Renesas R5F104JJGFA#30

Overview

R5F104JJGFA#30 from Renesas is a 52-pin LQFP-0.65mm-pitch 16-bit RL78/G14 microcontroller with 256 KB flash, 8 KB data flash, 20 KB RAM, and industrial-grade -40°C to +105°C operation (G-grade). It integrates 12-bit ADC (16 channels), dual 8-bit DACs, RTC with calendar, 12-channel 16-bit TAU timer, UART/LIN, I²C, CSI, and ultra-low-power modes (0.60 μA in STOP with RTC+LVD).

For engineers reviewing the R5F104JJGFA#30 datasheet, R5F104JJGFA#30 pinout, R5F104JJGFA#30 application, or R5F104JJGFA#30 equivalent, key selection criteria include its G-grade temperature rating, 52-pin LQFP package with 0.65 mm pitch, integrated LIN-capable UARTs for automotive body electronics, and hardware event linking (ELC) for deterministic peripheral coordination without CPU intervention.

Technical Context

The R5F104JJGFA#30 implements the RL78 CPU core with 3-stage pipeline, supporting instruction execution times from 0.03125 µs (32 MHz) to 30.5 µs (32.768 kHz), and includes multiply/divide/accumulate instructions. Its memory subsystem comprises 256 KB on-chip flash (1 KB block size), 8 KB data flash with background operation (BGO), and 20 KB SRAM - all accessible within a 1 MB address space.

Peripherals are orchestrated via Event Link Controller (ELC), enabling direct signal routing between 19–26 event sources and target functions (e.g., ADC trigger → DMA transfer), while the Data Transfer Controller (DTC) supports normal, repeat, and block transfer modes activated by interrupts, including chain transfer for multi-step data movement without CPU load.

Key Specifications

Pinout & Package

Package: 52-pin plastic LQFP (10 × 10 mm, 0.65 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 R5F104JJGFA#30, the R5F104JHGFA#30 offers lower memory capacity at reduced cost for stable, mature designs, while the R5F104JLGFA#30 provides scalable headroom for evolving feature sets - all share identical pinout, timing, and peripheral register maps for seamless migration.

Availability

R5F104JJGFA#30 is available at Aetrix Electronics and suitable for smart energy metering, automotive body electronics, industrial sensor hubs, and home appliance control requiring stable component supply across extended product lifecycles.

Supply support for R5F104JJGFA#30 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.

The RL78/G14 family delivers true low-power performance (66 μA/MHz active, 0.60 μA STOP) for cost-sensitive, battery-operated, and thermally constrained general-purpose embedded systems.

FAQ

What is the maximum operating frequency and corresponding power consumption of the R5F104JJGFA#30?

The R5F104JJGFA#30 operates up to 32 MHz with a typical active current of 66 μA/MHz at VDD = 3.0 V and TA = 25°C. At full speed, this equates to ~2.1 mA total supply current. Its ultra-low-power architecture maintains functionality down to 1.6 V, enabling operation directly from single-cell Li-ion or alkaline batteries without regulators.

Does the R5F104JJGFA#30 support LIN bus communication, and which UART channels implement it?

Yes, the R5F104JJGFA#30 supports LIN 2.2 protocol via UART2 (P14/RxD2 and P13/TxD2) and UART3 (P15/SCK20 and P16/TO01), both featuring hardware sync-break detection, checksum generation/verification, and automatic header identification - eliminating software overhead for LIN slave node implementation.

What is the purpose of the REGC pin on the R5F104JJGFA#30, and what capacitor value is required?

The REGC pin on the R5F104JJGFA#30 connects to the internal voltage regulator's stabilization capacitor. A 0.47 µF to 1.0 µF ceramic capacitor must be placed between REGC and VSS, located as close as possible to the pin. Failure to install this capacitor causes unstable operation or failure to exit reset due to regulator oscillation.

How many analog input channels does the R5F104JJGFA#30 ADC support, and what reference options are available?

The R5F104JJGFA#30 features a 12-bit successive-approximation ADC with 16 analog input channels (ANI0–ANI15). Reference voltage options include external AVREFP/AVREFM pins, internal 1.45 V bandgap reference, or VDD itself - selectable per channel via ADSCR register, enabling mixed-signal measurement across varying sensor output ranges.

Is the R5F104JJGFA#30 pin-compatible with other RL78/G14 variants in the same 52-pin LQFP package?

Yes, all RL78/G14 devices in the 52-pin LQFP-0.65mm package (e.g., R5F104JCAFA#30 through R5F104JJGFA#30 and R5F104JLGFA#30) share identical pinouts, electrical characteristics, and peripheral mappings. Firmware and PCB designs are interchangeable across flash/RAM variants - only memory configuration and grade differ.