Renesas R5F100MGAFA#V0

Overview

R5F100MGAFA#V0 from Renesas is an RL78/G13 80-pin LQFP-0.65mm microcontroller with 128 KB flash, 8 KB data flash, 12 KB RAM, 32 MHz max CPU speed (41 DMIPS), and ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD mode) for battery-powered industrial control and sensor interface applications.

For engineers reviewing the R5F100MGAFA#V0 datasheet, R5F100MGAFA#V0 pinout, R5F100MGAFA#V0 application, or R5F100MGAFA#V0 equivalent, key selection criteria include integrated RTC with calendar/alarm, 10-bit 26-channel ADC with internal temperature sensor, LIN-capable UARTs, and support for HALT/STOP/SNOOZE low-power modes in a -40°C to +85°C industrial-grade package.

Technical Context

The R5F100MGAFA#V0 implements the RL78 CISC CPU core with 3-stage pipeline, 1 MB address space, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It integrates dual clock domains: high-speed on-chip oscillator (±1.0% accuracy, 1–32 MHz selectable) and dedicated low-speed subsystem clock for RTC and watchdog.

Peripheral integration includes 8× 16-bit timers, 1× real-time clock with 99-year calendar and correction, 1× watchdog timer, 2–4 channel DMA, 3–10 channel I²C/Simplified I²C, 2–4 channel UART/LIN, and 2–8 channel CSI (SPI-compatible serial interface), 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, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100MGAFA#V0, R5F100MGAFB#V0 trades assembly simplicity for compactness, while R5F101MGAFA#V0 removes data flash to lower unit cost - both retain identical real-time performance, power profiles, and peripheral sets for drop-in software compatibility.

Availability

R5F100MGAFA#V0 is available at Aetrix Electronics and suitable for smart energy meters, industrial sensor nodes, and home appliance control systems requiring stable component supply across multi-year production cycles.

Supply support for R5F100MGAFA#V0 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 solutions for industrial, automotive, and IoT markets.

The RL78/G13 product line delivers ultra-low-power, cost-optimized MCUs targeting battery-operated and energy-conscious embedded systems - balancing performance, integration, and power efficiency for general-purpose industrial and consumer applications.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F100MGAFA#V0?

The R5F100MGAFA#V0 operates at up to 32 MHz with a measured performance of 41 DMIPS. This rating is achieved using the high-speed on-chip oscillator, which maintains ±1.0% accuracy across the full industrial temperature range (-40°C to +85°C) and supply voltage (1.8–5.5 V). The RL78 core's 3-stage pipeline and optimized instruction set deliver deterministic timing for real-time control tasks in the R5F100MGAFA#V0.

Does the R5F100MGAFA#V0 support background data flash programming while executing code from main flash memory?

Yes, the R5F100MGAFA#V0 supports Background Operation (BGO) for data flash writes. This allows the CPU to execute instructions from program flash memory concurrently with data flash erase/write operations - eliminating interrupt latency or system stalls during firmware parameter updates. The R5F100MGAFA#V0 guarantees 1,000,000 write/erase cycles for its 8 KB data flash, with operation supported across the full 1.8–5.5 V VDD range.

What low-power modes are available on the R5F100MGAFA#V0, and what is the lowest achievable current consumption?

The R5F100MGAFA#V0 offers HALT, STOP, and SNOOZE low-power modes. In STOP mode with only RTC and LVD active, it achieves 0.57 μA typical current consumption. This mode retains RAM contents, RTC calendar/alarm functionality, and wake-up capability via external interrupts or RTC alarm - making it ideal for long-duration battery applications. The R5F100MGAFA#V0 achieves 66 μA/MHz in active mode, reflecting its true low-power platform architecture.

Can the R5F100MGAFA#V0 interface directly with 1.8 V or 2.5 V logic devices without level-shifting circuitry?

Yes, the R5F100MGAFA#V0 supports different-potential interface operation. Its I/O ports can be configured to interface directly with 1.8 V, 2.5 V, or 3.0 V external logic devices - eliminating the need for discrete level shifters in mixed-voltage systems. This capability is implemented through configurable input thresholds and output drive strength, validated across the full -40°C to +85°C operating range of the R5F100MGAFA#V0.

What is the ADC resolution, channel count, and special analog features integrated into the R5F100MGAFA#V0?

The R5F100MGAFA#V0 integrates a 10-bit successive-approximation ADC with up to 26 analog input channels. It includes an internal 1.45 V reference voltage and a calibrated temperature sensor - both accessible only in HS (high-speed main) mode. These features enable precise ratiometric sensor measurements and on-chip thermal monitoring without external components, directly supporting applications like environmental sensing and thermal management in the R5F100MGAFA#V0.