Renesas R5F100PFAFB#V0

Overview

R5F100PFAFB#V0 from Renesas is a 100-pin LFQFP (0.5-mm pitch), industrial-grade RL78/G13 16-bit MCU with 96 KB flash, 8 KB data flash, 4 KB RAM, and operation from −40°C to +85°C. It delivers 41 DMIPS at 32 MHz, consumes 66 μA/MHz active and 0.57 μA in RTC+LVD-only mode, and integrates UART, I²C, SPI, 16-bit timers, 10-bit ADC (26 channels), and real-time clock - deployed in smart metering, HVAC controllers, and industrial HMI panels.

For engineers reviewing the R5F100PFAFB#V0 datasheet, R5F100PFAFB#V0 pinout, R5F100PFAFB#V0 application, or R5F100PFAFB#V0 equivalent, key selection criteria include its 100-pin LFQFP-0.5mm package, integrated data flash with 1M rewrite cycles, low-power STOP/HALT/SNOOZE modes, and support for LIN-bus via UART peripherals.

Technical Context

The R5F100PFAFB#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 1 MB address space, and configurable instruction timing (0.03125 μs min @ 32 MHz to 30.5 μs @ 32.768 kHz). It supports background operation during data flash rewriting and includes a dedicated low-speed on-chip oscillator for watchdog timer independence.

Its peripheral set includes up to 10 I²C channels, 4 UART/LIN interfaces, 8–16 × 16-bit timers, 12-bit interval timer, calendar-based RTC with alarm/correction, and 10-bit ADC with internal 1.45 V reference and temperature sensor - all operating across 1.6–5.5 V supply range.

Key Specifications

Pinout & Package

Package: 100-pin LFQFP (14 mm × 14 mm, 0.5-mm pitch), lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100PFAFB#V0, R5F100PGAFB#V0 provides scalable code memory for complex firmware, while R5F101PFAFB#V0 removes data flash to lower unit cost - both retain identical I/O count, timing, and low-power behavior for drop-in layout reuse.

Availability

R5F100PFAFB#V0 is available at Aetrix Electronics and suitable for smart metering, HVAC control, and industrial I/O modules requiring stable component supply, long-term lifecycle assurance, and industrial-temperature qualification.

Supply support for R5F100PFAFB#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 targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency for battery-operated and energy-harvesting systems.

FAQ

What is the maximum operating frequency and associated performance of the R5F100PFAFB#V0?

The R5F100PFAFB#V0 operates at up to 32 MHz using its high-accuracy on-chip oscillator (±1.0%), delivering 41 DMIPS. Its RL78 core achieves this with a 3-stage pipeline and minimum instruction time of 0.03125 μs. This performance level supports real-time control loops, protocol stack processing, and sensor fusion in resource-constrained designs - all while maintaining ultra-low power consumption.

Does the R5F100PFAFB#V0 include integrated data flash memory, and what are its endurance specifications?

Yes, the R5F100PFAFB#V0 includes 8 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical) at VDD = 1.8–5.5 V. It supports background operation (BGO), enabling concurrent program execution during rewrites. This eliminates the need for external EEPROM in applications requiring frequent parameter storage, calibration data logging, or firmware update staging - directly enhancing system reliability and reducing bill-of-materials cost.

How does the R5F100PFAFB#V0 support LIN bus communication, and which peripherals implement it?

The R5F100PFAFB#V0 supports LIN bus communication through its UART peripherals - specifically UART0 to UART3 - each capable of generating sync-break fields, handling LIN checksums (classic and enhanced), and supporting slave node auto-addressing. No external transceiver is required for basic LIN physical layer compliance; only a standard LIN transceiver IC (e.g., TJA1020) is needed for bus coupling. This integration simplifies automotive body electronics and industrial sensor network designs.

What low-power modes are available on the R5F100PFAFB#V0, and what is the lowest achievable current draw?

The R5F100PFAFB#V0 offers HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it draws just 0.57 μA (typical) - enabling decade-long operation on coin-cell batteries. HALT mode reduces current to 1.2 μA with full register retention, while SNOOZE allows selected peripherals (e.g., ADC, UART) to operate autonomously during CPU sleep. These modes are software-configurable and supported across its full −40°C to +85°C industrial temperature range.

Is the R5F100PFAFB#V0 pin-compatible with other RL78/G13 variants, and what package does it use?

Yes, the R5F100PFAFB#V0 uses a 100-pin LFQFP package with 0.5-mm pitch (Renesas code PLQP0100KE-A), and is pin-compatible with other 100-pin RL78/G13 variants including R5F100PGAFB#V0, R5F100PHAFB#V0, and R5F101PFAFB#V0. This allows direct PCB reuse across memory- or feature-scaled versions - for example, upgrading to 128 KB flash or downgrading to no data flash - without layout changes or signal routing modifications.