Renesas R5F11MMEAFB#30

Overview

R5F11MMEAFB#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 function. 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 smart meters and portable medical displays.

For engineers reviewing the R5F11MMEAFB#30 datasheet, R5F11MMEAFB#30 pinout, R5F11MMEAFB#30 application, or R5F11MMEAFB#30 equivalent, key selection considerations include its 80-pin LFQFP package, 48 KB flash + 8 KB data flash + 5.5 KB RAM memory configuration, HALT-mode current of 0.68 μA (RTC2 + LVD active), and support for capacitive split/internal boosting LCD drive methods.

Technical Context

The R5F11MMEAFB#30 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction execution time (0.04167 μs @ 24 MHz HOCO to 30.5 μs @ 32.768 kHz subsystem clock). It integrates a 12-bit interval timer, watchdog timer, event link controller (22 event inputs), and data transfer controller activated by 30 interrupt sources.

Its analog subsystem includes three operational amplifiers (two with analog MUX), one comparator, and dedicated AVDD/AVSS rails supporting simultaneous 12-bit ADC and DAC operation. The LCD controller supports switchable drive methods-internal voltage boosting, capacitor split, or external resistance division-with programmable VL1–VL4 power supplies and CAPH/CAPL pins.

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 R5F11MMEAFB#30, R5F11MMFAFB#30 offers +48 KB flash without changing footprint or power profile, while R5F11MPFAFB#30 trades package size for significantly expanded analog and digital I/O - enabling scalable design across product tiers without re-architecting firmware logic.

Availability

R5F11MMEAFB#30 is available at Aetrix Electronics and suitable for smart energy meters, portable medical monitors, home appliance control panels, and industrial thermostats requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F11MMEAFB#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/L1A group is designed specifically for ultra-low-power LCD-based consumer applications, integrating display driving, precision analog, and real-time functions into a single chip to minimize system cost and power.

FAQ

What is the maximum operating frequency and instruction throughput of the R5F11MMEAFB#30?

The R5F11MMEAFB#30 supports a maximum high-speed on-chip oscillator frequency of 24 MHz (±1.0% accuracy), delivering 33 DMIPS performance. Its minimum instruction execution time is 0.04167 μs under this condition. The core also supports lower-frequency operation down to 32.768 kHz for ultra-low-power RTC2 and sleep modes, with corresponding instruction times up to 30.5 μs.

Does the R5F11MMEAFB#30 support external crystal oscillators, and what are the valid frequency ranges?

Yes, the R5F11MMEAFB#30 supports two external crystal inputs: X1/X2 for the main system clock (1–20 MHz, depending on VDD voltage range) and XT1/XT2 for the subsystem clock (32.768 kHz typical). The device boots using the internal high-speed oscillator and can switch to crystal sources after stabilization - verified via the oscillation stabilization time counter (OSTC) register.

How many LCD segments and commons does the R5F11MMEAFB#30 drive, and what drive methods are supported?

The R5F11MMEAFB#30 drives up to 32 segment signals and 4 common signals (or 28 segments × 8 commons in alternate configuration). It supports three LCD drive methods: internal voltage boosting, capacitor split, and external resistance division - selected via control registers to match display glass requirements without external bias ICs.

What analog peripherals are integrated into the R5F11MMEAFB#30, and what are their key specifications?

The R5F11MMEAFB#30 integrates a 10-channel 12-bit A/D converter (with internal 1/2 AVDD reference option), two 12-bit D/A converters (output range: 0.35 V to AVDD – 0.47 V), three operational amplifiers (two with analog MUX), one comparator, and a selectable voltage reference (1.5/1.8/2.048/2.5 V). All analog functions share dedicated AVDD/AVSS rails and operate across the full 1.8–3.6 V supply range.

What power-saving modes does the R5F11MMEAFB#30 offer, and what is the lowest achievable current draw?

The R5F11MMEAFB#30 offers HALT, STOP, and SNOOZE modes. In HALT mode with RTC2 and low-voltage detector (LVD) active, it draws just 0.68 μA - verified at TA = −40 to +85°C and VDD = 1.8–3.6 V. STOP mode consumes 0.94 μA, and SNOOZE enables selective peripheral operation while keeping CPU halted for event-driven wake-up with minimal latency.