4-40SXIT FAQ

1.How can I place an order for CY7C53120E4-40SXIT through Aetrix?

Please submit a Request for Quotation (RFQ) for CY7C53120E4-40SXIT 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 CY7C53120E4-40SXIT reliable?

The price and inventory of CY7C53120E4-40SXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C53120E4-40SXIT is usually 5 days.

3.What payment methods are accepted for CY7C53120E4-40SXIT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C53120E4-40SXIT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY7C53120E4-40SXIT?

CY7C53120E4-40SXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY7C53120E4-40SXIT 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 CY7C53120E4-40SXIT?

For technical support, including CY7C53120E4-40SXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C53120E4-40SXIT requirements.

6.How does Aetrix verify that CY7C53120E4-40SXIT is sourced from the original manufacturer or authorized distributors?

All CY7C53120E4-40SXIT 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 CY7C53120E4-40SXIT meets industry standards.

7.What is the process for return or replacement of CY7C53120E4-40SXIT?

All CY7C53120E4-40SXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C53120E4-40SXIT, 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 CY7C53120E4-40SXIT part is unused and in its original packaging.

Return procedure for CY7C53120E4-40SXIT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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