Renesas R5F12018MSP#10

Overview

R5F12018MSP#10 from Renesas Electronics is an 8 KB flash, 1 KB RAM RL78/G15 10-pin LSSOP microcontroller with 4-channel 8/10-bit ADC, 8-channel 16-bit timer, UART, dual simplified SPI (CSI), dual simplified I²C, and industrial-grade −40°C to +125°C operation for embedded control in motor drives and sensor nodes.

For engineers reviewing the R5F12018MSP#10 datasheet, R5F12018MSP#10 pinout, R5F12018MSP#10 application, or R5F12018MSP#10 equivalent, key selection criteria include its 10-pin LSSOP package, 8 KB code flash with self-programming, 1 KB data flash rated for 1M rewrites, high-speed on-chip oscillator accuracy of ±1.0% (−20°C to +85°C), and support for HALT/STOP low-power modes.

Technical Context

The R5F12018MSP#10 implements the RL78 CPU core with a 3-stage CISC pipeline, 1 MB address space, and configurable instruction execution time (0.0625 μs at 16 MHz to 1.0 μs at 1 MHz). It integrates a selectable power-on-reset circuit with four voltage thresholds and operates from a single 2.4–5.5 V supply.

Its peripheral set includes one UART channel, two simplified SPI (CSI) channels, two simplified I²C channels, one I²C bus interface, 4 analog inputs (ANI0–ANI3), one comparator (IVCMP0), and programmable clock/buzzer output (PCLBUZ0) supporting up to 10 MHz.

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 R5F12017MSP#10, the R5F12018MSP#10 provides double the code flash for complex control algorithms; compared with R5F12048MSP#10, it trades pin count and crystal support for minimal 10-pin integration-ideal for space-constrained, self-contained subsystems.

Availability

R5F12018MSP#10 is available at Aetrix Electronics and suitable for motor control subsystems, sensor node controllers, industrial panel interfaces, and appliance power management systems requiring stable component supply across extended temperature ranges.

Supply support for R5F12018MSP#10 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.

The RL78/G15 product line delivers ultra-low-power, cost-optimized MCUs targeting compact, thermally demanding embedded control applications-including white goods, industrial sensors, and motor drives-with integrated analog and communication peripherals.

FAQ

What is the maximum operating frequency and instruction execution time of the R5F12018MSP#10?

The R5F12018MSP#10 supports a maximum high-speed on-chip oscillator frequency of 16 MHz, yielding a minimum instruction execution time of 0.0625 μs. This timing is achievable when the high-speed oscillator is selected and stabilized, and applies across the full −40°C to +125°C operating range with specified accuracy tolerances.

Does the R5F12018MSP#10 support crystal oscillator input, and if not, what are the clocking options?

The R5F12018MSP#10 does not support external crystal oscillator input (X1/X2 pins are absent in the 10-pin LSSOP variant). Its clock sources are limited to the internal high-speed on-chip oscillator (1–16 MHz, ±1.0% accuracy) and low-speed on-chip oscillator (15 kHz). The R5F12018MSP#10 relies solely on these integrated oscillators for all timing domains.

How many analog input channels and comparator units does the R5F12018MSP#10 provide?

The R5F12018MSP#10 provides four analog input channels (ANI0–ANI3) and one comparator unit (IVCMP0) with selectable internal (0.815 V) or external reference voltage. The comparator supports both high-speed and low-speed operation modes and outputs to VCOUT0, enabling threshold detection for battery monitoring or fault signaling.

What is the data flash endurance and write granularity of the R5F12018MSP#10?

The R5F12018MSP#10 features 1 KB of data flash memory with a rated endurance of 1,000,000 write/erase cycles (typical) and a write granularity of 32 bits per operation. Rewrites require full-block erasure (512 B), and background operation (BGO) is not supported-code execution halts during data flash programming.

Is the R5F12018MSP#10 pin-compatible with other RL78/G15 variants in the same package?

Yes, the R5F12018MSP#10 shares identical pinout, electrical characteristics, and peripheral mapping with other 10-pin LSSOP RL78/G15 devices including R5F12017MSP#10, R5F12018GSP#10, and R5F12017GSP#10. Firmware and hardware designs are interchangeable across these variants except where flash size or temperature grade imposes functional constraints.