Renesas R5F100PFAFA#10

Overview

R5F100PFAFA#10 from Renesas is a 100-pin LQFP-0.65mm MCU in the RL78/G13 family, featuring 128 KB flash memory, 12 KB RAM, and integrated 10-bit A/D converter with 26 analog inputs. It operates from 1.6 V to 5.5 V, delivers 41 DMIPS at 32 MHz, and supports ultra-low-power modes including STOP (0.57 μA) and HALT for battery-powered industrial control and sensor interface applications.

For engineers reviewing the R5F100PFAFA#10 datasheet, R5F100PFAFA#10 pinout, R5F100PFAFA#10 application, or R5F100PFAFA#10 equivalent, key selection criteria include its 100-pin LQFP package, 128 KB code flash with data flash security features, real-time clock with calendar function, and support for LIN-bus UART communication in industrial temperature range (–40°C to +85°C).

Technical Context

The R5F100PFAFA#10 implements the RL78 CPU core with 3-stage pipeline CISC architecture, enabling instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz low-speed mode). It integrates dual-clock domains: high-speed on-chip oscillator (±1.0% accuracy, selectable 1–32 MHz) and dedicated low-speed oscillator for watchdog and RTC.

Its peripheral set includes 16-channel 16-bit timers, 3–10 I²C/Simplified I²C channels, 2–4 UART/LIN interfaces, 2–8 CSI/SPI channels, and DMA controller with 2/4 channels supporting 2-clock transfers between SFR and RAM - optimized for deterministic real-time sensor acquisition and actuator control.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 × 20 mm, 0.65 mm pitch), JEDEC standard PLQP0100JC-A, RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100PLAFA#10, the R5F100PFAFA#10 trades extended temperature rating for lower unit cost in standard industrial environments; versus R5F101PFAFA#10, it adds 8 KB data flash with BGO and flash shielding - essential for secure, autonomous data logging without host intervention.

Availability

R5F100PFAFA#10 is available at Aetrix Electronics and suitable for smart metering, industrial sensor hubs, home appliance control, and building HVAC systems requiring stable component supply across long production lifecycles.

Supply support for R5F100PFAFA#10 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 industrial, automotive, and infrastructure markets.

The RL78/G13 product line delivers true low-power embedded control with integrated analog peripherals and robust security - designed specifically for cost-sensitive, battery-operated, and industrial-grade applications demanding reliability and long-term supply stability.

FAQ

What is the maximum operating frequency and performance of the R5F100PFAFA#10?

The R5F100PFAFA#10 operates up to 32 MHz with a peak performance of 41 DMIPS. Its RL78 CPU core achieves this using a 3-stage pipeline CISC architecture and high-accuracy on-chip oscillator (±1.0% over –40°C to +85°C). The minimum instruction execution time is 0.03125 μs in high-speed mode, making it suitable for real-time control tasks in industrial and appliance applications where deterministic timing is required. The R5F100PFAFA#10 maintains this performance across its full 1.6–5.5 V supply range.

Does the R5F100PFAFA#10 include data flash memory, and what are its key characteristics?

Yes, the R5F100PFAFA#10 includes 8 KB of data flash memory with background operation (BGO), allowing code execution from program memory while rewriting data flash. It supports 1,000,000 write/erase cycles (typical) and operates across the full VDD range of 1.8–5.5 V. The flash library uses RAM starting at address FF300H, and security features include block erase prohibition and flash shield window protection. This makes the R5F100PFAFA#10 ideal for applications requiring secure, long-term parameter storage - such as calibration data in smart meters or configuration settings in HVAC controllers.

What analog capabilities does the R5F100PFAFA#10 provide for sensor interfacing?

The R5F100PFAFA#10 integrates a 10-bit A/D converter with up to 26 analog input channels, internal 1.45 V reference voltage, and an on-chip temperature sensor. It supports simultaneous sampling across multiple channels and operates across the full 1.6–5.5 V supply range. The analog inputs are mapped to dedicated pins (e.g., P20–P27), and the converter includes scan mode and interrupt-on-completion functionality. These features make the R5F100PFAFA#10 well-suited for multi-sensor industrial monitoring, environmental sensing in building controls, and precision analog front-end tasks without requiring external ADCs.

How does the R5F100PFAFA#10 support low-power operation in battery-powered applications?

The R5F100PFAFA#10 delivers industry-leading low-power operation with 0.57 μA typical current consumption in STOP mode (RTC + LVD active) and 66 μA/MHz in active mode. It supports multiple low-power states - HALT, STOP, and SNOOZE - each with configurable wake-up sources including key interrupts, timer events, and peripheral triggers. Its ability to run the RTC from a 32.768 kHz crystal while maintaining sub-μA quiescent current enables decade-long battery life in metering and remote sensor nodes. The R5F100PFAFA#10's power management is fully integrated, eliminating external supervisors or reset ICs.

Is the R5F100PFAFA#10 pin-compatible with other RL78/G13 variants, and what package does it use?

Yes, the R5F100PFAFA#10 uses a standardized 100-pin LQFP package (14 × 20 mm, 0.65 mm pitch) per JEDEC standard PLQP0100JC-A, ensuring mechanical and electrical compatibility with other 100-pin RL78/G13 members like R5F100PGAFA#10 and R5F100PLAFA#10. Pin assignments follow the RL78/G13 family layout, including dedicated VDD/VSS pairs, multi-function I/O ports, and consistent peripheral mapping (e.g., UART0 on P10/P11). This allows hardware reuse across firmware variants and simplifies migration paths within the family. The R5F100PFAFA#10 is not pin-compatible with 100-pin LFQFP variants (e.g., R5F100PFAFB#10) due to differing pitch and footprint.