Renesas R5F104GEDFB#X0

Overview

R5F104GEDFB#X0 from Renesas is a 48-pin LFQFP, 0.5 mm pitch, industrial-grade (G) 16-bit RL78/G14 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 in RTC+LVD mode), and integrates UART, I²C, SPI, 16-bit timers, 10-bit ADC (16 channels), and real-time clock - deployed in motor control and sensor interface modules.

For engineers reviewing the R5F104GEDFB#X0 datasheet, R5F104GEDFB#X0 pinout, R5F104GEDFB#X0 application, or R5F104GEDFB#X0 equivalent, key selection criteria include its G-grade temperature rating, LFQFP-48 package compatibility, integrated data flash rewrite capability (1M cycles), and support for background operation during flash programming - critical for field-upgradable embedded systems requiring long-term reliability.

Technical Context

The R5F104GEDFB#X0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs min @32 MHz to 30.5 µs @32.768 kHz). It supports multiply/divide/accumulate instructions and 1 MB address space with four register banks.

Its peripheral set includes Timer Array Unit (TAU) with up to 8 channels, 12-bit interval timer, calendar-based RTC with alarm/correction, watchdog timer with dedicated low-speed oscillator, and Event Link Controller (ELC) enabling hardware-triggered peripheral chaining without CPU intervention - optimizing deterministic real-time response.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP, 7 × 7 mm, 0.5 mm pitch, exposed pad not present (non-HWQFN).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104GEDFB#X0, R5F104GEGFB#X0 offers scalable memory for evolving firmware needs without PCB redesign, while R5F104LEDFB#X0 trades temperature range and memory for lower unit cost - enabling tiered product variants from a single layout.

Availability

R5F104GEDFB#X0 is available at Aetrix Electronics and suitable for motor control systems, industrial sensor nodes, smart appliance UIs, and energy metering modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F104GEDFB#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G14 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency for battery-operated and thermally constrained systems.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104GEDFB#X0?

The R5F104GEDFB#X0 operates at up to 32 MHz and delivers 44 DMIPS performance. This metric reflects its RL78 CPU core's optimized instruction throughput at rated speed, validated under standard test conditions per Renesas' benchmark methodology. The R5F104GEDFB#X0 achieves this with its 3-stage pipeline and efficient CISC architecture - making it suitable for real-time control tasks such as motor commutation and sensor fusion.

Does the R5F104GEDFB#X0 support background data flash rewriting while executing code from main flash memory?

Yes, the R5F104GEDFB#X0 supports Background Operation (BGO) for data flash. This allows the CPU to execute instructions from program memory while concurrently rewriting data flash - essential for seamless firmware updates and parameter logging. The R5F104GEDFB#X0 guarantees 1,000,000 write cycles at VDD = 1.8–5.5 V, with built-in error detection during write/erase sequences.

What is the operating temperature range specified for the R5F104GEDFB#X0, and what does the 'G' suffix indicate?

As indicated by the 'G' in its part number, the R5F104GEDFB#X0 is rated for −40 to +105°C ambient operation - qualifying it for industrial and under-hood automotive applications. This extended temperature grade ensures reliable functionality in high-thermal-stress environments where consumer-grade ('A') or standard industrial-grade ('D') variants would fail. The R5F104GEDFB#X0 maintains full specification compliance across this full range.

How many analog input channels and what ADC resolution does the R5F104GEDFB#X0 provide?

The R5F104GEDFB#X0 integrates a 10-bit successive approximation ADC with up to 16 analog input channels (ANI0–ANI15), plus two additional VCOUT outputs usable as analog comparators. It supports internal 1.45 V reference and temperature sensor input, enabling accurate ratiometric measurements without external references. This ADC configuration is directly accessible via the R5F104GEDFB#X0's dedicated ANI pin group and configured through ADCSR and ADM0 registers.

Is the R5F104GEDFB#X0 pin-compatible with other RL78/G14 devices in the 48-pin LFQFP package?

Yes, all RL78/G14 devices in the 48-pin LFQFP package - including R5F104GEDFB#X0, R5F104GEGFB#X0, and R5F104LEDFB#X0 - share identical pinouts and mechanical footprint (PLQP0048KF-A/KB-B). Signal assignments are consistent across variants; only memory size, temperature grade, and some peripheral enablement differ. This allows hardware reuse across firmware variants and simplifies migration paths within the R5F104GEDFB#X0 family.