Renesas R5F1018AALA#U0

Overview

R5F1018AALA#U0 from Renesas is a 25-pin WFLGA-packaged RL78/G13 16-bit microcontroller with 16 KB flash, 2 KB RAM, and no data flash memory, operating at 1.6–5.5 V and delivering 41 DMIPS at 32 MHz for ultra-low-power embedded control in consumer-grade applications (−40°C to +85°C). It integrates an 8/10-bit ADC (26-channel), real-time clock, UART/SPI/I²C interfaces, and low-power STOP/HALT modes.

For engineers reviewing the R5F1018AALA#U0 datasheet, R5F1018AALA#U0 pinout, R5F1018AALA#U0 application, or R5F1018AALA#U0 equivalent, key selection criteria include its 25-pin WFLGA-0.5 mm pitch package, absence of data flash, 16 KB code flash capacity, RTC + LVD support, and suitability for space-constrained battery-powered devices requiring <0.57 μA RTC-only operation.

Technical Context

The R5F1018AALA#U0 implements the RL78 CPU core with a 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), and features a 1 MB address space with four banks of 8-bit general-purpose registers. Its memory architecture includes on-chip RAM (2 KB), 16 KB code flash (1 KB block size), and no data flash - distinguishing it from "100" series variants.

Power management includes on-chip POR and LVD (14 selectable levels), HALT/STOP/SNOOZE modes, and ultra-low power consumption: 66 μA/MHz active current and 0.57 μA in RTC+LVD-only operation. Peripheral integration covers up to 26 analog inputs, 16-bit timers (8 channels), simplified SPI (CSI), UART/LIN, I²C, DMA (2 channels), and hardware multiplier/divider.

Key Specifications

Pinout & Package

Package: 25-pin WFLGA (3.0 × 3.0 mm, 0.5 mm pitch), RoHS-compliant, moisture-sensitive level 3 (MSL3).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F1008AALA#U0, the R5F1018AALA#U0 trades data flash capability for identical code flash and lower BOM cost in footprint-constrained WFLGA designs; versus R5F1016AASM#50, it delivers 9 additional I/O pins and 10 more ADC channels in a smaller 3×3 mm WFLGA package - critical for miniaturized sensing nodes.

Availability

R5F1018AALA#U0 is available at Aetrix Electronics and suitable for smart home sensor nodes, portable medical monitors, industrial remote I/O modules, energy harvesting controllers, and battery-backed RTC applications requiring stable component supply and long-term manufacturability.

Supply support for R5F1018AALA#U0 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 targets cost-sensitive, ultra-low-power embedded control applications - emphasizing energy efficiency, integrated peripherals, and rapid development with scalable toolchains and HAL libraries.

FAQ

Does R5F1018AALA#U0 include data flash memory?

No, R5F1018AALA#U0 does not include data flash memory. It contains 16 KB of code flash and 2 KB of RAM only. Data flash is present in the "100" series variants (e.g., R5F1008AALA#U0), but omitted in the "101" series like R5F1018AALA#U0 to reduce cost and simplify firmware architecture for applications that store parameters in external EEPROM or use code flash for configuration.

What is the package type and pin pitch of R5F1018AALA#U0?

R5F1018AALA#U0 uses a 25-pin WFLGA (Wafer-Level Glass Array) package measuring 3.0 × 3.0 mm with 0.5 mm pin pitch. This ultra-compact, bottom-terminal package supports fine-pitch PCB assembly and is qualified for reflow soldering per JEDEC J-STD-020 moisture sensitivity level 3 (MSL3).

Can R5F1018AALA#U0 operate from a 1.8 V supply?

Yes, R5F1018AALA#U0 supports operation from 1.6 V to 5.5 V, including 1.8 V. At 1.8 V, it achieves reduced maximum frequency (typically ≤16 MHz per datasheet derating), but retains full peripheral functionality including ADC, RTC, and UART - enabling compatibility with 1.8 V logic domains and single-cell lithium primary batteries.

How many ADC channels does R5F1018AALA#U0 support?

R5F1018AALA#U0 supports up to 26 analog input channels (ANI0–ANI25) with 8/10-bit resolution, selectable reference voltage (VDD or internal 1.45 V), and built-in temperature sensor. All channels are accessible on dedicated pins or shared with GPIO, subject to multiplexing constraints defined in the pin configuration table.

Is R5F1018AALA#U0 pin-compatible with other RL78/G13 variants in WFLGA-25?

Yes, R5F1018AALA#U0 shares identical pinout and package (PWLG0025KA-A) with all other RL78/G13 25-pin WFLGA variants - including R5F1008AALA#U0, R5F1018CALA#U0, and R5F1018DALA#U0. Pin functions are consistent across the group; differences lie only in memory configuration and temperature grade - enabling drop-in replacement where flash/RAM requirements align.