Renesas R5F101MKDFB#30

Overview

R5F101MKDFB#30 from Renesas is a 32-bit RL78/G13 microcontroller with 256 KB flash memory, 8 KB data flash, and 20 KB RAM, operating at up to 32 MHz with 41 DMIPS performance. It features ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), 16-bit A/D converter (10-bit resolution, 26 channels), real-time clock, and multiple serial interfaces (UART, I²C, CSI) for industrial control and sensor node applications.

For engineers reviewing the R5F101MKDFB#30 datasheet, R5F101MKDFB#30 pinout, R5F101MKDFB#30 application, or R5F101MKDFB#30 equivalent, key selection criteria include its LFQFP-80 package, industrial-grade temperature range (−40°C to +105°C), integrated data flash with background operation, and support for SNOOZE/STOP/HALT low-power modes in resource-constrained embedded designs.

Technical Context

The R5F101MKDFB#30 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). Its memory subsystem includes 256 KB code flash (1 KB block size), 8 KB data flash with 1M rewrite cycles, and 20 KB on-chip RAM.

Peripheral integration includes 16-channel 16-bit timers, 12-bit interval timer, calendar-based real-time clock with alarm and correction, watchdog timer, DMA controller (4 channels), and multi-protocol serial interfaces - all optimized for deterministic timing and low-energy operation in battery-powered and thermally constrained systems.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP (12 × 12 mm, 0.5-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 R5F101MKDFB#30, R5F101MLDFB#30 offers scalable memory headroom for feature-rich firmware, while R5F100MKDFB#30 provides essential data retention without requiring external non-volatile storage - both maintain identical low-power behavior, peripheral compatibility, and industrial temperature support.

Availability

R5F101MKDFB#30 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and building automation panels requiring stable component supply across extended product lifecycles.

Supply support for R5F101MKDFB#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 family delivers true low-power embedded control with integrated peripherals and memory - designed specifically for cost-sensitive, energy-constrained industrial and consumer applications demanding long service life and robust operation.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F101MKDFB#30?

The R5F101MKDFB#30 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Its RL78 CPU core achieves a minimum instruction execution time of 0.03125 μs in this mode, while also supporting ultra-low-speed operation down to 32.768 kHz for RTC and LVD-only functions. This dual-speed capability allows dynamic clock scaling to balance performance and power in the R5F101MKDFB#30.

Does the R5F101MKDFB#30 include data flash memory, and what are its key characteristics?

No, the R5F101MKDFB#30 does not include data flash memory - it belongs to the "101" series variant where data flash is omitted. In contrast, the "100" series (e.g., R5F100MKDFB#30) includes 8 KB of data flash with background operation (BGO), 1,000,000 write cycles, and VDD = 1.8–5.5 V programming voltage. The R5F101MKDFB#30 relies on external non-volatile storage or code flash partitioning for persistent data, preserving die area for enhanced code density.

What package type and pin count does the R5F101MKDFB#30 use, and is it RoHS compliant?

The R5F101MKDFB#30 uses an 80-pin LFQFP (Low-profile Fine-pitch Quad Flat Package) with 0.5-mm pitch and 12 × 12 mm body size. It is RoHS-compliant and rated for moisture sensitivity level 3 (MSL3). The "FB" suffix in the part number explicitly denotes the LFQFP package, and the "#30" indicates tray packaging per Renesas ordering conventions.

What low-power modes are supported by the R5F101MKDFB#30, and what is the lowest achievable current draw?

The R5F101MKDFB#30 supports HALT, STOP, and SNOOZE low-power modes. In STOP mode with only the real-time clock (RTC) and low-voltage detector (LVD) active, it achieves 0.57 μA typical current draw at VDD = 3.0 V and TA = 25°C. This ultra-low quiescent current enables decade-long battery operation in metering and sensor applications, with wake-up sources including RTC alarm, external interrupts, and serial interface activity.

How many analog input channels and what A/D resolution does the R5F101MKDFB#30 provide?

The R5F101MKDFB#30 integrates an 8/10-bit resolution successive approximation A/D converter with up to 26 analog input channels. It operates across the full supply range (VDD = 1.6–5.5 V) and includes an internal 1.45 V reference voltage and factory-calibrated temperature sensor. Channel selection and conversion triggering can be controlled via software or hardware events (e.g., timer match, serial reception), enabling precise sensor interfacing in the R5F101MKDFB#30.