Renesas DF36079LFZV

Overview

DF36079LFZV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8/36079 Group, featuring the H8/300H CPU core with instruction set compatibility to H8/300, 128 KB on-chip ROM, 8 KB RAM, and integrated peripherals including 3-channel SCI, 2-channel timer PWM, and 10-bit ADC with 8 input channels - deployed in industrial control panels requiring deterministic real-time response.

For engineers reviewing the DF36079LFZV datasheet, DF36079LFZV pinout, DF36079LFZV application, or DF36079LFZV equivalent, this page delivers verified package mapping (LQFP-100), confirmed pin functions per Hardware Manual Rev.3.00, functional role in embedded control systems, and two validated alternative MCUs for migration paths in legacy H8-based designs.

Technical Context

The DF36079LFZV implements the H8/300H CPU core operating at up to 20 MHz, with on-chip clock pulse generator supporting internal RC oscillator (trimmed to ±1% accuracy), external crystal (1–10 MHz), or external clock input. It integrates system control modules including low-voltage detection, watchdog timer, and reset controller.

Peripheral integration includes three serial communication interfaces (SCI) with asynchronous/full-duplex operation, two 16-bit timer units supporting PWM output and input capture, and an 8-channel 10-bit successive-approximation ADC with sample-and-hold - all mapped to dedicated I/O ports with configurable pull-up/pull-down and drive strength.

Key Specifications

Pinout & Package

LQFP-100 package (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, with exposed thermal pad - provides mechanical stability and thermal dissipation for continuous operation in ambient temperatures up to +85°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with DF36079LFZV, R5F366TAADFP offers significantly higher compute throughput and integrated motor control IP but requires full toolchain migration, while H8/3694F retains binary compatibility and pinout but sacrifices memory and peripheral headroom - making it ideal for incremental cost optimization.

Availability

DF36079LFZV is available at Aetrix Electronics and suitable for industrial motor control, building automation panels, and factory test fixtures requiring stable component supply and long-term lifecycle support.

Supply support for DF36079LFZV 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 DF36079LFZV belongs to the H8/36079 Group - a family of 16-bit microcomputers designed for deterministic real-time control in cost-sensitive industrial equipment where reliability, code density, and peripheral integration outweigh raw performance.

FAQ

What is the maximum operating frequency of the DF36079LFZV?

The DF36079LFZV operates at a maximum frequency of 20 MHz, delivering approximately 10 MIPS of processing performance. This frequency is supported by both the internal trimmed RC oscillator and external crystal or clock sources. The actual achievable speed depends on supply voltage and ambient temperature, with full specification guaranteed across the 3.0 V to 5.5 V range and −40°C to +85°C operating temperature.

Does the DF36079LFZV include on-chip flash or ROM memory?

The DF36079LFZV features 128 KB of on-chip mask-programmed ROM and 8 KB of SRAM. It does not include reprogrammable flash memory; firmware is permanently embedded during manufacturing. This architecture ensures immunity to accidental overwrite and meets requirements for safety-critical or tamper-resistant applications where code integrity is mandatory.

Can the DF36079LFZV operate without an external crystal?

Yes, the DF36079LFZV can operate using its internal RC oscillator, which is factory-trimmed to ±1% accuracy at 25°C and supports runtime adjustment via the RCTRMDR register. This eliminates the need for external timing components in applications where moderate clock precision suffices, such as basic motor sequencing or sensor polling.

What peripheral interfaces are integrated into the DF36079LFZV?

The DF36079LFZV integrates three asynchronous serial communication interfaces (SCI), two 16-bit timer units with PWM and input capture capability, an 8-channel 10-bit ADC, a watchdog timer, low-voltage detection circuitry, and a clock pulse generator. All peripherals are register-mapped and accessible via memory-mapped I/O space with documented interrupt vectors.

Is the DF36079LFZV pin-compatible with other H8/36079 variants?

Yes, the DF36079LFZV shares the same LQFP-100 package and pinout with other members of the H8/36079 Group, including the DF36079GF and HD64F36079L. Differences between variants relate to memory configuration, operating voltage range, and temperature grade - not pin assignment or electrical characteristics - enabling drop-in substitution within the same package variant.