Renesas R5F100LLAFA#V0

Overview

R5F100LLAFA#V0 from Renesas is a 64-pin LQFP-0.65mm MCU in the RL78/G13 family, featuring 512 KB flash, 8 KB data flash, 32 KB RAM, 16-bit RL78 CPU core, and real-time clock with calendar support. It operates from 1.6–5.5 V, achieves 41 DMIPS at 32 MHz, and delivers ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), targeting battery-powered industrial control and sensor nodes.

For engineers reviewing the R5F100LLAFA#V0 datasheet, R5F100LLAFA#V0 pinout, R5F100LLAFA#V0 application, or R5F100LLAFA#V0 equivalent, key selection criteria include its 64-pin LQFP package, integrated RTC with alarm/calendar, 26-channel 10-bit ADC, dual UART/LIN support, and hardware BCD correction for metering applications.

Technical Context

The R5F100LLAFA#V0 implements the RL78 CISC core with 3-stage pipeline and configurable instruction timing (0.03125 μs @32 MHz to 30.5 μs @32.768 kHz). It integrates a 12-bit interval timer, 16-bit timers (12 channels), and a dedicated RTC with calendar, alarm, and clock correction functions.

Power management includes HALT/STOP/SNOOZE modes, on-chip POR and 14-level LVD, and background operation for data flash rewriting. Serial interfaces comprise up to 10 I²C/SimpI²C channels, 4 UART/LIN channels, and 8 CSI (SPI-compatible) channels - all confirmed for this 64-pin variant.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (12 × 12 mm, 0.65-mm pitch), RoHS-compliant, JEDEC standard footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F101LLAFA#V0 and RA2L1A0CDJ00#AC0, the R5F100LLAFA#V0 uniquely combines full calendar RTC, hardware BCD correction, and 8 KB data flash in a mature, pin-compatible RL78 platform - making it optimal for metering and long-life industrial control where deterministic low-power timing and embedded data logging are essential.

Availability

R5F100LLAFA#V0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and building HVAC systems requiring stable component supply across extended product lifecycles.

Supply support for R5F100LLAFA#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, and power solutions for automotive, industrial, and IoT markets.

The RL78/G13 product line delivers ultra-low-power, cost-optimized MCUs for battery-operated and energy-conscious applications - emphasizing integrated peripherals, robust flash reliability, and simplified development with E2 studio and CS+ toolchains.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for R5F100LLAFA#V0?

The R5F100LLAFA#V0 operates at up to 32 MHz and delivers 41 DMIPS performance per the RL78/G13 datasheet Rev.3.80. This metric reflects actual integer compute throughput under benchmark conditions and is validated across the full temperature range (−40°C to +85°C). The R5F100LLAFA#V0 achieves this using its 3-stage pipeline RL78 core with high-speed on-chip oscillator calibrated to ±1.0% accuracy.

Does R5F100LLAFA#V0 support hardware-based real-time clock with calendar functionality?

Yes, the R5F100LLAFA#V0 integrates a full-featured real-time clock with calendar support covering years, months, days, hours, minutes, and seconds - accurate to 99 years. It includes alarm interrupt, clock correction (±0.5 ppm step adjustment), and independent operation in STOP mode using the 32.768 kHz crystal or internal sub-system clock. This capability is confirmed in Section 1.1 Features and Table 1-1 of the R01DS0131EJ0380 datasheet for the R5F100LLAFA#V0 variant.

How many analog input channels and what ADC resolution does R5F100LLAFA#V0 provide?

The R5F100LLAFA#V0 features a 10-bit successive approximation ADC with up to 26 analog input channels, supporting single-ended and differential measurement modes. It includes an internal 1.45 V reference voltage and on-chip temperature sensor - both accessible without external components. These specifications are explicitly listed in the "A/D converter" subsection of Section 1.1 Features and verified for 64-pin RL78/G13 devices including the R5F100LLAFA#V0.

What serial communication interfaces are available on R5F100LLAFA#V0, and how many channels does each support?

The R5F100LLAFA#V0 provides three serial interface types: up to 10 channels of I²C/Simplified I²C, up to 4 channels of UART/LIN (with LIN 2.2 compliance), and up to 8 channels of CSI (SPI-compatible serial interface). All are confirmed functional on the 64-pin LQFP package per the RL78/G13 datasheet Rev.3.80 Section 1.1 and pin configuration tables. Channel counts reflect maximum concurrent use - individual channel enablement depends on pin multiplexing configuration.

Is R5F100LLAFA#V0 qualified for industrial temperature range, and what is its specified operating ambient temperature?

Yes, the R5F100LLAFA#V0 is qualified for industrial applications with an operating ambient temperature range of −40°C to +85°C (denoted by the 'A' suffix in the part number per Figure 1-1). This rating is explicitly stated in Section 1.1 Features and applies to all RL78/G13 devices with the 'A' field-of-application code. The R5F100LLAFA#V0 meets this specification in its standard LQFP-64 package without derating.