Renesas R5F100AFDSP#X0

Overview

R5F100AFDSP#X0 from Renesas Electronics is a 30-pin, 96 KB flash, 8 KB data flash, 4 KB RAM RL78/G13 16-bit microcontroller with ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD mode), 1.6–5.5 V supply, and integrated peripherals including 10-bit ADC (26-channel), UART/LIN, I²C, SPI, 16-bit timers, RTC, and DMA - deployed in smart home sensor hubs requiring battery longevity and real-time control.

For engineers reviewing the R5F100AFDSP#X0 datasheet, R5F100AFDSP#X0 pinout, R5F100AFDSP#X0 application, or R5F100AFDSP#X0 equivalent, key selection criteria include its LSSOP-30 package, industrial-grade -40°C to +85°C temperature range (D-grade), on-chip debug support, self-programmable flash with boot swap, and BGO-capable data flash for concurrent execution and nonvolatile parameter storage.

Technical Context

The R5F100AFDSP#X0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 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 12-bit interval timer, calendar-based RTC with alarm and correction, and a watchdog timer driven by a dedicated low-speed on-chip oscillator.

Its peripheral set includes up to 26 analog inputs with internal 1.45 V reference and temperature sensor, 3–10 I²C/Simplified I²C channels, 2–4 UART/LIN interfaces, and 8–16 16-bit timers - all operating under dynamic voltage scaling enabled by the on-chip POR and 14-level LVD with interrupt/reset options.

Key Specifications

Pinout & Package

Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), JEDEC MS-013AC variant, RoHS-compliant, tape-and-reel packaging (#X0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100BF DSP#X0 and R5F101AF DSP#X0, the R5F100AFDSP#X0 delivers optimal balance of embedded data storage, low-power performance, and industrial temperature capability - making it ideal for sensor-edge devices needing reliable local parameter persistence without memory expansion.

Availability

R5F100AFDSP#X0 is available at Aetrix Electronics and suitable for smart home controllers, industrial condition monitors, and battery-powered sensor nodes requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F100AFDSP#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 automotive, industrial, and IoT markets.

The RL78/G13 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications - delivering high integration, robust peripheral sets, and energy efficiency for sensor, appliance, and industrial control systems.

FAQ

What is the maximum operating frequency and corresponding current consumption of the R5F100AFDSP#X0?

The R5F100AFDSP#X0 operates up to 32 MHz using its high-accuracy on-chip oscillator (±1.0% over VDD = 1.8–5.5 V, TA = –20 to +85°C). At full speed, it consumes 66 μA per MHz in active mode. In STOP mode with only RTC and LVD active, current drops to 0.57 μA - enabling multi-year operation on primary batteries. The R5F100AFDSP#X0 achieves this via adaptive clock gating and multiple low-power states.

Does the R5F100AFDSP#X0 support in-system programming and secure firmware updates?

Yes, the R5F100AFDSP#X0 supports full in-system programming via on-chip debug interface and includes flash shield window and block erase prohibition features for firmware security. Its self-programming capability enables field updates with boot swap functionality - allowing validated new firmware to be written to alternate flash blocks while the current version remains operational. This ensures safe, atomic firmware upgrades for the R5F100AFDSP#X0 in deployed systems.

How many analog input channels does the R5F100AFDSP#X0 support, and what reference options are available?

The R5F100AFDSP#X0 integrates a 10-bit successive-approximation ADC supporting up to 26 analog input channels. It provides internal 1.45 V reference voltage (selectable only in HS mode) and supports external references via AVREFP/AVREFM pins. The ADC operates across the full 1.6–5.5 V supply range, enabling direct measurement of sensors powered from the same rail - a key capability for compact, single-supply designs using the R5F100AFDSP#X0.

What serial communication interfaces are integrated into the R5F100AFDSP#X0?

The R5F100AFDSP#X0 integrates three serial interface types: UART/LIN (2–4 channels, LIN 2.2 compliant), I²C/Simplified I²C (3–10 channels), and CSI (Simplified SPI, 2–8 channels). All operate concurrently and support independent clock sources. The R5F100AFDSP#X0's UART includes built-in LIN break detection and sync byte handling, while CSI supports master/slave modes with configurable frame length - simplifying connectivity to displays, sensors, and companion radios.

Is the R5F100AFDSP#X0 pin-compatible with other RL78/G13 variants in the same package?

Yes, the R5F100AFDSP#X0 is fully pin-compatible with all other RL78/G13 devices in the 30-pin LSSOP package (e.g., R5F100ADSP#X0, R5F100AGDSP#X0), sharing identical pin functions, electrical characteristics, and mechanical footprint. This allows drop-in replacement for memory or feature scaling - for example, upgrading to R5F100BF DSP#X0 (128 KB flash) or downgrading to R5F100ADSP#X0 (64 KB flash) without PCB redesign. Pin compatibility is guaranteed across the R5F100x DSP#X0 family.