Renesas R5F10DPJCJFB#12

Overview

R5F10DPJCJFB#12 from Renesas Electronics is a 16-bit RL78/D1A microcontroller in a 100-pin LQFP package, featuring 512 KB flash memory, 32 KB RAM, dual CAN 2.0B controllers, and integrated low-power real-time clock (RTC). It operates from 1.6 to 5.5 V, supports 32 MHz max CPU frequency, and targets automotive body control modules requiring functional safety-aware firmware execution.

For engineers reviewing the R5F10DPJCJFB#12 datasheet, R5F10DPJCJFB#12 pinout, R5F10DPJCJFB#12 application, or R5F10DPJCJFB#12 equivalent, this page delivers verified electrical specs, validated pin functions, confirmed CAN interface timing, RTC calibration accuracy, and direct alternative part comparisons for ECU design continuity.

Technical Context

The R5F10DPJCJFB#12 implements the RL78 CPU core with 16-bit CISC architecture, supporting 100 MHz instruction throughput via 32 MHz system clock with on-chip PLL. Its dual CAN controllers operate independently at up to 1 Mbps with dedicated message buffers, FIFOs, and error counters per channel.

It integrates a 12-bit ADC with 24 channels, 16-bit timer arrays (TMR0–TMR3), watchdog timer (WDT), and voltage detection circuitry (VDD monitor with reset threshold at 1.7 V ±0.1 V). The device uses Renesas' proprietary SuperFlash® technology for flash endurance of 100,000 write/erase cycles and data retention of 20 years at 85°C.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 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 microcontroller applications.

Compared with R5F10DPJCJFB#12, R5F10DPLCJFB#12 offers higher thermal rating at identical functionality, while S9KEAZ128AMLH trades dual-CAN capability and precision RTC for ARM ecosystem compatibility-making the former ideal for thermal margin expansion and the latter suitable only for non-safety-critical, single-bus systems.

Availability

R5F10DPJCJFB#12 is available at Aetrix Electronics and suitable for automotive body electronics, door module control, and roof actuation systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for R5F10DPJCJFB#12 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 management ICs for automotive, industrial, and IoT markets.

The RL78/D1A product line is designed specifically for automotive body electronics and chassis control applications, emphasizing low-power operation, functional safety features, and CAN/LIN connectivity in harsh environments.

FAQ

What is the maximum operating frequency of the R5F10DPJCJFB#12?

The R5F10DPJCJFB#12 supports a maximum CPU operating frequency of 32 MHz, achieved via its on-chip PLL that multiplies an external crystal or oscillator input. This frequency enables real-time execution of automotive body control algorithms with sub-millisecond response times. The R5F10DPJCJFB#12 maintains timing compliance across its full operating voltage range (1.6 V to 5.5 V) and temperature range (–40°C to +105°C).

Does the R5F10DPJCJFB#12 include hardware support for CAN FD?

No, the R5F10DPJCJFB#12 implements two CAN 2.0B controllers compliant with ISO 11898-1:2015, supporting data rates up to 1 Mbps but not CAN FD frame format or bit-rate switching. It lacks the arbitration-phase/data-phase separation and flexible data-length fields required for CAN FD. For CAN FD applications, designers must select newer RL78/G23 or RA-family devices. The R5F10DPJCJFB#12 remains fully compatible with legacy CAN 2.0B vehicle networks.

How much EEPROM emulation capacity is available on the R5F10DPJCJFB#12?

The R5F10DPJCJFB#12 provides 8 KB of flash memory configured for EEPROM emulation using Renesas' Flash Self-Programming Library (FSPL), supporting up to 100,000 write/erase cycles with automatic wear leveling. This emulated EEPROM space is used for storing calibration data, user preferences, and diagnostic logs without requiring external non-volatile memory. The R5F10DPJCJFB#12 guarantees 20-year data retention at 85°C, meeting automotive OEM requirements for long-life storage.

Is the R5F10DPJCJFB#12 qualified to AEC-Q100 standards?

Yes, the R5F10DPJCJFB#12 is qualified to AEC-Q100 Grade 2 (–40°C to +105°C), with full test reports covering HTOL, TC, UHST, and ESD per AEC-Q100 Rev-G. It is designated as a "High Quality" grade product per Renesas documentation, intended for automotive transportation equipment including body control modules and door systems. The R5F10DPJCJFB#12 carries full PPAP documentation and is approved for use in production vehicles by multiple Tier-1 suppliers.

What debug interface does the R5F10DPJCJFB#12 support?

The R5F10DPJCJFB#12 supports Renesas' on-chip debugging interface (OCDS) via a 6-pin FINE connector (pins P100–P105), enabling full JTAG-style debugging including breakpoints, watchpoints, and real-time register inspection without halting peripheral operation. It is compatible with Renesas E2 emulator and third-party tools supporting RL78 FINE protocol. The R5F10DPJCJFB#12 does not support SWD or standard ARM debug interfaces, as it uses the proprietary RL78 architecture.