Renesas HD6417751RX240V

Overview

HD6417751RX240V from Renesas Electronics is a 32-bit RISC microprocessor based on the SuperH™ SH-4 architecture, featuring an integrated MMU, FPU, PCI controller, dual serial interfaces (SCI/SCIF), RTC, and cache subsystem. It operates at 240 MHz with 1.5 V core voltage and 3.3 V I/O, targeting high-performance embedded multimedia systems requiring real-time OS support and memory management.

For engineers reviewing the HD6417751RX240V datasheet, HD6417751RX240V pinout, HD6417751RX240V application, or HD6417751RX240V equivalent, key selection criteria include its 240 MHz SH-4 CPU performance, PCI bus interface capability, MMU-enabled virtual memory support, and industrial temperature range (–40°C to +85°C) operation.

Technical Context

The HD6417751RX240V implements the full SH-4 instruction set with 5-stage pipeline execution, IEEE 754-compliant floating-point unit, and unified 16 KB operand cache with write-back/write-through modes. Its memory management unit supports both single and multiple virtual memory modes with 64-entry unified TLB and ASID-based context switching.

Hardware peripherals include a PCI controller compliant with PCI Specification Rev. 2.2, two asynchronous serial interfaces (SCI and SCIF), real-time clock with calendar function, and bus state controller supporting DRAM, SDRAM, ROM, SRAM, and PCMCIA. The device uses separate 1.5 V core and 3.3 V I/O power domains with defined absolute maximum ratings and DC/AC timing across –40°C to +85°C.

Key Specifications

Pinout & Package

HD6417751RX240V is housed in a 256-pin BGA package (17 mm × 17 mm, 1.0 mm pitch) with ball grid layout optimized for signal integrity and thermal dissipation in high-speed embedded systems. Pin functions are defined per Renesas Hardware Manual R01UH0457EJ0401 Rev. 4.01, Section 1.4.2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit RISC microprocessor applications.

Compared with HD6417751RX240V, HD6417751RBA240HV offers more I/O and better thermal dissipation in a larger BGA, while HD6417751RF240 trades package robustness and thermal performance for assembly simplicity - neither is pin-compatible, requiring PCB redesign.

Availability

HD6417751RX240V is available at Aetrix Electronics and suitable for digital set-top boxes, industrial HMIs, medical imaging workstations, and automotive infotainment head units requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for HD6417751RX240V 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 industrial, automotive, and enterprise applications.

The HD6417751RX240V belongs to the SH7751R Group within Renesas' SuperH™ family, designed specifically for high-performance embedded multimedia systems requiring integrated PCI, MMU, and FPU capabilities in industrial temperature environments.

FAQ

What is the core architecture and instruction set compatibility of the HD6417751RX240V?

The HD6417751RX240V implements the Renesas SuperH™ SH-4 32-bit RISC architecture with full backward compatibility to SH-3 instructions. It executes the SH-4 instruction set including DSP-oriented operations, FPU instructions, and MMU control instructions. Software developed for earlier SH-4 devices such as HD6417751RBP240 runs natively on HD6417751RX240V without modification, provided peripheral register mappings and clock configurations align.

Does the HD6417751RX240V support PCI bus master and target modes simultaneously?

Yes, the HD6417751RX240V PCI controller supports both host (bus master) and target (slave) modes concurrently through dedicated configuration registers and arbitration logic. In host mode, it initiates transactions to external PCI peripherals; in target mode, it responds to accesses from other PCI masters. Mode selection is software-configurable per transaction type, enabling flexible system topologies such as PCI-based expansion in embedded controllers.

What are the power supply requirements and sequencing constraints for the HD6417751RX240V?

The HD6417751RX240V requires two independent supplies: 1.5 V ±0.1 V for VDD/VDD-PLL1/2 (core/PLL) and 3.0–3.6 V for VDDQ/VDD-RTC/VDD-CPG (I/O/peripherals). Power-on sequencing must assert VDD before VDDQ, with minimum ramp time of 100 µs and no reverse bias between rails. Undervoltage lockout circuitry monitors both domains; failure to meet sequencing causes undefined reset behavior and potential latch-up.

How does the MMU in the HD6417751RX240V handle context switching between multiple tasks?

The HD6417751RX240V MMU uses Address Space Identifiers (ASIDs) to maintain separate TLB entries per task without full TLB flushes. Each process loads a unique 6-bit ASID into the MMUCR register, allowing hardware to tag TLB entries and match translations only within the current context. This reduces OS overhead during task switches and supports real-time determinism - critical for HD6417751RX240V deployments in RTOS-based multimedia systems.

Is the HD6417751RX240V RoHS-compliant and what is its moisture sensitivity level (MSL)?

Yes, the HD6417751RX240V is RoHS-compliant per EU Directive 2011/65/EU and meets lead-free reflow requirements. It carries MSL 3 rating per J-STD-020, meaning floor life is 168 hours at ≤30°C/60% RH. Post-dry-bake reflow must follow Renesas specification R01UH0457EJ0401 Section 23.1 for peak temperature (260°C) and time-above-liquidus (60–90 seconds) to prevent delamination or solder voiding in the 256-pin BGA package.