Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteRenesas announced the RZ/Five on March 1, 2022, adding a general-purpose MPU built around Andes Technology’s 64-bit AX45MP RISC-V core alongside its existing Arm-based RZ processors. The company positioned it for IoT endpoints such as solar-inverter gateways and home security systems. Renesas’s product page currently lists RZ/Five as active, with product longevity through 2033; that status does not establish stock or guarantee supply.
What Renesas announced
The RZ/Five is a general-purpose microprocessor unit (MPU) that uses Andes’s 64-bit AX45MP RISC-V CPU core. Renesas framed it as an additional choice in its RZ family, not a replacement for its Arm-based MPUs. In the March 1, 2022 announcement, Senior Vice President Hiroto Nitta described the launch as an expansion of Renesas’s RISC-V offering; statements in the release about market leadership and expected adoption are company views, not independent assessments.
Renesas named solar inverter gateways and home security systems as examples of IoT endpoints for the RZ/Five. Its announcement described a compact package for less complex designs and highlighted support for external DDR memory with error checking and correction (ECC), as well as security functions. These descriptions indicate the product’s intended design space; they do not establish a performance ranking against other processors.
RZ/Five specifications and interfaces
The following figures are specifications in Renesas’s March 1, 2022 announcement. They are not independent benchmark results.
#1 Best Overall
- Flexible MCU Board: Incorporate the ESP32-C3 32-bit RISC-V chip, operating up to 160 MHz, mounted multiple development ports,
- Developer Friendly: Compatible with Arduino IDE, MicroPython, CircuitPython, PlatformIO, ESP IDF, Zephyr, Matter, ESPNow, Meshtastic, WLED, ESPHome, Home Assistant, Ubidots
- Outstanding RF performance: Complete Wi-Fi functions and Bluetooth Low Energy, while supporting communication over 100m with anFL antenna
- Elaborate Power Design: 4 working modes as low as 44 μA in deep sleep mode, while supporting lithium battery charge management
- Thumb-sized Design: 21 x 17.5mm, Seeed Studio XIAO series classic form factor
| Feature | RZ/Five detail |
|---|---|
| CPU | One Andes AX45MP 64-bit RISC-V core; the current Renesas product page also lists a single core |
| Maximum operating frequency | 1 GHz in the 2022 announcement; the current product page lists 1.0 GHz |
| Ethernet | Two Gigabit Ethernet channels in the announcement; the current product page lists 2ch Gigabit Ethernet |
| USB | Two USB 2.0 channels, per the 2022 announcement |
| CAN | Two CAN channels, per the 2022 announcement |
| Analog conversion | Dual A/D converter modules, per the 2022 announcement |
| Memory and security | External DDR with ECC support and security functions, per the 2022 announcement |
Renesas’s current RZ/Five product page labels the product “Active” and lists product longevity through 2033, as observed on October 4, 2026. The longevity field is not a statement of current inventory or a supply contract.
How RZ/Five differs from RZ/G2UL
Renesas described the RZ/Five as compatible with the Arm-based RZ/G2UL in package and peripheral functions. That can make the pair relevant when a design team wants to evaluate RISC-V and Arm-based CPU options within a related hardware context. The announcement does not establish pin-for-pin interchangeability, nor does it provide a complete board-level or price comparison.
Rank #2
- CH32V003 Development Minimum System Board for Nano RISC-V CH32V003F4U6 Chip TYPE-C USB 22Pin
- on-board 24MHz Crystal oscillator
- Power by TYPE-C USB
| Comparison point | RZ/Five | RZ/G2UL |
|---|---|---|
| CPU family | Andes AX45MP, 64-bit RISC-V | Arm-based |
| Package and peripheral relationship | Renesas says package and peripheral functions are compatible with RZ/G2UL | Reference point for the compatibility described in the 2022 announcement |
| Intended design complexity | Renesas describes RZ/Five as compact and aimed at less complex designs | A comparable complexity description is not stated in the announcement |
| Maximum frequency | 1 GHz, per the 2022 announcement | Not stated in the cited announcement |
For evaluation, Renesas described an RZ SMARC Evaluation Board Kit that supports evaluation and switching between RZ/Five and RZ/G2UL CPU modules. The release does not give enough detail to infer that existing boards, firmware, or software will work unchanged across the two options; teams should confirm module, board, and software requirements for their specific design.
Software and system-level support
The March 2022 release described a Verified Linux Package featuring Civil Infrastructure Platform (CIP) Linux with long-term maintenance support for more than 10 years. That duration is attributed to the release and should not be read as a stated end date for a particular software branch.
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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Rank #3
- The ESP32-C3 SUPERMINI is positioned as a high-performance, low-power, cost-effective IoT mini development board, suitable for low-power IoT applications and wireless wearable applications
- It is equipped with a rich set of interfaces, including 11 digital I/Os that can be used as PWM pins and 4 analog I/Os that can be used as ADC pins.
- It supports four serial interfaces, including UART, I2C, and SPI.
- The ESP32-C3 features a 32-bit RISC-V CPU, including an FPU (Floating Point Unit) capable of 32-bit single-precision
- Package: 2PCS ESP32-C3 MINI Development Board ESP32 SuperMini ESP32 C3 WiFi Module
Renesas also outlined a system solution that included a DA9062 power management IC, a 5P35023 programmable clock generator, AT25QL128A flash memory, and an SLG46538 GreenPAK IC for functions such as system reset. These are named system components, not a claim that every RZ/Five design requires the same component set.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Announcement timing versus current status
Renesas said samples were available from the announcement date, March 1, 2022, and scheduled mass production to begin in July 2022. Those are historical statements and do not establish present-day availability. The product page’s active label and 2033 longevity field describe Renesas’s current product-page status as of October 4, 2026; neither confirms distributor stock, pricing, or a guaranteed delivery date.
Quick Recap
Best Value
- Ample PSRAM Storage – The development board offers 8MB PSRAM, providing substantial extra memory for handling more complex tasks, large data buffers, and advanced processing.
- Enhanced Multi-Tasking Capability – With the additional 8MB PSRAM, the ESP32-C5-WIFI6-KIT can efficiently manage multiple protocol stacks simultaneously, ensuring smooth operation in multi-tasking IoT environments.
- Support for Medium-Load Applications – The 8MB PSRAM allows the ESP32-C5 to handle medium-load applications more effectively, making it ideal for scenarios requiring real-time data processing or continuous communication.
- Seamless Performance – The increased memory improves the overall performance and responsiveness of the device, particularly when running applications with larger memory footprints or more demanding computations.
- Future-Proof for Complex Projects – With 8MB of PSRAM, developers are better equipped to build scalable, high-performance solutions that support both current and future IoT use cases, offering flexibility for future-proofing designs.
Rank #4
- ESP32-C6 WiFi 6 microcontroller development board adopts ESP32-C6-WROOM-1-N8 module, which is equipped with RISC-V 32-bit single-core processor, up to 160MHz main frequency, built-in 8MB Flash
- Integrates WiFi 6, Bluetooth 5 and and IEEE 802.15.4 (Zigbee 3.0 and Thread) wireless communication, with superior RF performance
- Integrates rich peripherals including SPI, UART, I2C, I2S, LED PWM, SDIO and other interfaces, compatible with the pinout of ESP32-C6-DevKitC-1-N8 development board, more convenient to use and expand a variety of peripheral modules
- Onboard CH343 and CH334 USB HUB chips, supports USB and UART development at the same time via a USB-C port
- Comes with online examples and tutorials for ESP-IDF development environment
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
