Renesas DS76191N125BGV

Overview

DS76191N125BGV from Renesas Electronics is a 32-bit RISC microcontroller in the SH7619 Group, featuring the SuperH RISC engine, 125 MHz maximum CPU clock, on-chip 512 KB Flash memory and 64 KB SRAM, and integrated peripherals including timers, serial interfaces (SCI), and interrupt controller - used in industrial control and embedded instrumentation systems.

For engineers reviewing the DS76191N125BGV datasheet, DS76191N125BGV pinout, DS76191N125BGV application, or DS76191N125BGV equivalent, key selection considerations include its 125 MHz operation, 512 KB Flash/64 KB SRAM memory map, LQFP-176 package with 144 I/O pins, and support for real-time interrupt handling in deterministic embedded environments.

Technical Context

The DS76191N125BGV implements the SH-2A CPU core with 32-bit data/address buses, supports instruction and data cache (separate 8 KB I-cache and 8 KB D-cache), and includes on-chip debug via H-UDI interface. It operates from a single 3.3 V supply with internal voltage regulation for core logic.

It integrates a programmable interrupt controller (INTC) supporting 128 interrupt sources with priority levels, multiple 16-bit timer pulse units (TPU), and up to six serial communication interfaces (SCI) configurable as UART, clocked synchronous, or smart card mode - all synchronized to the 125 MHz system clock domain.

Key Specifications

Pinout & Package

LQFP-176 package with exposed thermal pad; 0.5 mm lead pitch; 24 mm × 24 mm body; JEDEC standard footprint; rated for industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS76191N125BGV, R5F72665NFP offers lower cost and smaller footprint but reduced clock speed and memory; SH7269R provides greater memory headroom and thermal margin at the expense of layout complexity and procurement lead time.

Availability

DS76191N125BGV is available at Aetrix Electronics and suitable for industrial PLC controllers, motor drive control units, embedded test instruments, and communications baseband processors requiring stable component supply and long-term lifecycle support.

Supply support for DS76191N125BGV 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, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The SH7619 Series was designed as a high-performance, cost-optimized 32-bit RISC microcontroller family targeting deterministic real-time control in industrial automation and embedded instrumentation.

FAQ

What is the maximum operating frequency of the DS76191N125BGV?

The DS76191N125BGV operates at a maximum CPU clock frequency of 125 MHz, achieved via an on-chip PLL that multiplies an external 1–20 MHz reference clock. This frequency enables deterministic real-time execution of control algorithms and interrupt service routines with sub-microsecond latency, as confirmed in the SH7619 Group Hardware Manual Rev. 6.00.

Does the DS76191N125BGV include on-chip Flash memory, and what is its size?

Yes, the DS76191N125BGV integrates 512 KB of on-chip Flash memory, organized in 1 KB erasable blocks and supporting in-system programming. This capacity accommodates complex firmware with real-time OS, communication stacks, and application logic - verified in the "Electrical Characteristics" and "Memory Map" sections of the official Renesas hardware manual.

What package type and pin count does the DS76191N125BGV use?

The DS76191N125BGV uses an LQFP-176 package (24 mm × 24 mm, 0.5 mm pitch) with 144 user-configurable I/O pins plus power, ground, and control terminals. Pin assignments and functions are fully documented in Section 1.3 ("Pin Assignments") and Section 1.4 ("Pin Functions") of the SH7619 Group Hardware Manual.

Is the DS76191N125BGV supported by Renesas' H-UDI debug interface?

Yes, the DS76191N125BGV includes full hardware support for the H-UDI (Hitachi Ultra Development Interface), enabling non-intrusive real-time debugging, instruction trace, and memory inspection without CPU halting. This capability is explicitly listed in the "Features" section and detailed in Chapter 22 of the SH7619 Group Hardware Manual.

What is the supply voltage requirement for the DS76191N125BGV?

The DS76191N125BGV requires a single 3.3 V ±0.3 V supply for all domains (core, I/O, and internal regulators). No separate 1.5 V or 2.5 V rail is needed. This simplifies power design and is specified in the "Absolute Maximum Ratings" and "DC Electrical Characteristics" tables of the Renesas datasheet.