Renesas R5F104GCGFB#X0

Overview

R5F104GCGFB#X0 from Renesas is a 48-pin LFQFP, 128 KB flash, 12 KB RAM RL78/G14 16-bit MCU operating from 1.6–5.5 V, delivering 44 DMIPS at 32 MHz with ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD mode), used in industrial sensor nodes and battery-powered control modules.

For engineers reviewing the R5F104GCGFB#X0 datasheet, R5F104GCGFB#X0 pinout, R5F104GCGFB#X0 application, or R5F104GCGFB#X0 equivalent, key selection criteria include its industrial-grade temperature range (−40°C to +105°C), integrated 10-bit 20-channel ADC, dual UART/LIN support, and hardware DTC/ELC for deterministic real-time peripheral coordination.

Technical Context

The R5F104GCGFB#X0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 µs (32 MHz high-speed oscillator) to 30.5 µs (32.768 kHz subsystem clock). It integrates a Data Transfer Controller (DTC) activated by 19–26 event sources and an Event Link Controller (ELC) enabling direct peripheral-to-peripheral signal routing without CPU intervention.

Its memory subsystem includes 128 KB on-chip code flash (1 KB block size, security-protected erase/write), 4 KB data flash with background operation (BGO) and 1M-cycle rewrite endurance, and 12 KB RAM. Power management features HALT, STOP, and SNOOZE modes plus on-chip POR and 14-level LVD.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (7 × 7 mm, 0.5 mm pitch), lead-free, RoHS-compliant. Exposed pad recommended for thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104GCGFB#X0, R5F104GHGFB#X0 offers higher memory capacity for future-proofing, while R5F104GGGFB#X0 reduces cost without sacrificing peripheral compatibility or industrial temperature rating.

Availability

R5F104GCGFB#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, and programmable logic relays requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R5F104GCGFB#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 family targets cost-sensitive, ultra-low-power industrial and consumer applications requiring robust analog integration, real-time responsiveness, and long-term supply stability.

FAQ

What is the maximum operating frequency and processing performance of the R5F104GCGFB#X0?

The R5F104GCGFB#X0 operates up to 32 MHz using its high-accuracy on-chip oscillator (±1.0%), delivering 44 DMIPS. Its RL78 CPU core supports variable instruction timing - from 0.03125 µs at full speed to 30.5 µs in ultra-low-power 32.768 kHz mode - enabling dynamic performance scaling in the R5F104GCGFB#X0.

Does the R5F104GCGFB#X0 support LIN bus communication, and how is it implemented?

Yes, the R5F104GCGFB#X0 supports LIN 2.2 protocol through its UART peripherals, specifically UART2 and UART0, which include LIN break detection and synchronization capabilities. The R5F104GCGFB#X0 uses hardware-assisted LIN framing and checksum generation, reducing CPU load during frame transmission and reception in automotive and industrial sub-networks.

What analog peripherals are integrated into the R5F104GCGFB#X0, and what are their key specifications?

The R5F104GCGFB#X0 integrates a 10-bit resolution ADC with 20 input channels, internal 1.45 V reference, and on-chip temperature sensor; two 8-bit DAC channels with 0–VDD output range; and up to two analog comparators with selectable internal/external references. These analog resources are fully functional across the R5F104GCGFB#X0's −40°C to +105°C operating range.

How does the R5F104GCGFB#X0 manage ultra-low-power operation, and what are the lowest achievable current levels?

The R5F104GCGFB#X0 achieves 0.60 μA in STOP mode with only RTC and LVD active, and 66 μA/MHz in active mode. It supports HALT, STOP, and SNOOZE modes, with automatic wake-up from interrupts, RTC alarms, or LVD events. This ultra-low-power capability is guaranteed across the full −40°C to +105°C range for the R5F104GCGFB#X0.

What development tools and software support are available for the R5F104GCGFB#X0?

Renesas provides the CS+ IDE, e² studio (Eclipse-based), and Smart Configurator for the R5F104GCGFB#X0. Hardware tools include the E2 emulator Lite and E2 emulator, both supporting full debugging, flash programming, and real-time trace. The R5F104GCGFB#X0 is also supported by the RL78/G14 Target Board and Renesas' comprehensive middleware stack including USB, FAT, and LIN protocol stacks.