Renesas R5F102AAASP#X0

Overview

R5F102AAASP#X0 from Renesas is a 30-pin LSSOP packaged RL78/G12 16-bit microcontroller with 16 KB code flash, 2 KB data flash, and 2 KB RAM, operating at 1.8–5.5 V and delivering 31 DMIPS at 24 MHz. It integrates an ultra-low-power architecture (63 μA/MHz), 8-channel 16-bit TAU timer, 8-channel 10-bit A/D converter, UART/CSI/I²C serial interfaces, DMA controller, and CRC hardware - deployed in battery-powered sensor nodes and industrial control panels.

For engineers reviewing the R5F102AAASP#X0 datasheet, R5F102AAASP#X0 pinout, R5F102AAASP#X0 application, or R5F102AAASP#X0 equivalent, this page delivers verified specifications, validated pin functions, real-world use cases, and confirmed alternative parts for low-voltage embedded designs requiring data flash persistence and mixed-signal timing precision.

Technical Context

The R5F102AAASP#X0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.04167 μs (24 MHz on-chip oscillator) to 1 μs (1 MHz). Its memory subsystem includes 16 KB code flash (1 KB block size), 2 KB data flash with background operation (BGO), and 2 KB RAM - all accessible within a 1 MB address space.

Power management includes HALT, STOP, and SNOOZE modes, on-chip POR/LVD (12-level selectable), and dual-oscillator support: high-speed on-chip oscillator (1–24 MHz, ±1.0% accuracy at –20 to +85°C) and main system clock via X1/X2 (1–20 MHz ceramic/crystal). Peripheral I/O redirection enables flexible pin assignment for UART0/1/2, CSI00/11/20, IIC00/11/20, and TAU channels.

Key Specifications

Pinout & Package

Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F102AAASP#X0, R5F102AAGSP adds extended temperature range without altering memory or peripherals, while R5F103AAASP#X0 removes data flash and safety accelerators to reduce BOM cost - making each variant optimal for distinct thermal and functional requirements.

Availability

R5F102AAASP#X0 is available at Aetrix Electronics and suitable for smart home sensor hubs, industrial motor controllers, medical wearables, energy metering modules, and battery-powered IoT edge nodes requiring stable component supply across production lifecycles.

Supply support for R5F102AAASP#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power management ICs for industrial, automotive, and IoT markets.

The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated embedded systems requiring integrated analog peripherals, data retention, and functional safety features.

FAQ

What is the maximum operating frequency of the R5F102AAASP#X0?

The R5F102AAASP#X0 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. When using an external crystal (X1/X2), the maximum main system clock frequency is 20 MHz. At 24 MHz, it achieves 31 DMIPS performance, with minimum instruction execution time of 0.04167 μs - confirmed in the R01DS0193EJ0250 Rev.2.50 datasheet Section 1.1.

Does the R5F102AAASP#X0 include data flash memory?

Yes, the R5F102AAASP#X0 includes 2 KB of dedicated data flash memory with background operation (BGO) capability, allowing program execution during write/erase cycles. It supports up to 1,000,000 rewrite cycles at VDD = 1.8–5.5 V. This feature is exclusive to R5F102-series parts and absent in R5F103 variants - as specified in Section 1.3.1 of the datasheet.

What package type and pin count does the R5F102AAASP#X0 use?

The R5F102AAASP#X0 uses a 30-pin plastic LSSOP package (7.62 mm body width, 0.65-mm lead pitch), identified by the "SP" suffix and "#X0" embossed tape packaging specification. Pin configuration matches Figure 1-11 (30-pin LSSOP top view) in the R01DS0193EJ0250 datasheet, with 26 total I/O lines including analog inputs, UART, CSI, and I²C functions.

Can the R5F102AAASP#X0 operate from a 1.8 V supply?

Yes, the R5F102AAASP#X0 operates across a 1.8–5.5 V supply range, enabling direct integration with single-cell LiFePO₄ (2.5–3.65 V), alkaline (1.0–1.6 V with boost), or regulated 1.8 V rails. Its ultra-low-power design achieves 63 μA/MHz at 1.8 V, and all peripherals - including A/D converter with internal 1.45 V reference - remain fully functional per Section 1.1 and Table 2-1 of the datasheet.

What safety features are implemented in the R5F102AAASP#X0?

The R5F102AAASP#X0 integrates hardware CRC calculation, RAM guard, and SFR guard - safety mechanisms that detect and prevent unintended memory corruption during development or field operation. These features are explicitly documented in Section 1.3.3 and Figure 1-13 (30-pin block diagram) of the R01DS0193EJ0250 datasheet and are not present in the R5F103 series.