Renesas DF38076RLP10WV

Overview

DF38076RLP10WV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8/300H Super Low Power Series, featuring an H8/300H CPU core with H8/300 instruction set compatibility, 52 KB on-chip ROM, 4 KB RAM, and integrated peripherals including 16-bit timer pulse unit (TPU), serial communication interfaces (SCI), and real-time clock (RTC). It operates at up to 20 MHz and supports multiple low-power modes (subactive, subsleep, standby) for battery-powered industrial control and sensor interface applications.

For engineers reviewing the DF38076RLP10WV datasheet, DF38076RLP10WV pinout, DF38076RLP10WV application, or DF38076RLP10WV equivalent, key selection criteria include its 80-pin TQFP package (12 × 12 mm, 0.5 mm pitch), flash-less ROM-based architecture, subclock oscillator support (32.768 kHz/38.4 kHz), and interrupt controller with three mask levels for deterministic real-time response in embedded systems.

Technical Context

The DF38076RLP10WV implements a Harvard-architecture H8/300H CPU with 16-bit data bus and 24-bit address space, supporting both medium-speed (φM) and high-speed (φH) system clocks derived from external crystal or on-chip oscillator. Its clock system includes independent prescalers, subclock generator, and programmable wait-state control for memory access timing.

Peripheral integration includes four SCI modules (SCI0–SCI3), a 16-bit TPU with eight channels for input capture/output compare/PWM, watchdog timer, and power-on reset circuit with external capacitor adjustment. The interrupt controller supports 25 internal interrupts (flash version) and external IRQ/NMI inputs, with priority managed via five 8-bit interrupt priority registers (IPRA–IPRE).

Key Specifications

Pinout & Package

DF38076RLP10WV is housed in a 80-pin Thin Quad Flat Package (TQFP) with 0.5 mm pitch, body size 12 × 12 mm (code: TFP-80C). Pin functions are defined per the H8/38076R Group Hardware Manual Rev.4.00, with dedicated signal groups for power, clock, reset, I/O ports (P1–P7), and peripheral-specific pins (e.g., TIOCA1/TIOCB1 for TPU, RXD0/TXD0 for SCI0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with H8/38076RF, DF38076RLP10WV trades flash flexibility for lower unit cost and higher security (ROM prevents firmware extraction); versus H8/38075R, it delivers critical RTC and expanded TPU/SCI resources needed for time-aware and multi-interface systems - making DF38076RLP10WV the balanced choice for production-ready, feature-complete embedded controllers.

Availability

DF38076RLP10WV is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, PLC I/O modules, and home appliance control boards requiring stable component supply across multi-year production cycles.

Supply support for DF38076RLP10WV 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 H8/38076R Group belongs to Renesas' legacy 16-bit H8 Family, designed specifically for cost-sensitive, ultra-low-power embedded control applications where ROM-based reliability and deterministic real-time performance outweigh flash flexibility.

FAQ

What is the maximum operating frequency of the DF38076RLP10WV?

The DF38076RLP10WV supports a maximum system clock frequency of 20 MHz in high-speed (φH) mode. This is achieved using an external crystal oscillator connected to the OSC1/OSC2 pins or the on-chip oscillator in supported variants. At 20 MHz, the CPU executes instructions with a 50 ns cycle time, enabling tight real-time control loops in applications such as motor drive and sensor sampling. The DF38076RLP10WV datasheet specifies timing margins for memory access and peripheral operation at this frequency.

Does the DF38076RLP10WV include on-chip flash memory?

No, the DF38076RLP10WV does not include on-chip flash memory. It features 52 KB of mask-programmed ROM, which is programmed during wafer fabrication and cannot be rewritten in the field. This architecture provides higher security, lower cost, and better reliability for high-volume production where firmware is finalized before manufacturing. For field-upgradable alternatives, consider the flash-based H8/38076RF variant.

What low-power modes are supported by the DF38076RLP10WV?

The DF38076RLP10WV supports four operational modes: Active (medium/high-speed), Subactive, Subsleep, and Standby. In Subsleep mode, current consumption drops below 10 µA while retaining RTC operation and RAM contents - ideal for battery-powered devices requiring periodic wake-up. The mode transitions are controlled via system control registers (SYSCR1/SYSCR2) and clock halt registers (CKSTPR1/CKSTPR2), with wake-up sources including external interrupts and RTC alarms.

Can the DF38076RLP10WV drive a 32.768 kHz crystal directly?

Yes, the DF38076RLP10WV integrates a dedicated subclock generator circuit that directly drives 32.768 kHz or 38.4 kHz crystal resonators via the OSC1 and OSC2 pins. The hardware specification requires resonators with equivalent series resistance (RS) ≤ 35 kΩ and load capacitance of 7 pF. This enables autonomous RTC operation in ultra-low-power modes without external oscillator components, reducing system cost and board space.

How many serial communication interfaces does the DF38076RLP10WV provide?

The DF38076RLP10WV integrates four independent Serial Communication Interface (SCI) modules - SCI0 through SCI3 - each implementing a full-duplex UART with programmable baud rate, parity, and stop-bit configuration. SCI3 is designated for on-board programming in boot mode, while SCI0–SCI2 support concurrent communication with displays, modems, or sensor networks. Each SCI has dedicated RXD/TXD pins mapped to specific port pins (e.g., P41/P42 for SCI3), as defined in the pin function table.