Renesas R5F100JGDFA#X0

Overview

R5F100JGDFA#X0 from Renesas is a 52-pin LQFP-0.65mm MCU in the RL78/G13 family, featuring 256 KB flash, 8 KB data flash, 20 KB RAM, 16-bit RL78 CPU core, and real-time clock with calendar support. It operates from 1.6 V to 5.5 V, delivers 41 DMIPS at 32 MHz, and targets battery-powered industrial control and sensor interface applications.

For engineers reviewing the R5F100JGDFA#X0 datasheet, R5F100JGDFA#X0 pinout, R5F100JGDFA#X0 application, or R5F100JGDFA#X0 equivalent, key selection criteria include its 256 KB code flash with self-programming, ultra-low-power STOP mode (0.57 μA), integrated RTC with alarm/calendar, 10-bit 26-channel ADC, and dual UART/LIN support for embedded telemetry systems.

Technical Context

The R5F100JGDFA#X0 implements the RL78 CISC CPU core with 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). It integrates a DMA controller with 4 channels and 2-clock transfers between SFR and RAM.

Its peripheral set includes up to 16 × 16-bit timers, a 12-bit interval timer, hardware multiplier/divider/MAC unit, and three serial interface types-CSI (SPI-compatible), UART/LIN, and I²C-with configurable channel counts per variant. The on-chip high-accuracy oscillator offers ±1.0% stability across –20°C to +85°C.

Key Specifications

Pinout & Package

Package: 52-pin LQFP, 10 mm × 10 mm, 0.65 mm pitch, JEDEC standard footprint (PLQP0052JA-A).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100JGDFA#X0, R5F100JGDFB#X0 offers identical functionality in a smaller LQFP-0.5 mm package for space-constrained designs, while R5F101JGDFA#X0 removes data flash to lower unit cost-making it suitable for fixed-parameter deployments without runtime configuration storage.

Availability

R5F100JGDFA#X0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and automotive body electronics requiring stable component supply across extended product lifecycles.

Supply support for R5F100JGDFA#X0 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 enterprise markets.

The RL78/G13 MCU family is designed for ultra-low-power general-purpose embedded control-targeting applications where energy efficiency, integration density, and long-term supply assurance are critical.

FAQ

What is the maximum operating frequency and performance of the R5F100JGDFA#X0?

The R5F100JGDFA#X0 operates at up to 32 MHz with the high-speed on-chip oscillator, delivering 41 DMIPS. Its RL78 CPU core achieves minimum instruction execution time of 0.03125 μs in high-speed mode, enabling responsive real-time control in applications such as motor drives and sensor fusion. The R5F100JGDFA#X0 maintains this performance across its full 1.6 V to 5.5 V supply range.

Does the R5F100JGDFA#X0 support in-system programming and secure firmware updates?

Yes, the R5F100JGDFA#X0 supports full in-system programming via its on-chip debug interface and self-programming flash controller. It includes boot swap functionality and flash shield window protection to prevent unauthorized access during firmware updates. These features allow safe, field-upgradable firmware deployment without requiring external programmers-critical for deployed R5F100JGDFA#X0-based devices.

What are the key low-power modes supported by the R5F100JGDFA#X0 and their typical current draw?

The R5F100JGDFA#X0 supports HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it draws just 0.57 μA-ideal for battery-powered applications requiring long standby periods. HALT mode consumes 66 μA/MHz during active operation, and SNOOZE enables selective peripheral wake-up while CPU remains halted. All modes retain RAM and register contents.

Can the R5F100JGDFA#X0 interface directly with 1.8 V or 2.5 V peripherals?

Yes, the R5F100JGDFA#X0 supports different-potential interface operation: its I/O ports can be configured to interface with 1.8 V, 2.5 V, and 3 V logic-level devices without level shifters. This capability simplifies mixed-voltage system design-especially useful when connecting to low-voltage sensors, displays, or communication ICs alongside the R5F100JGDFA#X0's 1.6–5.5 V operation.

How many serial communication interfaces does the R5F100JGDFA#X0 provide, and what protocols are supported?

The R5F100JGDFA#X0 provides up to 8 CSI (SPI-compatible), 4 UART/LIN, and 10 I²C channels-though exact count depends on pin multiplexing. UART peripherals include full LIN 2.2 support with automatic sync-break detection and checksum generation. CSI supports master/slave SPI with programmable clock polarity and phase. I²C supports standard/fast-mode (up to 400 kHz) and includes arbitration and clock stretching.