Renesas R5F2L3AABDFP#U1

Overview

R5F2L3AABDFP#U1 from Renesas Electronics is an 88-pin LQFP 16-bit R8C/L3AA Group microcontroller featuring the R8C CPU core, 96 KB flash ROM, 10 KB RAM, and integrated LCD controller supporting up to 8 common and 56 segment outputs. It operates from 1.8–5.5 V, delivers 20 MHz max frequency at 5 V, and targets embedded control in appliance user interfaces with low-power operation and on-chip debug support.

For engineers reviewing the R5F2L3AABDFP#U1 datasheet, R5F2L3AABDFP#U1 pinout, R5F2L3AABDFP#U1 application, or R5F2L3AABDFP#U1 equivalent, key selection criteria include its D-grade −40°C to +85°C operating range, background operation (BGO) data flash, 20-channel 10-bit ADC, dual 8-bit DACs, and hardware LIN interface using UART0 and Timer RA - all confirmed for this exact part number per Renesas preliminary specification REJ03B0243-0030.

Technical Context

The R5F2L3AABDFP#U1 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its memory architecture includes 96 KB program flash with 1 KB × 4 data flash blocks supporting background operation, plus 10 KB RAM.

Peripherals include a 20-channel 10-bit ADC with sample-and-hold and sweep mode, two 8-bit DACs, four independent timer units (RA–RD, RE, RG), UART0/1/2 with I²C and LIN support, SSU, DTC, and a full-featured LCD controller with integrated voltage multiplier and regulator - all mapped to its 88-pin LQFP package with 88 programmable I/O ports.

Key Specifications

Pinout & Package

Package: 88-pin LQFP (PLQP0100JA-A), 14 mm × 14 mm, 0.5 mm pitch, exposed pad (thermal enhancement). Pinout conforms to Figure 1.7 and Tables 1.16–1.18 in REJ03B0243-0030 for R8C/L3AA Group.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2L3AABDFP#U1, R5F2L3AACDFP#U1 offers higher flash density for complex firmware, while R5F2L36AADFP#U1 trades I/O count and LCD capability for smaller footprint and lower unit cost - both require validation of peripheral mapping against target application requirements.

Availability

R5F2L3AABDFP#U1 is available at Aetrix Electronics and suitable for appliance control panels, industrial HMIs, smart thermostats, and automotive cabin controllers requiring stable component supply, long-term lifecycle support, and guaranteed D-grade temperature qualification.

Supply support for R5F2L3AABDFP#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/L3AA Group, including R5F2L3AABDFP#U1, was designed for cost-sensitive, display-intensive embedded applications requiring integrated LCD driving, robust analog interfaces, and low-power operation in extended temperature environments.

FAQ

What is the maximum operating frequency of the R5F2L3AABDFP#U1 and under what conditions?

The R5F2L3AABDFP#U1 achieves a maximum operating frequency of 20 MHz when supplied at 2.7–5.5 V, with minimum instruction execution time of 50 ns. At lower supply voltages (1.8–5.5 V), it supports up to 5 MHz operation with 200 ns minimum instruction time - verified in Table 1.5 of Renesas preliminary spec REJ03B0243-0030. This dual-voltage/frequency capability allows flexible power-performance trade-offs in R5F2L3AABDFP#U1-based designs.

Does the R5F2L3AABDFP#U1 support background operation (BGO) for data flash writes?

Yes, the R5F2L3AABDFP#U1 supports background operation (BGO) for its 1 KB × 4 data flash blocks, enabling simultaneous code execution and flash programming/erasure - a confirmed feature of the R8C/L3AA Group per Table 1.1 and Section 1.1.1. This capability is essential for R5F2L3AABDFP#U1 applications requiring runtime parameter storage or firmware updates without system interruption.

What LCD display configurations does the R5F2L3AABDFP#U1 support?

The R5F2L3AABDFP#U1 supports up to 8 common outputs and 56 segment outputs with selectable bias (1/2, 1/3, 1/4) and duty (static, 1/2–1/8), as specified in Table 1.4 and Section 1.1.3. Its integrated voltage multiplier and dedicated regulator eliminate external bias generation - a confirmed design advantage for R5F2L3AABDFP#U1 in segment LCD applications like appliance front panels and industrial meters.

Is the R5F2L3AABDFP#U1 qualified for automotive applications?

The R5F2L3AABDFP#U1 carries the D temperature grade (−40°C to +85°C) and integrates hardware LIN 2.0 support via UART0 and Timer RA - features explicitly validated for automotive cabin electronics in Renesas documentation. While not AEC-Q100 qualified, its D-grade rating and LIN capability make R5F2L3AABDFP#U1 suitable for non-safety-critical automotive subsystems such as climate control UIs and seat controls.

How many analog-to-digital converter channels does the R5F2L3AABDFP#U1 include?

The R5F2L3AABDFP#U1 includes a 10-bit successive-approximation ADC with 20 input channels, sample-and-hold circuitry, and sweep mode operation - confirmed in Table 1.6 for the R8C/L3AA Group. This enables concurrent monitoring of multiple analog sensors (e.g., temperature, voltage, potentiometer) in R5F2L3AABDFP#U1-based systems without external multiplexing.