Renesas R5F104MHAFA#10

Overview

R5F104MHAFA#10 from Renesas is a 80-pin LQFP-0.65 mm pitch, industrial-grade (TA = −40 to +85°C) RL78/G14 16-bit MCU with 192 KB flash, 20 KB RAM, and 8 KB data flash. It integrates a 32 MHz RL78 CPU core delivering 44 DMIPS, ultra-low-power operation (66 μA/MHz active, 0.60 μA RTC+LVD), 10-bit 16-channel ADC, dual UART/LIN, 8-channel 16-bit TAU timers, and real-time clock with calendar.

For engineers reviewing the R5F104MHAFA#10 datasheet, R5F104MHAFA#10 pinout, R5F104MHAFA#10 application, or R5F104MHAFA#10 equivalent, key selection considerations include its 80-pin LQFP package with 64 I/Os, integrated LIN-capable UARTs for automotive body electronics, low-voltage operation down to 1.6 V, and hardware DTC/ELC for deterministic peripheral event handling without CPU intervention.

Technical Context

The R5F104MHAFA#10 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs min @ 32 MHz). It supports on-chip debug, self-programming with boot swapping, and flash shield window protection.

Its peripheral set includes 8-channel Timer Array Unit (TAU), 12-bit interval timer, RTC with calendar/alarm/correction, 10-bit 16-channel ADC with internal reference and temperature sensor, two 8-bit DAC channels, and up to 10 I²C/Simplified I²C interfaces - all operating across 1.6–5.5 V supply range.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (14 × 14 mm, 0.65 mm pitch), RoHS-compliant, industrial temperature grade (−40 to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104MHGFA#10, the R5F104MHAFA#10 trades extended temperature rating for lower cost and qualification scope; compared with R5F104LHAFA#10, it delivers higher I/O density and full peripheral complement at the expense of board area and thermal mass.

Availability

R5F104MHAFA#10 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance motor drives, and smart energy metering requiring stable component supply across production lifecycles.

Supply support for R5F104MHAFA#10 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 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications demanding high integration and long-term supply assurance.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104MHAFA#10?

The R5F104MHAFA#10 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 44 DMIPS of processing performance. Its RL78 CPU core supports configurable instruction timing, enabling minimum execution time of 0.03125 µs at 32 MHz. The device maintains this performance across its full 1.6–5.5 V supply range and −40 to +85°C ambient temperature.

Does the R5F104MHAFA#10 support LIN bus communication, and how is it implemented?

Yes, the R5F104MHAFA#10 supports LIN bus communication via its UART peripherals. Specifically, UART0, UART1, and UART2 all include LIN-break detection and synchronization capabilities per LIN 2.x specifications. The R5F104MHAFA#10 uses dedicated hardware features such as automatic baud rate adjustment and LIN header detection to reduce CPU load during frame transmission and reception.

What are the power supply requirements and low-power capabilities of the R5F104MHAFA#10?

The R5F104MHAFA#10 operates from a single 1.6–5.5 V supply and achieves 66 μA/MHz active current consumption. In STOP mode with only RTC and LVD active, it draws just 0.60 μA. It supports three low-power states-HALT, STOP, and SNOOZE-with wake-up times as fast as 4 µs from STOP mode. An external 0.47–1 µF capacitor on the REGC pin is required for internal regulator stability.

How many analog-to-digital converter (ADC) channels does the R5F104MHAFA#10 provide, and what are their key specifications?

The R5F104MHAFA#10 integrates a 10-bit successive-approximation ADC with up to 16 analog input channels. It supports an internal 1.45 V reference voltage and includes an on-chip temperature sensor. Conversion is supported across the full 1.6–5.5 V supply range, and the ADC can operate synchronously with timer triggers for precise sampling intervals in motor control or sensor acquisition applications.

Is the R5F104MHAFA#10 pin-compatible with other RL78/G14 family members, and what package options share the same footprint?

No, the R5F104MHAFA#10 is not pin-compatible with other RL78/G14 variants due to its unique 80-pin LQFP (14 × 14 mm, 0.65 mm pitch) package. Within the RL78/G14 family, only the R5F104MGAFA#10, R5F104MJAFA#10, and R5F104MLAFA#10 share this exact package and pinout. Other pin counts (e.g., 64-pin or 48-pin) use physically distinct footprints and require PCB redesign.