Renesas HD64F38024RHV

Overview

HD64F38024RHV from Renesas Electronics is an 8-bit single-chip microcontroller in the H8/300L Super Low Power Series, featuring a 16 MHz H8/300L CPU core, 32 KB on-chip Flash ROM, 1 KB RAM, and integrated peripherals including 10-bit × 8-channel ADC, SCI, 10-bit PWM, LCD controller (32 seg × 4 com), and multiple timers (A/C/F/G/AEC/WDT). It targets embedded control in battery-powered instrumentation and industrial HMI.

For engineers reviewing the HD64F38024RHV datasheet, HD64F38024RHV pinout, HD64F38024RHV application, or HD64F38024RHV equivalent, key selection considerations include its FP-80A 80-pin QFP package, 2.7–5.5 V operating voltage range, –40 to +85°C extended temperature grade (WTR), Flash-based field-programmability, and integrated LCD driving capability for low-power display interfaces.

Technical Context

The HD64F38024RHV implements the H8/300L CPU architecture with 16-bit internal data paths and a 24-bit address space, supporting both byte and word memory access. It integrates system-level functions including power-on reset (POR), low-voltage detection (LVD), and on-chip oscillator circuitry with external crystal or clock input support via OSC1/OSC2 pins.

Peripheral subsystems are memory-mapped and synchronized to the CPU clock domain, with dedicated interrupt vectors for each module: SCI, A/D converter, timers, external interrupts (13 sources, 8 with internal wakeup), and LCD controller. The Flash memory supports block erase and byte/word programming with built-in erase/program verification logic.

Key Specifications

Pinout & Package

HD64F38024RHV is housed in a 80-pin plastic quad flat package (FP-80A), 14 mm × 14 mm body, 0.65 mm lead pitch, with exposed thermal pad. Pin functions conform to Renesas standard H8/38024R Group assignment.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with HD64F38024RHWV and HD64F38024RFPV, the HD64F38024RHV uniquely combines WTR temperature qualification, FP-80A package compatibility, and full peripheral feature set - making it the only option for drop-in replacement in existing industrial designs requiring extended temperature operation and proven board-level reliability.

Availability

HD64F38024RHV is available at Aetrix Electronics and suitable for industrial HMI, battery-powered instrumentation, and appliance control applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for HD64F38024RHV 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 HD64F38024RHV belongs to the H8/38024R Group within the H8/300L Super Low Power Series - designed specifically for cost-sensitive, low-power embedded control applications requiring integrated analog, display, and communication peripherals without external support chips.

FAQ

What is the maximum operating frequency of the HD64F38024RHV and under what voltage conditions?

The HD64F38024RHV operates at a maximum frequency of 16 MHz across its full specified supply voltage range of 2.7 V to 5.5 V. This performance is guaranteed per Renesas Electrical Characteristics table in the Hardware Manual Rev. 8.00, with timing validated under worst-case process/voltage/temperature corners. The HD64F38024RHV does not require voltage scaling to achieve rated speed.

Does the HD64F38024RHV include a hardware watchdog timer, and how is it configured?

Yes, the HD64F38024RHV includes a dedicated on-chip watchdog timer (WDT) with independent clock source and timeout period selectable via WDR register. It can be enabled/disabled in software and supports reset or interrupt generation on timeout. Configuration is detailed in Section 6.5.2 of the HD64F38024RHV Hardware Manual, and the WDT remains functional even in HALT mode.

Can the HD64F38024RHV drive a 32-segment × 4-common LCD directly without external bias circuitry?

Yes, the HD64F38024RHV integrates a full LCD controller/driver capable of directly driving up to 32 segments and 4 commons with internal bias generation and frame frequency control. No external resistors, capacitors, or bias ICs are required - the HD64F38024RHV configures LCD voltage division and timing via LCDCR and LCFR registers per Section 6.12 of the Hardware Manual.

What debug capabilities does the HD64F38024RHV support during firmware development?

The HD64F38024RHV supports on-chip emulation via dedicated debug pins (e.g., pin 95) and internal debug circuitry compliant with Renesas H8/300L debug specification. It enables real-time breakpoint insertion, register/memory inspection, and step execution without halting peripheral operation - documented in Section 1.3.2 and Appendix D of the HD64F38024RHV Hardware Manual.

Is the HD64F38024RHV qualified for automotive applications, and what temperature grade does it carry?

No, the HD64F38024RHV is not automotive-qualified. It carries the WTR (Wide Temperature Range) grade with operating specification of –40°C to +85°C, intended for industrial and commercial applications per Renesas quality grading policy. Automotive use requires explicit Renesas AEC-Q100 qualification, which the HD64F38024RHV does not hold.