Renesas R5F2L388MNFA#V0

Overview

R5F2L388MNFA#V0 from Renesas Electronics is a 16-bit R8C CPU core MCU with 64 KB flash, 8 KB RAM, and integrated LCD controller supporting up to 48 segment/8 common outputs. It features 10-bit × 16-channel ADC, dual 8-bit DACs, hardware LIN, and operates from 1.8–5.5 V at up to 20 MHz - designed for embedded control in consumer audio and office equipment with low EMI/EMS.

For engineers reviewing the R5F2L388MNFA#V0 datasheet, R5F2L388MNFA#V0 pinout, R5F2L388MNFA#V0 application, or R5F2L388MNFA#V0 equivalent, key selection criteria include its 80-pin LQFP (0.65 mm pitch) package, -20°C to +85°C temperature grade, background operation data flash, and real-time clock timer RE for battery-backed timekeeping.

Technical Context

The R5F2L388MNFA#V0 implements the R8C CPU core with 89 fundamental instructions and a 16×16→32-bit hardware multiplier for efficient signal processing. Its memory subsystem includes 64 KB program ROM, 1 KB × 4 data flash with BGO, and 8 KB RAM - enabling firmware updates without halting execution.

Peripheral integration centers on mixed-signal control: Timer RD supports three-phase PWM for motor drive, UART0/1/2 with I²C/LIN modes, and an LCD controller with internal voltage multiplier and bias/duty configuration (1/2–1/4 bias, static–1/4 duty). Power management includes wait/stop/power-off modes with sub-µA current draw.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (PLQP0080JA-A), 12 × 12 mm body, 0.65 mm lead pitch, exposed pad not specified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit MCU applications.

Compared with R5F2L388MNFA#V0, the R5F2L388MDFP#V0 extends temperature range without changing functionality, while R5F2L368MNFA#V0 reduces pin count and peripheral scale - both serve distinct design constraints but lack drop-in compatibility due to package and resource differences.

Availability

R5F2L388MNFA#V0 is available at Aetrix Electronics and suitable for consumer audio interfaces, office equipment UIs, and appliance control panels requiring stable component supply across multi-year production cycles.

Supply support for R5F2L388MNFA#V0 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 R8C/L38M Group targets cost-sensitive, low-power embedded control applications - emphasizing integrated LCD driving, robust EMI performance, and seamless migration from 8-bit platforms.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F2L388MNFA#V0?

The R5F2L388MNFA#V0 operates at up to 20 MHz when supplied with 2.7–5.5 V, and supports reduced-frequency operation down to 5 MHz at 1.8 V. This dual-voltage capability allows flexible power architecture design - including direct connection to 3.3 V or 5 V rails without regulation, and battery operation down to 1.8 V with clock scaling.

Does the R5F2L388MNFA#V0 support background operation (BGO) for data flash writes?

Yes, the R5F2L388MNFA#V0 includes background operation (BGO) for its 1 KB × 4 data flash blocks. This allows firmware or calibration data to be rewritten while the main application continues uninterrupted - essential for field-upgradable devices like audio receivers or smart appliances where UI responsiveness must be maintained during updates.

How many LCD segment and common pins does the R5F2L388MNFA#V0 support, and what bias configurations are available?

The R5F2L388MNFA#V0 supports up to 48 segment outputs and 8 common outputs, with integrated voltage multiplier and dedicated VL1–VL4 pins. It supports 1/2, 1/3, and 1/4 bias configurations and static, 1/2, 1/3, 1/4, and 1/8 duty cycles - enabling direct drive of alphanumeric and graphical LCD panels without external bias generators.

What communication interfaces are integrated into the R5F2L388MNFA#V0?

The R5F2L388MNFA#V0 integrates UART0, UART1, and UART2 (with I²C-bus and multiprocessor modes), a synchronous serial unit (SSU), hardware LIN (using UART0 and Timer RA), and I²C bus functionality shared with SSU. This combination supports display interfaces, sensor networks, legacy appliance buses, and automotive sub-system communication without external transceivers.

Is there a hardware real-time clock (RTC) in the R5F2L388MNFA#V0, and how is it powered during low-power modes?

Yes, Timer RE functions as a hardware real-time clock with seconds/minutes/hours/day-of-week registers. In power-off mode with timer RE enabled, it draws only 1.4 µA at 3.0 V using the 32 kHz XCIN clock - allowing accurate timekeeping for alarm clocks, timers, or data logging timestamps even during extended standby.