Renesas DF70835AD80FTV

Overview

DF70835AD80FTV from Renesas Electronics is a 32-bit RISC microcontroller in the SH7083 group, featuring the SuperH™ CPU core, 512 KB on-chip Flash memory, 32 KB RAM, and integrated peripherals including UART, CAN, I²C, and 10-bit ADC. It operates at up to 40 MHz and targets industrial control and embedded automation systems requiring deterministic real-time response.

For engineers reviewing the DF70835AD80FTV datasheet, DF70835AD80FTV pinout, DF70835AD80FTV application, or DF70835AD80FTV equivalent, key selection criteria include Flash/RAM size, CAN 2.0B support, operating voltage range (3.0–3.6 V), and QFP-144 package compatibility with legacy SH708x designs.

Technical Context

The DF70835AD80FTV implements the SuperH RISC engine with 32-bit data path, 32 general-purpose registers, and a 5-stage pipeline. It supports three exception modes (reset, interrupt, trap) and features an on-chip Clock Pulse Generator (CPG) enabling software-selectable clock division ratios (1/1 to 1/8) from a 4–20 MHz crystal input.

Its interrupt controller (INTC) provides 128 vector sources with programmable priority levels (0–15), while the User Break Controller (UBC) enables hardware breakpoints for debugging without code instrumentation. The device includes a 10-bit, 16-channel ADC with conversion time of 1.2 μs and sample-and-hold capability.

Key Specifications

Pinout & Package

DF70835AD80FTV is housed in a 144-pin Low-Profile Quad Flat Package (LQFP) with 0.5 mm lead pitch and 20 mm × 20 mm body size. Thermal pad exposed on underside for enhanced heat dissipation in high-duty-cycle applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F70835ADFP and SH7269RBR, DF70835AD80FTV delivers optimal balance of CAN integration, industrial temperature support, and compact 144-pin LQFP packaging - making it the preferred choice for space-constrained, CAN-centric embedded controllers where full SH-2A performance is unnecessary.

Availability

DF70835AD80FTV is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and smart energy meter designs requiring stable component supply across multi-year production cycles.

Supply support for DF70835AD80FTV 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The SH7083 group - including DF70835AD80FTV - was designed for cost-sensitive, real-time embedded applications demanding CAN connectivity, analog sensing, and deterministic interrupt response in harsh environments.

FAQ

What is the maximum operating frequency of the DF70835AD80FTV?

The DF70835AD80FTV operates at a maximum CPU frequency of 40 MHz, achieved using its on-chip Clock Pulse Generator (CPG) with PLL-based clock multiplication. This frequency is guaranteed across the full industrial temperature range (−40°C to +85°C) and 3.0–3.6 V supply voltage. The DF70835AD80FTV's timing specifications - including instruction cycle time and peripheral response latencies - are validated at this speed in Renesas' official electrical characteristics tables.

Does the DF70835AD80FTV support CAN FD or only classical CAN 2.0B?

The DF70835AD80FTV integrates a single CAN controller compliant exclusively with ISO 11898-1:2003 (CAN 2.0B), supporting both standard (11-bit) and extended (29-bit) identifiers with bit rates up to 1 Mbps. It does not implement CAN FD features such as flexible data-rate, longer payloads, or CRC enhancements. For CAN FD functionality, designers must select newer Renesas RA or RH850 families - the DF70835AD80FTV's CAN peripheral is fixed to classical CAN protocol.

Is the DF70835AD80FTV pin-compatible with other SH708x series MCUs like the SH7084 or SH7085?

No, the DF70835AD80FTV is not pin-compatible with SH7084 or SH7085 variants. Although all belong to the SH7080 Group and share the same 144-pin LQFP package outline, pin functions differ significantly - especially for peripheral signals (e.g., CAN, UART, timer outputs) and power domains. Renesas explicitly states in the Hardware Manual that "pin assignments vary between SH7083/SH7084/SH7085/SH7086" and requires individual schematic validation. Migration requires PCB redesign.

What debug interfaces does the DF70835AD80FTV support?

The DF70835AD80FTV supports on-chip debugging exclusively via its User Break Controller (UBC), which provides two independent hardware breakpoints for address and data access monitoring. It does not include JTAG or SWD interfaces. Debugging requires Renesas E1/E20 emulators connected through the dedicated UBC pins (UBA0–UBA1, UBD0–UBD1), and relies on the UBC's trigger logic rather than standard ARM-style debug protocols.

Can the DF70835AD80FTV's Flash memory be programmed in-system without a dedicated programmer?

Yes, the DF70835AD80FTV supports in-system programming (ISP) of its 512 KB Flash memory using on-chip boot ROM routines accessible via UART0. Firmware updates can be performed in the field by sending Intel HEX or binary images over serial, with checksum verification and erase/write sequencing handled entirely by internal firmware. No external programmer or debug probe is required for basic ISP operations - the DF70835AD80FTV executes the entire process autonomously.