Renesas R5F104GLANA#U0

Overview

R5F104GLANA#U0 from Renesas is a 48-pin HWQFN-packaged 16-bit RL78/G14 microcontroller with 512 KB flash, 48 KB RAM, and 8 KB data flash, operating from 1.6 V to 5.5 V across -40°C to +105°C industrial temperature range. 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 dual A/D converters (10-bit, 20-channel), UART/LIN, I²C, CSI, and real-time clock for embedded control in motor drives and sensor nodes.

For engineers reviewing the R5F104GLANA#U0 datasheet, R5F104GLANA#U0 pinout, R5F104GLANA#U0 application, or R5F104GLANA#U0 equivalent, key selection criteria include its industrial-grade temperature rating (−40°C to +105°C), 48-pin 0.5 mm pitch HWQFN package, integrated data flash with 1M rewrite cycles, background operation capability, and support for LIN bus communication in automotive body electronics.

Technical Context

The R5F104GLANA#U0 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 includes an Event Link Controller (ELC) enabling direct peripheral-to-peripheral event triggering without CPU intervention and a Data Transfer Controller (DTC) supporting chain transfer for efficient memory-mapped peripheral handling.

Its power management system integrates on-chip POR, 14-level LVD with interrupt/reset selection, HALT/STOP/SNOOZE low-power modes, and a high-accuracy ±1.0% on-chip oscillator (1–64 MHz). The device supports self-programming with boot swap and flash shield window functions, and executes instructions from program memory during background data flash rewriting (BGO).

Key Specifications

Pinout & Package

Package: 48-pin HWQFN (7 × 7 mm, 0.5 mm pitch), exposed die pad recommended to be connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104GLANA#U0, R5F104GLAFB#V0 offers identical functionality in a more manufacturable LQFP package, while R5F104LLANA#U0 provides a direct pin-compatible downgrade path with reduced memory-both preserve ELC, BGO, and LIN capabilities critical for real-time embedded control.

Availability

R5F104GLANA#U0 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and smart metering applications requiring stable component supply, long-term lifecycle assurance, and guaranteed industrial temperature grade performance.

Supply support for R5F104GLANA#U0 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 is designed for ultra-low-power general-purpose embedded control, targeting applications demanding high integration, robust industrial qualification, and seamless migration from legacy 8/16-bit platforms.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104GLANA#U0?

The R5F104GLANA#U0 operates at up to 32 MHz with a measured performance of 44 DMIPS. This value is derived from the RL78 CPU core's 3-stage pipeline architecture and validated under standard test conditions per Renesas' benchmark methodology. The R5F104GLANA#U0 achieves this performance while maintaining 66 μA/MHz active current consumption, making it suitable for compute-constrained, power-sensitive applications.

Does the R5F104GLANA#U0 support LIN bus communication, and if so, how is it implemented?

Yes, the R5F104GLANA#U0 supports LIN bus communication through dedicated UART hardware with built-in LIN protocol assist features-including automatic sync-break detection, checksum generation (classic and enhanced), and error recovery. These functions are implemented in the UART peripheral without CPU overhead, enabling compliant ISO 17987-4 communication on any of its four UART channels, such as UART2 used in typical body-control modules.

What are the data flash endurance and rewrite voltage requirements for the R5F104GLANA#U0?

The R5F104GLANA#U0 includes 8 KB of data flash rated for 1,000,000 write/erase cycles (typical) and supports rewriting across the full operating voltage range of 1.8 V to 5.5 V. It also enables background operation (BGO), allowing program execution from code flash while data flash is being rewritten-critical for fail-safe firmware updates and runtime parameter storage in the R5F104GLANA#U0.

How does the R5F104GLANA#U0 manage power in low-power modes, and what peripherals remain active in STOP mode?

In STOP mode, the R5F104GLANA#U0 draws just 0.60 μA while keeping the real-time clock (RTC) and low-voltage detector (LVD) fully operational. Wake-up sources include RTC alarm, LVD interrupt, and external pins (INTP0–INTP9). No CPU or main clock is active, but the RTC maintains calendar time and alarm functionality-making the R5F104GLANA#U0 ideal for battery-powered devices requiring precise timekeeping with minimal quiescent current.

Is the R5F104GLANA#U0 pin-compatible with other RL78/G14 variants, and what package options share the same pinout?

Yes, the R5F104GLANA#U0 is pin-compatible with all RL78/G14 devices in the 48-pin HWQFN (NA) package, including variants like R5F104GAANA#U0 and R5F104LLANA#U0. Identical pin mapping enables hardware reuse across memory configurations. However, it is not compatible with LQFP-48 (FB) or WFLGA-36 (LA) packages-even when sharing the same pin count-due to differing pin assignments and electrical characteristics.