Renesas R5F61652D50MHV

Overview

R5F61652D50MHV from Renesas Electronics is a 32-bit CISC microcontroller in the H8SX/1652 Group, featuring a 50 MHz maximum CPU clock, 256 KB on-chip Flash memory, and integrated peripherals including TPU, SCI, WDT, and DTC - deployed in industrial motor control and factory automation systems requiring deterministic real-time response.

For engineers reviewing the R5F61652D50MHV datasheet, R5F61652D50MHV pinout, R5F61652D50MHV application, or R5F61652D50MHV equivalent, key selection criteria include its 144-pin LQFP package, 3.3 V single-supply operation, -40°C to +85°C industrial temperature grade, and support for H8SX architecture-compatible toolchains and debug interfaces.

Technical Context

The R5F61652D50MHV implements the H8SX CPU core with three operating modes (Normal, Middle, Advanced), supports 32-bit addressing up to 4 GB, and integrates a Clock Pulse Generator (CPG) enabling multiple clock sources including PLL-based system clocks up to 50 MHz. It includes a Bus Controller (BSC) for external memory expansion and an Interrupt Controller (INTC) supporting 128 interrupt sources with priority levels.

Peripheral integration includes a 16-bit Timer Pulse Unit (TPU) with 16 channels, four Serial Communications Interfaces (SCI) supporting asynchronous and clock-synchronous modes, a Data Transfer Controller (DTC) for autonomous DMA-like transfers without CPU intervention, and a Watchdog Timer (WDT) with windowed operation and reset capability.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), thermally enhanced with exposed pad; RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F61652D50FPV, the R5F61652D50MHV provides 16 extra I/O and external bus capability; compared with R5F61655D50MHV, it offers identical pinout and peripheral set but reduced Flash and TPU resources - making it optimal for cost-sensitive industrial control where full R5F61655 capacity is unused.

Availability

R5F61652D50MHV is available at Aetrix Electronics and suitable for industrial motor control, factory automation PLCs, and energy metering systems requiring stable component supply across multi-year production cycles.

Supply support for R5F61652D50MHV 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The H8SX/1652 Group, including R5F61652D50MHV, was designed for deterministic real-time control in industrial equipment - emphasizing robust peripheral integration, wide temperature operation, and debug accessibility without sacrificing code density or interrupt latency.

FAQ

What is the maximum operating frequency of the R5F61652D50MHV?

The R5F61652D50MHV operates at a maximum CPU clock frequency of 50 MHz, achieved via its integrated PLL circuit driven by an external crystal or oscillator. This frequency is fully supported across the full industrial temperature range (-40°C to +85°C) and 3.3 V supply voltage. The R5F61652D50MHV's timing specifications guarantee setup/hold margins and instruction execution times under these conditions, enabling reliable real-time control loop performance.

Does the R5F61652D50MHV support external memory expansion?

Yes, the R5F61652D50MHV supports external memory expansion through its dedicated Bus Controller (BSC) module, which provides address/data bus signals, chip select outputs, and wait-state control. This allows connection to SRAM, Flash, or peripheral ASICs using the 144-pin LQFP package's dedicated address and data lines. The R5F61652D50MHV's BSC is configured via SFR registers and supports programmable access timing - essential for interfacing with slower external devices without CPU polling overhead.

What debug interface does the R5F61652D50MHV use?

The R5F61652D50MHV uses the standard Renesas E10A-USB on-chip debug interface, compliant with the H8SX architecture specification. This interface supports non-intrusive breakpoints, real-time register and memory inspection, flash programming, and trace buffer capture. The R5F61652D50MHV requires only a 6-pin JTAG-style connector (including TCK, TMS, TDI, TDO, TRST, and VDD) - no external debug probe components are needed beyond the E10A-USB emulator itself.

Is the R5F61652D50MHV pin-compatible with other H8SX/1652 variants?

Yes, the R5F61652D50MHV shares identical pinout and electrical characteristics with other members of the H8SX/1652 Group in the same 144-pin LQFP package, including R5F61652DxxMHV variants differing only in maximum frequency or Flash configuration. Pin compatibility extends to power, clock, reset, and all peripheral signal assignments - allowing direct substitution within the same package footprint without PCB modification, provided system-level timing and firmware constraints are met.

What is the Flash memory endurance and data retention specification for the R5F61652D50MHV?

The R5F61652D50MHV specifies 10,000 write/erase cycles for its 256 KB on-chip Flash memory, with data retention guaranteed for 20 years at +85°C or 100 years at +25°C ambient. These values are measured per block and verified per Renesas' qualification testing. The R5F61652D50MHV's Flash controller includes built-in error detection and supports sector-wise erase - enabling robust firmware update mechanisms in field-deployed industrial equipment.