Renesas R5F104BCAFP#30

Overview

R5F104BCAFP#30 from Renesas is a 32-bit RL78/G14 microcontroller with 16 KB flash, 2.5 KB RAM, and 32-pin LQFP-0.8 mm package, operating at 1.6–5.5 V and delivering 44 DMIPS at 32 MHz. It integrates an ultra-low-power CPU core (66 μA/MHz active, 0.60 μA RTC+LVD), 10-bit 8-channel ADC, UART/SPI/I²C interfaces, and real-time clock for embedded control in battery-powered industrial sensors and home appliances.

For engineers reviewing the R5F104BCAFP#30 datasheet, R5F104BCAFP#30 pinout, R5F104BCAFP#30 application, or R5F104BCAFP#30 equivalent, this page delivers verified specifications, validated pin functions, confirmed low-power operating modes (HALT/STOP/SNOOZE), and direct alternative part comparisons for rapid design-in and supply continuity planning.

Technical Context

The R5F104BCAFP#30 implements the RL78 CISC CPU core with 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 features on-chip debug, self-programming flash with boot swapping, and background data flash rewriting (BGO) enabling concurrent code execution and nonvolatile storage updates.

Peripheral integration includes Event Link Controller (ELC) for hardware-triggered peripheral chaining, Data Transfer Controller (DTC) with block/repeat transfer modes, and configurable I/O ports supporting 1.8/2.5/3.0 V level shifting - all optimized for deterministic real-time response in resource-constrained edge nodes.

Key Specifications

Pinout & Package

Package: 32-pin plastic LQFP (7 × 7 mm, 0.8 mm pitch), RoHS-compliant, industrial-grade temperature range (−40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104BCAFP#30, R5F104BAFP#30 offers identical capability at equal cost, while R5F104BDAFP#30 provides scalable memory for evolving feature sets - both maintain pin compatibility and require no PCB changes.

Availability

R5F104BCAFP#30 is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance control units, and battery-powered metering applications requiring stable component supply and long-term lifecycle support.

Supply support for R5F104BCAFP#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 specializing in microcontrollers, analog, and power management solutions for automotive, industrial, and IoT markets.

The RL78/G14 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, energy efficiency, and integrated peripherals for rapid development of intelligent edge devices.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104BCAFP#30?

The R5F104BCAFP#30 operates up to 32 MHz using its high-speed on-chip oscillator, delivering 44 DMIPS of processing performance. Its minimum instruction execution time is 0.03125 µs under these conditions, enabling responsive real-time control in applications such as motor commutation and sensor fusion where deterministic timing is critical. The R5F104BCAFP#30 maintains full peripheral functionality across its entire 1.6–5.5 V supply range.

Does the R5F104BCAFP#30 support in-system programming and secure firmware updates?

Yes, the R5F104BCAFP#30 supports full in-system programming via its on-chip debug interface and includes flash shield window protection to restrict write access to designated memory regions. It also implements boot swapping for atomic firmware updates - allowing new code to be written to a secondary bank while the system runs from the primary bank, then switching execution upon successful verification. This capability is integral to the R5F104BCAFP#30's architecture and requires no external hardware.

What low-power modes are available on the R5F104BCAFP#30, and what are their typical current draws?

The R5F104BCAFP#30 offers HALT mode (66 μA/MHz), STOP mode (0.60 μA with RTC and LVD active), and SNOOZE mode (intermediate power state with selected peripherals active). These modes are software-configurable and retain RAM contents and register states. The 0.60 μA STOP current enables multi-year battery operation in applications like wireless sensor transmitters, making the R5F104BCAFP#30 suitable for deployments where battery replacement is impractical.

Can the R5F104BCAFP#30 interface directly with 1.8 V or 3.3 V peripherals?

Yes, the R5F104BCAFP#30 supports different-potential interfacing: its I/O ports can be configured for TTL input buffer operation and include on-chip pull-up resistors, enabling direct connection to 1.8 V, 2.5 V, and 3.0 V logic families without level-shifting circuitry. This capability is documented in the electrical characteristics section for the R5F104BCAFP#30 and simplifies mixed-voltage system design in industrial and consumer products.

What serial communication interfaces does the R5F104BCAFP#30 integrate, and how many channels are available?

The R5F104BCAFP#30 integrates simplified SPI (CSI) with up to 8 channels, UART/LIN with up to 4 channels, and I²C/simplified I²C with up to 10 channels - all configurable via peripheral I/O redirection registers. For the R5F104BCAFP#30 specifically, pin mapping supports at least 3 CSI, 2 UART, and 4 I²C channels simultaneously, enabling concurrent communication with displays, sensors, and host controllers in compact embedded systems.