Renesas R4F24245DVFPV

Overview

R4F24245DVFPV from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2424 Group, featuring 256 KB on-chip flash memory, 16 KB RAM, and a 32 MHz max CPU clock. It integrates TPU (16-bit timer pulse unit), SCI (serial communication interface), WDT (watchdog timer), and CPG (clock pulse generator), targeting industrial control and motor drive applications requiring deterministic real-time response.

For engineers reviewing the R4F24245DVFPV datasheet, R4F24245DVFPV pinout, R4F24245DVFPV application, or R4F24245DVFPV equivalent, key selection criteria include its 100-pin LQFP package, 32 MHz operation with internal PLL support, 5 V tolerant I/O, and compatibility with H8S/2400 Series development tools and firmware libraries.

Technical Context

The R4F24245DVFPV implements the H8S/2400 CPU core with 24-bit address space, advanced mode support for extended register access, and dual operating modes (Mode 1 and Mode 2) controlled via MDCR and SYSCR registers. It supports multiple clock sources including external crystal (1–20 MHz), ceramic resonator, or internal RC oscillator, with programmable prescalers in the CPG module.

Interrupt handling uses a priority-based vector table with 128 interrupt sources, including 16 external IRQ pins, TPU compare-match events, SCI transmit/receive flags, and WDTOVF. The INT controller supports both level- and edge-triggered inputs, with configurable sense control via ISCRH/ISCRL registers and software standby release capability.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 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 16-bit microcontroller applications.

Compared with R4F24245DVFPV, the R4F24247DVFPV offers scalable memory for evolving feature sets, while the R4F24265DVFPV adds CAN connectivity and expanded timing resources-neither is pin-compatible nor drop-in, but both share identical mechanical layout and power delivery requirements.

Availability

R4F24245DVFPV is available at Aetrix Electronics and suitable for industrial PLC modules, motor drive controllers, factory automation sensor hubs, and embedded HMI systems requiring stable component supply over extended production lifecycles.

Supply support for R4F24245DVFPV 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/2400 Series, including R4F24245DVFPV, was designed for deterministic real-time control in cost-sensitive industrial equipment where reliability, long-term availability, and toolchain maturity are critical.

FAQ

What is the maximum operating frequency of the R4F24245DVFPV?

The R4F24245DVFPV supports a maximum CPU clock frequency of 32 MHz, achieved using the on-chip PLL with an external 1–20 MHz crystal or resonator input. This frequency is guaranteed across the full industrial temperature range (−40°C to +85°C) and 4.5 V–5.5 V supply voltage. The R4F24245DVFPV's instruction throughput remains deterministic at this speed due to its zero-wait-state flash memory architecture.

Does the R4F24245DVFPV include a hardware watchdog timer?

Yes, the R4F24245DVFPV integrates a configurable watchdog timer (WDT) with window mode support. It operates independently of the main CPU clock, accepts clock inputs from dedicated internal or external sources, and provides timeout periods ranging from 1 ms to 10 s. The WDT in the R4F24245DVFPV can generate either a reset or an interrupt, and its window function prevents premature or delayed refresh - a key safety feature for industrial control firmware.

Is the R4F24245DVFPV pin-compatible with other H8S/2424 variants?

No, the R4F24245DVFPV is not universally pin-compatible with all H8S/2424 variants. While it shares the same 100-pin LQFP package with R4F24247DVFPV and R4F24265DVFPV, differences in peripheral mapping - such as CAN controller presence or A/D channel count - mean that PCB layout must be verified per variant. The R4F24245DVFPV pin assignments are fixed per its specific memory size and peripheral configuration, as documented in Section 1.4 of the Hardware User's Manual.

What development tools support the R4F24245DVFPV?

The R4F24245DVFPV is supported by Renesas' High-performance Embedded Workshop (HEW) IDE and the newer e2 studio platform with CS+ compiler toolchain. Debugging uses the on-chip BSC interface via standard Renesas E1/E20 emulators. The R4F24245DVFPV also works with the H8S/2400 evaluation board (YRDKH8S2424), which provides breakout headers, power regulation, and SCI/TPU test points - enabling rapid validation of R4F24245DVFPV firmware before custom PCB spin.

What is the flash endurance and data retention specification for the R4F24245DVFPV?

The R4F24245DVFPV 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. These values are measured per JEDEC JESD22-A117 and apply to standard erase-block programming sequences. The R4F24245DVFPV's flash controller includes error detection logic and supports in-application programming (IAP), allowing field firmware updates without external programmers.