Renesas R5F102AADSP#X0

Overview

R5F102AADSP#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 8-channel 10-bit ADC, UART/CSI/I²C serial interfaces, 8-channel TAU timer, DMA controller, CRC engine, and operates across –40°C to +85°C for industrial applications.

For engineers reviewing the R5F102AADSP#X0 datasheet, R5F102AADSP#X0 pinout, R5F102AADSP#X0 application, or R5F102AADSP#X0 equivalent, key selection criteria include its 2 KB data flash with background operation (BGO), 2-channel DMA support, on-chip CRC and RAM/SFR guard safety features, and industrial-grade temperature range - all critical for embedded control in motor drives, sensor nodes, and programmable logic modules.

Technical Context

The R5F102AADSP#X0 implements the RL78 CPU core with a 3-stage CISC pipeline, supporting instruction execution times from 0.04167 µs (24 MHz high-speed on-chip oscillator) to 1 µs (1 MHz low-speed mode). Its memory subsystem includes 16 KB code flash (1 KB block size), 2 KB data flash rated for 1,000,000 rewrites, and 2 KB RAM - all accessible under single-supply 1.8–5.5 V operation.

Peripheral integration centers on dual-serial interface capability (1 UART + 1 CSI + 1 I²C), 8-channel 16-bit timer array (TAU) with PWM output, 8-channel 10-bit ADC with internal reference (1.45 V) and temperature sensor, and dedicated hardware for CRC-16/32 computation - all managed via vectored interrupts with up to 26 internal sources and 6 external pins.

Key Specifications

Pinout & Package

Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), RoHS-compliant, industrial-grade thermal performance (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F102AAGSP#X0, the R5F102AADSP#X0 trades extended temperature rating for lower procurement cost while retaining identical feature set; versus R5F103AADSP#X0, it adds 2 KB data flash, 2-channel DMA, and hardware CRC - enabling robust firmware updates and functional safety compliance.

Availability

R5F102AADSP#X0 is available at Aetrix Electronics and suitable for motor control modules, industrial sensor nodes, PLC I/O modules, and smart power outlets requiring stable component supply and long-term industrial lifecycle support.

Supply support for R5F102AADSP#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial control, sensor interfacing, and appliance applications - balancing performance, peripheral richness, and energy efficiency.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F102AADSP#X0?

The R5F102AADSP#X0 achieves a maximum operating frequency of 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS of processing performance. This rating is measured under standard conditions (VDD = 2.7–5.5 V, TA = –40°C to +85°C) and reflects integer computational throughput per the EEMBC CoreMark methodology. The device maintains full peripheral functionality at this speed.

Does the R5F102AADSP#X0 include data flash memory, and what is its endurance specification?

Yes, the R5F102AADSP#X0 includes 2 KB of on-chip data flash memory. Its endurance is specified at 1,000,000 write/erase cycles (typical) across the full operating voltage range of 1.8–5.5 V. Background operation (BGO) allows program execution from code flash while simultaneously rewriting data flash - a key enabler for nonvolatile parameter storage and firmware updates.

What safety features are implemented in the R5F102AADSP#X0 that distinguish it from the R5F103 series?

The R5F102AADSP#X0 integrates CRC computation hardware, RAM guard, and SFR guard - features absent in the R5F103 series. These provide runtime detection of memory corruption and unauthorized register writes, supporting functional safety requirements per IEC 61508. The presence of 2-channel DMA further enhances deterministic behavior by offloading data movement from the CPU during critical operations.

Can the R5F102AADSP#X0 operate from a 1.8 V supply, and which peripherals remain functional at that voltage?

Yes, the R5F102AADSP#X0 operates fully across 1.8–5.5 V. At 1.8 V, the high-speed on-chip oscillator supports frequencies up to 8 MHz, and all core peripherals - including 10-bit ADC (with internal 1.45 V reference), UART, CSI, I²C, TAU timers, and DMA - remain functional. I/O pins maintain TTL compatibility and 6 V-tolerant N-ch open-drain capability on designated pins.

What is the pin count, package type, and lead pitch of the R5F102AADSP#X0?

The R5F102AADSP#X0 uses a 30-pin plastic LSSOP package (7.62 mm body length) with 0.65 mm lead pitch. This surface-mount package is RoHS-compliant, supports automated assembly, and provides industrial-grade thermal performance (–40°C to +85°C). The #X0 suffix indicates embossed tape packaging for high-volume pick-and-place manufacturing.