Renesas DF38347XV

Overview

DF38347XV from Renesas Electronics is an 8-bit single-chip microcontroller in the H8/38347 Group, featuring an H8/300L CPU core, 64 KB on-chip Flash (F-ZTAT™), 4 KB RAM, 14-bit PWM, 10-channel 10-bit A/D converter, SCI interface, LCD controller/driver, and six timers. It operates at up to 20 MHz and targets low-power embedded control applications such as industrial sensors and appliance motor control.

For engineers reviewing the DF38347XV datasheet, DF38347XV pinout, DF38347XV application, or DF38347XV equivalent, key selection criteria include its F-ZTAT Flash architecture, integrated LCD driver with bias generation, sleep/standby power-down modes, and peripheral set optimized for cost-sensitive, battery-aware control systems.

Technical Context

The DF38347XV implements the H8/300L CPU core with 16-bit internal data bus and 24-bit address space, supporting 119 instructions including bit manipulation and block transfer. Its system clock generator supports main crystal (1–20 MHz), subclock (32.768 kHz), and internal RC oscillators, with programmable prescalers enabling flexible clock tree configuration for real-time control timing.

Peripheral integration includes a 10-channel 10-bit successive-approximation A/D converter with scan mode and external trigger support, a full-duplex SCI with framing/error detection, and an LCD controller supporting up to 4 commons × 16 segments with built-in bias voltage generation and charge pump-eliminating external components for segment-based displays.

Key Specifications

Pinout & Package

DF38347XV is housed in a 100-pin TFP (Thin Fine-Pitch) package (TFP-100G), measuring 14 mm × 14 mm × 1.0 mm, with 0.5 mm pitch and exposed thermal pad. Pin functions are defined per the H8/38347 Group Hardware Manual Rev.6.00 (2006), with dedicated pins for system control (RESET, TEST), clocks (XIN/XOUT, SUBXIN/SUBXOUT), and peripheral interfaces (SCI, PWM, A/D, LCD).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DF38347XV, R5F38347XV offers identical functionality under modern Renesas branding and support, while H8/38346 provides a cost-optimized variant with reduced Flash and A/D resources-enabling tiered product variants without PCB redesign.

Availability

DF38347XV is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance motor control, smart meter front panels, and medical diagnostic handhelds requiring stable component supply and long-lifecycle support.

Supply support for DF38347XV 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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The H8/38347 Group-including DF38347XV-is designed for ultra-low-power, cost-sensitive embedded control applications requiring integrated peripherals, Flash reprogrammability, and robust operation across extended temperature ranges.

FAQ

What is the maximum operating frequency of the DF38347XV?

The DF38347XV supports a maximum system clock frequency of 20 MHz at VCC = 5 V, delivering a 50 ns instruction cycle time. This timing is validated across the full industrial temperature range (−40°C to +85°C) and requires external crystal or ceramic resonator connected to XIN/XOUT pins. The DF38347XV also supports subclock (32.768 kHz) for RTC and low-power wake-up functions independent of main clock operation.

Does DF38347XV support in-system programming of its Flash memory?

Yes, DF38347XV features F-ZTAT™ Flash memory that supports in-system programming via on-chip boot ROM routines accessed through SCI or dedicated programming interface. No external programmer is required-firmware updates can be performed in the field using standard UART commands. The DF38347XV's Flash endurance is rated for 10,000 write/erase cycles with data retention exceeding 20 years at 85°C.

What LCD configurations does DF38347XV support?

DF38347XV integrates a dedicated LCD controller supporting up to 4 commons × 16 segments (64 segments total), with programmable duty cycle (1/2, 1/3, or 1/4), bias ratio (1/2 or 1/3), and built-in charge pump for VLCD generation. It drives static or multiplexed LCDs directly-no external bias resistors or capacitors needed. The DF38347XV's LCD module operates independently in sleep mode, preserving display content while minimizing system power.

How many A/D input channels does DF38347XV have, and what is their resolution?

DF38347XV includes ten 10-bit successive-approximation A/D converter channels (AN0–AN9), each with individual sampling control and result register. Conversion time is ≤10 μs at 20 MHz clock, and the module supports auto-scan mode with external trigger synchronization. Reference voltages (VREFH/VREFL) are configurable externally or internally, and the DF38347XV allows simultaneous sampling across multiple channels when used with external sample-hold circuitry.

Is DF38347XV pin-compatible with other members of the H8/38347 Group?

Yes, DF38347XV shares identical pinout and package (TFP-100G) with all members of the H8/38347 Group-including H8/38342 through H8/38346-enabling hardware reuse across variants. Differences lie solely in on-chip memory size (Flash/RAM), peripheral enablement (e.g., LCD, A/D count), and factory-programmed options. This allows scalable design migration: for example, upgrading from H8/38346 to DF38347XV requires no PCB change-only firmware update and configuration adjustment.