Renesas R5F12018GSP#30

Overview

R5F12018GSP#30 from Renesas Electronics is an 8 KB flash, 1 KB RAM RL78/G15 10-pin LSSOP microcontroller for industrial applications up to +105°C. It features a 16 MHz high-speed on-chip oscillator (±1.0% accuracy at −20 to +85°C), 4-channel 8/10-bit ADC, 8-channel 16-bit timer array, UART, two simplified SPI (CSI) channels, and two simplified I²C channels - deployed in smart sensors and low-power industrial control nodes.

For engineers reviewing the R5F12018GSP#30 datasheet, R5F12018GSP#30 pinout, R5F12018GSP#30 application, or R5F12018GSP#30 equivalent, key selection criteria include its G-grade temperature rating (−40 to +105°C), 10-pin LSSOP package with 0.65 mm pitch, integrated programmable clock/buzzer output (PCLBUZ0), and support for background-free data flash writes at VDD = 2.4–5.5 V.

Technical Context

The R5F12018GSP#30 implements the RL78-S2 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. Its power management includes HALT and STOP modes, selectable SPOR reset (2.25/2.68/3.02 V thresholds), and dual on-chip oscillators: high-speed (1–16 MHz) and low-speed (15 kHz).

Peripheral integration includes a 12-bit interval timer, watchdog timer, BCD correction circuit, and interrupt controller supporting up to 8 external sources (INTP0–INTP7). All analog functions - comparator (1 channel), ADC (4 inputs), and internal reference (0.815 V) - operate across the full 2.4–5.5 V supply range.

Key Specifications

Pinout & Package

Package: 10-pin LSSOP (4.4 × 3.6 mm, 0.65 mm pitch), lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F12017GSP#30, the R5F12018GSP#30 provides double flash capacity for feature-rich firmware; compared with R5F12048GSP#30, it trades package size and peripheral count for minimal board area in space-constrained industrial nodes.

Availability

R5F12018GSP#30 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and programmable logic controller I/O modules requiring stable component supply across extended temperature ranges.

Supply support for R5F12018GSP#30 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, and power solutions for automotive, industrial, and IoT markets.

The RL78/G15 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial control, sensor interfaces, and appliance applications - balancing performance, integration, and energy efficiency.

FAQ

What is the maximum operating frequency and oscillator accuracy of the R5F12018GSP#30?

The R5F12018GSP#30 supports a maximum high-speed on-chip oscillator frequency of 16 MHz with ±1.0% accuracy over the industrial temperature range of −20°C to +85°C. At full −40°C to +105°C (G-grade), accuracy degrades to ±1.5%. The device also includes a 15 kHz low-speed on-chip oscillator (±15%) for watchdog and STOP-mode timing. External crystal operation (X1/X2) is not supported on the 10-pin R5F12018GSP#30 variant.

Does the R5F12018GSP#30 support in-system programming and secure firmware updates?

Yes, the R5F12018GSP#30 supports full in-system programming via its on-chip debug interface and self-programming flash capability. It includes a flash shield window function to prevent unauthorized readout of code memory, and supports write operations without boot swap. Firmware updates can be performed in the field using UART or dedicated TOOL pins, with no external programmer required - making it suitable for remote maintenance in deployed industrial equipment.

How many analog input channels and what ADC resolution does the R5F12018GSP#30 provide?

The R5F12018GSP#30 integrates a single 8/10-bit successive approximation register (SAR) ADC with 4 analog input channels (ANI0–ANI3). Resolution is selectable per conversion, and the ADC operates across the full 2.4–5.5 V supply range. An internal 0.815 V reference is provided, eliminating the need for external reference components in most sensor interfacing applications.

What serial communication interfaces are available on the R5F12018GSP#30?

The R5F12018GSP#30 provides one UART channel (RxD0/TxD0), two simplified SPI (CSI) channels (CSI00/CSI01), two simplified I²C channels (IIC00/IIC01), and one standard I²C bus interface (IICA0). All interfaces share multiplexed port pins and are configurable via the peripheral I/O redirection register (PIOR), enabling flexible pin assignment without hardware changes.

What is the operating temperature range and package type of the R5F12018GSP#30?

The R5F12018GSP#30 is rated for industrial operation from −40°C to +105°C (G-grade) and is supplied in a 10-pin LSSOP package (4.4 × 3.6 mm, 0.65 mm pitch). This package is compatible with standard surface-mount assembly processes and supports reflow soldering per J-STD-020. The device meets RoHS and REACH compliance requirements.