Renesas R5F11MPEAFB#50

Overview

R5F11MPEAFB#50 from Renesas is a 100-pin RL78/L1A 16-bit microcontroller with integrated LCD controller/driver (45 segment/8 common), 12-bit A/D and D/A converters (14/2 channels), three operational amplifiers (two with analog MUX), and true low-power operation (0.68 μA in Halt mode). 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 health monitors.

For engineers reviewing the R5F11MPEAFB#50 datasheet, R5F11MPEAFB#50 pinout, R5F11MPEAFB#50 application, or R5F11MPEAFB#50 equivalent, key selection criteria include its integrated LCD drive capability, dual 12-bit DAC outputs with rail-to-rail op-amps, ultra-low power modes (Halt/STOP/Snooze), and 100-pin LFQFP package with full peripheral I/O redirection support.

Technical Context

The R5F11MPEAFB#50 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction execution time (0.04167 μs at 24 MHz or 30.5 μs at 32.768 kHz). It integrates a 12-bit interval timer, Real-Time Clock 2 (99-year calendar, alarm, correction), and Event Link Controller (22 event inputs) for deterministic peripheral triggering without CPU intervention.

Its analog subsystem includes a 14-channel 12-bit A/D converter with internal 1/2 AVDD reference and temperature sensor, two 12-bit D/A channels (0.35 V to AVDD – 0.47 V output), and three op-amps - one general-purpose and two rail-to-rail with configurable analog MUX (4-input per channel) - all supported by programmable voltage reference (1.5/1.8/2.048/2.5 V).

Key Specifications

Pinout & Package

Package: 100-pin plastic LFQFP (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, consumer-grade (−40 to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F11MPFAFB#50, the R5F11MPEAFB#50 offers optimized flash capacity for mid-size applications without over-provisioning; compared with R5F11MMDAFB#50, it delivers higher LCD segment count and analog channel density essential for feature-rich consumer interfaces.

Availability

R5F11MPEAFB#50 is available at Aetrix Electronics and suitable for smart meter displays, portable medical devices, and home appliance control panels requiring stable component supply across extended production lifecycles.

Supply support for R5F11MPEAFB#50 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, and power solutions for automotive, industrial, and IoT markets.

The RL78/L1A product line is engineered for ultra-low-power LCD-based consumer electronics, integrating high-resolution analog peripherals and flexible timing resources into a single die to minimize system-level BOM and power consumption.

FAQ

What is the maximum LCD segment count supported by the R5F11MPEAFB#50?

The R5F11MPEAFB#50 supports up to 45 segment outputs and 8 common outputs when configured for 8-com drive. This is confirmed in the RL78/L1A datasheet Section 1.6, where 100-pin variants (R5F11MPx) list "45 (41)" segment signal outputs - the parenthetical value indicates segment count with 8-com enabled. The R5F11MPEAFB#50 is a 100-pin part and therefore fully supports this configuration.

Does the R5F11MPEAFB#50 include an internal voltage reference usable for both A/D and D/A converters?

Yes, the R5F11MPEAFB#50 provides a programmable internal voltage reference (VREFOUT) with four selectable output levels: 1.5 V, 1.8 V, 2.048 V, and 2.5 V (typical). As stated in Section 1.1 and Section 1.6 of the datasheet, this reference is explicitly designated for use with both the 12-bit A/D and D/A converters, eliminating the need for external reference ICs in most precision analog applications.

What are the low-power operating modes available on the R5F11MPEAFB#50, and what is the lowest current draw?

The R5F11MPEAFB#50 supports HALT, STOP, and SNOOZE modes. Its lowest verified current draw is 0.68 μA in HALT mode with RTC2 and LVD active - specified in the datasheet introduction and confirmed in Section 2.3.1 DC Characteristics. This mode retains RAM content and allows wake-up via RTC alarm or external interrupt, making it ideal for long-duration display retention.

How many operational amplifiers does the R5F11MPEAFB#50 integrate, and what are their key capabilities?

The R5F11MPEAFB#50 integrates three operational amplifiers: one general-purpose (AMP0) and two rail-to-rail types (AMP1 and AMP2) each with a 4-input analog MUX. As documented in Sections 1.1 and 1.6, AMP1 and AMP2 support programmable input selection for sensor multiplexing, enabling single-op-amp reuse across multiple analog channels - a key advantage for compact, multi-sensor designs.

Is the R5F11MPEAFB#50 pin-compatible with other RL78/L1A family members like the R5F11MPFAFB#50?

Yes, the R5F11MPEAFB#50 and R5F11MPFAFB#50 share identical 100-pin LFQFP packaging, pinout, and peripheral mapping - confirmed in Table 1-1 (Ordering Information) and Figures 1-1 and 1-2 of the datasheet. Both parts belong to the same R5F11MPx subfamily and differ only in flash capacity (64 KB vs. 96 KB), making them drop-in replacements for hardware design reuse.