Renesas DE70865RN80FPV

Overview

DE70865RN80FPV from Renesas Electronics is a 32-bit RISC microcontroller in the SH7086 Group, featuring the SuperH™ CPU core, 512 KB on-chip Flash memory, 32 KB RAM, and integrated peripherals including CPG, INTC, UBC, and multiple serial interfaces. It operates at up to 40 MHz and targets industrial control and embedded instrumentation applications requiring deterministic real-time response.

For engineers reviewing the DE70865RN80FPV datasheet, DE70865RN80FPV pinout, DE70865RN80FPV application, or DE70865RN80FPV equivalent, key selection criteria include Flash/RAM capacity, clock frequency support, peripheral integration (e.g., UART, I²C, timer modules), and compliance with industrial-grade operating temperature (−40°C to +85°C) and supply voltage (3.0 V to 3.6 V).

Technical Context

The DE70865RN80FPV implements the SuperH RISC engine architecture with 32-bit data path, 32 general-purpose registers, and a 32-bit address space. It supports four MCU operating modes (including Single Chip Mode) and features a programmable Clock Pulse Generator (CPG) with FRQCR register control for dynamic frequency scaling between 1 MHz and 40 MHz.

Interrupt handling is managed by a dedicated Interrupt Controller (INTC) supporting 64 interrupt sources with priority levels assigned via IPRA–IPRM registers. Exception vectors are located in on-chip ROM, and the User Break Controller (UBC) provides hardware breakpoint capability for debugging via BARA/BARB and BAMRA/BAMRB registers.

Key Specifications

Pinout & Package

DE70865RN80FPV is housed in an 80-pin LQFP package (12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions include multiplexed I/O (e.g., P0–P15 ports), dedicated clock inputs (EXTAL/XTAL), reset (RES#), interrupt request lines (IRQ0–IRQ7), and peripheral-specific signals (e.g., RXD0/TXD0, SDA/SCL).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F70865RDFP and SH7086T3000, DE70865RN80FPV delivers the best balance of debug capability (UBC), real-time performance (40 MHz), and industrial reliability in an 80-pin LQFP - making it the preferred choice for new designs targeting compact, high-integrity embedded control.

Availability

DE70865RN80FPV is available at Aetrix Electronics and suitable for industrial PLC I/O modules, factory automation HMIs, energy meter concentrators, and building HVAC controllers requiring stable component supply across multi-year production cycles.

Supply support for DE70865RN80FPV 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 SH7086 Group - including DE70865RN80FPV - was designed specifically for deterministic real-time control in industrial equipment, emphasizing robust exception handling, hardware debug, and long-lifecycle support under harsh environmental conditions.

FAQ

What is the maximum clock frequency supported by the DE70865RN80FPV?

The DE70865RN80FPV supports a maximum operating frequency of 40 MHz. This is achieved using the on-chip Clock Pulse Generator (CPG) with external crystal (up to 20 MHz) and internal PLL multiplication. At 40 MHz, the device delivers ≤25 ns instruction cycle time, enabling tight real-time control loops in applications such as motor drive supervision and high-speed I/O scanning. The FRQCR register allows dynamic adjustment of the system clock divisor during runtime.

Does the DE70865RN80FPV include hardware debug capability?

Yes, the DE70865RN80FPV integrates a User Break Controller (UBC) with two independent hardware breakpoint channels (BARA/BARB and associated mask/control registers). This enables non-intrusive code execution monitoring, address-matched break conditions, and bus-cycle-qualified triggers - essential for validating firmware in safety-critical industrial systems without altering timing behavior. The UBC is fully documented in Section 7 of the SH7080 Group Hardware Manual.

What memory resources are integrated into the DE70865RN80FPV?

The DE70865RN80FPV integrates 512 KB of on-chip Flash memory organized in 1 KB sectors for flexible firmware updates, and 32 KB of SRAM for stack, heap, and real-time data buffering. Both memories are directly accessible by the CPU without wait states at maximum frequency. The Flash supports single-voltage programming (3.3 V) and includes error correction logic for enhanced reliability in industrial deployments.

Which communication peripherals are available on the DE70865RN80FPV?

The DE70865RN80FPV includes three UART channels (supporting asynchronous serial with optional auto-baud detection), one I²C interface (standard/fast-mode), eight 16-bit general-purpose timers (with input capture, output compare, and PWM generation), and a watchdog timer. These peripherals are mapped to multiplexed GPIO pins (e.g., P1_0/P1_1 for UART0), allowing flexible board-level routing without external signal translators.

What is the operating temperature and supply voltage range for the DE70865RN80FPV?

The DE70865RN80FPV is rated for industrial operation from −40°C to +85°C ambient temperature and requires a supply voltage of 3.0 V to 3.6 V. This specification aligns with Renesas' "Standard" quality grade, qualifying the device for use in factory automation, energy infrastructure, and building management systems - but excluding safety-critical transportation or medical applications per Renesas' product classification notice.