Renesas R5F2L38ACNFA#V1

Overview

R5F2L38ACNFA#V1 from Renesas is a 16-bit R8C/L38C Group single-chip microcontroller featuring an R8C CPU core, 96 KB flash program memory, 10 KB data flash with background operation (BGO), and 10 KB RAM. It delivers 50 ns minimum instruction execution at 20 MHz, integrates a 16×16→32-bit hardware multiplier, and supports 16-channel 10-bit A/D conversion - optimized for LCD-based consumer appliance control.

For engineers reviewing the R5F2L38ACNFA#V1 datasheet, R5F2L38ACNFA#V1 pinout, R5F2L38ACNFA#V1 application, or R5F2L38ACNFA#V1 equivalent, key selection criteria include its 80-pin LQFP package (0.65 mm pitch), 68 programmable I/O ports with 8 high-current drive pins, real-time clock (timer RE), LIN bus support via UART0 + timer RA, and integrated LCD driver supporting up to 48 segment outputs and 8 common outputs.

Technical Context

The R5F2L38ACNFA#V1 implements the R8C CPU core with 89 fundamental instructions and a dedicated 16×16-bit multiplier for efficient arithmetic-intensive tasks. 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 management across wait, stop, and power-off states.

Peripheral integration centers on mixed-signal timing and interface functions: Timer RD provides three-phase PWM with complementary output (6-pin) and reset-synchronous modulation; UART2 supports I²C-bus mode and multiprocessor communication; and the LCD controller integrates voltage multiplier and regulator for bias generation, supporting static, 1/2–1/4 duty, and 1/3 bias configurations.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2L38ACNFA#V1, R5F2L38ACNFP offers identical functionality in a denser package requiring tighter layout tolerances, while R5F2L36ACNFA reduces I/O and analog resources to lower cost - neither is pin-compatible, but both share the same toolchain and peripheral register map.

Availability

R5F2L38ACNFA#V1 is available at Aetrix Electronics and suitable for refrigerator control panels, printer front panels, audio receiver interfaces, and smart thermostat displays requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant packaging.

Supply support for R5F2L38ACNFA#V1 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/L38C Group is designed for cost-effective, low-power embedded control in consumer appliances with integrated LCDs - emphasizing high I/O count, on-chip bias generation, and real-time responsiveness for human-interface applications.

FAQ

What is the maximum LCD segment count supported by the R5F2L38ACNFA#V1?

The R5F2L38ACNFA#V1 supports up to 48 segment outputs and 8 common outputs, enabling multiplexed LCD drive for displays with up to 384 segments (8 × 48). This capability is confirmed in Table 1.3 and Figure 1.7 of the R01DS0095EJ0101 datasheet, and applies specifically to the R8C/L38C Group - including R5F2L38ACNFA#V1.

Does the R5F2L38ACNFA#V1 include hardware LIN bus support?

Yes, the R5F2L38ACNFA#V1 integrates a hardware LIN module that uses UART0 and timer RA to implement ISO 9141-2/SAE J2602-compliant LIN 2.0 communication. This is explicitly stated in Table 1.5 (Serial Interface section) and Figure 1.7 (block diagram), and requires no external transceiver for basic master/slave operation.

What package type and pin pitch does the R5F2L38ACNFA#V1 use?

The R5F2L38ACNFA#V1 uses an 80-pin LQFP package designated PLQP0080JA-A with a 0.65 mm pin pitch, as documented in Table 1.9 and Figure 1.3 of the R01DS0095EJ0101 datasheet. This differs from the 0.50 mm pitch PLQP0080KB-A package used by the R5F2L38ACNFP variant.

How many A/D converter channels does the R5F2L38ACNFA#V1 provide?

The R5F2L38ACNFA#V1 provides 16 channels of 10-bit A/D conversion with sample-and-hold and sweep mode, as specified in Table 1.5 under "A/D Converter" for the R8C/L38C Group. This is confirmed across Figures 1.7 (block diagram) and Table 1.2 (I/O port mapping showing AN0–AN15).

Is background operation (BGO) supported for data flash on the R5F2L38ACNFA#V1?

Yes, the R5F2L38ACNFA#V1 supports background operation (BGO) for its 1 KB × 4 data flash blocks, allowing simultaneous code execution and flash erase/write operations. This feature is listed in Table 1.6 ("Flash Memory") and Section 1.1.1 ("Features") of the R01DS0095EJ0101 datasheet, and is standard across all R8C/L38C Group devices.