Renesas R5F101MLAFA#30

Overview

R5F101MLAFA#30 from Renesas is an RL78/G13 80-pin LQFP-0.65mm microcontroller with no data flash, 128 KB code flash, 12 KB RAM, and industrial-grade operation (−40°C to +85°C). It delivers 41 DMIPS at 32 MHz, features ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD), and integrates 16-bit timers, 10-bit ADC (26 channels), UART/LIN, I²C, CSI, RTC, and DMA for embedded control in resource-constrained systems.

For engineers reviewing the R5F101MLAFA#30 datasheet, R5F101MLAFA#30 pinout, R5F101MLAFA#30 application, or R5F101MLAFA#30 equivalent, key selection criteria include its 80-pin LQFP package, absence of on-chip data flash, industrial temperature rating, real-time clock with calendar function, and support for background data flash programming via external memory management.

Technical Context

The R5F101MLAFA#30 implements the RL78 CPU core with a 3-stage CISC 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 architecture separates 128 KB code flash (1 KB blocks) from 12 KB SRAM, with no integrated data flash-requiring external nonvolatile storage for parameter retention.

Peripheral integration includes eight 16-bit timers, one 12-bit interval timer, one real-time clock with alarm/calendar, one watchdog timer, and three serial interfaces (CSI, UART/LIN, I²C) configurable across up to 10 total channels. The 10-bit ADC supports 26 analog inputs with internal 1.45 V reference and temperature sensor.

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 R5F100MLAFA#30 and R5F101PLAFA#30, the R5F101MLAFA#30 offers optimal balance of I/O count, memory, and cost for mid-tier industrial controllers where data flash is unnecessary and pin count must be constrained to 80.

Availability

R5F101MLAFA#30 is available at Aetrix Electronics and suitable for smart energy meters, industrial PLC I/O modules, and home appliance control boards requiring stable component supply, long-term lifecycle support, and industrial temperature qualification.

Supply support for R5F101MLAFA#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 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications - emphasizing energy efficiency, integrated peripherals, and simplified development for industrial controls and consumer appliances.

FAQ

What is the maximum operating frequency of the R5F101MLAFA#30?

The R5F101MLAFA#30 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. This frequency is fully supported across the rated industrial temperature range (−40°C to +85°C) and supply voltage (1.6 V to 5.5 V), with oscillator accuracy maintained at ±1.0% under those conditions. The R5F101MLAFA#30 also supports lower-frequency clock sources including a 32.768 kHz subsystem oscillator for RTC and ultra-low-power operation.

Does the R5F101MLAFA#30 include on-chip data flash memory?

No, the R5F101MLAFA#30 does not include on-chip data flash memory. As indicated by the "101" prefix in its part number (per Renesas RL78/G13 naming convention), this variant provides 128 KB of code flash and 12 KB of RAM but omits the dedicated data flash block. Applications requiring nonvolatile parameter storage must implement external EEPROM, FRAM, or utilize code flash sectors with wear-leveling firmware - a design choice that reduces cost and die size versus the R5F100MLAFA#30, which includes 8 KB of data flash.

What package type and pin count does the R5F101MLAFA#30 use?

The R5F101MLAFA#30 uses an 80-pin LQFP package with 0.65-mm pitch (RENESAS code PLQP0080JB-E), measuring 14 mm × 14 mm. This package is lead-free, RoHS-compliant, and rated for moisture sensitivity level 3. The #30 suffix denotes tray packaging. Pin compatibility is maintained across all RL78/G13 80-pin LQFP variants, including both "100" (with data flash) and "101" (without data flash) series, enabling layout reuse when migrating between memory configurations.

Which serial communication interfaces are available on the R5F101MLAFA#30?

The R5F101MLAFA#30 integrates three serial interface types: CSI (Simplified SPI) with up to 8 channels, UART/LIN with up to 4 channels (supporting LIN 2.2 protocol), and I²C/Simplified I²C with up to 10 channels. These are multiplexed across GPIO pins and configurable via peripheral enable registers and pin function control registers. Notably, P10 and P11 support SCK00/SCL00 and SI00/RxD0/SDA00 respectively - enabling shared use of pins for SPI, I²C, or UART depending on system requirements.

What low-power modes does the R5F101MLAFA#30 support, and what is its lowest current draw?

The R5F101MLAFA#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 draws just 0.57 μA at VDD = 3.0 V and TA = 25°C - verified per the R01DS0131EJ0380 datasheet. This enables multi-year battery operation in maintenance-free sensor nodes. Wake-up from STOP mode occurs in under 10 μs via external interrupt or RTC alarm, preserving system responsiveness without sacrificing energy efficiency. The R5F101MLAFA#30 achieves 66 μA/MHz in active mode, reinforcing its suitability for always-on industrial edge devices.