Renesas R5F2L387ANFP#U1

Overview

R5F2L387ANFP#U1 from Renesas Electronics is an 8-bit R8C/L38A Group microcontroller featuring the R8C CPU core, 48 KB program ROM, 1 KB × 4 data flash with background operation (BGO), 6 KB RAM, and 68 programmable CMOS I/O ports. It integrates a 10-bit ADC (16 channels), LCD controller (up to 8 common / 48 segment outputs), dual UARTs, I²C, LIN, and multiple timers including PWM-capable Timer RD and real-time clock Timer RE. It targets embedded control in consumer appliances with integrated display interfaces.

For engineers reviewing the R5F2L387ANFP#U1 datasheet, R5F2L387ANFP#U1 pinout, R5F2L387ANFP#U1 application, or R5F2L387ANFP#U1 equivalent, key selection criteria include its -20°C to +85°C operating temperature (N version), LQFP-80 package, data flash BGO support, LCD bias/duty flexibility (1/2, 1/3, 1/4; static to 1/8), and integrated LIN physical layer timing via UART0 + Timer RA.

Technical Context

The R5F2L387ANFP#U1 implements the R8C CPU core with 89 fundamental instructions and supports single-chip mode across a 1 Mbyte address space. Its clock system includes four independent sources: XIN (up to 20 MHz), XCIN (32 kHz), high-speed on-chip oscillator (frequency-adjustable), and low-speed on-chip oscillator - all selectable for system and peripheral clocks with configurable division ratios (1, 2, 4, 8, 16).

Peripheral integration centers on mixed-signal control: Timer RD provides three-phase complementary PWM (6-pin output) and reset-synchronous PWM for motor drive; Timer RC and RG support capture/compare and single-pin PWM; the 16-channel 10-bit ADC includes sample-and-hold and sweep mode; and the LCD controller embeds voltage multiplier and regulator for direct segment/common drive without external components.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (PLQP0080JA-A), 12 × 12 mm body, 0.5 mm pitch, exposed pad not specified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2L387ANFP#U1, the R5F2L388ANFP#U1 and R5F2L38AANFP#U1 offer increased program ROM (64 KB and 96 KB) while preserving identical I/O count, LCD capability, ADC channel count, and low-power modes - enabling seamless firmware scalability without PCB or driver changes.

Availability

R5F2L387ANFP#U1 is available at Aetrix Electronics and suitable for microwave oven control panels, refrigerator display hubs, and air conditioner remote interfaces requiring stable component supply and long-term industrial availability.

Supply support for R5F2L387ANFP#U1 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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The R8C/L38A Group, including R5F2L387ANFP#U1, was designed for cost-sensitive, display-integrated consumer appliances requiring robust mixed-signal control, low-power operation, and integrated LCD driving capability.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F2L387ANFP#U1?

The R5F2L387ANFP#U1 supports a maximum operating frequency of 20 MHz when supplied at 2.7–5.5 V, and operates down to 5 MHz at 1.8–5.5 V. This dual-voltage/frequency capability allows flexible power management - for example, running at 20 MHz during active UI updates and scaling down to 5 MHz in low-power sensor polling phases while maintaining full functionality across the 1.8–5.5 V range.

Does the R5F2L387ANFP#U1 include on-chip debug and flash programming support?

Yes, the R5F2L387ANFP#U1 includes on-chip debug capability and on-board flash rewrite function. These features enable in-system programming and real-time debugging without external emulators. The device supports ROM code protection and ID code check to safeguard firmware intellectual property during development and deployment.

How many LCD segment and common outputs does the R5F2L387ANFP#U1 support, and what bias options are available?

The R5F2L387ANFP#U1 supports up to 48 segment outputs and 8 common outputs, configured via dedicated LCD pins (e.g., P00–P07, P20–P23, P70–P73). It offers selectable bias (1/2, 1/3, 1/4) and duty (static, 1/2, 1/3, 1/4, 1/8) settings, with an integrated voltage multiplier and regulator eliminating the need for external bias circuitry - reducing BOM count and layout complexity.

What low-power modes are available on the R5F2L387ANFP#U1, and what are their typical current draws?

The R5F2L387ANFP#U1 offers wait mode (3.5 µA at 3.0 V, 32 kHz), stop mode (2 µA), and power-off mode (1 µA with Timer RE enabled, 0.02 µA with Timer RE disabled). These modes leverage the 32.768 kHz XCIN clock and dedicated low-speed oscillators to maintain RTC accuracy and fast wake-up response while minimizing energy consumption in battery-powered or standby applications.

Is the R5F2L387ANFP#U1 pin-compatible with other members of the R8C/L38A Group?

Yes, all R8C/L38A Group devices, including R5F2L387ANFP#U1, R5F2L388ANFP#U1, and R5F2L38AANFP#U1, share identical 80-pin LQFP packaging (PLQP0080JA-A) and pin-to-pin compatible I/O mapping. Firmware and hardware designs can scale across ROM sizes without layout revision - only program memory capacity differs between variants.