Renesas R5F2L38CMDFA#V0

Overview

R5F2L38CMDFA#V0 from Renesas Electronics is an 8-bit R8C CPU core microcontroller in the R8C/L38M Group, featuring 128 KB program flash, 10 KB RAM, and 1 KB × 4 data flash with background operation (BGO). It delivers 50 ns minimum instruction execution at 20 MHz, integrates a 16×16→32-bit hardware multiplier, and supports LCD drive up to 8 common/48 segment outputs - optimized for cost-sensitive consumer appliance control with integrated analog and timing peripherals.

For engineers reviewing the R5F2L38CMDFA#V0 datasheet, R5F2L38CMDFA#V0 pinout, R5F2L38CMDFA#V0 application, or R5F2L38CMDFA#V0 equivalent, key selection criteria include its 80-pin LQFP (0.65 mm pitch) package, -40°C to +85°C industrial temperature grade (D version), 10-bit × 16-channel ADC, dual 8-bit DACs, and hardware LIN module using Timer RA and UART0.

Technical Context

The R5F2L38CMDFA#V0 implements the R8C CPU core with 89 fundamental instructions and single-chip 1 Mbyte address space. Its clock system includes 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 and supported by oscillation stop detection and programmable frequency dividers (1/2/4/8/16).

Peripheral integration centers on mixed-signal control: Timer RD provides three-phase complementary PWM (6-pin output), Timer RC supports 3-pin PWM, and the DTC enables autonomous data transfers from 38 activation sources. The MCU includes voltage detection (power-on reset + configurable VDD monitor), watchdog timer with dedicated low-speed oscillator, and real-time clock (Timer RE) with calendar-mode counting.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (PLQP0080JA-A), 0.65 mm pin pitch, exposed pad not specified, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit MCU applications.

Compared with R5F2L36CMDFA, R5F2L38CMDFA#V0 adds 16 ADC channels and 16 LCD segments for richer sensing/display; versus R5F2L3AMNFA, it trades 20 I/O pins and 8 ADC channels for industrial-grade (-40°C) operation and 80-pin layout compatibility.

Availability

R5F2L38CMDFA#V0 is available at Aetrix Electronics and suitable for refrigerator control units, washing machine main boards, audio system front panels, and office equipment keypad interfaces requiring stable component supply across long production lifecycles.

Supply support for R5F2L38CMDFA#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The R8C/L38M Group is designed for cost-optimized, mixed-signal embedded control in consumer appliances and office equipment - emphasizing integrated LCD drive, analog sensing, and low-power operation without external support ICs.

FAQ

What is the operating temperature range for R5F2L38CMDFA#V0?

R5F2L38CMDFA#V0 is a D-version device rated for -40°C to +85°C ambient operating temperature, making it suitable for industrial and automotive-adjacent consumer applications where thermal robustness is required. This specification is confirmed in Table 1.6 of the R01DS0028EJ0100 datasheet and applies across its full voltage range (1.8–5.5 V).

Does R5F2L38CMDFA#V0 support in-system programming via standard interfaces?

Yes, R5F2L38CMDFA#V0 supports on-chip debug and in-system programming via its built-in serial interface using the dedicated on-board flash rewrite function. Programming is performed through UART or dedicated debug pins, and the background operation (BGO) feature allows flash updates without halting application execution - a key capability documented in Section 1.6 of the datasheet.

How many LCD segments and commons does R5F2L38CMDFA#V0 drive, and what bias options are supported?

R5F2L38CMDFA#V0 drives up to 48 segment outputs and 8 common outputs, as specified for the R8C/L38M Group in Table 1.3 and Figure 1.7. It supports 1/2, 1/3, and 1/4 bias configurations with static, 1/2, 1/3, 1/4, and 1/8 duty cycles, and integrates a voltage multiplier and dedicated regulator - eliminating external bias generation circuitry.

Can R5F2L38CMDFA#V0 generate complementary PWM waveforms for motor control?

Yes, R5F2L38CMDFA#V0's Timer RD module supports complementary PWM mode with triangular wave modulation, delivering synchronized high-side and low-side gate drive signals on six pins. This capability is explicitly defined in Table 1.5 for Timer RD and enables direct control of three-phase inverter bridges in BLDC motor applications without external gate drivers.

What is the maximum ADC sampling rate and resolution supported by R5F2L38CMDFA#V0?

R5F2L38CMDFA#V0 features a 10-bit successive approximation ADC with 16 input channels and integrated sample-and-hold. While the datasheet does not specify a maximum sampling rate in Hz, the conversion time is determined by the internal clock division and prescaler settings - typical operation achieves sub-microsecond conversions per channel in sweep mode, sufficient for real-time temperature, voltage, and current monitoring in appliance systems.