Renesas DF70855AD80FPV#ZB

Overview

DF70855AD80FPV#ZB from Renesas Electronics is a 32-bit RISC microcontroller in the SH7085 subgroup of the SH7080 family, 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 DF70855AD80FPV#ZB datasheet, DF70855AD80FPV#ZB pinout, DF70855AD80FPV#ZB application, or DF70855AD80FPV#ZB equivalent, key selection criteria include its 128-pin LQFP package, 3.3 V supply operation, Flash memory endurance (10,000 write/erase cycles), interrupt latency under 1.5 µs, and support for single-chip mode with external bus interface disabled.

Technical Context

The DF70855AD80FPV#ZB implements the SH-2 CPU architecture with 32-bit data path, 32 general-purpose registers, and a 2-stage pipeline. It integrates a Clock Pulse Generator (CPG) supporting crystal/resonator input (4–20 MHz) and internal PLL multiplication to achieve stable 40 MHz system clock.

Its interrupt subsystem includes a 16-level priority programmable Interrupt Controller (INTC) with 64 vector sources, and the User Break Controller (UBC) provides two independent hardware breakpoints with address masking and bus-cycle condition detection - critical for debug in safety-critical firmware development.

Key Specifications

Pinout & Package

DF70855AD80FPV#ZB is housed in a 128-pin LQFP (Plastic Low-profile Quad Flat Package) with 0.5 mm lead pitch, 20 mm × 20 mm body size, and exposed thermal pad. Pin assignment follows SH7085 Group standard layout per R01UH0198EJ0600 Rev.6.00 Section 1.3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F70855ADFPV#30 and SH7085F20A, DF70855AD80FPV#ZB offers verified industrial-grade reliability at +85°C, current production status, and optimized thermal pad layout for improved solder joint integrity in high-vibration environments.

Availability

DF70855AD80FPV#ZB is available at Aetrix Electronics and suitable for industrial automation, building management systems, and motor control applications requiring stable component supply across multi-year production cycles.

Supply support for DF70855AD80FPV#ZB 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, and power devices for industrial, automotive, and infrastructure markets.

The SH7080 Group - including DF70855AD80FPV#ZB - was designed for deterministic real-time embedded control in resource-constrained industrial equipment, emphasizing low-latency interrupt response, on-chip debug capability, and long-term supply stability.

FAQ

What is the maximum system clock frequency supported by DF70855AD80FPV#ZB?

The DF70855AD80FPV#ZB supports a maximum system clock frequency of 40 MHz, achieved via its integrated Clock Pulse Generator (CPG) using an external 4–20 MHz crystal resonator and internal PLL multiplication. This frequency is guaranteed across the full −40°C to +85°C operating temperature range and 3.0–3.6 V supply voltage, enabling consistent real-time performance in industrial environments.

Does DF70855AD80FPV#ZB include on-chip Flash memory, and what is its endurance rating?

Yes, DF70855AD80FPV#ZB integrates 512 KB of on-chip Flash memory with an endurance rating of 10,000 write/erase cycles and data retention of 20 years at 85°C. This Flash supports in-application programming (IAP), allowing field firmware updates without external programmers - a key requirement for remote industrial device maintenance.

Is DF70855AD80FPV#ZB pin-compatible with other SH7085 variants such as R5F70855ADFPV#30?

Yes, DF70855AD80FPV#ZB is pin-compatible with R5F70855ADFPV#30, sharing identical 128-pin LQFP mechanical footprint and signal mapping. However, R5F70855ADFPV#30 is rated for −40°C to +105°C and features a modified thermal pad structure; thermal and reliability validation is required if substituting in high-temperature applications.

What debug capabilities does DF70855AD80FPV#ZB provide for firmware development?

DF70855AD80FPV#ZB includes a User Break Controller (UBC) with two independent hardware breakpoints, each configurable for address match, data value comparison, and bus-cycle type (read/write/execute). This enables non-intrusive, cycle-accurate firmware validation - essential for developing safety-critical control logic without perturbing real-time behavior.

Which communication interfaces are integrated into DF70855AD80FPV#ZB?

DF70855AD80FPV#ZB integrates three Serial Communication Interfaces (SCI), one CAN 2.0B controller, one I²C bus interface, and a 10-bit 8-channel ADC with programmable sampling. These peripherals support simultaneous multi-protocol connectivity - for example, CAN for motor drive coordination, SCI for HMI communication, and I²C for sensor hub expansion - without external bridge ICs.