Renesas R5F101LDDFB#V0

Overview

R5F101LDDFB#V0 from Renesas is a 64-pin LFQFP, 512 KB flash, no data flash, industrial-grade (−40°C to +85°C) RL78/G13 16-bit MCU with 12 KB RAM, 32 MHz max CPU speed, and ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD). It integrates 16-bit timers (12 channels), 10-bit ADC (26 channels), UART/SPI/I²C interfaces, and operates from 1.6–5.5 V for smart sensor nodes and industrial control panels.

For engineers reviewing the R5F101LDDFB#V0 datasheet, R5F101LDDFB#V0 pinout, R5F101LDDFB#V0 application, or R5F101LDDFB#V0 equivalent, key selection criteria include its 64-pin LFQFP-0.5mm package, absence of on-chip data flash, industrial temperature rating, and support for background data flash programming via external memory mapping - critical for firmware-over-the-air updates in field-deployed equipment.

Technical Context

The R5F101LDDFB#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). Its memory map includes 1 MB address space, 512 KB code flash organized in 1 KB blocks, and 12 KB on-chip RAM.

Power management features HALT, STOP, and SNOOZE modes; the on-chip LVD offers 14 selectable voltage detection levels with interrupt/reset options. Peripheral integration includes 2 DMA channels, 16-bit × 16-bit multiplier/accumulator, real-time clock with calendar/alarm, and hardware watchdog timer driven by dedicated low-speed oscillator.

Key Specifications

Pinout & Package

Package: 64-pin LFQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F101LDDFB#V0, R5F101LDGFB#V0 adds extended temperature range and data flash at higher cost and power, while R5F100LDDFB#V0 provides identical packaging with data flash but lacks industrial qualification - making R5F101LDDFB#V0 optimal for fixed-parameter industrial controllers where flash endurance and ambient margin are secondary to BOM cost and power efficiency.

Availability

R5F101LDDFB#V0 is available at Aetrix Electronics and suitable for industrial automation, smart sensor networks, and motor control systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized Renesas distribution channels.

Supply support for R5F101LDDFB#V0 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 family is engineered for ultra-low-power general-purpose embedded control, targeting cost-sensitive industrial equipment, home appliances, and sensor edge nodes where energy efficiency, integration density, and toolchain maturity are critical.

FAQ

Does R5F101LDDFB#V0 include on-chip data flash memory?

No, R5F101LDDFB#V0 does not integrate data flash memory. This variant belongs to the "101" series where data flash is omitted to reduce cost and die size. Applications requiring nonvolatile parameter storage must use external EEPROM or FRAM, or implement wear-leveling in code flash with appropriate sector management. The R5F100LDDFB#V0 variant includes 8 KB of data flash and shares the same pinout.

What is the maximum operating frequency and corresponding performance of R5F101LDDFB#V0?

R5F101LDDFB#V0 operates at up to 32 MHz with the high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Instruction execution time ranges from 0.03125 μs (at 32 MHz) to 30.5 μs (at 32.768 kHz), enabling both high-speed control loops and ultra-low-power periodic wake-ups. The RL78 CPU's 3-stage pipeline ensures deterministic timing for real-time tasks.

Which package type and footprint does R5F101LDDFB#V0 use?

R5F101LDDFB#V0 uses a 64-pin LFQFP package with 10 mm × 10 mm body size and 0.5 mm lead pitch (Renesas package code FB). It is compatible with standard QFP reflow profiles and matches land patterns defined in Renesas document PLQP0064KF-A. The #V0 suffix indicates tray packaging for automated SMT placement.

Can R5F101LDDFB#V0 operate across the full industrial temperature range?

Yes, R5F101LDDFB#V0 is qualified for −40°C to +85°C operation (D-grade), meeting industrial ambient requirements. It incorporates on-chip voltage detector (LVD) with 14 selectable thresholds and power-on-reset (POR) circuitry to ensure robust startup and brown-out recovery across this range. Thermal derating is not required within these limits.

What communication interfaces are supported by R5F101LDDFB#V0?

R5F101LDDFB#V0 supports up to 3 I²C channels, 4 UART/LIN channels, and 8 CSI (SPI-compatible) channels. All interfaces are multiplexed onto GPIO pins with flexible remapping via register configuration. UART supports LIN 2.2 compliance including sync byte detection and checksum generation, enabling direct integration into automotive body electronics networks.