Renesas R5F2L38ACDFA#V0

Overview

R5F2L38ACDFA#V0 from Renesas is an 88-pin LQFP MCU in the R8C/L38C Group featuring the R8C CPU core, 96 KB program flash, 10 KB RAM, and integrated LCD driver supporting up to 48 segment outputs and 8 common outputs. It delivers 10-bit A/D conversion across 16 channels, dual 8-bit D/A converters, and operates from 1.8–5.5 V with typical current draw of 3.6 mA at 10 MHz/3.0 V - suited for feature-rich consumer appliance control panels.

For engineers reviewing the R5F2L38ACDFA#V0 datasheet, R5F2L38ACDFA#V0 pinout, R5F2L38ACDFA#V0 application, or R5F2L38ACDFA#V0 equivalent, key selection criteria include its 16-channel ADC resolution, LCD bias/duty flexibility (1/2–1/4 bias, static–1/4 duty), background operation (BGO) data flash capability, and hardware LIN support via UART0 and Timer RA.

Technical Context

The R5F2L38ACDFA#V0 implements the R8C CPU core with 89 fundamental instructions and a 16×16→32-bit multiplier, enabling efficient signal processing in resource-constrained embedded systems. Its clock system integrates four independent sources: XIN oscillator (up to 20 MHz), XCIN 32-kHz crystal circuit, high-speed on-chip oscillator (frequency-adjustable), and low-speed on-chip oscillator - all selectable via software-controlled frequency dividers (1/2/4/8/16).

Peripheral integration includes Timer RD (16-bit ×2 with 6-pin PWM, complementary/sawtooth modulation), Timer RG (16-bit phase-counting/PWM), and a Data Transfer Controller (DTC) with 38 activation sources and repeat/normal transfer modes - enabling autonomous sensor data acquisition and display refresh without CPU intervention.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (PLQP0080JA-A, 0.65 mm pitch), RoHS-compliant, surface-mount.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2L38ACDFA#V0, R5F2L38ACDFP offers identical electrical performance in a denser package requiring tighter layout tolerances, while R5F2L36ACDFA trades I/O count, ADC channels, and LCD capacity for lower unit cost and smaller board area - making it viable only when full R8C/L38C feature set is unused.

Availability

R5F2L38ACDFA#V0 is available at Aetrix Electronics and suitable for refrigerator control panels, microwave oven UIs, washing machine interfaces, and air purifier display modules requiring stable component supply across extended production lifecycles.

Supply support for R5F2L38ACDFA#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, and power management solutions for automotive, industrial, and consumer markets.

The R8C/L38C Group targets cost-optimized, high-integration consumer electronics control applications - emphasizing low-power LCD driving, mixed-signal sensing, and robust real-time control in space-constrained designs.

FAQ

What is the maximum operating frequency and supply voltage range for R5F2L38ACDFA#V0?

R5F2L38ACDFA#V0 operates at up to 20 MHz when supplied at 2.7–5.5 V, and supports 5 MHz operation down to 1.8 V. This dual-voltage capability allows direct use in both 3.3 V and 5 V systems without external regulators, and enables low-power sleep modes at reduced clock speeds while maintaining full peripheral functionality.

Does R5F2L38ACDFA#V0 support background operation (BGO) for data flash writes?

Yes, R5F2L38ACDFA#V0 supports background operation (BGO) for its 1 KB ×4 data flash blocks. This allows firmware to execute application code while simultaneously erasing or programming flash sectors - critical for implementing field-upgradable parameters or logging without disrupting real-time UI or motor control tasks.

How many analog input channels does R5F2L38ACDFA#V0 provide, and what is their resolution?

R5F2L38ACDFA#V0 provides 16 analog input channels with 10-bit resolution, including sample-and-hold and hardware sweep mode. These channels are mapped across P0, P1, and P2 ports (AN4–AN15), enabling simultaneous sampling of multiple sensors - such as temperature, voltage, and current - in appliance subsystems without external multiplexers.

What LCD display configurations are supported by R5F2L38ACDFA#V0?

R5F2L38ACDFA#V0 supports LCD bias voltages of 1/2, 1/3, or 1/4 and duty cycles of static, 1/2, 1/3, 1/4, or 1/8 - configurable via dedicated LCD control registers. Its 48-segment and 8-common output capability enables alphanumeric displays up to 384 segments (48×8), commonly used in multi-function appliance interfaces.

Is hardware LIN bus support integrated into R5F2L38ACDFA#V0?

Yes, R5F2L38ACDFA#V0 integrates a hardware LIN 2.0 module that utilizes UART0 and Timer RA to generate accurate baud rates and synchronization fields. This eliminates the need for external LIN transceivers in subsystem communication - for example, connecting to door switches or temperature sensors in refrigerator or oven assemblies.