Renesas DF36012FXV

Overview

DF36012FXV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8/36012 Group, featuring the H8/300H CPU core, 128 KB on-chip ROM, 8 KB RAM, and integrated peripherals including SCI, I²C, timer modules, and 48 I/O pins. It operates at up to 20 MHz with 3.3 V or 5 V supply support and targets embedded control in industrial instrumentation and motor drive interfaces.

For engineers reviewing the DF36012FXV datasheet, DF36012FXV pinout, DF36012FXV application, or DF36012FXV equivalent, key selection considerations include its ROM size, clock source flexibility (crystal/ceramic/external), power-down mode support (Sleep/Standby/Subsleep), and compatibility with Renesas E7/E8 on-chip emulators for development.

Technical Context

The DF36012FXV implements the H8/300H CPU architecture with instruction set compatibility to the earlier H8/300, supporting 16-bit data paths and linear 24-bit addressing. Its system clock generator accepts crystal (1–20 MHz), ceramic resonator, or external clock inputs, and feeds prescaler S for peripheral timing derivation.

It integrates multiple low-power modes controlled via SYSCR1/SYSCR2 and module-level standby via MSTCR1/MSTCR2, enabling selective peripheral shutdown while retaining RAM content and wake-up capability via external interrupt or RTC alarm. The on-chip flash supports in-system programming via boot mode using SCI channel 1 (P21/P22).

Key Specifications

Pinout & Package

DF36012FXV is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined across eight 8-bit ports (P0–P7), plus dedicated reset, clock, interrupt, and debug pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with DF36012FXV, HD64F36012G offers identical functionality at lower qualification cost, while H8/36014F extends capability with CAN and doubled flash - both share the same 64-pin LQFP footprint and core architecture, enabling scalable design reuse.

Availability

DF36012FXV is available at Aetrix Electronics and suitable for industrial motor control interfaces, PLC I/O modules, and embedded test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for DF36012FXV 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 H8 Family - including the DF36012FXV - was designed for cost-sensitive, high-reliability embedded control applications demanding deterministic real-time performance, low-power operation, and robust on-chip debug capability.

FAQ

What is the maximum operating frequency of the DF36012FXV?

The DF36012FXV supports a maximum system clock frequency of 20 MHz. This is achieved using an external crystal, ceramic resonator, or clock source connected to the CLKIN pin, with internal prescaling applied as needed for peripheral modules. The CPU executes instructions at this rate, enabling sub-100 µs interrupt response times critical for real-time motor control loops. DF36012FXV maintains timing integrity across its full specified temperature range.

Does the DF36012FXV support in-system programming (ISP)?

Yes, the DF36012FXV supports in-system programming via its built-in SCI3 interface (P21/RXD, P22/TXD) in boot mode. This allows firmware updates without removing the device from the target board. The on-chip 128 KB flash memory includes dedicated control registers (FLMCR1/FLMCR2) and erase verification logic. DF36012FXV requires no external programming voltage - all operations use standard V_CC.

Which debug tools are compatible with the DF36012FXV?

The DF36012FXV is natively supported by Renesas E7 and E8 on-chip emulators. These tools provide real-time debugging, address breakpoint control, and trace capabilities. Note that the NMI pin and memory region H'7000–H'7FFF are reserved for emulator use and unavailable to the user application during debugging. DF36012FXV's hardware debug architecture eliminates the need for JTAG adapters or external probes.

What power-saving modes does the DF36012FXV offer?

The DF36012FXV provides three hardware-supported low-power modes: Sleep (CPU halted, peripherals active), Standby (CPU and most peripherals halted, RAM retained), and Subsleep (ultra-low leakage, RTC and LVI active). Mode entry is controlled via SYSCR1/SYSCR2 registers, and wake-up can occur via external interrupt, RTC alarm, or low-voltage interrupt. DF36012FXV achieves ≤1.2 µA in Subsleep mode with RTC running.

Is the DF36012FXV pin-compatible with other H8/360xx devices?

The DF36012FXV shares the same 64-pin LQFP package and core pinout with members of the H8/36012 and H8/36014 Groups, including HD64F36012G and H8/36014F. However, functional differences exist: H8/36014F adds CAN and extra SCI signals, requiring minor PCB routing changes. DF36012FXV is not pin-compatible with the H8/36024 Group due to differing peripheral allocations and memory map layouts.