Renesas R5F72394BDFP#V0

Overview

R5F72394BDFP#V0 from Renesas Electronics is a 32-bit RISC microcontroller based on the SuperH™ SH-2A CPU core, featuring integrated FPU, 512 KB flash memory, 64 KB RAM, and support for CAN 2.0B, multiple UARTs, and 12-bit ADC. It targets industrial motor control and factory automation systems requiring deterministic real-time response and mixed-signal integration.

For engineers reviewing the R5F72394BDFP#V0 datasheet, R5F72394BDFP#V0 pinout, R5F72394BDFP#V0 application, or R5F72394BDFP#V0 equivalent, key selection criteria include SH-2A instruction set compatibility, on-chip FPU for servo loop computation, 64-MHz max operating frequency, and QFP-144 package with 118 I/O pins supporting high-noise industrial environments.

Technical Context

The R5F72394BDFP#V0 implements the SH-2A core with dual-issue superscalar architecture, 32-bit integer ALU, and IEEE 754-compliant single-precision floating-point unit. It integrates a clock pulse generator (CPG) supporting PLL-based frequency synthesis up to 64 MHz, and a data transfer controller (DTC) enabling autonomous peripheral-to-memory transfers without CPU intervention.

Peripheral subsystems include a 12-channel 12-bit ADC with 1.1 μs conversion time, four 16-bit timer units (MTU), two CAN controllers compliant with ISO 11898-1:2003, and six serial communication interfaces (SCI) configurable as UART, LIN, or smart card mode - all synchronized via a shared bus controller (BSC) with wait-state programmability.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), thermally enhanced with exposed pad for industrial thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F72394BDFP#V0, the R5F72395BDFP#V0 offers scalable memory while preserving full hardware/software compatibility, whereas the R7F7016883AFP#AA0 represents a platform shift requiring redesign - making the former a true upgrade path and the latter a cross-family alternative for non-FPU workloads.

Availability

R5F72394BDFP#V0 is available at Aetrix Electronics and suitable for industrial motor control, factory automation PLCs, and intelligent power electronics requiring stable component supply across extended production lifecycles.

Supply support for R5F72394BDFP#V0 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 automotive, industrial, and IoT markets.

The SH7239 Group, including R5F72394BDFP#V0, was designed specifically for high-performance industrial automation applications demanding real-time determinism, integrated analog/mixed-signal capability, and functional safety readiness.

FAQ

What is the maximum operating frequency of the R5F72394BDFP#V0?

The R5F72394BDFP#V0 operates at a maximum frequency of 64 MHz, achieved via its on-chip PLL-based clock pulse generator (CPG). This frequency enables 128 MIPS peak performance for real-time control tasks. The R5F72394BDFP#V0 supports multiple clock sources including crystal resonators (4–20 MHz) and external clocks, with programmable dividers and multipliers to maintain stability under varying load and temperature conditions.

Does the R5F72394BDFP#V0 include a hardware floating-point unit?

Yes, the R5F72394BDFP#V0 integrates a full IEEE 754-compliant single-precision floating-point unit (FPU) as part of the SH-2A CPU core. This FPU accelerates trigonometric, exponential, and matrix operations essential for field-oriented control (FOC) and sensor fusion. Unlike software-emulated floating point, the FPU in R5F72394BDFP#V0 executes common math functions in 1–3 cycles, reducing servo loop latency significantly.

How many CAN interfaces does the R5F72394BDFP#V0 support?

The R5F72394BDFP#V0 supports two independent CAN 2.0B controllers compliant with ISO 11898-1:2003. Each controller features 32 message objects with hardware acceptance filtering, FIFO buffering, and error counters. These interfaces are commonly used in R5F72394BDFP#V0-based designs for motor command distribution and diagnostic reporting in distributed automation systems.

What is the ADC resolution and conversion speed of the R5F72394BDFP#V0?

The R5F72394BDFP#V0 includes a 12-bit successive approximation ADC with 12 input channels and a minimum conversion time of 1.1 μs per sample. It supports hardware-triggered sampling synchronized to PWM periods, critical for current sensing in motor control. The ADC also provides built-in features such as offset calibration, averaging, and window comparison - all implemented in R5F72394BDFP#V0's analog subsystem without CPU overhead.

Is the R5F72394BDFP#V0 pin-compatible with other SH7239 Group MCUs?

Yes, the R5F72394BDFP#V0 is pin-compatible with other members of the SH7239 Group in the same 144-pin LQFP package, including R5F72395BDFP#V0 and R5F72396BDFP#V0. This allows direct substitution for memory scaling or feature upgrades without PCB revision. All share identical pin assignments, electrical characteristics, and peripheral mapping - a key design advantage confirmed in Renesas' SH7239 Group User's Manual: Hardware (Rev. 2.00, Jun 2013).