Lapis ML7436N multiband wireless LSI,
Supports multi-hop communication and wireless firmware updates
Equipped with encryption-compatible HW engine and controller


On the 19th, Rohm Group's Lapis Technology announced that it has developed the 'ML7436N', a multiband wireless communication LSI that is optimal for building broadband networks required by smart factories and logistics, as well as infrastructure such as smart meters and streetlights.

The new product integrates a high-speed 32-bit Arm® Cortex®-M3 core and 1024KB of memory. This memory can accommodate large-scale programs and large amounts of data for multi-hop relay communications and over-the-air firmware updates (FOTA). This enables the system to be networked on a wide area mesh network and reduces maintenance efforts.

In addition, it is equipped with a hardware engine that supports various encryptions such as AES and a DMA controller that is optimal for packet processing, reducing CPU load to 1/2000 compared to existing products, and a hash function (SHA-224/256) and a true random number generator (TRNG) with enhanced random characteristics are also newly installed.

Until now, IoT devices used around the world had to be developed in accordance with each country's wireless laws and standards. The new product is equipped with a multi-band (Sub-1GHz, 2.4GHz) compatible RF chip, enabling global deployment of the same model.

Sample shipments of the product began in December 2020 at 1,000 yen per unit (excluding tax), and mass production is scheduled to begin in March with a monthly production capacity of 100,000 units.

Meanwhile, Lapis provides the ML7436N evaluation board, evaluation tools, support software, and reference software corresponding to the test modes required for radio certification testing.