Renesas R5F101MLAFB#30

Overview

R5F101MLAFB#30 from Renesas is an RL78/G13 80-pin, 5V-tolerant 16-bit microcontroller with 128 KB flash, 12 KB RAM, and no data flash memory, designed for low-power industrial control applications operating from −40°C to +105°C. It delivers 41 DMIPS at 32 MHz, features a real-time clock with calendar function, 10-bit ADC (26 channels), and integrated UART/I²C/CSI serial interfaces.

For engineers reviewing the R5F101MLAFB#30 datasheet, R5F101MLAFB#30 pinout, R5F101MLAFB#30 application, or R5F101MLAFB#30 equivalent, key selection criteria include its LFQFP-80 (12 × 12 mm, 0.5-mm pitch) package, industrial-grade temperature range (−40°C to +105°C), absence of on-chip data flash, and support for HALT/STOP/SNOOZE ultra-low-power modes.

Technical Context

The R5F101MLAFB#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 RTC mode). Its memory map includes 1 MB address space, 128 KB code flash organized in 1 KB blocks, and 12 KB on-chip RAM.

Power management integrates a POR circuit, 14-level LVD with interrupt/reset options, and multiple low-power modes - HALT (66 μA/MHz), STOP (0.57 μA with RTC+LVD active), and SNOOZE - enabling energy-sensitive designs. Peripheral integration includes 16× 16-bit timers, 1× 12-bit interval timer, 1× real-time clock with alarm/calendar, and 1× watchdog timer.

Key Specifications

Pinout & Package

Package: LFQFP-80 (12 × 12 mm, 0.5-mm pitch), lead-free, RoHS-compliant, industrial-grade thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100MLAFB#30, the R5F101MLAFB#30 trades data flash and RAM capacity for lower cost and reduced power in static memory subsystems; versus RL78/G14 R5F11MLGFB#30, it offers proven stability and lower gate count for cost-sensitive industrial controls without USB.

Availability

R5F101MLAFB#30 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, HMI panels, and PLC I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F101MLAFB#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 targets cost-sensitive, ultra-low-power general-purpose applications, emphasizing energy efficiency, integrated peripherals, and industrial-grade reliability without sacrificing code density or debug capability.

FAQ

What is the maximum operating frequency and performance of the R5F101MLAFB#30?

The R5F101MLAFB#30 operates at up to 32 MHz with a peak performance of 41 DMIPS. Its RL78 CPU core achieves this using a 3-stage pipeline and high-speed on-chip oscillator with ±1.0% accuracy across 1.8–5.5 V and −40°C to +105°C. Instruction execution time scales dynamically from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz), enabling both high-throughput and ultra-low-power operation within the same R5F101MLAFB#30 device.

Does the R5F101MLAFB#30 include data flash memory?

No, the R5F101MLAFB#30 does not include on-chip data flash memory. This distinguishes it from the R5F100xxx series (e.g., R5F100MLAFB#30), which provides 8 KB of data flash. The R5F101MLAFB#30 retains 128 KB of code flash and 12 KB of RAM but omits data flash to reduce cost and power consumption in applications that store configuration or calibration data externally or in volatile RAM with backup.

What package type and pin count does the R5F101MLAFB#30 use?

The R5F101MLAFB#30 uses an 80-pin LFQFP package (12 × 12 mm, 0.5-mm pitch), designated by the "FB" suffix in the part number. This package is lead-free and RoHS-compliant, rated for industrial temperature operation (−40°C to +105°C), and compatible with standard surface-mount reflow processes. Pin compatibility is maintained across the RL78/G13 80-pin variants, including both R5F100xxx and R5F101xxx families.

How does the R5F101MLAFB#30 support low-power design?

The R5F101MLAFB#30 supports low-power design through three dedicated modes: HALT (66 μA/MHz), STOP (0.57 μA with RTC + LVD active), and SNOOZE (peripheral-triggered wake-up while CPU sleeps). Its 1.6–5.5 V operation, 32.768 kHz RTC with calendar/alarm, and voltage detector with 14 selectable thresholds allow precise power budgeting. These features make the R5F101MLAFB#30 ideal for battery-backed systems where runtime and wake-up latency are critical.

Which serial communication interfaces are available on the R5F101MLAFB#30?

The R5F101MLAFB#30 integrates UART/LIN (up to 4 channels), I²C/Simplified I²C (up to 10 channels), and CSI (SPI-compatible, up to 8 channels), all multiplexed onto shared GPIO pins. Each interface supports independent clock sources and configurable baud rates. For example, UART0 can operate simultaneously with I²C0 and CSI0, enabling concurrent communication with motor drivers, environmental sensors, and display controllers - all managed within a single R5F101MLAFB#30 MCU.