Renesas R5F100JGAFA#V0

Overview

R5F100JGAFA#V0 from Renesas is a 52-pin LQFP-0.65mm ultra-low-power 16-bit RL78/G13 MCU with 256 KB flash, 8 KB data flash, 20 KB RAM, 10-bit ADC (26 channels), RTC, and real-time clock correction - deployed in battery-powered industrial sensors and smart metering interfaces.

For engineers reviewing the R5F100JGAFA#V0 datasheet, R5F100JGAFA#V0 pinout, R5F100JGAFA#V0 application, or R5F100JGAFA#V0 equivalent, key selection criteria include its 1.6–5.5 V operation, 66 μA/MHz active current, HALT/STOP/SNOOZE low-power modes, integrated LIN-capable UART, and 52-pin LQFP package compatibility with space-constrained control modules.

Technical Context

The R5F100JGAFA#V0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 μs (@32 MHz) to 30.5 μs (@32.768 kHz). It integrates a high-accuracy ±1.0% on-chip oscillator (selectable 1–32 MHz), DMA controller (4 channels), and multiplier/divider unit for 16×16→32-bit signed/unsigned operations.

It features dual serial interface sets: up to 4 UART/LIN channels (including LIN-bus support), 3–10 I²C/Simplified I²C channels, and 2–8 CSI (SPI-compatible) channels. The 16-bit timer subsystem includes 12–16 channels plus dedicated 12-bit interval timer and calendar-based RTC with alarm and clock correction functions.

Key Specifications

Pinout & Package

Package: 52-pin LQFP (10 × 10 mm, 0.65-mm pitch), RoHS-compliant, tray packaging (#V0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100JCAFA#V0 and R5F101JGAFA#V0, the R5F100JGAFA#V0 provides optimal balance of embedded data logging capacity (8 KB data flash), computational headroom (256 KB code), and low-power integrity - making it ideal for field-upgradable, battery-backed embedded controllers requiring long-term parameter persistence.

Availability

R5F100JGAFA#V0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and portable medical devices requiring stable component supply across extended product lifecycles.

Supply support for R5F100JGAFA#V0 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 industrial, automotive, and IoT markets.

The RL78/G13 family delivers true low-power performance (66 μA/MHz) with rich analog/mixed-signal integration for cost-sensitive, battery-operated general-purpose embedded applications.

FAQ

What is the maximum operating frequency and corresponding power consumption of the R5F100JGAFA#V0?

The R5F100JGAFA#V0 operates up to 32 MHz using its high-accuracy on-chip oscillator (±1.0% over –40°C to +85°C). At this frequency, it consumes 66 μA per MHz in active mode. In STOP mode with RTC and LVD enabled, it draws just 0.57 μA - a critical specification for battery-backed applications like utility meters and remote sensors where multi-year operation is required. This ultra-low quiescent current is achieved through optimized circuit design and selective peripheral gating.

Does the R5F100JGAFA#V0 support LIN bus communication, and how is it implemented?

Yes, the R5F100JGAFA#V0 supports LIN bus communication via its UART peripherals. Specifically, one or more of its 2–4 UART channels can be configured for LIN 2.2A/SAE J2602 compliance, including break detection, sync field handling, and checksum generation. No external transceiver is required for basic LIN slave functionality, though a LIN physical layer transceiver (e.g., TLE7259) is needed for bus-level signaling. This capability makes the R5F100JGAFA#V0 suitable for automotive body electronics and industrial control networks where LIN reduces wiring complexity and cost.

How does the data flash memory in the R5F100JGAFA#V0 differ from standard code flash, and what are its endurance specs?

The R5F100JGAFA#V0 includes 8 KB of dedicated data flash memory separate from its 256 KB code flash. Unlike code flash, data flash supports background operation (BGO): the CPU can execute instructions from program memory while simultaneously rewriting data flash sectors. It is rated for 1,000,000 write/erase cycles (typical) at VDD = 1.8–5.5 V, significantly exceeding standard code flash endurance. This enables reliable parameter storage, calibration data logging, and firmware update staging without interrupting real-time operation - a key advantage in field-deployed equipment requiring long-term data integrity.

What package type and pin count does the R5F100JGAFA#V0 use, and is it compatible with standard PCB assembly processes?

The R5F100JGAFA#V0 uses a 52-pin LQFP package (10 × 10 mm, 0.65-mm pitch) with lead-free, RoHS-compliant finish. This surface-mount package is fully compatible with standard reflow soldering profiles (J-STD-020) and automated pick-and-place equipment. Its gull-wing leads provide robust mechanical and thermal reliability, and the #V0 suffix confirms tray packaging optimized for high-volume SMT lines. Footprint and thermal pad design guidelines are provided in Renesas Application Note R01AN3717, ensuring manufacturability in consumer, industrial, and medical-grade assemblies.

Can the R5F100JGAFA#V0 operate from a single-cell lithium battery, and what voltage monitoring features does it include?

Yes, the R5F100JGAFA#V0 supports operation from a single-cell lithium battery (nominal 3.7 V, discharged down to ~2.5 V) due to its 1.6–5.5 V supply range. It integrates an on-chip voltage detector (LVD) with 14 programmable threshold levels (1.6–4.5 V in 0.2 V steps), enabling precise brown-out detection and reset generation. The LVD can trigger either a reset or interrupt - allowing firmware to initiate graceful shutdown, save critical state to data flash, or activate backup power before voltage collapse. This ensures robust operation across the full battery discharge curve without external supervisor ICs.