Renesas M38039FFLHP#U0

Overview

M38039FFLHP#U0 from Renesas Electronics is an 8-bit CMOS microcomputer based on the 740 family core, designed for analog-intensive control applications in household and office automation equipment. It integrates 60 Kbytes Flash memory, 2048 bytes RAM, a 10-bit 16-channel A/D converter, dual 8-bit D/A converters, and LED direct-drive capability (8 pins, 15 mA avg per pin). It operates across 1.8–5.5 V with selectable clock modes up to 16.8 MHz.

For engineers reviewing the M38039FFLHP#U0 datasheet, M38039FFLHP#U0 pinout, M38039FFLHP#U0 application, or M38039FFLHP#U0 equivalent, key selection considerations include its Flash-based field-programmability, integrated analog peripherals (A/D, D/A, PWM), low-power operation down to 1.8 V, and LQFP-64 packaging suitable for space-constrained embedded controllers.

Technical Context

The M38039FFLHP#U0 implements the standard 740-family instruction set (71 basic instructions) with minimum execution time of 0.24 µs at 16.8 MHz. Its CPU includes accumulator, two 8-bit index registers (X/Y), 8-bit stack pointer, and 16-bit program counter, supporting indexed, direct, and immediate addressing modes.

It features two independent clock generating circuits-main (XIN/XOUT) and sub-clock (XCIN/XCOUT)-enabling flexible timing architectures. The device supports three operating speed modes (high/middle/low) with voltage scaling tied to frequency: e.g., 16.8 MHz requires ≥4.5 V in high-speed mode but only ≥2.7 V in middle-speed mode for Flash versions.

Key Specifications

Pinout & Package

Package: PLQP0064KB-A (64-pin, 10 × 10 mm, 0.5 mm pitch LQFP).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100LEAFB#30 and HD64F38039FHPV, the M38039FFLHP#U0 uniquely balances Flash programmability, integrated dual D/A, and LED drive capability - making it optimal for analog-rich, update-capable embedded controllers where mixed-signal integration reduces system complexity.

Availability

M38039FFLHP#U0 is available at Aetrix Electronics and suitable for home appliance control, office equipment, and industrial panel meter applications requiring stable component supply and long-term manufacturability.

Supply support for M38039FFLHP#U0 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, and power solutions for industrial, automotive, and consumer markets.

The 3803 Group (Spec.L) product line was engineered for cost-effective, analog-intensive embedded control in household and office automation - emphasizing integrated A/D, D/A, PWM, and LED drive to minimize external components.

FAQ

What is the maximum operating frequency of the M38039FFLHP#U0?

The M38039FFLHP#U0 supports a maximum oscillation frequency of 16.8 MHz. At this frequency, the minimum instruction execution time is 0.24 µs. Operation at 16.8 MHz requires a supply voltage of 4.5–5.5 V in high-speed mode or 4.5–5.5 V in middle-speed mode for the Flash memory version. Lower frequencies enable reduced voltage operation down to 1.8 V.

Does the M38039FFLHP#U0 support in-system programming?

Yes, the M38039FFLHP#U0 supports in-system programming via its on-chip Flash memory. Programming is performed in byte units, and erasure is done in blocks. The device allows up to 100 program/erase cycles. No external programming hardware is required beyond standard debug interfaces compatible with Renesas' 740-family tools.

What are the analog input capabilities of the M38039FFLHP#U0?

The M38039FFLHP#U0 features a 10-bit successive-approximation A/D converter with 16 input channels (AN0–AN15), accessible via P00–P07 and P60–P67. It supports 8-bit reading mode for faster conversion. Input reference voltage is set by the VREF pin, and analog ground is isolated via AVSS - requiring separate routing from digital ground for accuracy.

Can the M38039FFLHP#U0 drive LEDs directly?

Yes, the M38039FFLHP#U0 includes eight dedicated LED drive pins (P20–P27) capable of sourcing up to 15 mA average current per pin (30 mA peak), with a total device limit of 90 mA. This enables direct connection of common-cathode LED segments or indicators without external driver transistors, simplifying front-panel design.

What clock sources does the M38039FFLHP#U0 support?

The M38039FFLHP#U0 supports two independent clock systems: a main clock (XIN/XOUT) for high-speed operation (up to 16.8 MHz with quartz or ceramic resonator) and a sub-clock (XCIN/XCOUT) for low-frequency timing (e.g., 32 kHz crystal for RTC or wake-up). Both circuits are fully integrated - no external oscillator ICs are needed.