Renesas R5F104FGAFP#50

Overview

R5F104FGAFP#50 from Renesas is a 44-pin LQFP, 96 KB flash, 12 KB RAM RL78/G14 16-bit microcontroller with ultra-low-power operation (66 μA/MHz), 32 MHz max CPU speed, and integrated peripherals including 10-bit ADC (16 channels), UART/LIN, I²C, SPI, RTC, and hardware DTC/ELC. It targets battery-powered industrial sensors and embedded control systems requiring extended runtime and robust peripheral integration.

For engineers reviewing the R5F104FGAFP#50 datasheet, R5F104FGAFP#50 pinout, R5F104FGAFP#50 application, or R5F104FGAFP#50 equivalent, key selection criteria include its 44-pin LQFP-0.8 mm pitch package, -40°C to +85°C industrial temperature grade (D suffix), 96 KB code flash with data flash support, and verified compatibility with Renesas E2 emulator and CS+ IDE for rapid firmware development.

Technical Context

The R5F104FGAFP#50 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 µs (32 MHz) to 30.5 µs (32.768 kHz). It integrates a 10-bit A/D converter with up to 16 analog inputs, internal reference voltage (1.45 V), and temperature sensor - all operable across 1.6–5.5 V supply range.

Its peripheral set includes 3 UART/LIN channels, 4–10 I²C interfaces, 3–8 CSI (SPI-compatible) channels, 8–12 16-bit timers (including TAU, RJ, RD, RG units), real-time clock with calendar/alarm, and Event Link Controller (ELC) enabling direct peripheral-to-peripheral event triggering without CPU intervention.

Key Specifications

Pinout & Package

44-pin plastic LQFP (10 × 10 mm, 0.8 mm pitch), JEDEC MS-026 compliant, with exposed thermal pad option (not present in this variant). Pin 1 marked by index notch; pin 22 = VDD, pin 21 = VSS, pin 23 = RESET, pin 12 = X1 (32.768 kHz crystal input), pin 11 = X2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104FEAFP#50, the R5F104FGAFP#50 provides 50% more flash and >100% more RAM for complex control algorithms and secure boot, while R5F104GGAFP#50 adds further headroom for OTA update partitions and encrypted key storage - all within identical thermal and layout constraints.

Availability

R5F104FGAFP#50 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and home appliance control systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized Renesas distribution channels.

Supply support for R5F104FGAFP#50 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 infrastructure markets.

The RL78/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications - balancing performance, integration, and energy efficiency without external PMIC dependency.

FAQ

What is the maximum operating frequency and core architecture of the R5F104FGAFP#50?

The R5F104FGAFP#50 features a 16-bit RL78 CPU core with 3-stage pipeline CISC architecture and operates at up to 32 MHz, delivering 44 DMIPS performance. Its minimum instruction execution time is 0.03125 µs at 32 MHz using the high-speed on-chip oscillator, and it supports ultra-low-speed operation down to 32.768 kHz for RTC and low-power sensing tasks - all within the same R5F104FGAFP#50 silicon die.

Does the R5F104FGAFP#50 support hardware debugging, and what interface is used?

Yes, the R5F104FGAFP#50 supports full-featured on-chip debugging via Single-Wire Debug (SWD) interface using the TOOL0 and TOOLRxD/TX pins. This enables real-time breakpoint setting, memory inspection, register read/write, and trace capabilities through Renesas E2 or E2 Lite emulators - all without consuming dedicated debug pins or requiring JTAG header space on the R5F104FGAFP#50 PCB layout.

What are the analog capabilities of the R5F104FGAFP#50, and how many channels does the ADC support?

The R5F104FGAFP#50 integrates a 10-bit successive-approximation ADC with up to 16 input channels (ANI0–ANI15), internal 1.45 V reference voltage, and on-chip temperature sensor. It supports differential input mode using AVREFP/AVREFM pins and operates across the full 1.6–5.5 V supply range - enabling accurate ratiometric measurements for pressure, current, and environmental sensors directly interfaced to the R5F104FGAFP#50.

How does the R5F104FGAFP#50 handle low-power operation, and what is its lowest current consumption mode?

The R5F104FGAFP#50 achieves 0.60 μA typical current consumption in HALT mode with only the real-time clock (RTC) and low-voltage detector (LVD) active - verified at VDD = 3.0 V and TA = 25°C. This mode retains RAM content and allows wake-up via external interrupt or RTC alarm, making it ideal for infrequent-event monitoring in battery-powered applications built around the R5F104FGAFP#50.

Is the R5F104FGAFP#50 pin-compatible with other RL78/G14 variants in the same package?

Yes, the R5F104FGAFP#50 is fully pin-compatible with all other 44-pin LQFP RL78/G14 devices sharing the same FP package code (e.g., R5F104FEAFP#50, R5F104GGAFP#50), including identical pin functions, electrical characteristics, and thermal pad configuration. This allows direct substitution within the same PCB footprint when scaling flash/RAM requirements - a verified design feature of the R5F104FGAFP#50 family.