Renesas R5F5631EDDBG#U0

Overview

R5F5631EDDBG#U0 from Renesas is a 100 MHz 32-bit RX CPU-based microcontroller in the RX631 Group, featuring 2 MB on-chip flash memory, 128 KB SRAM, 32 KB data flash, IEEE-754 single-precision FPU, and integrated 10-/12-bit A/D converters - designed for industrial control and networked embedded systems requiring deterministic real-time performance and secure firmware execution.

For engineers reviewing the R5F5631EDDBG#U0 datasheet, R5F5631EDDBG#U0 pinout, R5F5631EDDBG#U0 application, or R5F5631EDDBG#U0 equivalent, this MCU delivers verified Ethernet MAC omission (vs. RX63N), 134 I/O pins with 5-V tolerance, four low-power modes, IEC60730 safety support, and full-speed USB 2.0 host/function capability - critical for selecting a cost-optimized, non-Ethernet MCU in space-constrained LFBGA packages.

Technical Context

The R5F5631EDDBG#U0 implements the CISC Harvard-architecture RX CPU core with 5-stage pipeline, variable-length instructions, and MPU support - enabling ultra-compact code density and memory protection for certified safety applications. It executes at 165 DMIPS @ 100 MHz and integrates dual multiply-and-accumulate units plus a 32-bit multiplier completing one-cycle operations.

Its peripheral set excludes Ethernet MAC and EDMAC (distinguishing it from RX63N), but retains full USB 2.0 host/function/OTG, three CAN channels (ISO11898-1), up to 13 SCI interfaces, four I²C buses (one FM+), and hardware AES encryption via DEU - all synchronized to independent clock domains (ICLK/PCLK/FCLK/BCLK) for precise timing control across subsystems.

Key Specifications

Pinout & Package

Package: 176-pin LFBGA (PLBG0176GA-A), 13 × 13 mm body, 0.8-mm ball pitch, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F563NEDDBG#U0, the R5F5631EDDBG#U0 removes Ethernet functionality to reduce gate count and dynamic power, while retaining identical USB, CAN, ADC, and safety features - making it optimal for cost-sensitive industrial nodes without LAN requirements. Against RX66T, it trades raw speed for certified safety and security primitives essential in metering and medical edge devices.

Availability

R5F5631EDDBG#U0 is available at Aetrix Electronics and suitable for industrial automation, smart metering, and medical sensor hub designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized Renesas distribution channels.

Supply support for R5F5631EDDBG#U0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets - with deep expertise in real-time embedded processing and functional safety.

The RX631 Group is engineered for cost-effective, high-integrity industrial control applications - emphasizing deterministic timing, integrated safety features (IEC60730), and rich analog/mixed-signal integration without Ethernet overhead.

FAQ

What is the maximum operating frequency and DMIPS rating of the R5F5631EDDBG#U0?

The R5F5631EDDBG#U0 operates at a maximum frequency of 100 MHz and delivers 165 DMIPS of processing performance. This metric is measured under standard conditions using the EEMBC CoreMark benchmark and reflects the real-world throughput achievable by the RX CPU core with its 5-stage pipeline and dual MAC units - directly enabling complex control loops and protocol stacks within tight timing budgets in the R5F5631EDDBG#U0.

Does the R5F5631EDDBG#U0 include an Ethernet MAC controller?

No, the R5F5631EDDBG#U0 belongs to the RX631 Group and explicitly omits the Ethernet MAC and associated EDMAC peripheral - unlike the RX63N Group. This distinction is confirmed in Renesas documentation (R01DS0098EJ0180), where Table 1.2 shows "Not available" for Ethernet controller in all RX631 packages. The R5F5631EDDBG#U0 retains full USB 2.0, CAN, and SCI interfaces instead.

What package type and pin count does the R5F5631EDDBG#U0 use?

The R5F5631EDDBG#U0 uses a 176-pin LFBGA package designated PLBG0176GA-A, measuring 13 × 13 mm with 0.8-mm ball pitch. This package supports 134 general-purpose I/O pins (including 18 with 5-V tolerance), and is mechanically and thermally qualified for industrial reflow profiles - matching the footprint of higher-flash RX63N variants for design reuse where Ethernet is unnecessary.

How much on-chip memory does the R5F5631EDDBG#U0 integrate?

The R5F5631EDDBG#U0 integrates 2 MB of on-chip flash memory (executed at 100 MHz with zero wait states), 128 KB of SRAM (also zero-wait), and 32 KB of reprogrammable data flash rated for 100,000 erase/write cycles. These memory resources are mapped into a 4-Gbyte linear address space and support background programming - allowing seamless firmware updates and persistent parameter storage without halting the R5F5631EDDBG#U0 application.

Which safety and security features are implemented in the R5F5631EDDBG#U0?

The R5F5631EDDBG#U0 includes hardware support for IEC60730 Class B compliance (oscillation-stop detection, CRC calculator, IWDT, A/D self-test) and a dedicated Data Encryption Unit (DEU) supporting AES-128/192/256 in ECB/CBC modes. These features are silicon-verified and documented in the R01DS0098EJ0180 datasheet - enabling secure boot, encrypted data logging, and functional safety certification without external components in the R5F5631EDDBG#U0.