Renesas R4F2462VFQ34V

Overview

R4F2462VFQ34V from Renesas Electronics is a 16-bit single-chip microcomputer in the H8S/2462 Group, featuring the H8S/2600 CPU core with H8/300H instruction set compatibility, 256 KB on-chip flash memory, 16 KB RAM, and integrated peripherals including 32-bit timer units, serial communication interfaces (SCI), and 10-bit ADC. It targets industrial control systems requiring deterministic real-time response and embedded firmware execution.

For engineers reviewing the R4F2462VFQ34V datasheet, R4F2462VFQ34V pinout, R4F2462VFQ34V application, or R4F2462VFQ34V equivalent, key selection criteria include flash endurance (10,000 write/erase cycles), operating voltage range (2.7–5.5 V), -40°C to +85°C industrial temperature grade, and QFP-100 package compatibility with legacy H8S/2400 designs.

Technical Context

The R4F2462VFQ34V implements the H8S/2600 CPU core with 32-bit internal data paths, supporting both Normal and Advanced operating modes for flexible interrupt handling and register access. Its memory map includes unified 24-bit addressing, with on-chip flash mapped at 0x000000–0x3FFFF and RAM at 0xFFE000–0xFFFFFF.

Peripheral integration includes four 16-bit timer pulse units (TPU) with input capture/compare and PWM output, two asynchronous SCI channels with framing error detection, and a 10-bit, 8-channel successive-approximation ADC with sample-and-hold and conversion time of 1.2 μs per channel.

Key Specifications

Pinout & Package

Package: 100-pin plastic quad flat package (QFP), 14 mm × 14 mm, 0.65 mm pitch, lead-free (Pb-free) and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R4F2462VFQ34V, R4F2463VFQ34V offers increased flash capacity without altering peripheral configuration or timing behavior, while R5F2462VDFP34V provides identical functionality in an LQFP variant optimized for thermal management and manufacturing robustness - both retain full software and pin compatibility.

Availability

R4F2462VFQ34V is available at Aetrix Electronics and suitable for industrial motor control, PLC I/O modules, factory sensor hubs, and embedded HMI applications requiring stable component supply across multi-year production cycles.

Supply support for R4F2462VFQ34V 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 H8S/2462 Group was designed for cost-sensitive, real-time embedded control applications in factory automation and industrial equipment, emphasizing deterministic interrupt latency, on-chip memory integration, and long-term supply stability.

FAQ

What is the maximum operating frequency of the R4F2462VFQ34V?

The R4F2462VFQ34V operates at a maximum CPU frequency of 32 MHz when driven by an external 20 MHz crystal with internal PLL multiplication. This frequency is validated across the full industrial temperature range (-40°C to +85°C) and supports real-time execution of control loops with sub-microsecond jitter. The R4F2462VFQ34V achieves this performance using the H8S/2600 core's dual-bus architecture and zero-wait-state flash access.

Does the R4F2462VFQ34V support in-system programming (ISP)?

Yes, the R4F2462VFQ34V supports in-system programming via its single-wire background debug mode (BDM) interface using the BKGD pin. This allows full flash erase, program, and verify operations without removing the device from the PCB. The R4F2462VFQ34V implements dedicated boot ROM code that enables secure ISP even when user code is corrupted, provided the BDM interface remains accessible and powered.

What are the key differences between R4F2462VFQ34V and R4F2472VFQ34V?

The R4F2462VFQ34V and R4F2472VFQ34V share the same H8S/2400 Series architecture but differ in peripheral configuration: the R4F2472VFQ34V adds a CAN controller and USB interface, while the R4F2462VFQ34V omits those modules and instead includes additional TPU channels. Both use identical QFP-100 packaging and pinout, making them drop-in replacements where CAN/USB are unused. The R4F2462VFQ34V is optimized for pure motor/sensor control without networking overhead.

Is the R4F2462VFQ34V qualified for automotive applications?

No, the R4F2462VFQ34V is rated for industrial-grade operation (-40°C to +85°C) and classified as "Standard" quality per Renesas documentation. It is not AEC-Q100 qualified and lacks automotive-specific features such as extended temperature range (-40°C to +125°C), enhanced ESD immunity, or fault-tolerant peripheral design. For automotive use, Renesas recommends the RH850 or RL78/F1x families instead of the R4F2462VFQ34V.

How is the ADC calibrated on the R4F2462VFQ34V?

The R4F2462VFQ34V includes factory-trimmed ADC offset and gain calibration constants stored in on-chip ROM. During initialization, firmware loads these values into ADC control registers (ADCSR and ADCR) to achieve ±2 LSB integral nonlinearity (INL) across the full 0–VREF range. Calibration is one-time and does not require external reference; the R4F2462VFQ34V supports internal VREF generation or external reference input via the AVREF pin.