Silex Unwired

Silex Technology to Release Bluetooth® 5.0 Low Energy Module with Renesas RX Microcontroller

Easy-to-Develop Secure Wireless Solution for IoT Devices

SANTA ANA, Calif., June 1, 2020 --- Silex Technology, a global leader in wired and wireless networking solutions, will release a new microcontroller module, SX-23BT, on August 24, 2020. The SX-23BT supports Bluetooth® 5.0 Low Energy using RX23W, a 32-bit RX microcontroller from Renesas Electronics Corporation.

The SX-23BT includes all of the functions that a 32-bit microcontroller and Bluetooth® 5.0 Low Energy offers, such as long-range support, mesh networking capabilities and a mounted chip antenna. The product is radio-certified for Japan, North America, and Europe, enabling IoT device manufacturers to reduce the time and effort required to obtain international certification.

To enhance the efficiency of product development, the SX-23BT provides device manufacturers with the ability to utilize the development environment and software assets found in Renesas's RX23W, in addition to Renesas's abundant application development support tools.

Furthermore, the IoT devices 0.7mm pitch LGA package can reduce total BOM and manufacturing costs by decreasing the number of printed circuit board layers to enable the use of existing manufacturing equipment.

In application environments that require high data security, including hospitals, factories, and offices, cyberattacks targeting IoT devices have become increasingly serious. To counteract these potential cyber-threats, the SX-23BT includes a hardware high-speed cryptographic processing function.

"I am pleased to announce that Silex has chosen our RX23W with Bluetooth® 5.0 Low Energy and hardware security IP for their microcontroller module," said Mr. Sakae Ito, vice president of IoT Platform Business Division at Renesas Electronics Corporation. "Silex's long-established wireless module development know-how, combined with Renesas's RX23W, featuring our high-security function, will accelerate and streamline IoT device development across the market."

SX-23BT’s Main Features:

  • Equipped with RX23W made by Renesas ElectronicsSX-23BT_Website
    • ROM 512KB / RAM 64KB
    • E2 Flash 8KB
    • Trusted Secure IP Lite (AES / TRNG)
  • Full support of Bluetooth® 5.0 Low Energy
  • AES-CCM (128 bit) encryption circuit for Bluetooth®
  • Chip antenna or external antenna terminal to select from
  • Main interface
    • 0 full speed x 1
    • CAN x 1
    • SD Host I / F x 1
  • Radio certification (planned)
    • TELEC (Japan)
    • FCC (US)
    • ISED (Canada)
    • CE (Europe)
  • Industrial temperature: -40C to 85C


About Silex Technology America, Inc.

Silex Technology builds on more than 40 years of hardware and software connectivity know-how and IP, custom design development experience, and in-house manufacturing capabilities, bringing value to customers with a foundation of technical expertise. With relentless attention to quality, exclusive access to Qualcomm Atheros expertise, and strategic partnerships with leading semiconductor providers, Silex Technology is the global leader in reliable Wi-Fi connectivity for products ranging from a medical device to a document imaging product to a video or digital display. With Silex Technology, customers get a single vendor that provides hardware and software support from design through manufacturing, resulting in the creation of one successful product after the next. For more information, please visit

About Renesas Electronics Corporation

Renesas Electronics Corporation (TSE: 6723) delivers trusted embedded design innovation with complete semiconductor solutions that enable billions of connected, intelligent devices to enhance the way people work and live. A global leader in microcontrollers, analog, power, and SoC products, Renesas provides comprehensive solutions for a broad range of automotive, industrial, infrastructure, and IoT applications that help shape a limitless future. Learn more at