Renesas Introduces Low Power S5D3 MCUs for Industrial IoT Endpoint Devices

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The S5D3 MCUs integrate a secure cryptographic engine (SCE7), having key protection that secures MCU boot code and communication of IoT endpoint device with a root of trust

Renesas Electronics Corporation, a leading supplier of advanced semiconductor solutions, introduced four new entry-level S5D3 MCUs to its high integration Renesas Synergy S5 microcontroller (MCU) series.

These entry-level S5D3 MCUs are meant for a vast range of industrial, office equipment and building automation, along with smart metering and home appliances that employ a capacitive touch human-machine interface (HMI).

The new S5D3 MCUs introduced by Renesas join the high-end S5D9 MCU and mid-range S5D5 groups with similar S5 Series features including integrated 120 MHz Arm Cortex-M4 core and advanced security. In addition, these have general-purpose features that simplify designing low power and cost sensitive Internet of Things (IoT) endpoint devices.

The S5D3 MCUs are supported by Renesas Synergy Software Package (SSP) with HAL drivers, real-time operating system and application frameworks. In order to develop and customise designs, embedded system designers can either use Renesas Synergy development environments (e² studio) or IAR Embedded Workbench.

Daryl Khoo, Vice President, Product Marketing, IoT Platform Business Division, Renesas Electronics Corporation, said, “The S5D3 MCUs beat the competition with superior security, memory performance, MCU scalability, and Synergy Platform support. The cost-optimised and pin-compatible S5D3 MCUs are scalable up through the S5D5, S5D9 and S7G2 MCU groups if customers later require additional features, more memory, or higher performance.”

Key features

The latest MCUs are based on a 40 nm process and integrate a secure cryptographic engine (SCE7) having key protection that secures the MCU boot code and communication of IoT endpoint device with a root of trust. This capability removes the requirement for external security functions and cut down BOM cost.

Each S5D3 MCU provides higher power consumption of 100 μA/MHz in the active mode, ultra-low power consumption of 1.3 μA in standby mode and 900 μA for a VBATT supply. This keeps the integrated real-time clock running, making these devices suitable for applications that need low power and high performance.

The latest products offer 512 KB flash memory and 256 KB SRAM memory. This unique ratio of 2:1 of embedded flash to SRAM supports intensive communication stacks utilisation for strong IoT connectivity and the 8 KB data flash allows more write/read cycles than the competition.

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