Renesas DF70844AD80FPV

Overview

DF70844AD80FPV 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 DF70844AD80FPV datasheet, DF70844AD80FPV pinout, DF70844AD80FPV application, or DF70844AD80FPV equivalent, key selection criteria include Flash/RAM capacity, clock frequency support (up to 33 MHz), operating voltage range (3.0–3.6 V), package type (128-pin LQFP), and peripheral integration (e.g., 3-channel UART, 16-bit timer units, 10-bit ADC).

Technical Context

The DF70844AD80FPV implements the SuperH RISC engine with 32-bit data path, 32 general-purpose registers, and a 3-stage pipeline. 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 33 MHz.

Interrupt handling is managed by a dedicated Interrupt Controller (INTC) supporting 64 interrupt sources with priority levels configurable via IPR registers. The User Break Controller (UBC) provides hardware-assisted debugging with two independent break address comparators and bus-cycle condition detection.

Key Specifications

Pinout & Package

DF70844AD80FPV is housed in a 128-pin LQFP (20 mm × 20 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow SH7084 Group standard layout, supporting single-chip operation with internal oscillator circuitry and configurable boot mode selection via pins MD0–MD2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DF70844AD80FPV, R5F70844ADFPV offers broader temperature tolerance without functional trade-offs, while SH7084F20A reduces memory and package size at the expense of firmware headroom and peripheral buffer depth - both require review of thermal and memory allocation constraints before substitution.

Availability

DF70844AD80FPV is available at Aetrix Electronics and suitable for industrial automation, smart sensor systems, and motor control applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for DF70844AD80FPV 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 manufacturer specializing in microcontrollers, analog, and power solutions for industrial, automotive, and infrastructure markets.

The SH7084 Group - including DF70844AD80FPV - was designed for deterministic real-time embedded control in resource-constrained industrial equipment, emphasizing low-latency interrupt response, on-chip memory integration, and robust peripheral sets for sensor interfacing and actuator driving.

FAQ

What is the maximum clock frequency supported by DF70844AD80FPV?

The DF70844AD80FPV supports a maximum operating frequency of 33 MHz. This is achieved using the on-chip Clock Pulse Generator (CPG) with an external crystal (1–10 MHz) and internal PLL multiplication. At 33 MHz, the CPU executes instructions with a 30.3 ns cycle time, enabling sub-microsecond response in time-critical control loops. The DF70844AD80FPV datasheet specifies this limit under 3.0–3.6 V supply and industrial temperature conditions.

Does DF70844AD80FPV include on-chip Flash memory, and what is its size and organization?

Yes, DF70844AD80FPV integrates 512 KB of on-chip Flash memory organized in 1 KB sectors. This allows granular erase operations and in-application programming (IAP) without external memory. The Flash supports read-while-write (RWW) in certain configurations and includes lock bits for security. The DF70844AD80FPV uses this memory for firmware storage, bootloader, and configuration data - eliminating need for external NOR Flash in most embedded control designs.

What peripheral interfaces are integrated into DF70844AD80FPV?

DF70844AD80FPV integrates UART (3 channels), 10-bit ADC (8 channels), 16-bit timers (3 units), Clock Pulse Generator (CPG), Interrupt Controller (INTC), and User Break Controller (UBC). It also supports external bus interface for memory expansion. These peripherals are directly memory-mapped and controlled via dedicated registers documented in the SH7080 Group Hardware Manual. No external glue logic is required to implement basic sensor acquisition, motor control, or serial communication functions with DF70844AD80FPV.

What is the operating temperature range for DF70844AD80FPV?

The DF70844AD80FPV is specified for operation from −20°C to +75°C ambient temperature. This qualifies it for use in commercial and light industrial environments such as indoor control panels, test equipment, and consumer-grade instrumentation. For applications requiring extended temperature operation (e.g., outdoor enclosures or uncooled cabinets), the pin-compatible R5F70844ADFPV variant - rated from −40°C to +85°C - should be selected instead of DF70844AD80FPV.

How is debug functionality implemented in DF70844AD80FPV?

DF70844AD80FPV implements hardware-assisted debugging via the User Break Controller (UBC), which provides two independent breakpoint units with address masking, data value matching, and bus-cycle qualification (e.g., read/write/execute). Breakpoints trigger CPU halting without software intervention, enabling precise code inspection during development. The DF70844AD80FPV does not include JTAG or SWD; debugging relies on UBC combined with on-chip ROM monitor or external emulator support through the SH-DSP interface.