Renesas R5F100JFGFA#X0

Overview

R5F100JFGFA#X0 from Renesas is a 52-pin LQFP-0.65mm MCU in the RL78/G13 family, featuring a 16-bit RL78 CPU core, 256 KB flash memory, 8 KB data flash, 20 KB RAM, and operation from 1.6 V to 5.5 V. It delivers 41 DMIPS at 32 MHz, supports ultra-low-power modes (66 μA/MHz active, 0.57 μA RTC+LVD), and integrates 12-bit ADC (26 channels), RTC, UART/LIN, I²C, and SPI interfaces for embedded control in industrial sensors and smart meters.

For engineers reviewing the R5F100JFGFA#X0 datasheet, R5F100JFGFA#X0 pinout, R5F100JFGFA#X0 application, or R5F100JFGFA#X0 equivalent, key selection criteria include its 52-pin LQFP package with 26-channel ADC support, industrial-grade temperature range (−40°C to +105°C), integrated LIN-capable UART, and on-chip debug functionality for rapid firmware development and field calibration.

Technical Context

The R5F100JFGFA#X0 implements the RL78 CISC core with 3-stage pipeline and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz), enabling dynamic performance/power trade-offs. Its memory subsystem includes 256 KB code flash (1 KB block size, security-protected erase), 8 KB background-operable data flash (1M rewrite cycles), and 20 KB SRAM - with dedicated flash library RAM allocation at FAF00H.

Peripherals are tightly coupled to low-power operation: the 12-bit interval timer and RTC operate independently in STOP mode; the 12-bit ADC supports internal 1.45 V reference and temperature sensing; and dual UART channels include LIN bus physical layer compliance with automatic sync-break detection and checksum generation.

Key Specifications

Pinout & Package

Package: 52-pin LQFP, 10 mm × 10 mm, 0.65 mm pitch, exposed pad (PLQP0052JA-A).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100JGAFP#V0, the R5F100JFGFA#X0 offers extended temperature operation and higher I/O count in a more compact 0.65 mm pitch LQFP; versus R5F101JGAFP#V0, it provides essential data flash for secure, wear-levelled nonvolatile storage without external components.

Availability

R5F100JFGFA#X0 is available at Aetrix Electronics and suitable for smart energy metering, industrial sensor nodes, and home appliance control requiring stable component supply across long-lifecycle production programs.

Supply support for R5F100JFGFA#X0 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, and power solutions for automotive, industrial, and IoT markets.

The RL78/G13 product line delivers true low-power embedded control with integrated peripherals and robust flash security, targeting cost-sensitive industrial and consumer applications demanding long battery life and field firmware updates.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F100JFGFA#X0?

The R5F100JFGFA#X0 operates at up to 32 MHz using its high-speed on-chip oscillator and achieves 41 DMIPS performance. This metric is measured under standard conditions (VDD = 3.3 V, TA = 25°C) per the RL78/G13 datasheet Rev.3.80. The core's 3-stage pipeline and optimized instruction set enable consistent throughput across voltage and temperature ranges supported by the device.

Does the R5F100JFGFA#X0 support LIN bus communication, and how is it implemented?

Yes, the R5F100JFGFA#X0 supports LIN 2.2 and SAE J2602 protocols via its UART0 peripheral. Implementation includes hardware sync-break detection, automatic checksum generation (classic or enhanced), and configurable baud rates down to 1.2 kbps. No external transceiver is required for basic LIN slave operation, though ISO 17987-compliant physical layer drivers are needed for full automotive compliance.

What is the purpose and location of the flash library RAM usage for the R5F100JFGFA#X0?

The R5F100JFGFA#X0 reserves 256 bytes of SRAM starting at address FAF00H for the Flash Self-Programming Library. This dedicated area stores temporary variables and stack frames during data flash erase/write operations, ensuring safe BGO execution. Developers must exclude this region from linker scripts and avoid runtime allocation to prevent corruption during firmware updates.

How many analog input channels does the R5F100JFGFA#X0 support, and which pins are assigned to ANI18?

The R5F100JFGFA#X0 supports up to 26 analog input channels. Channel ANI18 is exclusively assigned to pin P23, as confirmed in the RL78/G13 pin configuration tables (Page 13, Figure 1.3.9). This mapping is fixed and cannot be remapped to other pins; P23 must be configured as analog input in the ADPC register to enable ANI18 sampling.

What industrial temperature grade does the R5F100JFGFA#X0 carry, and how is it indicated in the part number?

The R5F100JFGFA#X0 carries the 'G' suffix in its part number, indicating Industrial grade with guaranteed operation from −40°C to +105°C. This is explicitly defined in Section 1.2 ("List of Part Numbers") of the datasheet, where 'G' denotes extended temperature qualification for harsh environments such as motor drives and outdoor metering equipment.