Renesas RZ/G3S is a 64-bit Arm Cortex-A55/M33 microprocessor with low power consumption and enhanced peripherals

Renesas RZ/G3S 64-bit Arm Cortex-A55 microprocessor (MPU) designed for IoT edge and gateway devices consumes as little as 10µW in standby mode thanks to its Cortex-M33 core(s) and features a PCIe interface for high-speed data transfers with 5G wireless modules.

A single-core ARM Cortex-A55 CPU powers the RZ/G3s and can distribute workloads to two sub-CPUs, boosting efficiency in task handling and resulting in fewer components and a smaller system size. The Cortex-A55 core operates at 1.1GHz and is designed to improve power efficiency and performance over its predecessor, the Cortex-A53.

The RZ/G3S isn’t Renasas’ first Cortex-A55 product as they have previously released the RZ/A3UL and the RZ/G2L, both powered by the same Cortex-A55 CPU. Additionally, Renesas launched the 64-bit RISC-V RZ/Five processor late last year. The RZ/G3S boasts high-speed interfaces such as PCIe and GbE, a better standby mode, and improved security features which make it suitable for IoT applications such as tracking devices, home gateways, and smart meters.

Renesas RZ/G3S specifications:

• CPU – 1x ARM Cortex-A55 up to 1.1GHz
• Sub-Processor – ARM Cortex-M33 (dual or single) @ 250MHz
• Memory:
  • Internal: 1MB RAM (ECC)
  • External – 16-bit DDR4-1600 or LPDDR4-1600 (ECC)
• SD card/MMC interface –  3 channels, SD 3.0, eMMC 4.51
• Networking – 2x Gigabit Ethernet
• USB – 1x USB 2.0 Host/Function (OTG), 1x USB 2.0 Host
• PCIe – 1x 1-lane PCIe Gen 2 (optional)
• Analog – 8x 12-bit ADC
• Power Management – Sleep, Software/Module Standby
• Timers:
  • 1x RTC
  • 8x 32-bit GTM (General Timer)
  • 1x 32-bit MTU3 (Multipurpose Timer) and 8x 16-bit MTU3
  • 8x 32-bit PWM
• Package:
  • PBGA, 13-mm square, 0.5mm pitch (w/o PCIe)
  • PBGA, 14-mm square, 0.5mm pitch (w/ PCIe)

The RZ/G3S microprocessor is supported by Renesas’ RZ/G Verified Linux Package, featuring Civil Infrastructure Platform (CIP) Linux and offering over 10 years of maintenance support. The user manual lists more of the RZ/G3S microprocessor’s specifications and can be downloaded from the product page, along with other supporting documentation and software applications. The company has also developed a “Single Board Computer Gateway” based on a combination of the RZ/G3S MPU with power management ICs and clock products.

The evaluation board kit contains a module board (SOM), a carrier board, a JTAG cable, a USB Type-A to Micro-B cable, plus screws and spacers. The user is required to procure a 65W Type-C charger, a USB C-to-C cable, and a microSD card.

On the product page, you can request a quote on a variant of the RZ/G3S microprocessor that suits your requirements and purchase the evaluation board kit described above.

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