Renesas R5F111MFAFB#30

Overview

R5F111MFAFB#30 from Renesas is an 80-pin RL78/L1C 16-bit microcontroller without USB, featuring 96 KB flash, 8 KB data flash, 8 KB RAM, integrated LCD controller/driver (44 segment × 4 common), and a 12-bit A/D converter (12-channel, 2.4–3.6 V range). It operates from 1.6 to 3.6 V, achieves 33 DMIPS at 24 MHz, and targets ultra-low-power LCD-based applications including portable medical devices and industrial control panels.

For engineers reviewing the R5F111MFAFB#30 datasheet, R5F111MFAFB#30 pinout, R5F111MFAFB#30 application, or R5F111MFAFB#30 equivalent, key selection criteria include its 80-pin LFQFP package, absence of USB functionality, LCD drive capability with internal voltage boosting, real-time clock with calendar, and support for HALT/STOP/SNOOZE low-power modes.

Technical Context

The RL78 CPU core implements a CISC architecture with 3-stage pipeline, supporting instruction execution times from 0.04167 μs (24 MHz PLL) to 30.5 μs (32.768 kHz subsystem clock). It includes multiply/divide and multiply-accumulate instructions, 1 Mbyte address space, and four banks of 8-bit general-purpose registers.

Peripheral integration centers on LCD control (capacitor-split and external-resistor division methods), dual 8-bit D/A outputs, two comparators with selectable reference sources, and five serial interfaces - four UART/LIN channels and five I²C-compatible channels - all managed via Event Link Controller (ELC) and Data Transfer Controller (DTC) for autonomous operation.

Key Specifications

Pinout & Package

Package: 80-pin plastic LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, consumer-grade (TA = −40 to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F111MFAFB#30, R5F111MGAFB#30 offers headroom for feature growth within identical footprint and power profile, while R5F110MFAFB#30 trades zero-cost USB integration against slightly higher layout and decoupling demands.

Availability

R5F111MFAFB#30 is available at Aetrix Electronics and suitable for portable medical instrumentation, smart building controls, and industrial panel meters requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for R5F111MFAFB#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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/L1C product line is engineered specifically for ultra-low-power LCD-based human-interface applications, combining integrated display drivers, precision analog peripherals, and sub-μA retention modes to minimize system-level power and component count.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F111MFAFB#30?

The R5F111MFAFB#30 operates up to 24 MHz using its on-chip PLL or high-speed oscillator, delivering 33 DMIPS of processing performance. Its minimum instruction execution time is 0.04167 μs under these conditions, enabling responsive real-time control in LCD-driven systems while maintaining ultra-low power consumption.

Does the R5F111MFAFB#30 support USB functionality?

No, the R5F111MFAFB#30 does not include USB functionality. It belongs to the "111" series variant of the RL78/L1C family, which omits the USB 2.0 function controller, UREGC, UDM, UDP, and UVBUS pins. For USB-capable equivalents, consider the R5F110xxx series such as R5F110MFAFB#30.

How many LCD segments and commons does the R5F111MFAFB#30 support?

The R5F111MFAFB#30 supports up to 44 segment outputs and 4 common outputs in its 80-pin configuration. The segment mapping includes dedicated pins such as SEG0–SEG6, SEG12–SEG25, SEG27–SEG42, and SEG48–SEG55, with COM0–COM3 driven directly from the integrated LCD controller/driver.

What are the key low-power modes supported by the R5F111MFAFB#30?

The R5F111MFAFB#30 supports HALT, STOP, and SNOOZE modes. In STOP mode with RTC2 and LVD enabled, it draws just 0.68 μA-ideal for battery-backed applications requiring calendar-aware wake-up. HALT mode reduces active current to 112.5 μA/MHz, balancing responsiveness and efficiency during periodic sensing.

Can the R5F111MFAFB#30 perform background data flash rewriting?

Yes, the R5F111MFAFB#30 supports Background Operation (BGO) for data flash. While executing code from program memory, it can simultaneously rewrite the 8 KB data flash memory-enabling seamless firmware parameter updates or logging without halting application logic.