Renesas DF38524HV

Overview

DF38524HV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8/300H Super Low Power Series, featuring 32 KB Flash memory, 1 KB RAM, and operation at up to 20 MHz across 2.7–5.5 V supply. It integrates UART/Synchronous SCI, 10-bit × 8-channel ADC, LCD controller (32 seg × 4 com), and multiple timers including WDT, Timer A/C/F/G, for embedded control in battery-powered instrumentation.

For engineers reviewing the DF38524HV datasheet, DF38524HV pinout, DF38524HV application, or DF38524HV equivalent, key selection considerations include its FP-80A package, −40°C to +85°C wide-temperature rating (WTR), integrated LCD driver with static/dynamic support, and dual-voltage operation enabling compatibility with both 3.3 V and 5 V system rails.

Technical Context

The DF38524HV implements the H8/300H CPU core with 16-bit data bus and 24-bit address space, supporting 20 MHz maximum clock frequency via internal PLL or external crystal. Its peripheral set includes one UART/Synchronous SCI channel, eight 10-bit ADC input channels with sample-and-hold, and a programmable LCD controller supporting up to 128 segments.

Power management features include low-voltage detection (LVD), power-on reset (POR), and multiple sleep modes (HALT, STOP, WAIT) with wake-up capability via 13 external interrupt sources. The device supports in-circuit debugging via on-chip debug interface and flash programming via serial interface.

Key Specifications

Pinout & Package

DF38524HV is housed in an 80-pin FP-80A plastic flat-pack package with 0.65 mm lead pitch, designed for surface-mount assembly and thermal reliability in industrial PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DF38524HV, R5F38524MFP offers identical functionality in a finer-pitch package but lacks wide-temperature qualification, while H8/38523 provides pin-compatible scaling down in memory resources - both require no schematic change but differ in thermal and storage capacity margins.

Availability

DF38524HV is available at Aetrix Electronics and suitable for handheld test equipment, industrial panel meters, and smart energy meters requiring stable component supply, long-term lifecycle support, and wide-temperature operation.

Supply support for DF38524HV 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 H8/38524 Group belongs to Renesas' legacy H8 Family of 16-bit MCUs, designed specifically for cost-sensitive, low-power embedded applications requiring integrated analog peripherals and LCD driving capability.

FAQ

What is the maximum operating frequency of the DF38524HV?

The DF38524HV operates at a maximum frequency of 20 MHz, achievable using either an external crystal (1–20 MHz) connected to XTAL/EXTAL pins or an internal PLL configured via system control registers. This clock rate applies across the full 2.7–5.5 V supply range and −40°C to +85°C temperature range, as verified in the H8/38524 Group Hardware Manual Rev. 1.00.

Does the DF38524HV support in-system programming of its Flash memory?

Yes, the DF38524HV supports in-system programming (ISP) of its 32 KB on-chip Flash memory via the on-chip serial interface (CSI) or dedicated programming pins. Renesas provides official programming algorithms and tools, and the DF38524HV datasheet confirms that Flash can be reprogrammed without removal from the target board - essential for field firmware updates.

What LCD configurations does the DF38524HV support?

The DF38524HV's integrated LCD controller supports static and dynamic drive modes with up to 32 segments and 4 commons, enabling alphanumeric displays up to 128 segments (32 × 4). It includes internal bias generation, software-controllable duty cycle, and frame frequency control - all documented in Section 12 of the H8/38524 Group Hardware Manual.

Is the DF38524HV pin-compatible with other devices in the H8/38524 Group?

Yes, the DF38524HV is pin-compatible with other members of the H8/38524 Group, including H8/38523, H8/38522, H8/38521, and H8/38520, all sharing the same FP-80A or TFP-80C 80-pin package and identical pin assignments. This allows hardware reuse across variants differing only in memory size and feature enablement.

What debug interface does the DF38524HV provide?

The DF38524HV includes an on-chip debug interface compliant with Renesas' single-wire debug (SWD) protocol, supporting real-time execution control, register and memory access, breakpoint setting, and flash programming. This interface requires only two pins (debug clock and I/O) and is fully supported by Renesas E1/E20 emulators and CS+ IDE - no external JTAG adapter needed.