Renesas R5F2L3A8CDFP#31

Overview

R5F2L3A8CDFP#31 from Renesas Electronics is a 16-bit R8C/L3AC Group microcontroller featuring an R8C CPU core, 64 KB flash program memory, 1 KB × 4 data flash with background operation (BGO), 8 KB RAM, and integrated LCD drive control supporting up to 8 common and 56 segment outputs. It operates from 1.8–5.5 V, delivers 20 MHz max frequency at 5.0 V, and targets embedded control in appliances with integrated display interfaces.

For engineers reviewing the R5F2L3A8CDFP#31 datasheet, R5F2L3A8CDFP#31 pinout, R5F2L3A8CDFP#31 application, or R5F2L3A8CDFP#31 equivalent, key selection criteria include its 100-pin LQFP package, -40°C to +85°C industrial temperature grade, 20-channel 10-bit ADC, dual 8-bit DACs, hardware LIN module, and real-time clock (timer RE) for timekeeping in resource-constrained UI systems.

Technical Context

The R5F2L3A8CDFP#31 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its system clock generation includes four independent circuits: XIN (up to 20 MHz), XCIN (32 kHz), high-speed on-chip oscillator (frequency-adjustable), and low-speed on-chip oscillator - enabling flexible power-mode transitions between standard, wait, stop, and power-off modes.

Peripheral integration centers on mixed-signal timing and interface functions: Timer RD provides three-phase PWM with complementary output (6 pins), Timer RG supports phase counting and single-output PWM, UART0/1/2 offer serial communication with I²C-bus mode and LIN protocol support (using timer RA and UART0), while the DTC enables autonomous data transfers from 38 activation sources without CPU intervention.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PLQP0100KB-A, 0.50 mm pitch), RoHS-compliant, surface-mount.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2L3A8CNFP#30, the R5F2L3A8CDFP#31 adds industrial temperature tolerance without altering functionality; compared with R5F2L3ACDFP#31, it reduces flash size by 64 KB while preserving all I/O, timers, ADC, and LCD capabilities - optimizing cost for fixed-feature appliances.

Availability

R5F2L3A8CDFP#31 is available at Aetrix Electronics and suitable for refrigerator control panels, industrial HMI display units, smart microwave oven UIs, commercial coffee machine interfaces, and other embedded systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F2L3A8CDFP#31 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/L3AC Group is designed for cost-sensitive, display-integrated embedded control applications - emphasizing integrated LCD drivers, low-power operation, and robust peripheral sets for appliance and industrial HMI use cases.

FAQ

What is the maximum operating frequency of the R5F2L3A8CDFP#31?

The R5F2L3A8CDFP#31 supports a maximum operating frequency of 20 MHz when powered at 2.7–5.5 V, with minimum instruction execution time of 50 ns. At lower supply voltages (1.8–5.5 V), the maximum frequency is reduced to 5 MHz for guaranteed operation - verified in the R01DS0095EJ0101 datasheet Section 1.4.

Does the R5F2L3A8CDFP#31 support hardware LIN communication?

Yes, the R5F2L3A8CDFP#31 integrates a dedicated hardware LIN module compliant with LIN 2.0/2.1 standards. It uses timer RA and UART0 resources internally - eliminating software protocol stack overhead and ensuring deterministic timing for automotive body electronics and appliance sub-networks.

How many ADC channels does the R5F2L3A8CDFP#31 provide, and what is their resolution?

The R5F2L3A8CDFP#31 features a 10-bit successive-approximation ADC with 20 input channels (AN0–AN19), including sample-and-hold and hardware sweep mode. This enables simultaneous monitoring of multiple sensors - such as temperature, voltage, and current - without external multiplexing circuitry.

What LCD configuration is supported by the R5F2L3A8CDFP#31?

The R5F2L3A8CDFP#31 supports up to 8 common (COM0–COM7) and 56 segment (SEG0–SEG55) outputs, with integrated voltage multiplier and bias regulator. It supports static, 1/2, 1/3, 1/4, and 1/8 duty drive methods - enabling direct interface to alphanumeric and custom segment displays without external LCD controllers.

Is background operation (BGO) available for data flash on the R5F2L3A8CDFP#31?

Yes, the R5F2L3A8CDFP#31 supports background operation (BGO) for its 1 KB × 4 data flash blocks. This allows firmware to execute application code while erasing or programming data flash - critical for logging, parameter storage, and over-the-air update resilience in uninterrupted operation scenarios.