Renesas R5F104JHGFA#V0

Overview

R5F104JHGFA#V0 from Renesas is a 52-pin LQFP-0.65 mm pitch, industrial-grade (G) RL78/G14 16-bit microcontroller with 256 KB flash, 8 KB data flash, 20 KB RAM, and operation from -40°C to +105°C. It integrates a 32 MHz RL78 CPU core delivering 44 DMIPS, ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD), 12-bit ADC (20 channels), dual DAC, RTC with calendar, and multiple serial interfaces including UART/LIN, I²C, and CSI.

For engineers reviewing the R5F104JHGFA#V0 datasheet, R5F104JHGFA#V0 pinout, R5F104JHGFA#V0 application, or R5F104JHGFA#V0 equivalent, key selection considerations include its 52-pin LQFP package with 0.65 mm pitch, industrial temperature rating (−40°C to +105°C), integrated LIN-capable UARTs for automotive body electronics, and hardware event linking via ELC for deterministic peripheral coordination.

Technical Context

The R5F104JHGFA#V0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It supports on-chip debug, self-programming with boot swap, and background operation during data flash rewriting.

Its peripheral set includes an Event Link Controller (ELC) enabling direct hardware-triggered peripheral activation without CPU intervention, a Data Transfer Controller (DTC) supporting chain transfers, and a Real-Time Clock with calendar, alarm, and clock correction - all operating in ultra-low-power STOP and SNOOZE modes.

Key Specifications

Pinout & Package

Package: 52-pin LQFP, 10 × 10 mm body, 0.65 mm pitch, exposed pad not applicable (plastic LQFP).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104JEGFA#V0 and R5F104JHGFB#V0, the R5F104JHGFA#V0 provides maximum code density in a standard 0.65 mm pitch LQFP package - ideal for industrial designs needing field-upgradable firmware and layout compatibility with legacy 10×10 mm footprints.

Availability

R5F104JHGFA#V0 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor hubs, smart thermostats, and portable medical monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F104JHGFA#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 automotive, industrial, and IoT markets.

The RL78/G14 product line delivers true low-power 16-bit performance for general-purpose embedded control, targeting cost-sensitive, energy-efficient applications requiring rich analog integration and robust industrial qualification.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104JHGFA#V0?

The R5F104JHGFA#V0 operates at up to 32 MHz with its RL78 CPU core, achieving 44 DMIPS performance. This rating is measured under standard conditions (VDD = 3.3 V, TA = 25°C) using the EEMBC CoreMark benchmark and reflects sustained integer throughput with cache disabled and pipeline fully utilized.

Does the R5F104JHGFA#V0 support LIN communication, and which UART channels are LIN-capable?

Yes, the R5F104JHGFA#V0 supports LIN 2.2A/B communication via its UART2 and UART3 modules (P13/TxD2 and P14/RxD2 pins), which include built-in LIN break detection, sync field generation, and checksum calculation. No external LIN transceiver is required for basic slave-node implementation.

What are the flash memory configuration details - block size, erase granularity, and security features - for the R5F104JHGFA#V0?

The R5F104JHGFA#V0 features 256 KB of on-chip code flash organized in 1 KB blocks. Erase is performed per block; individual blocks can be locked against erase/write via flash shield window settings. Security functions include prohibition of block erase/rewrite and on-chip debug disable after programming.

How does the Real-Time Clock (RTC) in the R5F104JHGFA#V0 differ from basic timer-based implementations?

The R5F104JHGFA#V0 RTC is a dedicated calendar module supporting year/month/day/hour/minute/second with leap-year correction, alarm interrupts, periodic interrupts (1 Hz to 1 month), and software-adjustable clock correction (±1 ppm steps). It operates independently in STOP mode using only the 32.768 kHz crystal, unlike general-purpose timers that require CPU supervision.

Can the R5F104JHGFA#V0 operate from a single 1.8 V supply, and what peripherals remain functional at that voltage?

Yes, the R5F104JHGFA#V0 supports 1.6 V to 5.5 V operation, and all core peripherals - including 10-bit ADC (with internal 1.45 V reference), 8-bit DACs, RTC, UART, I²C, CSI, timers, and GPIO - are fully specified and functional at 1.8 V. The high-accuracy on-chip oscillator remains stable within ±1.0% across this range.