Renesas R5F2L38CBNFP#V2

Overview

R5F2L38CBNFP#V2 from Renesas Electronics is an 8-bit R8C/L38B Group microcontroller featuring the R8C CPU core, 128 KB flash program ROM, 10 KB RAM, and integrated LCD controller supporting up to 8 common and 48 segment outputs. It operates at up to 20 MHz (V_CC = 2.7–5.5 V), delivers 10-bit ADC across 16 channels, and targets embedded control in cost-sensitive consumer and industrial HMI applications.

For engineers reviewing the R5F2L38CBNFP#V2 datasheet, R5F2L38CBNFP#V2 pinout, R5F2L38CBNFP#V2 application, or R5F2L38CBNFP#V2 equivalent, key selection criteria include its -40°C to +85°C operating temperature (D version), 68-pin LQFP package, background operation (BGO)-enabled flash programming, and hardware LIN support via UART0 and Timer RA - all confirmed for this exact variant.

Technical Context

The R5F2L38CBNFP#V2 implements the R8C CPU core with 89 fundamental instructions, 16×16-bit multiplier, and 1 Mbyte address space. It integrates a 10-bit ADC with sweep mode across 16 analog inputs, dual UARTs (UART0/UART1), I²C-bus-compatible serial interface (UART2), and a dedicated hardware LIN module using Timer RA and UART0.

Its clock system includes four sources: external XIN (up to 20 MHz), 32 kHz XCIN, high-speed on-chip oscillator (adjustable), and low-speed on-chip oscillator. Power management supports wait, stop, and power-off modes with typical current as low as 0.02 µA (power-off, timer RE disabled) at 3.0 V.

Key Specifications

Pinout & Package

68-pin LQFP package (PLQP0068KB-A), 10 mm × 10 mm, 0.5 mm pitch, exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F2L38CBNFP#V2, R5F2L38CADFP#V2 trades industrial temperature range for lower cost in benign environments, while R5F2L36CBNFP#V2 reduces pin count and peripheral set to fit smaller PCBs - neither offers drop-in replacement without design review.

Availability

R5F2L38CBNFP#V2 is available at Aetrix Electronics and suitable for home appliance control panels, industrial temperature controllers, and smart power strip UIs requiring stable component supply across long production lifecycles.

Supply support for R5F2L38CBNFP#V2 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 solutions for industrial, automotive, and IoT markets.

The R8C/L38B Group, including R5F2L38CBNFP#V2, was designed for cost-optimized human-machine interface applications requiring integrated LCD driving, analog sensing, and robust communication in extended temperature environments.

FAQ

What is the maximum operating frequency of the R5F2L38CBNFP#V2?

The R5F2L38CBNFP#V2 supports a maximum external clock frequency of 20 MHz when V_CC is between 2.7 V and 5.5 V. At lower supply voltages (1.8–5.5 V), the maximum frequency is 5 MHz. Its internal high-speed on-chip oscillator is adjustable but does not exceed 20 MHz. This timing governs instruction execution, ADC conversion rate, and UART baud generation in the R5F2L38CBNFP#V2.

Does the R5F2L38CBNFP#V2 include data flash memory?

No, the R5F2L38CBNFP#V2 does not include data flash memory. As a member of the R8C/L38B Group, it lacks the background operation (BGO)-enabled 1 KB × 4 data flash blocks found in the 'A' variants (e.g., R8C/L38A). All non-volatile storage is allocated to 128 KB of program ROM, which supports in-system programming but not runtime data rewriting like true data flash.

What LCD configuration does the R5F2L38CBNFP#V2 support?

The R5F2L38CBNFP#V2 supports up to 8 common (COM0–COM7) and 48 segment (SEG0–SEG47) outputs with selectable 1/2 or 1/3 bias and static/1/2/1/3/1/4 duty cycles. Voltage multiplier and dedicated regulator are integrated, enabling direct connection to LCD glass without external components. This matches the R8C/L38B Group specification confirmed in Table 1.4 and Section 1.1.3 of the datasheet.

Is hardware LIN functionality available on the R5F2L38CBNFP#V2?

Yes, the R5F2L38CBNFP#V2 includes a dedicated hardware LIN module compliant with LIN 2.0/2.1, implemented using UART0 and Timer RA. This offloads protocol handling from firmware, ensuring precise timing for break field detection, sync field alignment, and checksum calculation - a confirmed feature of the R8C/L38B Group per Section 1.1.3 and Table 1.6.

What is the operating temperature grade of the R5F2L38CBNFP#V2?

The R5F2L38CBNFP#V2 is a D-version device rated for -40°C to +85°C operating ambient temperature, as indicated by the 'D' in the part number suffix and confirmed in Table 1.7. This qualifies it for industrial and automotive cabin applications where thermal stability is required beyond commercial-grade limits.