Renesas R5F101LEDFB#V0

Overview

R5F101LEDFB#V0 from Renesas is a 64-pin LFQFP (0.5 mm pitch), 16 KB flash, 2 KB RAM, data-flash-free RL78/G13 16-bit microcontroller operating from 1.6 V to 5.5 V, delivering 41 DMIPS at 32 MHz with ultra-low-power modes (66 μA/MHz active, 0.57 μA RTC+LVD), used in battery-powered industrial sensors and smart metering interfaces.

For engineers reviewing the R5F101LEDFB#V0 datasheet, R5F101LEDFB#V0 pinout, R5F101LEDFB#V0 application, or R5F101LEDFB#V0 equivalent, key selection criteria include its 64-pin LFQFP-0.5 mm package, absence of on-chip data flash, -40°C to +85°C industrial temperature grade (D), integrated 10-bit ADC (26 channels), real-time clock with calendar, and hardware UART/SPI/I²C support for embedded control.

Technical Context

The R5F101LEDFB#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). It integrates a 12-bit interval timer, 16-bit timers (12 channels), and a calendar-capable real-time clock with alarm and correction functions.

Power management includes on-chip POR and LVD with 14 selectable voltage detection levels, HALT/STOP/SNOOZE low-power modes, and DMA controller (4 channels) enabling efficient memory-to-peripheral transfers in 2 clocks per 8/16-bit SFR–RAM operation - critical for deterministic sensor data acquisition and low-latency communication stacks.

Key Specifications

Pinout & Package

Package: 64-pin LFQFP, 10 mm × 10 mm, 0.5 mm pitch, exposed pad (PLQP0064KF-A).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F101LEDFB#V0, R5F101LEDFB#X0 offers identical functionality in tape format for production scalability, while R5F100LEDFB#V0 adds data flash for robust field-upgrade capability - making it preferable for devices requiring persistent configuration storage or staged firmware deployment.

Availability

R5F101LEDFB#V0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering interfaces, and home appliance control systems requiring stable component supply across extended product lifecycles.

Supply support for R5F101LEDFB#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 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications where reliability, code efficiency, and long-term supply stability are critical.

FAQ

What is the maximum operating frequency and performance of the R5F101LEDFB#V0?

The R5F101LEDFB#V0 operates up to 32 MHz and delivers 41 DMIPS. Its RL78 CPU core uses a 3-stage pipeline to achieve deterministic execution, with minimum instruction time adjustable from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz), enabling both high-speed control loops and ultra-low-power wake-on-event operation. This makes R5F101LEDFB#V0 suitable for real-time motor control and sensor fusion tasks.

Does the R5F101LEDFB#V0 include on-chip data flash memory?

No, the R5F101LEDFB#V0 does not include on-chip data flash memory. Per Renesas part numbering convention, the "101" prefix indicates data flash is omitted, unlike "100" variants which integrate 4 KB or 8 KB data flash. The R5F101LEDFB#V0 relies on its 16 KB code flash for program storage and uses RAM for runtime data - confirmed in the RL78/G13 datasheet section 1.2 and memory matrix tables. Applications requiring nonvolatile parameter storage should consider R5F100LEDFB#V0 instead.

What package type and pin count does the R5F101LEDFB#V0 use?

The R5F101LEDFB#V0 uses a 64-pin LFQFP package with 0.5 mm pitch and 10 mm × 10 mm body size (RENESAS code PLQP0064KF-A). The "FB" suffix in the part number explicitly denotes LFQFP-0.5 mm, and "#V0" indicates tray packaging. This package provides full I/O access, thermal performance suitable for industrial ambient temperatures, and compatibility with standard QFP reflow profiles - verified in Table 1-1 (page 10) of the R01DS0131EJ0380 datasheet.

What low-power modes are supported by the R5F101LEDFB#V0, and what is its lowest current consumption?

The R5F101LEDFB#V0 supports HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it consumes 0.57 μA (typical) at VDD = 1.8–5.5 V and TA = –40 to +85°C. Active-mode current is 66 μA/MHz. These values are measured and specified in the RL78/G13 datasheet (R01DS0131EJ0380, Section 1.1 Features), confirming R5F101LEDFB#V0's suitability for multi-year battery operation in remote sensing applications.

Which serial communication interfaces are integrated into the R5F101LEDFB#V0?

The R5F101LEDFB#V0 integrates UART (2–4 channels, LIN-capable), I²C/Simplified I²C (3–10 channels), and CSI (SPI-compatible, 2–8 channels). Pin P10 supports SCK00, and P11 supports SI00/RxD0/SDA00 - enabling flexible assignment of SPI, UART, or I²C functions per channel. All interfaces operate across the full 1.6–5.5 V supply range and support clock stretching and multi-master arbitration where applicable - as detailed in Section 1.1 "Serial interface" of the R01DS0131EJ0380 datasheet.