Renesas HD6417604SVF20V

Overview

HD6417604SVF20V from Renesas Electronics (formerly Hitachi) is a 32-bit SuperH™ RISC microcontroller unit (MCU) in the SH-2 family, featuring a 20 MHz maximum clock frequency, 4 KB on-chip unified cache, and integrated peripherals including dual serial communication interfaces (SCI), two-channel DMA controller, and five 16-bit timers - deployed in industrial control panels and embedded networking gateways requiring deterministic real-time response.

For engineers reviewing the HD6417604SVF20V datasheet, HD6417604SVF20V pinout, HD6417604SVF20V application, or HD6417604SVF20V equivalent, key selection criteria include its 144-pin TQFP package, 3.3 V/5 V dual-voltage operation support, SH-2 instruction set compatibility (62 instructions), cache-enabled deterministic execution, and absence of MMU or FPU - critical for cost-sensitive, non-virtualized real-time firmware deployments.

Technical Context

The HD6417604SVF20V implements the SH-2 architecture with a five-stage pipeline, 32-bit data paths, and 16×32-bit MAC unit supporting DSP-oriented operations. It executes most instructions in a single cycle and supports big-endian memory layout across its 4 GB uniform address space.

Its external bus interface supports 8-/16-/32-bit data widths, asynchronous static RAM/ROM, and synchronous DRAM - enabling direct connection to legacy peripherals without glue logic. Power management includes software-controllable standby and sleep modes, with separate clock gating for CPU, peripherals, and bus subsystems.

Key Specifications

Pinout & Package

HD6417604SVF20V is housed in a 144-pin Thin Quad Flat Package (TQFP) with 0.5 mm pitch, designed for surface-mount reflow assembly and thermal dissipation up to 1.2 W in convection-cooled enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD6417604SVF20V, HD6417605SVF20V offers drop-in replacement with embedded ROM for simplified boot, while SH7619 provides higher peripheral integration at the cost of layout redesign and toolchain migration - making HD6417604SVF20V optimal for stable, cost-constrained industrial control upgrades.

Availability

HD6417604SVF20V is available at Aetrix Electronics and suitable for industrial PLC controllers, network interface gateways, embedded HMI terminals, and legacy equipment adapters requiring stable component supply across multi-year production cycles.

Supply support for HD6417604SVF20V 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 formed from the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions for industrial, automotive, and infrastructure markets.

The HD6417604SVF20V belongs to the SuperH™ SH-2 product line, engineered for deterministic real-time control in cost-sensitive industrial equipment where cache-enhanced throughput and peripheral integration reduce system-level component count.

FAQ

What is the maximum operating frequency of the HD6417604SVF20V?

The HD6417604SVF20V operates at a maximum clock frequency of 20 MHz. This rating is guaranteed across the full industrial temperature range (–40°C to +85°C) and specified under 3.3 V ±0.3 V or 5.0 V ±10% supply conditions. The device achieves deterministic single-cycle instruction execution at this speed due to its five-stage pipeline and on-chip 4 KB cache, making HD6417604SVF20V suitable for hard real-time control loops with sub-50 µs jitter budgets.

Does the HD6417604SVF20V include an onboard memory management unit (MMU)?

No, the HD6417604SVF20V does not include a memory management unit. It belongs to the SH-2 family, which lacks virtual memory support and TLB functionality - features introduced in the later SH-3 generation (e.g., SH7702). HD6417604SVF20V uses a flat 4 GB logical address space with direct physical addressing, simplifying firmware development for bare-metal or real-time OS environments without memory protection requirements.

What package type and pin count does the HD6417604SVF20V use?

The HD6417604SVF20V is packaged in a 144-pin Thin Quad Flat Package (TQFP) with 0.5 mm lead pitch. This RoHS-compliant package supports standard surface-mount reflow profiles and provides mechanical stability for industrial vibration environments. Pin assignments are fixed per Renesas' SH-2 family documentation, and HD6417604SVF20V shares footprint compatibility with other 144-pin SH-2 variants like HD6417605SVF20V, enabling layout reuse in derivative designs.

Can the HD6417604SVF20V operate from a 3.3 V supply only?

Yes, the HD6417604SVF20V is fully specified for 3.3 V ±0.3 V operation and delivers its rated 20 MHz performance at this voltage. It also supports 5.0 V ±10% operation, allowing interoperability with legacy 5 V logic families without level shifters. However, I/O voltage levels track the selected VCC supply - so mixing 3.3 V core operation with 5 V peripherals requires external voltage translation on shared buses, a constraint that applies identically to HD6417604SVF20V in both supply modes.

Is there a built-in debug interface on the HD6417604SVF20V for firmware development?

The HD6417604SVF20V supports on-chip debugging via the SH-DIAG (SuperH Debug Interface) using dedicated pins (MD0–MD3, BKPT, TRST). This interface enables full-speed emulation, breakpoint insertion, and register visibility through Renesas E1/E20 debuggers and compatible third-party tools. Unlike JTAG, SH-DIAG is proprietary to SuperH cores, and HD6417604SVF20V requires no external debug probe header - simplifying PCB layout while maintaining full visibility into cache state, pipeline stalls, and peripheral register updates during development.