Renesas R5F2L38ACNFA#V0

Overview

R5F2L38ACNFA#V0 from Renesas is a 16-bit R8C/L38C Group single-chip microcontroller featuring the R8C CPU core, 96 KB program flash, 10 KB RAM, and 16-channel 10-bit A/D converter. It supports LCD drive (up to 8 common / 48 segment pins), integrated D/A converters (2×8-bit), and operates from 1.8–5.5 V at up to 20 MHz. It targets embedded control in consumer audio equipment and office appliances with integrated LIN module and low-power modes.

For engineers reviewing the R5F2L38ACNFA#V0 datasheet, R5F2L38ACNFA#V0 pinout, R5F2L38ACNFA#V0 application, or R5F2L38ACNFA#V0 equivalent, key selection criteria include its 80-pin LQFP package (0.65 mm pitch), -20°C to +85°C temperature grade (N version), background operation (BGO) data flash capability, and programmable I/O count of 68 pins with 8 high-current drive outputs.

Technical Context

The R5F2L38ACNFA#V0 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit hardware multiplier, and 1 Mbyte address space for efficient code execution. 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, supporting complementary PWM and three-phase waveform generation), UART0/1/2 (with I²C mode on UART2), SSU, LIN hardware module (using Timer RA and UART0), and DTC (Data Transfer Controller) with 38 activation sources and repeat/normal transfer modes - enabling autonomous peripheral-to-memory transfers without CPU intervention.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (PLQP0080JA-A), 14 × 14 mm body, 0.65 mm pin pitch, exposed thermal pad (non-electrical).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2L38ACNFA#V0, R5F2L38ACNFP offers identical functionality in a denser package requiring tighter layout tolerances, while R5F2L36ACNFA reduces I/O and analog resources to lower cost and simplify design for less demanding UI applications.

Availability

R5F2L38ACNFA#V0 is available at Aetrix Electronics and suitable for consumer audio equipment control, office equipment HMI, and home appliance UI applications requiring stable component supply across long production lifecycles.

Supply support for R5F2L38ACNFA#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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.

The R8C/L38C Group, including R5F2L38ACNFA#V0, was designed for cost-sensitive, low-power embedded control in consumer electronics with integrated LCD and analog interfaces - emphasizing HMI simplicity and firmware maintainability.

FAQ

What is the operating temperature range for R5F2L38ACNFA#V0?

The R5F2L38ACNFA#V0 is an N-version device rated for -20°C to +85°C ambient operating temperature. This specification is confirmed in Table 1.6 of the R01DS0095EJ0101 datasheet and applies to all electrical characteristics unless otherwise noted. The D-version (e.g., R5F2L38ACDFA) extends the lower limit to -40°C.

Does R5F2L38ACNFA#V0 support in-system programming via its debug interface?

Yes, R5F2L38ACNFA#V0 includes an on-chip debug function supporting in-system programming and debugging via a single-wire interface. This enables flash programming, breakpoint setting, and real-time variable monitoring without removing the device from the target board - as documented in Section 1.4 and Table 1.6 of the datasheet.

How many LCD segment and common pins does R5F2L38ACNFA#V0 support?

R5F2L38ACNFA#V0 supports up to 48 segment output pins and 8 common output pins, as specified in Table 1.3 and Figure 1.7 of the R01DS0095EJ0101 datasheet. This configuration enables driving multiplexed alphanumeric or custom segment displays commonly used in consumer appliance interfaces.

Can R5F2L38ACNFA#V0 operate from a 3.3 V supply while running at maximum frequency?

No - R5F2L38ACNFA#V0 requires VCC ≥ 2.7 V for 20 MHz operation, per Table 1.6. At 3.3 V, it supports full 20 MHz operation; however, at 1.8 V, maximum frequency drops to 5 MHz. The device is fully compatible with 3.3 V systems and meets all timing specifications within its 2.7–5.5 V operating range.

What peripheral resources are shared with the LIN module in R5F2L38ACNFA#V0?

The LIN module in R5F2L38ACNFA#V0 requires dedicated use of Timer RA and UART0, as stated in Table 1.5 and Section 1.1.1 of the datasheet. These peripherals cannot be simultaneously used for other functions (e.g., general-purpose PWM or UART communication) when LIN is active - requiring careful resource allocation in system design.