Renesas HD64F36024FPV

Overview

HD64F36024FPV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8/36024 Group, featuring an H8/300H CPU core with 24 MHz max operating frequency, 128 KB on-chip ROM, 8 KB RAM, and integrated peripherals including UART, timer modules, and I/O ports. It serves as a system controller in industrial control panels requiring deterministic real-time response and embedded firmware execution.

For engineers reviewing the HD64F36024FPV datasheet, HD64F36024FPV pinout, HD64F36024FPV application, or HD64F36024FPV equivalent, key selection considerations include its 100-pin LQFP package, 3.3 V supply operation, flash memory programmability via on-board programming (OBP), and support for sleep/subsleep power-down modes in resource-constrained environments.

Technical Context

The HD64F36024FPV implements the H8/300H CPU architecture with full instruction set compatibility to the earlier H8/300, enabling legacy code reuse. It integrates a system clock generator supporting crystal, ceramic resonator, or external clock input, and includes prescaler S for deriving peripheral clocks from the main system clock.

Exception handling is managed through dedicated registers including IEGR1/IEGR2 for edge-selectable external interrupts, IENR1 for interrupt enable control, and IRR1 for flag status. The device supports reset, NMI, and multiple maskable interrupts with vectorized handling and configurable response timing.

Key Specifications

Pinout & Package

HD64F36024FPV is housed in a 100-pin LQFP package (JEDEC MS-026AC). Pin functions are defined per the Hardware Manual Rev.4.00 (2005), with dedicated pins for reset, clock input, NMI, and multiplexed I/O grouped by port (Port A–G, Port J).

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F36024FPV, HD64F36022FPV trades RAM capacity for cost savings while maintaining full software and hardware compatibility, whereas HD64F36024GFPV offers identical functionality with enhanced thermal and reliability validation for mission-critical deployments.

Availability

HD64F36024FPV is available at Aetrix Electronics and suitable for industrial control panels, building automation systems, and test instrumentation requiring stable component supply, long-term obsolescence planning, and consistent firmware development toolchain support.

Supply support for HD64F36024FPV 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The H8 Family/H8/300H Tiny Series - including HD64F36024FPV - was designed for cost-sensitive, real-time embedded applications demanding high integration, low power, and deterministic interrupt response in space-constrained designs.

FAQ

What is the maximum system clock frequency supported by HD64F36024FPV?

The HD64F36024FPV supports a maximum operating frequency of 24 MHz when driven by an external crystal, ceramic resonator, or clock source. This frequency defines the upper limit for instruction execution speed, peripheral timing resolution, and UART baud rate generation. Exceeding this rating may cause timing violations or unstable operation. The HD64F36024FPV datasheet specifies that clock stability and jitter must remain within ±1% for reliable CPU and flash access.

Does HD64F36024FPV support in-system programming without external hardware?

Yes, HD64F36024FPV supports on-board programming (OBP) via its built-in SCI interface in boot mode, allowing flash memory programming and erasure directly from a host PC or master controller without an external programmer. This capability requires correct boot pin configuration and adherence to the OBP command protocol defined in the Hardware Manual. HD64F36024FPV retains full OBP functionality even after initial firmware deployment.

What power-down modes are available on HD64F36024FPV and how do they differ?

HD64F36024FPV offers three power-down modes: Sleep (CPU halted, peripherals active), Standby (CPU and most peripherals halted, RAM retained), and Subsleep (deep idle with ultra-low current draw and fast wake-up). Each mode is controlled via SYSCR1/SYSCR2 registers and differs in wake-up sources, latency, and current consumption - e.g., Subsleep draws <10 µA and wakes in ≤4 µs via external interrupt. HD64F36024FPV's mode selection enables fine-grained energy optimization in battery-powered systems.

Is HD64F36024FPV pin-compatible with other members of the H8/36024 Group?

Yes, HD64F36024FPV shares identical pinout and package (100-pin LQFP) with all variants in the H8/36024 Group, including HD64F36024GFPV and HD64F36022FPV. This allows direct PCB reuse across firmware variants differing only in memory size or quality grade. However, functional differences - such as RAM size or temperature rating - must be validated in the target application. HD64F36024FPV's pin mapping remains consistent across these variants per Renesas Hardware Manual Rev.4.00.

What is the role of the NMI pin on HD64F36024FPV and can it be used in production systems?

The NMI pin on HD64F36024FPV is reserved for on-chip emulator (E7/E8) debug use and cannot be repurposed as a general-purpose non-maskable interrupt input in production systems. When the E7 or E8 emulator is connected, NMI operates as an open-drain I/O for emulator handshake; otherwise, its behavior is undefined. For production interrupt handling, designers must use maskable external interrupts (IRQ0–IRQ7) configured via IEGR1/IEGR2. HD64F36024FPV's NMI pin is not intended for end-user application logic.