Renesas R5F11MMFAFB#30

Overview

R5F11MMFAFB#30 from Renesas is an ultra-low-power 16-bit RL78/L1A microcontroller with integrated LCD controller/driver (32 segment × 4 common), 12-bit A/D and D/A converters (10-channel ADC, 2-channel DAC), rail-to-rail operational amplifiers (3 channels), internal voltage reference (1.5/1.8/2.048/2.5 V), and real-time clock 2 (RTC2) with calendar and alarm. It operates from 1.8 V to 3.6 V, delivers 33 DMIPS at 24 MHz, and targets battery-powered LCD-based consumer devices such as digital thermostats, portable medical monitors, and smart meters.

For engineers reviewing the R5F11MMFAFB#30 datasheet, R5F11MMFAFB#30 pinout, R5F11MMFAFB#30 application, or R5F11MMFAFB#30 equivalent, key selection criteria include its 80-pin LFQFP package, 96 KB flash / 5.5 KB RAM / 8 KB data flash, HALT-mode current of 0.68 μA (RTC2 + LVD active), and support for capacitor-split LCD driving - critical for low-cost, long-life display instrumentation.

Technical Context

The R5F11MMFAFB#30 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction execution time (0.04167 μs @ 24 MHz to 30.5 μs @ 32.768 kHz). Its system clock supports high-speed on-chip oscillator (1–24 MHz, ±1.0% accuracy), external crystal (1–20 MHz), and subsystem clock (32.768 kHz).

Peripheral integration centers on mixed-signal capability: dual 12-bit converters share AVDD/AVSS rails and internal reference; three op-amps include two with analog MUX switching; LCD driver supports internal boosting, capacitor split, or external resistor division; and event link controller (ELC) enables hardware-triggered peripheral chaining without CPU intervention.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F11MPFAFB#30, the R5F11MMFAFB#30 saves board space and cost with its 80-pin footprint and optimized 96 KB flash, while matching all analog and LCD features needed for mid-tier consumer instrumentation; versus R5F11MMEAFB#30, it provides 32 KB extra flash for future firmware expansion without changing layout.

Availability

R5F11MMFAFB#30 is available at Aetrix Electronics and suitable for digital thermostats, portable medical monitors, and smart energy meter display modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F11MMFAFB#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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.

The RL78/L1A product line is engineered specifically for ultra-low-power LCD-based consumer electronics, integrating mixed-signal peripherals and energy-efficient architecture to minimize bill-of-materials and extend battery life.

FAQ

What is the maximum operating frequency and associated current consumption of the R5F11MMFAFB#30?

The R5F11MMFAFB#30 achieves 24 MHz operation using its high-speed on-chip oscillator with ±1.0% accuracy across −20°C to +85°C. At this frequency and 3.3 V supply, typical active current is 70.8 μA/MHz, resulting in ~1.7 mA total. In HALT mode with RTC2 and LVD active, current drops to 0.68 μA - verified per Renesas datasheet R01DS0280EJ0130 Rev.1.30, Section 1.1.

Does the R5F11MMFAFB#30 support capacitor-split LCD driving, and what external components are required?

Yes, the R5F11MMFAFB#30 supports capacitor-split LCD driving as confirmed in Section 1.1 (Features) and Figure 1.3.1 (Pin Configuration). It requires two external capacitors: CAPH and CAPL (0.47 μF ±30%), connected between designated pins and VSS. No external resistors or bias ICs are needed, enabling compact, low-power display implementation.

How many analog input channels does the R5F11MMFAFB#30 ADC support, and are internal references available?

The R5F11MMFAFB#30 integrates a 12-bit A/D converter with 10 analog input channels (ANI00–ANI09), as specified in Section 1.6 (Outline of Functions) and Table 1.6. It includes an internal reference voltage (TYP. 1.45 V) and supports 1/2 AVDD reference selection - both usable without external components, simplifying sensor interface design.

What is the data flash endurance and programming voltage range for the R5F11MMFAFB#30?

The R5F11MMFAFB#30 provides 8 KB of data flash memory rated for 1,000,000 write/erase cycles (TYP.), with background operation (BGO) enabling concurrent code execution. Programming voltage is identical to VDD: 1.8 V to 3.6 V - no auxiliary voltage rail required. This is documented in Section 1.1 (Features) and Section 1.6 of the datasheet.

Can the R5F11MMFAFB#30 operate from a single 1.8 V supply, and what peripherals remain functional at that voltage?

Yes, the R5F11MMFAFB#30 operates across 1.8 V to 3.6 V. At 1.8 V, the high-speed on-chip oscillator runs up to 8 MHz (Section 2.2.2), all 10 ADC channels function with internal reference, LCD driver supports capacitor-split mode, and RTC2 remains active in HALT mode. Full 24 MHz operation requires ≥2.7 V per electrical specifications in Section 2.2.2.