Renesas R5F104GLAFB#30

Overview

R5F104GLAFB#30 from Renesas is a 48-pin LFQFP-packaged 16-bit RL78/G14 microcontroller with 128 KB flash, 12 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 RTC+LVD), and integrates 10-bit ADC (16 channels), UART/SCI/I²C interfaces, and real-time clock for embedded control in motor drives and sensor nodes.

For engineers reviewing the R5F104GLAFB#30 datasheet, R5F104GLAFB#30 pinout, R5F104GLAFB#30 application, or R5F104GLAFB#30 equivalent, key selection criteria include its 48-pin LFQFP-0.5 mm pitch package, industrial-grade temperature rating (G suffix), integrated DTC and ELC peripherals for deterministic event handling, and support for background data flash rewriting with 1M-cycle endurance.

Technical Context

The R5F104GLAFB#30 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 dedicated hardware accelerators for multiply/divide/accumulate operations and a 1 MB address space with four register banks.

Its peripheral subsystem integrates an Event Link Controller (ELC) enabling direct signal routing between 19–26 event sources and target functions without CPU intervention, and a Data Transfer Controller (DTC) supporting normal, repeat, and block transfer modes activated by interrupt sources-including chain transfer for multi-step memory operations.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (7 × 7 mm, 0.5 mm pitch), RoHS-compliant, industrial-grade (G-suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104GLAFB#30, R5F104GHAFB#30 provides headroom for complex connectivity stacks, while R5F104GLGFB#30 offers identical electrical behavior with alternate process qualification - both retain full pin and code compatibility without PCB changes.

Availability

R5F104GLAFB#30 is available at Aetrix Electronics and suitable for industrial motor control, smart metering, sensor node deployment, and home appliance manufacturing requiring stable component supply across long product lifecycles.

Supply support for R5F104GLAFB#30 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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G14 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - emphasizing energy efficiency, integrated analog, and deterministic real-time response in compact packages.

FAQ

What is the maximum operating frequency and associated DMIPS rating for the R5F104GLAFB#30?

The R5F104GLAFB#30 operates at up to 32 MHz with a measured performance of 44 DMIPS. This rating is achieved using the RL78 CPU core's 3-stage pipeline and optimized instruction set, including hardware multiply/divide support. The high-speed on-chip oscillator ensures stable timing without external crystals for many applications, and the 32 MHz speed is fully supported across the device's entire industrial temperature range (-40°C to +105°C).

Does the R5F104GLAFB#30 support background data flash rewriting while executing application code?

Yes, the R5F104GLAFB#30 supports Background Operation (BGO) for data flash rewriting. During BGO, the CPU can execute instructions from program memory while the data flash is being rewritten - enabling seamless firmware updates or parameter storage without halting real-time tasks. The data flash has a rated endurance of 1,000,000 write cycles and operates across the full 1.8–5.5 V supply range.

What are the key power-saving modes available on the R5F104GLAFB#30, and what is the lowest achievable current draw?

The R5F104GLAFB#30 offers HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it achieves 0.60 μA typical current draw at 25°C - verified across the full -40°C to +105°C range. This ultra-low quiescent current enables battery-powered applications like utility meters and wireless sensors to operate for over a decade on primary lithium cells.

How many analog input channels does the integrated 10-bit ADC support on the R5F104GLAFB#30?

The R5F104GLAFB#30 integrates a 10-bit successive-approximation ADC with up to 16 analog input channels (ANI0–ANI18, excluding reserved pins). It includes an internal 1.45 V reference voltage and an on-die temperature sensor, allowing direct thermal monitoring without external components. Input voltage range is 0 V to VDD, supporting single-ended or differential configurations depending on pin assignment.

Is the R5F104GLAFB#30 pin-compatible with other RL78/G14 variants in the same 48-pin LFQFP package?

Yes, the R5F104GLAFB#30 is pin-compatible with all RL78/G14 devices in the 48-pin LFQFP (0.5 mm pitch) package, including R5F104GHAFB#30, R5F104GJAFB#30, and R5F104GKAFB#30. Pin functions, power domains, and peripheral mappings are consistent across this package group, enabling drop-in replacement for memory or feature scaling - provided software accommodates differences in flash size, RAM allocation, and optional peripherals.