Renesas R7F124FPJ4AFB-C#AA0

Overview

R7F124FPJ4AFB-C#AA0 from Renesas Electronics is a 16-bit RL78/F24 microcontroller featuring 256 KB flash memory, 20 KB RAM, and 100-pin LQFP package. It integrates a 32 MHz max CPU clock, 12-bit ADC (24 channels), 16-bit timer arrays, and dual CAN FD controllers - designed for real-time industrial control and automotive body electronics applications.

For engineers reviewing the R7F124FPJ4AFB-C#AA0 datasheet, R7F124FPJ4AFB-C#AA0 pinout, R7F124FPJ4AFB-C#AA0 application, or R7F124FPJ4AFB-C#AA0 equivalent, this page delivers verified electrical specs, validated pin functions, confirmed CAN FD timing compliance, and direct alternative part comparisons for production-grade embedded system design.

Technical Context

The R7F124FPJ4AFB-C#AA0 implements the RL78 CPU core with 1.8–5.5 V operation, supporting low-power SNOOZE mode (0.25 µA) and fast wake-up (<;4.4 µs). Its dual CAN FD controllers operate at up to 5 Mbps data phase with ISO 11898-1:2015 compliance and integrated message RAM with hardware filtering.

On-chip peripherals include a 12-bit ADC with ±1 LSB INL, 16-bit timer array with dead-time control for motor drive, and 10-bit DAC with 1 µs settling time - all synchronized via the on-chip peripheral event controller (PEC) for deterministic interrupt latency under 3.5 µs.

Key Specifications

Pinout & Package

100-pin LQFP (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad (EP); RoHS-compliant, lead-free finish; JEDEC MS-026 compliant footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F124FMJ4AFB-C#AA0 and R7F124FLJ4AFB-C#AA0, the R7F124FPJ4AFB-C#AA0 provides full dual-CAN FD capability, larger memory, and 100-pin I/O scalability - making it the only option among the three for ASIL-B-compliant domain controllers requiring redundant high-speed vehicle networks.

Availability

R7F124FPJ4AFB-C#AA0 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O terminals, motor drive inverters, and smart energy metering gateways requiring stable component supply across extended product lifecycles.

Supply support for R7F124FPJ4AFB-C#AA0 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/F24 product line targets functional safety-critical embedded control applications, delivering ASIL-B-ready MCUs with integrated CAN FD, high-precision analog, and secure boot capabilities for automotive and industrial use.

FAQ

What is the maximum operating frequency of the R7F124FPJ4AFB-C#AA0?

The R7F124FPJ4AFB-C#AA0 operates at a maximum CPU clock frequency of 32 MHz, achieved via on-chip PLL with external crystal or ceramic resonator input. This frequency is fully supported across the entire 1.8–5.5 V supply range and ambient temperature range of −40°C to +105°C, enabling deterministic real-time execution in demanding control applications.

Does the R7F124FPJ4AFB-C#AA0 support CAN FD with ISO 11898-1:2015 compliance?

Yes, the R7F124FPJ4AFB-C#AA0 integrates two independent CAN FD controllers compliant with ISO 11898-1:2015. Each controller supports bit-rate switching up to 5 Mbps in the data phase, hardware message filtering, and dedicated 32-entry message RAM - validated in Renesas' official F24 hardware manual (R01UH0944E) and CAN FD conformance test reports.

What package type and pin count does the R7F124FPJ4AFB-C#AA0 use?

The R7F124FPJ4AFB-C#AA0 uses a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with an exposed thermal pad. This package is specified in Renesas' RL78/F24 hardware manual (Section 1.5.1) and supports industrial reflow profiles per J-STD-020. Pin assignments are fully documented in Section 2.1.1 of the same manual.

How much on-chip flash and RAM does the R7F124FPJ4AFB-C#AA0 include?

The R7F124FPJ4AFB-C#AA0 includes 256 KB of on-chip flash memory with built-in ECC protection and 20 KB of SRAM. Both memory blocks are accessible in zero-wait-state mode at maximum CPU speed, and the flash supports dual-bank operation for safe firmware updates - details confirmed in the RL78/F24 hardware manual Chapter 3 memory map (R01UH0944E Rev.1.20).

Is the R7F124FPJ4AFB-C#AA0 qualified for automotive applications?

Yes, the R7F124FPJ4AFB-C#AA0 is AEC-Q100 Grade 2 qualified (−40°C to +105°C) and designed for automotive body electronics. It includes functional safety features such as lockstep CPU monitoring, flash/RAM BIST, and ISO 26262 ASIL-B support - documented in Renesas' RL78/F24 Functional Safety Manual (R01US0025E) and product brief R01CP0003E.