Renesas R4F2472VBR34DV

Overview

R4F2472VBR34DV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8S/2472 Group, featuring the H8S/2600 CPU core with H8/300H instruction set compatibility, 128 KB on-chip flash memory, 8 KB RAM, and integrated peripherals including 32-bit timer units, serial communication interfaces (SCI), and 10-bit ADC. It targets industrial control and embedded instrumentation applications requiring deterministic real-time response.

For engineers reviewing the R4F2472VBR34DV datasheet, R4F2472VBR34DV pinout, R4F2472VBR34DV application, or R4F2472VBR34DV equivalent, key selection criteria include its 48-MHz max CPU clock, 5V-tolerant I/O capability, 100-pin LQFP package, and support for boot-mode selection via dedicated pins - all critical for legacy industrial system upgrades and motor control firmware porting.

Technical Context

The R4F2472VBR34DV implements the H8S/2600 CPU architecture with 32-bit internal data paths, 24-bit address space, and dual-stack operation (user/system). It supports two operating modes - Normal and Advanced - enabling privileged execution and memory protection for multitasking RTOS environments.

On-chip peripheral integration includes four 32-bit timer pulse units (TPU) with input capture/output compare, three asynchronous serial interfaces (SCI) supporting UART mode, and a 10-bit, 16-channel ADC with scan conversion and trigger synchronization to timer events - all directly memory-mapped and controllable via dedicated module registers.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, plastic body with exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R4F2472VBR34DV, R4F2472VBR34DR offers identical functionality in tape-and-reel form for production lines, while R4F2462VBR34DV provides a cost-optimized alternative with scaled-down memory and timer resources - both require no PCB redesign but differ in firmware scalability and production logistics.

Availability

R4F2472VBR34DV is available at Aetrix Electronics and suitable for industrial motor control, programmable logic controller (PLC) modules, and embedded test equipment requiring stable component supply and long-term lifecycle support.

Supply support for R4F2472VBR34DV 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, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The H8S/2472 Group was designed for cost-sensitive, real-time embedded applications demanding deterministic interrupt response, integrated analog peripherals, and robust 5 V operation - targeting industrial automation, building controls, and legacy system replacements.

FAQ

What is the maximum operating frequency of the R4F2472VBR34DV?

The R4F2472VBR34DV supports a maximum CPU clock frequency of 48 MHz, achieved using an external crystal (up to 10 MHz) multiplied internally via PLL circuitry. This yields 29.4 MIPS performance, verified under 3.0–5.5 V supply and industrial temperature range (−40°C to +85°C). The R4F2472VBR34DV datasheet specifies timing margins for all internal bus cycles and peripheral operations at this frequency.

Does the R4F2472VBR34DV support in-system programming of its flash memory?

Yes, the R4F2472VBR34DV includes 128 KB of on-chip flash memory that supports in-system programming (ISP) via its on-chip debug interface (OCDS) or through user firmware executing from RAM. Programming voltage is supplied internally; no external VPP is required. The R4F2472VBR34DV specification confirms sector erase times of 100 ms and byte-programming times of 20 µs under standard conditions.

How many analog input channels does the R4F2472VBR34DV ADC support?

The R4F2472VBR34DV integrates a 10-bit successive-approximation ADC with 16 selectable analog input channels, mapped to PORT7 and PORT8 pins. Channel selection, conversion start, and result readout are controlled via dedicated ADC registers. The R4F2472VBR34DV hardware manual confirms simultaneous hardware triggering from up to four timer units for synchronized multi-channel sampling.

Is the R4F2472VBR34DV pin-compatible with other devices in the H8S/24xx series?

The R4F2472VBR34DV shares the same 100-pin LQFP package and pin assignment with R4F2462VBR34DV and R4F2463VBR34DV, enabling PCB reuse across variants. However, not all pins map to identical functions - for example, TPU channel count and ADC channel allocation differ. The R4F2472VBR34DV pin description table explicitly defines which alternate functions are active on each pin, and substitution requires firmware validation.

What debug interface does the R4F2472VBR34DV provide?

The R4F2472VBR34DV features Renesas' On-Chip Debug Support (OCDS) interface, accessible via dedicated debug pins (BKGD, RES#) and compliant with the H8S debug specification. It supports breakpoints, watchpoints, register inspection, and real-time trace without halting CPU execution. The R4F2472VBR34DV hardware manual documents OCDS register layout and timing requirements for external debugger integration.