Renesas R5F10DMJCLFB#56

Overview

R5F10DMJCLFB#56 from Renesas Electronics is an 80-pin RL78/D1A 16-bit microcontroller with integrated CAN 2.0B controller, 512 KB flash memory, 32 KB RAM, and operating voltage range of 1.8–5.5 V. It features a 32 MHz max CPU clock, 12-bit ADC (24 channels), 16-bit timer arrays, and low-power SNOOZE mode for industrial control and automotive body electronics applications.

For engineers reviewing the R5F10DMJCLFB#56 datasheet, R5F10DMJCLFB#56 pinout, R5F10DMJCLFB#56 application, or R5F10DMJCLFB#56 equivalent, key selection criteria include CAN channel count, flash endurance (100k write/erase cycles), on-chip debug interface (FINE), and compliance with AEC-Q100 Grade 2 for extended temperature operation (−40°C to +105°C).

Technical Context

The R5F10DMJCLFB#56 implements the RL78 CPU core with 16-bit CISC architecture, supporting 100+ instructions and 3-stage pipeline execution. It integrates dual CAN controllers (CAN0/CAN1) with message buffers, FIFO support, and automatic retransmission-enabling concurrent communication on two independent bus segments.

On-chip peripherals include a 12-bit successive-approximation ADC with sample-and-hold, programmable gain amplifier (PGA), and window comparator; plus 16-bit multi-function timers (TM00–TM03) with dead-time insertion for motor control, and a real-time clock (RTC) with calendar function and battery-backed operation.

Key Specifications

Pinout & Package

Package: LQFP-80 (12 mm × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F10DMECLFB#56, the R5F10DMJCLFB#56 provides 128 KB more flash and 8 KB more RAM for complex firmware and data logging; versus SPC560B50L5, it offers superior analog integration and sub-μA sleep modes at the expense of raw CPU performance and 32-bit addressing.

Availability

R5F10DMJCLFB#56 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, smart energy metering, and commercial HVAC systems requiring stable component supply and long-term lifecycle support.

Supply support for R5F10DMJCLFB#56 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 Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/D1A product line targets cost-sensitive, high-reliability embedded applications requiring CAN connectivity, low-power operation, and robust analog integration-especially in automotive body electronics and industrial automation.

FAQ

What is the maximum operating frequency of the R5F10DMJCLFB#56?

The R5F10DMJCLFB#56 supports a maximum CPU clock frequency of 32 MHz using its on-chip high-speed oscillator or external crystal/resonator. This frequency is achievable across the full operating voltage range (1.8–5.5 V) and temperature range (−40°C to +105°C), and is used to derive all peripheral clocks including CAN bit timing and ADC sampling rates. The R5F10DMJCLFB#56 maintains consistent timing margins even under worst-case voltage and temperature conditions.

Does the R5F10DMJCLFB#56 support CAN FD?

No, the R5F10DMJCLFB#56 implements CAN 2.0B only, supporting standard (11-bit) and extended (29-bit) identifier formats with bit rates up to 1 Mbps. It does not support CAN FD features such as flexible data-rate, longer payloads, or CRC enhancements. For CAN FD applications, Renesas offers the RH850/F1K or RA6T2 families-but those require PCB and firmware redesign due to different pinouts, memory maps, and toolchain requirements compared to the R5F10DMJCLFB#56.

What debug interface does the R5F10DMJCLFB#56 use?

The R5F10DMJCLFB#56 uses Renesas' FINE (Fast In-Circuit Emulator) single-wire debug interface, compatible with E2 studio and CS+ IDEs. It supports full-speed real-time trace, hardware breakpoints, memory inspection, and flash programming without halting CPU execution. Unlike JTAG, FINE requires only one dedicated pin (typically P00 or P10 depending on configuration), reducing PCB routing complexity while maintaining full debug functionality for the R5F10DMJCLFB#56.

Is the R5F10DMJCLFB#56 qualified for automotive applications?

Yes, the R5F10DMJCLFB#56 is qualified per AEC-Q100 Grade 2 (−40°C to +105°C), making it suitable for automotive body electronics, chassis, and infotainment subsystems. Its qualification includes stress testing for temperature cycling, humidity bias, ESD, and latch-up. However, it is not designated for safety-critical applications like airbag control or braking systems-those require ASIL-B/C-certified devices outside the RL78/D1A family. The R5F10DMJCLFB#56 meets automotive reliability requirements without needing additional qualification effort.

How much EEPROM-equivalent functionality does the R5F10DMJCLFB#56 provide?

The R5F10DMJCLFB#56 does not include true EEPROM, but its 512 KB on-chip flash memory supports data retention for ≥100 years and write/erase endurance of ≥100,000 cycles. Using Renesas' Flash Self-Programming (FSP) library, users can emulate EEPROM functionality in designated flash blocks with wear-leveling and error correction. This emulated EEPROM is accessible via standard API calls in the R5F10DMJCLFB#56's firmware development kit and requires no external components.