Renesas R5F100JEA100FA#50

Overview

R5F100JEA100FA#50 from Renesas is a 52-pin LQFP-0.65mm, 96 KB flash, 8 KB data flash, 8 KB RAM RL78/G13 16-bit MCU with ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD), 32 MHz max CPU speed, and integrated 10-bit ADC (26 channels), RTC, UART, I²C, and SPI interfaces - deployed in battery-powered industrial sensors and smart metering endpoints.

For engineers reviewing the R5F100JEA100FA#50 datasheet, R5F100JEA100FA#50 pinout, R5F100JEA100FA#50 application, or R5F100JEA100FA#50 equivalent, key selection criteria include its 52-pin LQFP package, 96 KB code flash with self-programming and boot swap, 8 KB data flash with background operation, -40°C to +85°C industrial temperature grade, and integrated low-power peripherals for energy-constrained embedded control.

Technical Context

The R5F100JEA100FA#50 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It integrates a high-accuracy ±1.0% on-chip oscillator (1–32 MHz selectable) and supports HALT/STOP/SNOOZE low-power modes with fast wake-up.

Peripherals include up to 26-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, 8× 16-bit timers, real-time clock with calendar/alarm/correction, 2–4 UART/LIN channels, 3–10 I²C/Simplified I²C channels, and 2–8 CSI (SPI-compatible) channels - all operating across 1.6–5.5 V supply range.

Key Specifications

Pinout & Package

Package: 52-pin LQFP, 10 mm × 10 mm, 0.65 mm pitch, exposed pad (PLQP0052JA-A).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F100JFA100FA#50 and R5F100JGA100FA#50, the R5F100JEA100FA#50 provides optimal balance of cost, power efficiency, and memory for mid-tier industrial control - delivering identical peripheral set and low-power profile while reducing flash/RAM overhead where not required.

Availability

R5F100JEA100FA#50 is available at Aetrix Electronics and suitable for smart utility metering, industrial sensor nodes, and home energy monitors requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for R5F100JEA100FA#50 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 is engineered for ultra-low-power general-purpose embedded control - targeting battery-operated sensors, smart meters, and industrial HMIs where energy efficiency, peripheral integration, and code density are critical.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100JEA100FA#50?

The R5F100JEA100FA#50 operates at up to 32 MHz using its high-speed on-chip oscillator, achieving 41 DMIPS performance. Its RL78 CPU core features a 3-stage pipeline and supports configurable instruction timing - from 0.03125 μs at full speed to 30.5 μs in ultra-low-speed mode - enabling deterministic real-time response across diverse power budgets. This makes the R5F100JEA100FA#50 well-suited for time-critical control loops in industrial and metering applications.

Does the R5F100JEA100FA#50 support in-system programming and secure firmware updates?

Yes, the R5F100JEA100FA#50 supports full in-system programming via its on-chip debug interface and integrated flash library. It includes boot swap functionality for fail-safe firmware updates and flash shield window protection to prevent unauthorized access to critical code sections. The 96 KB code flash and 8 KB data flash both support self-programming under VDD = 1.8–5.5 V, allowing field upgrades without external programmers - a key requirement for deployed R5F100JEA100FA#50-based metering and sensor products.

What analog capabilities does the R5F100JEA100FA#50 provide for sensor interfacing?

The R5F100JEA100FA#50 integrates a 10-bit successive-approximation ADC with up to 26 input channels, internal 1.45 V reference voltage, and a factory-calibrated on-die temperature sensor. It supports single-ended and differential conversions, hardware averaging, and scan mode triggering via timer or external event - enabling precise, low-noise acquisition from thermistors, pressure transducers, and current shunts without external signal conditioning. These analog features are fully operational across the device's 1.6–5.5 V supply range.

How does the R5F100JEA100FA#50 achieve ultra-low-power operation in battery-powered applications?

The R5F100JEA100FA#50 achieves ultra-low-power operation through multiple hardware features: 66 μA/MHz active current, HALT/STOP/SNOOZE low-power modes, and sub-μA retention states. In STOP mode with only RTC and LVD active, it draws just 0.57 μA - enabling decade-long battery life in smart meters and remote sensors. Its on-chip voltage detector (LVD) offers 14 programmable threshold levels for brown-out detection, and the high-accuracy ±1.0% on-chip oscillator eliminates external crystal power draw, further optimizing R5F100JEA100FA#50 system-level energy efficiency.

Is the R5F100JEA100FA#50 pin-compatible with other RL78/G13 variants in the same package?

Yes, the R5F100JEA100FA#50 is fully pin-compatible with all other RL78/G13 52-pin LQFP-0.65mm variants, including R5F100JFA100FA#50 and R5F100JGA100FA#50. They share identical pin configuration, electrical characteristics, and peripheral mapping - allowing drop-in memory upgrades during design iteration or production ramp without PCB revision. This compatibility simplifies inventory management and enables scalable product families based on the same R5F100JEA100FA#50 hardware platform.