Renesas R5F61662N50LGV

Overview

R5F61662N50LGV from Renesas Electronics is a 32-bit CISC microcontroller in the H8SX/1662 Group, featuring a 50 MHz maximum CPU clock, 256 KB on-chip Flash memory, and integrated peripherals including TPU, SCI, WDT, and DTC for real-time industrial control applications.

For engineers reviewing the R5F61662N50LGV datasheet, R5F61662N50LGV pinout, R5F61662N50LGV application, or R5F61662N50LGV equivalent, key selection criteria include its 100-pin LQFP package, 3.3 V single-supply operation, -40°C to +85°C industrial temperature range, and support for H8SX architecture-based firmware migration and peripheral register compatibility within the H8SX/1662 family.

Technical Context

The R5F61662N50LGV implements the H8SX CPU core with three operating modes (Normal, Middle, Advanced), supports 32-bit addressing up to 4 GB, and integrates a Clock Pulse Generator (CPG) with PLL for flexible clock synthesis from external crystal or oscillator inputs.

It features a Bus Controller (BSC) supporting external memory expansion, an Interrupt Controller (INTC) with 128 interrupt sources, and a Data Transfer Controller (DTC) enabling autonomous data movement without CPU intervention-critical for deterministic response in motor control and PLC systems.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level MSL3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F61662N50FPV and R5F61665N50LGV, the R5F61662N50LGV provides optimal cost-performance balance for fixed-function industrial controllers where memory headroom and package size are constrained, while retaining full architectural compatibility for scalable design reuse.

Availability

R5F61662N50LGV is available at Aetrix Electronics and suitable for industrial automation, motor control, and building management systems requiring stable component supply across multi-year production cycles.

Supply support for R5F61662N50LGV 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 infrastructure markets.

The H8SX/1662 Group, including R5F61662N50LGV, was engineered for deterministic real-time control in resource-constrained industrial equipment-emphasizing peripheral integration, low-latency interrupt response, and long-term supply assurance.

FAQ

What is the maximum operating frequency of the R5F61662N50LGV?

The R5F61662N50LGV operates at a maximum CPU clock frequency of 50 MHz, achieved using its on-chip PLL with external crystal input (1–10 MHz). This frequency is specified under 3.3 V supply and -40°C to +85°C conditions per the H8SX/1665 Group Hardware Manual Rev. 2.00. The R5F61662N50LGV maintains full peripheral functionality-including TPU, SCI, and DTC-at this speed without derating.

Does the R5F61662N50LGV support in-system programming (ISP)?

Yes, the R5F61662N50LGV supports in-system programming via its on-chip debug interface (OCDS) using the Renesas E8a or E20 emulator. Firmware updates can be performed through the SCI boot mode or via user code executing Flash write/erase routines-both methods require adherence to the Flash memory timing and protection sequence defined in the R5F61662N50LGV hardware manual.

What is the Flash memory endurance and data retention specification for the R5F61662N50LGV?

The R5F61662N50LGV specifies 10,000 write/erase cycles for its 256 KB on-chip Flash memory and guarantees data retention of 20 years at +85°C or 100 years at +25°C. These values are measured per Renesas standard test conditions and apply to blocks programmed and erased according to the Flash control register sequence documented in the H8SX/1665 Group Hardware Manual.

Can the R5F61662N50LGV operate from a single 3.3 V supply?

Yes, the R5F61662N50LGV is designed for single 3.3 V ±0.3 V operation across its entire I/O and core voltage domains. It does not require separate analog or I/O supply rails. Internal regulators generate required core voltages, and all 80 I/O pins are 5 V tolerant only when configured as inputs with internal pull-ups enabled-output drive remains 3.3 V referenced.

Is the R5F61662N50LGV pin-compatible with other devices in the H8SX/1662 family?

Yes, the R5F61662N50LGV shares identical pin assignment, signal mapping, and electrical characteristics with other 100-pin LQFP variants in the H8SX/1662 Group, including R5F61662MxxxLGV. This allows direct substitution within the same package footprint, provided firmware accounts for differences in Flash size, RAM size, or peripheral enablement flags per device variant.