Renesas R5F2L368ANFP#U1

Overview

R5F2L368ANFP#U1 from Renesas Electronics is a 16-bit R8C/L36A Group microcontroller featuring 64 KB flash program ROM, 1 KB × 4 data flash with background operation (BGO), 8 KB RAM, and integrated LCD controller supporting up to 8 common/32 segment outputs. It operates at up to 20 MHz (V_CC = 2.7–5.5 V) and targets embedded control in appliance user interfaces requiring low-power operation, real-time clock, and analog sensing.

For engineers reviewing the R5F2L368ANFP#U1 datasheet, R5F2L368ANFP#U1 pinout, R5F2L368ANFP#U1 application, or R5F2L368ANFP#U1 equivalent, key selection criteria include its 64-pin LQFP package, 52 programmable I/O pins (including 8 high-current drive ports), 10-bit 10-channel ADC, dual UART + I²C + LIN interface, and -20°C to +85°C industrial temperature grade.

Technical Context

The R5F2L368ANFP#U1 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit hardware multiplier, and 1 Mbyte address space. It integrates four clock sources: XIN oscillator (up to 20 MHz), 32 kHz XCIN, high-speed on-chip oscillator (with frequency adjustment), and low-speed on-chip oscillator - enabling flexible power-mode management including wait, stop, and power-off modes with sub-µA current draw.

Peripheral integration includes Timer RA/RB/RC/RD/RE/RG (supporting PWM, input capture, real-time clock), DTC for autonomous data transfer, 2× UART, I²C-bus, LIN bus (using Timer RA and UART0), 10-bit 10-channel ADC with sweep mode, 2× 8-bit DAC, dual comparators, and dedicated LCD voltage multiplier/regulator for static/1/2/1/3/1/4 duty bias driving.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (PLQP0064KB-A), 10 mm × 10 mm, 0.5 mm pitch, exposed pad (thermal enhancement).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2L368ANFP#U1, the R5F2L368ADFP#U1 extends temperature range without altering power or interface behavior, while R5F2L36AANFP#U1 increases memory headroom for feature-rich firmware - both retain identical pinout, clocking, and peripheral configuration.

Availability

R5F2L368ANFP#U1 is available at Aetrix Electronics and suitable for appliance control panels, industrial HMIs, smart thermostats, and POS terminal keypads requiring stable component supply across production lifecycles.

Supply support for R5F2L368ANFP#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 industrial, automotive, and consumer markets.

The R8C/L36A Group, including R5F2L368ANFP#U1, was designed for cost-sensitive, low-power embedded control applications with integrated LCD driving and human-interface functionality in appliances and industrial equipment.

FAQ

What is the maximum operating frequency of the R5F2L368ANFP#U1 and under what conditions?

The R5F2L368ANFP#U1 supports a maximum operating frequency of 20 MHz when powered at V_CC = 2.7–5.5 V using the XIN oscillator. At lower supply voltages (1.8–5.5 V), the maximum frequency is reduced to 5 MHz. The high-speed on-chip oscillator also supports adjustable frequencies up to 20 MHz with internal calibration.

Does the R5F2L368ANFP#U1 include on-chip debug capability?

Yes, the R5F2L368ANFP#U1 includes full on-chip debug functionality via the single-wire debug interface, enabling real-time program execution control, breakpoint setting, and memory/register inspection without requiring external emulators - essential for rapid firmware development and validation.

How many LCD segment and common outputs does the R5F2L368ANFP#U1 support?

The R5F2L368ANFP#U1 supports up to 32 segment outputs and 8 common outputs, consistent with the R8C/L36A Group specification. This enables driving alphanumeric or custom-segment LCDs up to 256 segments (8 × 32) with built-in bias generation and duty-cycle flexibility (static, 1/2, 1/3, 1/4, 1/8).

What is the purpose of the Background Operation (BGO) function in the R5F2L368ANFP#U1?

The Background Operation (BGO) function allows the R5F2L368ANFP#U1 to execute program code from flash memory while simultaneously erasing or programming data flash blocks. This enables non-disruptive firmware updates, parameter storage during runtime, and robust data logging without halting system operation.

Which communication interfaces are integrated into the R5F2L368ANFP#U1?

The R5F2L368ANFP#U1 integrates UART0 and UART1 (clock-synchronous serial I/O/UART), UART2 with I²C-bus mode and multiprocessor communication, a dedicated hardware LIN module (using UART0 and Timer RA), and a synchronous serial communication unit (SSU) shared with I²C - providing comprehensive wired interface coverage for industrial and appliance connectivity.