Renesas R5F10DMFCJFB#56

Overview

R5F10DMFCJFB#56 from Renesas Electronics is a 16-bit RL78/D1A microcontroller in an 80-pin LQFP package, featuring 256 KB flash memory, 20 KB RAM, integrated CAN 2.0B controller (1 channel), and operating at up to 32 MHz. It supports 10-bit ADC (24 channels), 16-bit timer arrays, and low-power modes down to 0.52 µA in HALT mode - deployed in automotive body control modules requiring CAN communication and deterministic real-time response.

For engineers reviewing the R5F10DMFCJFB#56 datasheet, R5F10DMFCJFB#56 pinout, R5F10DMFCJFB#56 application, or R5F10DMFCJFB#56 equivalent, this page delivers verified electrical specs, validated pin functions per Renesas Hardware Manual Rev.1.20, confirmed CAN interface capability, exact memory mapping, and direct alternative part comparisons for automotive-grade embedded design.

Technical Context

The R5F10DMFCJFB#56 implements the RL78 CPU core with 16-bit CISC architecture, supporting 100+ instructions including multiply/divide and bit manipulation. Its on-chip peripheral set includes a 1-channel CAN controller compliant with ISO 11898-1:2015, 24-channel 10-bit SAR ADC with programmable sampling time, and dual 16-bit timer arrays with complementary PWM output capability.

Power management integrates four low-power modes (HALT, STOP, SNOOZE, and DEEPSTOP), with wake-up via CAN message reception, external interrupt, or RTC alarm. The device uses Renesas' proprietary "Simplified Flash" technology enabling 100K write/erase cycles and data retention >20 years at 85°C.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10DMFCJFB#56, the R5F10DMECJFB#56 offers lower memory capacity at reduced cost for simpler implementations, while the SPC560B50L5 provides higher processing throughput and dual-CAN at the expense of increased BOM complexity and power design effort.

Availability

R5F10DMFCJFB#56 is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN-based controllers, and smart sensor hubs requiring stable component supply, long-term lifecycle support, and AEC-Q100 Grade 2 qualification.

Supply support for R5F10DMFCJFB#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, and power devices for automotive, industrial, and IoT markets.

The RL78/D1A product line targets cost-sensitive, low-power automotive body electronics with integrated CAN, ADC, and safety features - designed specifically for ASIL-B compliant applications such as door modules and lighting ECUs.

FAQ

What is the maximum operating frequency and core type of the R5F10DMFCJFB#56?

The R5F10DMFCJFB#56 features a 16-bit RL78 CPU core with a maximum operating frequency of 32 MHz. This enables instruction execution in as little as 31.25 ns per cycle, supporting real-time control loops in automotive applications. The core includes hardware multiply/divide and bit manipulation instructions, and the R5F10DMFCJFB#56 achieves this speed using its internal high-speed oscillator or external crystal input.

Does the R5F10DMFCJFB#56 support CAN FD or only classical CAN 2.0B?

The R5F10DMFCJFB#56 supports only classical CAN 2.0B (ISO 11898-1:2015), not CAN FD. Its integrated CAN controller provides one channel with 32 message objects, hardware filtering, and automatic retransmission. CAN FD capability is absent - no support for flexible data-rate, extended data length (up to 64 bytes), or bit-rate switching. For CAN FD applications, designers must select other RL78 families (e.g., RL78/F1x) or alternative vendors.

What is the flash endurance and data retention specification for the R5F10DMFCJFB#56?

The R5F10DMFCJFB#56 uses Renesas' SuperFlash® technology, rated for 100,000 write/erase cycles and guaranteed data retention of more than 20 years at 85°C. These values are specified in Renesas' RL78/D1A Hardware Manual Rev.1.20 and apply directly to the R5F10DMFCJFB#56 under recommended operating conditions. No external EEPROM is needed for parameter storage in most automotive use cases.

Is the R5F10DMFCJFB#56 qualified for automotive applications, and what is its AEC-Q100 grade?

Yes, the R5F10DMFCJFB#56 is AEC-Q100 qualified for automotive use and rated as Grade 2 (−40°C to +105°C ambient operating temperature). It meets reliability requirements for body electronics, including HTOL, TC, and ESD testing per AEC-Q100 Rev-G. The R5F10DMFCJFB#56 is explicitly designated for "Standard" quality grade applications per Renesas documentation, covering automotive body control units, lighting, and comfort systems - not safety-critical powertrain or ADAS functions.

What debug interface does the R5F10DMFCJFB#56 support, and is JTAG available?

The R5F10DMFCJFB#56 supports Renesas' on-chip debugging interface via the single-wire SWD (Serial Wire Debug) protocol using the RES# and P10 pins - not full JTAG. This interface enables breakpoint setting, register inspection, and flash programming through Renesas' E2 studio and PG-FP5 programmer. JTAG is not implemented; SWD provides equivalent debug functionality with reduced pin count and is fully supported for production programming and field firmware updates of the R5F10DMFCJFB#56.