Renesas R5F104GCDFB#X0

Overview

R5F104GCDFB#X0 from Renesas is a 48-pin LFQFP, 0.5 mm pitch, industrial-grade (D) 16-bit RL78/G14 microcontroller with 96 KB flash, 12 KB RAM, and 8 KB data flash. It operates from 1.6–5.5 V, delivers 44 DMIPS at 32 MHz, and supports ultra-low-power modes (66 μA/MHz active, 0.60 μA RTC+LVD). It targets battery-powered industrial sensors and motor control interfaces requiring integrated analog peripherals and deterministic real-time response.

For engineers reviewing the R5F104GCDFB#X0 datasheet, R5F104GCDFB#X0 pinout, R5F104GCDFB#X0 application, or R5F104GCDFB#X0 equivalent, key selection criteria include its 48-pin LFQFP-0.5 mm package, 96 KB/12 KB/8 KB memory configuration, 10-bit 20-channel ADC with internal reference, dual UART/LIN support, and hardware event linking via ELC for deterministic peripheral coordination.

Technical Context

The R5F104GCDFB#X0 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 integrates a Data Transfer Controller (DTC) activated by 19–26 event sources and an Event Link Controller (ELC) enabling direct hardware-triggered peripheral operation without CPU intervention.

Its analog subsystem includes an 8/10-bit ADC with 20 input channels, internal 1.45 V reference, and temperature sensor; an 8-bit DAC with up to two outputs; and up to two comparators with window/high-speed/low-speed modes. Power management features HALT, STOP, and SNOOZE modes plus on-chip LVD with 14 selectable voltage thresholds.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP, 7 × 7 mm body, 0.5 mm pitch, lead-free, RoHS-compliant. Thermal pad not present (non-exposed die).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104GCDFB#X0, R5F104GHDFB#X0 offers headroom for complex firmware while maintaining identical footprint and peripheral timing; R5F104GCDFP#V0 trades finer pitch for broader manufacturability - both require no schematic change but differ in PCB land pattern and thermal profile.

Availability

R5F104GCDFB#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC actuators, programmable logic relays, and energy meter front-ends requiring stable component supply across extended product lifecycles.

Supply support for R5F104GCDFB#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, and power solutions for automotive, industrial, and IoT markets.

The RL78/G14 family delivers true low-power performance for general-purpose industrial applications, combining energy efficiency, rich analog integration, and real-time determinism in compact packages.

FAQ

What is the maximum operating frequency and associated performance of the R5F104GCDFB#X0?

The R5F104GCDFB#X0 operates at up to 32 MHz with its high-speed on-chip oscillator, delivering 44 DMIPS. Its ±1.0% oscillator accuracy over -20 to +85°C eliminates need for external crystal in many timing-critical applications, and instruction timing is configurable from 0.03125 µs (high-speed) to 30.5 µs (ultra-low-speed) depending on clock source.

Does the R5F104GCDFB#X0 support simultaneous operation of multiple serial interfaces?

Yes, the R5F104GCDFB#X0 supports concurrent use of up to 3 UART/LIN channels, 4–10 I²C/simplified I²C channels, and 3–8 CSI (SPI-compatible) channels. Each interface has independent clock domains and can be assigned to different pins via peripheral I/O redirection registers, enabling multi-protocol connectivity without external bridging.

How does the R5F104GCDFB#X0 manage power in battery-operated applications?

The R5F104GCDFB#X0 provides three ultra-low-power modes: HALT (66 μA/MHz), STOP (0.60 μA with RTC + LVD active), and SNOOZE (selected peripherals active while CPU sleeps). Its on-chip LVD offers 14 programmable voltage thresholds, and the RTC maintains calendar time with alarm and correction - collectively enabling multi-year operation on coin-cell batteries.

What analog capabilities does the R5F104GCDFB#X0 integrate for sensor interfacing?

The R5F104GCDFB#X0 integrates a 10-bit ADC with 20 input channels, internal 1.45 V reference, and factory-calibrated temperature sensor; an 8-bit DAC with up to two outputs; and up to two comparators supporting window, high-speed, and low-speed modes. These enable direct connection of thermistors, pressure sensors, current shunts, and analog actuators without external signal conditioning.

Is the R5F104GCDFB#X0 pin-compatible with other RL78/G14 variants in the same package?

Yes, all RL78/G14 devices in the 48-pin LFQFP-0.5 mm package - including R5F104GCDFB#X0, R5F104GHDFB#X0, and R5F104GLAFB - share identical pinouts and electrical characteristics. Memory size and peripheral enablement vary by part number, but PCB layout and firmware initialization remain consistent across this package group.