Renesas DF70844AN80FPV

Overview

DF70844AN80FPV from Renesas Electronics is a 32-bit RISC microcontroller in the SH7084 Group, featuring the SuperH™ CPU core, 512 KB on-chip Flash memory, 32 KB RAM, and integrated peripherals including CPG, INTC, UBC, and serial interfaces. It operates at up to 33 MHz and targets industrial control and embedded instrumentation applications requiring deterministic real-time response.

For engineers reviewing the DF70844AN80FPV datasheet, DF70844AN80FPV pinout, DF70844AN80FPV application, or DF70844AN80FPV equivalent, key selection criteria include its 80-pin LQFP package, 3.3 V single-supply operation, Flash memory endurance (10,000 write/erase cycles), on-chip debug support via JTAG, and compliance with industrial temperature range (−40°C to +85°C).

Technical Context

The DF70844AN80FPV implements the SH-2 CPU architecture with 32-bit data/address buses, 16 general-purpose registers, and a 3-stage pipeline. It integrates a Clock Pulse Generator (CPG) supporting crystal/resonator input (1–20 MHz) and internal PLL for scalable system clock derivation.

Its interrupt subsystem includes a 16-level priority Interrupt Controller (INTC) with 64 vector sources, and the User Break Controller (UBC) provides hardware breakpoints for on-chip debugging without code instrumentation. Memory mapping supports single-chip mode with unified address space for Flash, RAM, and peripheral registers.

Key Specifications

Pinout & Package

DF70844AN80FPV is housed in an 80-pin LQFP package (12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per SH7084 Group Hardware Manual Rev.6.00, Section 1.3 (Pin Assignments) and Section 1.4 (Pin Functions).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F70844ADFPV and SH7084B, DF70844AN80FPV offers optimal balance of memory size, debug capability, and industrial package compatibility - making it the preferred choice for new 80-pin LQFP-based designs requiring field-upgradable firmware and robust real-time control.

Availability

DF70844AN80FPV is available at Aetrix Electronics and suitable for industrial PLC modules, factory HMI panels, and energy meter concentrators requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for DF70844AN80FPV 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 SH7084 Group - including DF70844AN80FPV - was designed for cost-sensitive, high-reliability industrial control applications requiring deterministic real-time performance, on-chip debug, and extended temperature operation without external memory.

FAQ

What is the maximum operating frequency of the DF70844AN80FPV?

The DF70844AN80FPV operates at a maximum frequency of 33 MHz, achieved via its integrated Clock Pulse Generator (CPG) with PLL. This frequency is validated across the full industrial temperature range (−40°C to +85°C) and 3.3 V supply, enabling consistent real-time performance in embedded control applications without external clock synthesis.

Does the DF70844AN80FPV support in-circuit debugging?

Yes, the DF70844AN80FPV supports full in-circuit debugging via its IEEE 1149.1-compliant JTAG interface (TMS, TDI, TDO, TCK pins). It also includes the User Break Controller (UBC) with two hardware breakpoints, allowing non-intrusive code inspection, step-through execution, and flash programming without modifying application firmware.

What memory resources are integrated into the DF70844AN80FPV?

The DF70844AN80FPV integrates 512 KB of on-chip Flash memory (rated for 10,000 write/erase cycles) and 32 KB of SRAM. The Flash includes security lock bits to prevent unauthorized firmware extraction, and both memory blocks are mapped into a unified 32-bit address space accessible by the SH-2 CPU core.

Is the DF70844AN80FPV pin-compatible with other SH7084 variants?

DF70844AN80FPV shares the same 80-pin LQFP package and pin assignment with other SH7084 Group members rated for the same package (e.g., DF70842AN80FPV), but is not pin-compatible with 100-pin variants like R5F70844ADFPV. Always verify pin function mapping against the SH7084 Group Hardware Manual Rev.6.00 for exact signal routing.

What industrial temperature range does the DF70844AN80FPV support?

The DF70844AN80FPV is specified for operation across the industrial temperature range of −40°C to +85°C. This rating is confirmed in the SH7080 Group Hardware Manual Rev.6.00, Section 8 (Electrical Characteristics), and applies to all DC and AC parameters including Flash write timing, RAM retention, and peripheral functionality.