Renesas R5F104BGANA#20

Overview

R5F104BGANA#20 from Renesas is a 32-pin HWQFN-packaged RL78/G14 16-bit microcontroller with 96 KB flash, 12 KB RAM, and 8 KB data flash, operating at 1.6–5.5 V and supporting -40°C to +105°C industrial temperature range (G-grade). It integrates a 32 MHz RL78 CPU core delivering 44 DMIPS, ultra-low-power HALT/STOP/SNOOZE modes (0.60 μA RTC+LVD), 10-bit ADC (20 channels), UART/I²C/CSI interfaces, and real-time clock with calendar function - deployed in motor control and sensor interface modules.

For engineers reviewing the R5F104BGANA#20 datasheet, R5F104BGANA#20 pinout, R5F104BGANA#20 application, or R5F104BGANA#20 equivalent, key selection criteria include its G-grade extended temperature support, 32-pin 5×5 mm HWQFN package with exposed pad, integrated data flash rewrite capability (1M cycles), and hardware event linking via ELC for deterministic peripheral coordination.

Technical Context

The R5F104BGANA#20 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 uses on-chip high-accuracy oscillator (±1.0% over -20°C to +85°C) and supports background operation of data flash rewriting while executing code from program memory.

Its peripheral set includes Event Link Controller (ELC) for direct hardware-triggered peripheral activation, Data Transfer Controller (DTC) with chain transfer, and dual-voltage I/O enabling 1.8/2.5/3.0 V device interfacing without level shifters - all optimized for deterministic real-time response in resource-constrained embedded systems.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch) with exposed die pad recommended to be connected to VSS.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F104CGANA#20, the R5F104BGANA#20 provides 3.8× more flash and 4.8× more RAM for feature-rich firmware; versus R5F104BGAFP#30, it offers 36% smaller PCB footprint and improved thermal dissipation via exposed pad - critical for sealed industrial enclosures.

Availability

R5F104BGANA#20 is available at Aetrix Electronics and suitable for motor control, sensor interface modules, industrial HMI panels, and smart power outlets requiring stable component supply and long-term industrial qualification.

Supply support for R5F104BGANA#20 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 management solutions for automotive, industrial, and IoT markets.

The RL78/G14 product line delivers true low-power 16-bit MCUs targeting cost-sensitive industrial and consumer applications requiring extended temperature operation, integrated peripherals, and robust flash reliability.

FAQ

What is the maximum operating frequency and core performance of the R5F104BGANA#20?

The R5F104BGANA#20 operates at up to 32 MHz using the RL78 CPU core and delivers 44 DMIPS of processing performance. Its instruction timing is configurable from 0.03125 µs (high-speed mode) to 30.5 µs (ultra-low-speed mode), enabling precise trade-offs between throughput and power consumption in the R5F104BGANA#20 design.

Does the R5F104BGANA#20 support data flash rewriting during program execution?

Yes, the R5F104BGANA#20 supports background operation (BGO) of data flash memory, allowing instructions to execute from code flash while simultaneously rewriting the 8 KB data flash. This capability enables seamless firmware parameter updates and logging without halting real-time operations in the R5F104BGANA#20.

What package type and thermal considerations apply to the R5F104BGANA#20?

The R5F104BGANA#20 uses a 32-pin HWQFN package (5 × 5 mm, 0.5 mm pitch) with an exposed die pad that Renesas recommends connecting directly to VSS for optimal thermal performance. This construction supports reliable operation at +105°C ambient, making the R5F104BGANA#20 suitable for enclosed industrial environments.

How does the Event Link Controller (ELC) enhance real-time response in the R5F104BGANA#20?

The ELC in the R5F104BGANA#20 enables direct hardware-level linking of 19–26 event sources (e.g., timer overflow, ADC completion) to peripheral functions (e.g., PWM trigger, DTC start) without CPU involvement. This eliminates interrupt latency and ISR overhead, ensuring sub-microsecond deterministic response critical in the R5F104BGANA#20's motor control and sensor acquisition roles.

What is the analog capability of the R5F104BGANA#20, and how is it applied in sensor systems?

The R5F104BGANA#20 integrates a 10-bit ADC with up to 20 input channels, internal 1.45 V reference, and on-chip temperature sensor - enabling direct connection of resistive, capacitive, and thermistor-based sensors. In sensor interface applications, this allows the R5F104BGANA#20 to perform calibrated measurements without external references or signal conditioning ICs.