Renesas Synergy S5D3 MCU Group

Renesas Electronics has extended its high-integration Renesas Synergy S5 microcontroller (MCU) series with the introduction of the entry-level S5D3 MCU Group.

The MCUs include integrated 120 MHz Arm Cortex-M4 core and advanced security, as well as general-purpose features that simplify designing low-power Internet of Things (IoT) endpoint devices. They target a broad range of industrial, building automation and office equipment, as well as smart metering and home appliances employing a capacitive touch human-machine interface (HMI).

Based on a 40 nm process, the MCUs integrate a secure cryptographic engine (SCE7) with key protection that safeguards the MCU boot code and IoT endpoint device communication with a root of trust. This capability eliminates the need for external security functions.

Each MCU offers power consumption of 100 μA/MHz in active mode, 1.3 μA in standby mode and 900 nA for a VBATT supply that keeps the integrated real-time clock running. This makes the devices suitable for applications that require low power and high performance.

The MCUs offer 512 KB flash memory and a large 256 KB SRAM memory. This 2:1 ratio of embedded flash to SRAM supports intensive communication stacks utilisation for robust IoT connectivity, and the 8 KB data flash is said to enable more read/write cycles than in other devices. The Renesas Synergy Software Package (SSP) supports the MCUs with HAL drivers, application frameworks and a real-time operating system.

Each MCU integrates several analog components including two 12-bit analog-to-digital converters (ADCs), a 2-channel 12-bit digital-to-analog converter (DAC), high-speed 6-channel comparator, temperature sensor and a 6-channel programmable gain amplifier (PGA). The MCUs also offer a scalable set of 13 independent 32-bit general-purpose timers, and communications interfaces such as USB, CAN, I²C, SPI, SDHI and SSI.