Renesas DF38104FPWV

Overview

DF38104FPWV from Renesas Electronics is an 8-bit single-chip microcontroller in the H8/38104 Group, featuring a H8/300L CPU core, 32 KB Flash ROM, 1 KB RAM, and integrated peripherals including 10-bit × 4-channel ADC, SCI UART, LCD controller (25 seg × 4 com), and multiple timers (Timer A, Timer F, WDT). It operates at up to 20 MHz within 2.7–5.5 V supply and targets low-power embedded control applications such as industrial sensors and consumer appliance UIs.

For engineers reviewing the DF38104FPWV datasheet, DF38104FPWV pinout, DF38104FPWV application, or DF38104FPWV equivalent, this page delivers verified technical context, package mapping to FP-64A, confirmed Flash-based memory architecture, real-time peripheral timing behavior, and validated alternative options for migration or second sourcing.

Technical Context

The DF38104FPWV implements the H8/300L CPU core with full instruction set compatibility to the H8/300, supporting 16-bit addressing and CISC architecture optimized for deterministic real-time control. Its on-chip Flash ROM enables in-system reprogramming, while the 10-bit ADC supports simultaneous sampling across four channels with programmable trigger sources.

Peripheral integration includes a single-channel SCI supporting asynchronous UART mode with baud rate generation via internal timer, a dedicated LCD controller driving up to 100 segments, and three independent timer modules (Clock Timer A, Compare Timer F, and watchdog timer) with configurable prescalers and interrupt capability - all synchronized to the main system clock without external components.

Key Specifications

Pinout & Package

DF38104FPWV is housed in a 64-pin plastic QFP package designated FP-64A (14 mm × 14 mm, 0.8 mm pitch), compliant with JEDEC MS-026 and RoHS requirements. The package supports standard surface-mount reflow assembly and offers thermal performance suitable for industrial ambient temperatures (–20°C to +75°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DF38104FPWV, R5F38104FPWV offers identical functionality under updated Renesas branding and lifecycle management, while H8/38104FPWV reflects the pre-2010 NEC designation-both are electrically and mechanically drop-in replacements with no PCB or firmware changes required.

Availability

DF38104FPWV is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance control boards, smart thermostat UIs, and small-motor drive interfaces requiring stable component supply, long-term manufacturability, and RoHS-compliant sourcing.

Supply support for DF38104FPWV 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 automotive, industrial, and IoT applications.

The DF38104FPWV belongs to the H8/38104 Group within Renesas' legacy H8 Family, designed specifically for cost-sensitive, low-power embedded control applications requiring Flash programmability, integrated analog peripherals, and robust real-time responsiveness.

FAQ

What is the maximum operating frequency of the DF38104FPWV?

The DF38104FPWV supports a maximum system clock frequency of 20 MHz, achievable with an external crystal or ceramic resonator connected to OSC1/OSC2. This frequency enables deterministic execution of real-time control tasks with sub-microsecond interrupt latency and consistent instruction timing-critical for motor commutation or sensor sampling synchronization in the DF38104FPWV.

Does the DF38104FPWV include an integrated ADC?

Yes, the DF38104FPWV integrates a 10-bit successive approximation register (SAR) ADC with four input channels (AD0–AD3). It supports software- or timer-triggered conversions, selectable reference voltage (VCC or internal bandgap), and conversion times as fast as 12.5 µs-making it suitable for direct interfacing with thermistors, potentiometers, or light sensors in DF38104FPWV-based systems.

What package type is used for the DF38104FPWV?

The DF38104FPWV is packaged in a 64-pin plastic quad flat pack designated FP-64A (14 mm × 14 mm, 0.8 mm lead pitch), compliant with JEDEC MS-026 and RoHS standards. This package supports standard reflow soldering and provides mechanical and thermal characteristics appropriate for industrial temperature range operation (–20°C to +75°C) in DF38104FPWV applications.

Can the DF38104FPWV drive an LCD display directly?

Yes, the DF38104FPWV includes a built-in LCD controller supporting up to 25 segments and 4 commons, enabling direct drive of static or multiplexed (1/2 or 1/4 duty) LCD panels without external driver ICs. This feature reduces component count and power consumption in DF38104FPWV-based thermostats, meters, and appliance displays.

Is there on-chip debug capability for the DF38104FPWV?

Yes, the DF38104FPWV supports on-chip emulation (OCE) via pin P95, providing full hardware debugging-including breakpoints, single-stepping, and memory/register inspection-without requiring external JTAG probes. This capability streamlines firmware development and validation for the DF38104FPWV in resource-constrained embedded projects.