Renesas R5F61653RD50FPV

Overview

R5F61653RD50FPV from Renesas Electronics is a 32-bit CISC microcontroller in the H8SX/1653R Group, featuring a 50 MHz CPU clock, 256 KB on-chip Flash memory, and integrated peripherals including TPU, SCI, WDT, and DTC. It operates from a 3.0–3.6 V supply and targets industrial control and embedded automation systems requiring deterministic real-time response.

For engineers reviewing the R5F61653RD50FPV datasheet, R5F61653RD50FPV pinout, R5F61653RD50FPV application, or R5F61653RD50FPV equivalent, key selection criteria include its 100-pin LQFP package, 50 MHz operation under industrial temperature range (−40°C to +85°C), Flash endurance of 10,000 write/erase cycles, and support for single-cycle instruction execution on critical paths.

Technical Context

The R5F61653RD50FPV implements the H8SX core with three operating modes-Normal, Middle, and Advanced-enabling configurable privilege levels and memory protection. Its bus controller supports wait-state insertion and external memory expansion up to 16 MB.

Peripheral integration includes a 16-bit Timer Pulse Unit (TPU) with 8 channels, two full-duplex Serial Communications Interfaces (SCI) supporting asynchronous and clock-synchronous modes, and a Data Transfer Controller (DTC) that offloads CPU during memory-to-peripheral transfers without interrupt overhead.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), thermally enhanced with exposed pad (FPV suffix). Pinout conforms to H8SX/1653R Group specification Rev.2.00 (Sep. 2008).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F61653RD50FPV, the R5F61653MD50FPV extends thermal range without altering code or layout, while R5F61654RD50FPV adds memory and interface headroom within the same footprint-both preserve toolchain compatibility and debug infrastructure.

Availability

R5F61653RD50FPV is available at Aetrix Electronics and suitable for industrial PLCs, motor drives, building automation gateways, and factory asset monitors requiring stable component supply across multi-year production cycles.

Supply support for R5F61653RD50FPV 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 enterprise applications.

The H8SX/1653R Group-including R5F61653RD50FPV-is designed for deterministic real-time control in resource-constrained industrial equipment, emphasizing peripheral integration, Flash reliability, and long-term availability.

FAQ

What is the maximum operating frequency of the R5F61653RD50FPV?

The R5F61653RD50FPV operates at a maximum CPU clock frequency of 50 MHz, achieved via internal PLL multiplication of an external crystal or clock source. This frequency is fully supported across the full industrial temperature range (−40°C to +85°C) and supply voltage (3.0–3.6 V), enabling sub-microsecond interrupt latency and tight real-time loop execution. The R5F61653RD50FPV datasheet specifies timing margins validated at this speed under worst-case conditions.

Does the R5F61653RD50FPV support in-system programming via serial interface?

Yes, the R5F61653RD50FPV supports Flash programming through its SCI0 interface using Renesas' standard serial bootloader protocol. This allows field firmware updates without JTAG hardware, provided the boot mode pins are configured correctly at reset. The R5F61653RD50FPV bootloader occupies fixed ROM space and supports block erase, byte/word programming, and checksum verification-all documented in the H8SX Hardware Manual Rev.2.00.

What is the Flash endurance rating for the R5F61653RD50FPV?

The R5F61653RD50FPV features 256 KB of on-chip Flash memory rated for 10,000 write/erase cycles per sector under industrial conditions. Endurance testing follows JEDEC JESD22-A117 standards, with data retention guaranteed for 20 years at +85°C. Wear leveling must be implemented in firmware; the R5F61653RD50FPV does not include hardware wear-leveling logic.

Which communication peripherals are integrated into the R5F61653RD50FPV?

The R5F61653RD50FPV integrates two full-duplex Serial Communications Interfaces (SCI0 and SCI1), each supporting asynchronous UART, clock-synchronous SPI-like modes, and LIN 2.0 frame formatting. It also includes a Data Transfer Controller (DTC) for autonomous memory-peripheral transfers and a Bus Controller (BSC) for external memory expansion. No CAN or USB controllers are present on the R5F61653RD50FPV.

Is the R5F61653RD50FPV pin-compatible with other members of the H8SX/1653R Group?

Yes, the R5F61653RD50FPV shares identical pin assignment, electrical characteristics, and package (100-pin LQFP FPV) with all variants in the H8SX/1653R Group, including R5F61653MD50FPV and R5F61653RDxxFPV speed grades. This allows direct substitution where thermal or timing requirements align-no PCB redesign is needed when migrating between these R5F61653R-series parts.