CC-WMX-LD79-VK-B WiFi Transceiver Module Equivalent & Substitute Parts

Part Overview

The CC-WMX-LD79-VK-B is a WiFi 802.11a/b/g/n transceiver module manufactured by Digi, part of the ConnectCore® i.MX53 series. This module operates across 2.4GHz and 5GHz frequency bands with U.FL chassis mount antenna connectivity and supports multiple serial interfaces including Ethernet, I2C, I2S, JTAG, SPI, SDIO, UART, and USB.

The CC-WMX-LD79-VK-B is classified as obsolete. Identifying equivalent substitute parts is necessary for system redesign, long-term production planning, and ensuring continued availability of compatible WiFi transceiver modules for applications requiring similar RF performance and interface capabilities.

Substiute Parts

CC-WMX-LD79-VK-B

DigiIn Stock: 1058CC-WMX-LD79-VK-B Datasheet

Current PartRFQ

ATWINC1500-MR210PB

Microchip TechnologyIn Stock: 2308ATWINC1500-MR210PB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CC-WMX-LD79-VK-B is evaluated based on the following critical parameters:

RF Protocol Compatibility: The main part supports 802.11a/b/g/n across dual bands (2.4GHz and 5GHz). Substitute parts must maintain backward compatibility with 802.11b/g/n protocols at minimum to ensure functional equivalence in legacy systems.

Frequency Band Coverage: The original module operates on 2.4GHz and 5GHz. Substitutes operating on 2.4GHz maintain core WiFi connectivity for most applications, though 5GHz capability represents a functional reduction.

Power Output and Sensitivity: Output power of 17dBm and sensitivity of -94dBm define the RF link budget. Substitute parts with comparable or superior specifications (18.5dBm output, -95dBm sensitivity) maintain equivalent range and coverage performance.

Serial Interface Support: The main part provides Ethernet, I2C, I2S, JTAG, SPI, SDIO, UART, and USB. Substitutes must support a minimum subset of these interfaces (I2C, SPI, UART) for basic system integration.

Antenna Configuration: The original uses U.FL chassis mount with no integrated antenna. Substitutes with integrated or trace antennas represent a different mechanical and RF design approach but may be functionally equivalent depending on application requirements.

Mounting Type: The original is chassis mount. Surface mount alternatives require PCB redesign but offer different integration options.

Operating Temperature Range: Both parts operate across -40°C ~ 85°C, ensuring thermal compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ATWINC1500-MR210PB from Microchip Technology is identified as an active substitute for the obsolete CC-WMX-LD79-VK-B. Both parts share identical ECCN classification (5A992C) and REACH compliance status, confirming regulatory equivalence.

Product Status Advantage: The ATWINC1500-MR210PB maintains active product status with current manufacturing and supply chain availability, addressing the obsolescence of the original part.

Compliance Certification: The ATWINC1500-MR210PB is ROHS3 compliant, meeting modern environmental and material restriction standards. Both parts are REACH unaffected, confirming chemical compliance.

RF Performance: The substitute provides superior data rate (72.2Mbps vs. 65Mbps) and equivalent sensitivity (-95dBm vs. -94dBm). Output power is marginally higher (18.5dBm vs. 17dBm), supporting equivalent link budget performance.

Power Efficiency: The ATWINC1500-MR210PB demonstrates significantly lower current consumption during receive (61mA vs. 700mA) and transmit (265mA vs. 700mA) operations, providing substantial power efficiency gains for battery-powered or thermally constrained applications.

Protocol and Frequency Considerations: The substitute supports 802.11b/g/n on 2.4GHz only, eliminating 802.11a and 5GHz capability. Applications requiring dual-band or 802.11a operation require alternative solutions.

Interface and Memory Trade-offs: The substitute provides reduced serial interface support (I2C, SPI, UART vs. eight interfaces) and significantly lower memory (4MB Flash, 128kB RAM vs. 512MB Flash, 1GB RAM). System redesign is required for applications dependent on Ethernet, I2S, JTAG, SDIO, or USB connectivity, or requiring substantial onboard storage.

Mechanical Integration: The substitute uses surface mount with integrated trace antenna, requiring PCB redesign from the original chassis mount U.FL configuration. This change eliminates external antenna flexibility but simplifies board layout.

Frequently Asked Questions (FAQ)

Q: Can the ATWINC1500-MR210PB directly replace the CC-WMX-LD79-VK-B without redesign?

A: Direct replacement is not possible. The substitute differs in mounting type (surface mount vs. chassis mount), antenna configuration (integrated vs. U.FL), serial interface subset, and memory capacity. PCB redesign and firmware adaptation are required.

Q: Does the ATWINC1500-MR210PB support 5GHz operation?

A: No. The substitute operates on 2.4GHz only. Applications requiring 5GHz connectivity must identify alternative parts.

Q: What is the impact of reduced serial interfaces on system integration?

A: The substitute provides I2C, SPI, and UART only. Applications using Ethernet, I2S, JTAG, SDIO, or USB must implement alternative connectivity methods or identify parts with broader interface support.

Q: How does the memory reduction affect system capability?

A: The substitute provides 4MB Flash and 128kB RAM compared to 512MB Flash and 1GB RAM. Applications requiring large firmware images, extensive data buffering, or complex processing must evaluate memory constraints during redesign.

Q: Are both parts compliant with export control and environmental regulations?

A: Yes. Both parts share ECCN 5A992C classification and REACH unaffected status. The substitute adds ROHS3 compliance, meeting current environmental standards.

Q: What are the power consumption implications of switching to the ATWINC1500-MR210PB?

A: The substitute reduces receive current from 700mA to 61mA and transmit current from 700mA to 265mA. This represents significant power efficiency improvement, particularly beneficial for battery-powered applications or systems with thermal constraints.

Q: Can an external antenna be used with the ATWINC1500-MR210PB?

A: The substitute features an integrated trace antenna. External antenna options depend on module design and are not specified in the provided parameters.