Renesas R5F100FJAFP#V0

Overview

R5F100FJAFP#V0 from Renesas is a 44-pin LQFP-packaged 16-bit RL78/G13 microcontroller with 96 KB flash, 8 KB data flash, 8 KB RAM, 32 MHz max CPU speed, and ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD). It integrates 10-bit ADC (24 channels), UART/LIN, I²C, CSI, 16-bit timers, RTC, and DMA - deployed in battery-powered industrial sensors and smart metering interfaces.

For engineers reviewing the R5F100FJAFP#V0 datasheet, R5F100FJAFP#V0 pinout, R5F100FJAFP#V0 application, or R5F100FJAFP#V0 equivalent, key selection criteria include its 44-pin LQFP-0.8 mm pitch package, -40°C to +85°C industrial temperature grade (D suffix), integrated LIN-capable UART, and on-chip data flash with 1M rewrite cycles for firmware parameter storage.

Technical Context

The R5F100FJAFP#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz HS mode) to 30.5 μs (32.768 kHz subsystem clock). Its memory subsystem includes 96 KB code flash with 1 KB block erase, 8 KB background-operable data flash, and 8 KB SRAM - enabling concurrent program execution and nonvolatile data updates.

Peripherals are organized around dual serial interface groups: up to 4 UART/LIN channels (including LIN bus support), 10 I²C/Simplified I²C channels, and 8 CSI channels; timing resources include 16× 16-bit timers, 1× real-time clock with calendar/alarm, and 1× watchdog timer with dedicated low-speed oscillator - all configurable via register-based control logic without external components.

Key Specifications

Pinout & Package

Package: 44-pin LQFP (10 × 10 mm, 0.8 mm pitch), lead-free, RoHS-compliant, tray packaging (#V0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100FJAFP#V0, R5F101FJAFP#V0 removes data flash to reduce cost and power in simpler control tasks, while R5F100GJAFP#V0 scales flash and RAM for feature-rich firmware - both retain identical timing, I/O, and industrial temperature rating.

Availability

R5F100FJAFP#V0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and building automation panels requiring stable component supply across long production lifecycles.

Supply support for R5F100FJAFP#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 industrial, automotive, 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 - emphasizing energy efficiency, integrated peripherals, and design flexibility.

FAQ

What is the maximum operating frequency and power consumption of the R5F100FJAFP#V0?

The R5F100FJAFP#V0 operates at up to 32 MHz with a typical active current of 66 μA/MHz. In STOP mode with only RTC and LVD active, it draws 0.57 μA. These values are measured at VDD = 1.8–5.5 V and TA = –40°C to +85°C. The high-accuracy on-chip oscillator (±1.0%) eliminates need for external crystal in many designs, reducing BOM cost and board space for the R5F100FJAFP#V0.

Does the R5F100FJAFP#V0 support LIN bus communication?

Yes, the R5F100FJAFP#V0 supports LIN bus communication through its UART peripherals, which include LIN-mode functionality compliant with LIN 2.x specifications. UART0 and UART1 can be configured for LIN master or slave operation with automatic sync-break detection and checksum generation - enabling direct integration into automotive body electronics or industrial control networks without external LIN transceivers for the R5F100FJAFP#V0.

What is the data flash endurance and programming voltage range for the R5F100FJAFP#V0?

The R5F100FJAFP#V0 features 8 KB of on-chip data flash rated for 1,000,000 write/erase cycles (typical) and programmable at VDD = 1.8 V to 5.5 V. Background operation (BGO) allows CPU execution from code flash during data flash rewriting. The flash library uses RAM starting at address FEF00H, and self-programming includes boot swap and flash shield window functions - critical for robust firmware updates in the R5F100FJAFP#V0.

How many ADC channels and what resolution does the R5F100FJAFP#V0 provide?

The R5F100FJAFP#V0 integrates a 10-bit successive approximation ADC with up to 24 analog input channels (ANI0–ANI23), selectable via ADANSE register. It includes an internal 1.45 V reference voltage and supports temperature sensor readout. Conversion time is 1.6 μs per sample at 10-bit resolution, and the ADC operates across the full 1.6–5.5 V VDD range - making it suitable for precision sensing in the R5F100FJAFP#V0's target applications.

Is the R5F100FJAFP#V0 pin-compatible with other RL78/G13 variants in the same package?

Yes, the R5F100FJAFP#V0 is pin-compatible with all 44-pin LQFP RL78/G13 variants sharing the same FP package code (e.g., R5F100GJAFP#V0, R5F101FJAFP#V0), including identical pin functions and electrical characteristics. This enables drop-in replacement for memory or feature scaling - for example, upgrading to R5F100GJAFP#V0 for more flash or selecting R5F101FJAFP#V0 to remove data flash - without PCB changes for the R5F100FJAFP#V0 footprint.