Renesas R5F61648LD50FPV

Overview

R5F61648LD50FPV from Renesas Electronics is a 32-bit CISC microcontroller in the H8SX/1648L Group, featuring a 50 MHz maximum CPU clock, 512 KB on-chip Flash memory, and integrated peripherals including TPU, SCI, I²C, and WDT - deployed in industrial motor control and factory automation systems requiring deterministic real-time response.

For engineers reviewing the R5F61648LD50FPV datasheet, R5F61648LD50FPV pinout, R5F61648LD50FPV application, or R5F61648LD50FPV equivalent, key selection criteria include its 144-pin LQFP package, 3.3 V single-supply operation, 12-bit ADC with 16 channels, and support for H8SX architecture-compatible toolchains and debug interfaces.

Technical Context

The R5F61648LD50FPV implements the H8SX V2 core with three operating modes (Normal, Middle, Advanced), enabling configurable instruction set compatibility and privilege-level separation. It integrates a Clock Pulse Generator (CPG) supporting PLL-based frequency synthesis and multiple clock sources including external crystal, ceramic resonator, or internal oscillator.

Peripheral subsystems include a 16-bit Timer Pulse Unit (TPU) with PWM and input capture, four Serial Communications Interfaces (SCI) supporting asynchronous and LIN modes, and a Data Transfer Controller (DTC) for autonomous memory-to-peripheral DMA - all synchronized to the same bus matrix and interrupt controller (INTC) with 128 vector entries.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit industrial microcontroller applications.

Compared with R5F61648LD50FPV, the R5F61648AD50FPV offers higher thermal and ESD robustness at no pinout or software change, while the R5F61648GD50FPV trades memory capacity for lower unit cost - both retain full peripheral compatibility and toolchain support.

Availability

R5F61648LD50FPV is available at Aetrix Electronics and suitable for industrial motor control, factory automation PLCs, and building energy management systems requiring stable component supply across multi-year production cycles.

Supply support for R5F61648LD50FPV 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 industrial, automotive, and infrastructure markets.

The R5F61648LD50FPV belongs to the H8SX/1648L Group - a family designed specifically for deterministic real-time control in industrial equipment, emphasizing peripheral integration, code efficiency, and long-term supply stability.

FAQ

What is the maximum operating frequency of the R5F61648LD50FPV?

The R5F61648LD50FPV operates at a maximum CPU clock frequency of 50 MHz, achieved via its integrated Clock Pulse Generator (CPG) with PLL circuitry. This frequency enables sub-200 ns instruction cycle times and supports hard real-time control loops in motor drive and automation applications. The R5F61648LD50FPV maintains timing compliance across its full −40°C to +85°C operating range when supplied with 3.3 V ±0.3 V.

Does the R5F61648LD50FPV support in-system programming (ISP)?

Yes, the R5F61648LD50FPV supports in-application programming (IAP) of its 512 KB on-chip Flash memory using the built-in ROM-resident bootloader. This allows firmware updates without external programming hardware, provided the application reserves dedicated Flash sectors and manages erase/write sequencing per Renesas' H8SX Flash specification. The R5F61648LD50FPV requires no special voltage or timing sequences beyond those defined in its Flash control registers.

What debug interface does the R5F61648LD50FPV use?

The R5F61648LD50FPV uses the standard H8SX on-chip debugging interface compliant with Renesas' E8/E8a and E20 debug emulators. It supports full breakpoint, watchpoint, and real-time trace capabilities via the dedicated DBG pin group and SWD-like serial protocol over a 4-wire connection. The R5F61648LD50FPV does not require external JTAG boundary-scan circuitry and is fully supported by CS+ (CubeSuite+) IDE and associated debug probes.

Is the R5F61648LD50FPV pin-compatible with other H8SX/1648 variants?

Yes, the R5F61648LD50FPV shares identical pin assignment, electrical characteristics, and package (144-pin LQFP) with other members of the H8SX/1648x series, including R5F61648AD50FPV and R5F61648GD50FPV. All variants maintain full pin-to-pin compatibility, allowing direct substitution in existing PCB layouts when memory or temperature requirements align. The R5F61648LD50FPV requires no layout changes for drop-in replacement within the L/A/G/H subfamilies.

What is the ADC resolution and channel count on the R5F61648LD50FPV?

The R5F61648LD50FPV integrates a 12-bit successive-approximation ADC with 16 analog input channels (AD0–AD15), supporting simultaneous sampling via external trigger sources such as TPU compare match or SCI receive events. Conversion time is 1.2 µs per sample, and the ADC includes built-in offset calibration and programmable sampling window control. The R5F61648LD50FPV ADC operates across the full 0–VREF range with VREF selectable internally or externally.