Renesas R5F61664MD50BGV

Overview

R5F61664MD50BGV from Renesas Electronics is a 32-bit CISC microcontroller in the H8SX/1664M Group, featuring a 50 MHz CPU clock, 512 KB on-chip Flash memory, and 48 KB RAM. It integrates a programmable pulse generator (PPG), 16-bit timer pulse unit (TPU), serial communications interface (SCI), and watchdog timer (WDT), targeting real-time industrial control applications requiring deterministic timing and peripheral integration.

For engineers reviewing the R5F61664MD50BGV datasheet, R5F61664MD50BGV pinout, R5F61664MD50BGV application, or R5F61664MD50BGV equivalent, this page delivers verified package mapping (LQFP-144), confirmed pin functions, functional alternatives with documented differences, and precise electrical specifications including operating voltage (3.0–3.6 V), ambient temperature range (−20 to +75 °C), and Flash endurance (10,000 write/erase cycles).

Technical Context

The R5F61664MD50BGV implements the H8SX CPU core with three operating modes (Normal, Middle, Advanced) and supports up to 50 MHz operation via internal PLL. Its system architecture includes a bus controller (BSC), clock pulse generator (CPG), and interrupt controller (INTC) enabling deterministic response to external events within ≤1 µs latency.

Peripheral integration includes dual SCI channels supporting asynchronous communication at up to 2 Mbps, a 16-bit TPU with input capture/output compare and PWM generation, and a data transfer controller (DTC) for zero-CPU-overhead memory-to-peripheral transfers. All peripherals are memory-mapped and accessible via 32-bit addressing space.

Key Specifications

Pinout & Package

LQFP-144 package with 0.5 mm lead pitch, 20 mm × 20 mm body size, and exposed thermal pad (EP). Pin 1 marked by dot; pins numbered counter-clockwise. Thermal pad must be soldered to PCB ground plane for reliable thermal dissipation under sustained 50 MHz operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F61664MD50BGV, the R5F61664RD50BGV extends temperature range and adds Flash ECC for enhanced reliability in harsh environments, while the R5F566TEADFP offers higher compute throughput and specialized motor control IP at the cost of software migration effort and non-compatible peripherals.

Availability

R5F61664MD50BGV is available at Aetrix Electronics and suitable for industrial PLC I/O modules, motor drive control units, energy meter communication hubs, and building automation gateways requiring stable component supply across multi-year production cycles.

Supply support for R5F61664MD50BGV 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 manufacturer headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The R5F61664MD50BGV belongs to the H8SX/1664M Group - a family of 32-bit microcontrollers designed for deterministic real-time control in industrial equipment where predictable timing, peripheral integration, and long-term supply stability are critical.

FAQ

What is the maximum operating frequency of the R5F61664MD50BGV?

The R5F61664MD50BGV supports a maximum CPU clock frequency of 50 MHz, achieved using the on-chip clock pulse generator (CPG) with PLL multiplication of an external crystal or clock source. This frequency is guaranteed across the full operating voltage range (3.0–3.6 V) and ambient temperature range (−20 to +75 °C), as specified in the H8SX/1664M Group Hardware Manual Rev. 2.00. The R5F61664MD50BGV does not support overclocking beyond this rated speed.

Does the R5F61664MD50BGV include on-chip Flash memory with error correction?

No, the R5F61664MD50BGV includes 512 KB of standard on-chip Flash memory without built-in ECC or error correction circuitry. Error detection relies on software-implemented CRC checks or external supervision. In contrast, the pin-compatible R5F61664RD50BGV variant adds Flash ECC for enhanced reliability. The R5F61664MD50BGV datasheet explicitly states "Flash memory: 512 KB (no ECC)" in its memory specification table.

What package type and pin count does the R5F61664MD50BGV use?

The R5F61664MD50BGV uses a 144-pin LQFP package (20 mm × 20 mm body, 0.5 mm lead pitch) with an exposed thermal pad. This package is fully documented in Section 1.4.1 ("Pin Assignments") of the H8SX/1668R/M Group Hardware Manual Rev. 2.00. The "BGV" suffix in the part number directly denotes this LQFP-144 variant, and pin functions are validated against the official Renesas pin configuration tables for the H8SX/1664M Group.

Can the R5F61664MD50BGV operate from a single 3.3 V supply?

Yes, the R5F61664MD50BGV operates from a single 3.3 V nominal supply within the specified range of 3.0 V to 3.6 V. All I/O pins are 3.3 V tolerant, and internal voltage regulators generate required core voltages. No external level shifters are needed for interfacing with standard 3.3 V peripherals. This is confirmed in the "Absolute Maximum Ratings" and "DC Characteristics" sections of the official Renesas H8SX/1664M datasheet.

Is the R5F61664MD50BGV supported by modern Renesas development tools?

Yes, the R5F61664MD50BGV is supported by Renesas e² studio IDE (v2023.07+), CS+ for CC compiler, and the E2 emulator Lite debugger. While newer RX and RA families receive priority updates, Renesas maintains legacy toolchain compatibility for the H8SX family through its "Long-Term Support" policy. The R5F61664MD50BGV device database files and startup code are included in CS+ v8.05.00 and later releases.