Renesas R5F104PFGFB#10

Overview

R5F104PFGFB#10 from Renesas is a 100-pin LFQFP (0.5 mm pitch), industrial-grade RL78/G14 16-bit microcontroller with 96 KB flash, 12 KB RAM, and 8 KB data flash, operating from 1.6–5.5 V at -40 to +105°C. It delivers 44 DMIPS at 32 MHz, features ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD mode), and integrates UART, I²C, SPI, 12-bit RTC, 10-bit ADC (16 ch), and on-chip debug.

For engineers reviewing the R5F104PFGFB#10 datasheet, R5F104PFGFB#10 pinout, R5F104PFGFB#10 application, or R5F104PFGFB#10 equivalent, key selection considerations include its G-grade temperature rating, LFQFP-100 0.5 mm pitch package, integrated event link controller (ELC) for peripheral coordination, and support for background data flash rewriting with 1M-cycle endurance.

Technical Context

The R5F104PFGFB#10 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 µs (32 MHz high-speed mode) to 30.5 µs (32.768 kHz ultra-low-speed mode). It includes multiply/divide/accumulate instructions and a 1 MB address space.

Its peripheral set is managed via Event Link Controller (ELC) enabling direct hardware-triggered transfers between 19–26 event sources and peripherals without CPU intervention, and Data Transfer Controller (DTC) supporting normal, repeat, and block transfer modes activated by interrupts with chain transfer capability.

Key Specifications

Pinout & Package

Package: 100-pin LFQFP, 14 × 14 mm body, 0.5 mm pitch, exposed thermal pad (recommended to connect to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104PFGFB#10, R5F104PGGFB#10 offers 33% more flash and 33% more RAM for enhanced firmware scalability, while R5F104PHGFB#10 provides sufficient headroom for secure boot partitioning and future feature expansion - all retaining identical G-grade temperature range, LFQFP-100 footprint, and peripheral compatibility.

Availability

R5F104PFGFB#10 is available at Aetrix Electronics and suitable for industrial motor control, smart metering, and medical device applications requiring stable component supply, extended temperature operation, and long-term manufacturing continuity.

Supply support for R5F104PFGFB#10 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 targets cost-sensitive, ultra-low-power general-purpose embedded systems - balancing performance, integration, and energy efficiency for applications where battery life, thermal constraints, and BOM cost are critical.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104PFGFB#10?

The R5F104PFGFB#10 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 44 DMIPS of computational performance. Its ±1.0% oscillator accuracy over -20 to +85°C ensures reliable timing without external crystals in many applications. The RL78 core supports variable instruction cycle times - as fast as 0.03125 µs per instruction at 32 MHz or as slow as 30.5 µs at 32.768 kHz - enabling dynamic power/performance scaling in the R5F104PFGFB#10.

Does the R5F104PFGFB#10 support simultaneous operation of multiple serial interfaces?

Yes, the R5F104PFGFB#10 supports concurrent use of up to four serial interfaces: three UART/LIN channels (including UART0 with TOOL interface), four I²C/simplified I²C channels, and three CSI (SPI-compatible) channels. These operate independently with dedicated buffers and clock sources. The Event Link Controller (ELC) allows hardware-synchronized triggering between them - for example, initiating an I²C read upon UART frame completion - reducing CPU load and improving deterministic response in the R5F104PFGFB#10.

What are the flash memory configuration and write endurance specifications for the R5F104PFGFB#10?

The R5F104PFGFB#10 contains 96 KB of code flash memory organized in 1 KB blocks, and 8 KB of data flash memory. Data flash supports background operation (BGO), allowing program execution during erase/write cycles. Its endurance is rated at 1,000,000 write/erase cycles (typical) across the full VDD range of 1.8–5.5 V. Code flash supports self-programming with boot swapping and flash shield window protection - essential for secure firmware updates in the R5F104PFGFB#10.

How does the R5F104PFGFB#10 manage low-power operation in industrial environments?

The R5F104PFGFB#10 achieves ultra-low power via multiple hardware-controlled modes: HALT (CPU stopped, peripherals active), STOP (all clocks halted except RTC/LVD), and SNOOZE (selected peripherals run autonomously). Its 0.60 μA STOP mode with RTC + LVD active meets stringent industrial battery-backup requirements. The G-grade qualification (-40°C to +105°C) ensures stable operation across wide ambient ranges, and the on-chip voltage detector (14 selectable thresholds) enables precise brown-out response - all integral to robust low-power design with the R5F104PFGFB#10.

Is the R5F104PFGFB#10 pin-compatible with other RL78/G14 variants in the same package?

Yes, the R5F104PFGFB#10 is fully pin-compatible with all other RL78/G14 devices in the 100-pin LFQFP-0.5 mm package (e.g., R5F104PGGFB#10, R5F104PHGFB#10), sharing identical pin functions, electrical characteristics, and thermal pad layout. This enables direct substitution within the same footprint for memory or peripheral scaling - provided software accounts for differences in flash/RAM size and peripheral enablement. No PCB changes are required when migrating between these G-grade LFQFP-100 variants of the R5F104PFGFB#10 family.