Renesas R5F12047ASP#50

Overview

R5F12047ASP#50 from Renesas Electronics is a 16-pin RL78/G15 16-bit microcontroller with 4 KB code flash, 1 KB RAM, and 1 KB data flash, operating from 2.4 V to 5.5 V. It integrates an 8/10-bit A/D converter (7 channels), 8-channel 16-bit timer array, UART, simplified I²C (2 channels), and simplified SPI (2 channels), targeting low-power industrial control applications such as sensor nodes and motor drivers.

For engineers reviewing the R5F12047ASP#50 datasheet, R5F12047ASP#50 pinout, R5F12047ASP#50 application, or R5F12047ASP#50 equivalent, key selection criteria include its 16-pin SSOP package, −40°C to +105°C industrial temperature grade (G), 4 KB flash capacity, on-chip debug support, and multiplexed analog/digital I/O with comparator and buzzer output capability.

Technical Context

The R5F12047ASP#50 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting minimum instruction execution time of 0.0625 μs at 16 MHz using the high-speed on-chip oscillator. It features selectable power-on-reset (SPOR) with four voltage thresholds and dual-clock system: high-speed on-chip oscillator (1–16 MHz, ±1.0% accuracy at −20°C to +85°C) and low-speed 15 kHz on-chip oscillator for watchdog operation.

Its peripheral set includes TAU0 timer array (8 channels), SAU0 serial array unit (2 channels supporting CSI/I²C/UART), 7-channel 8/10-bit A/D converter with internal 0.815 V reference, and 1-channel comparator with selectable internal/external reference. All peripherals are accessible via 14 CMOS I/O pins in the 16-pin SSOP package.

Key Specifications

Pinout & Package

Package: 16-pin plastic SSOP (4.4 × 5.0 mm, 0.65-mm pitch), RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F12047ASP#50, R5F12048ASP#50 offers double flash capacity for complex firmware while maintaining full hardware compatibility, whereas R5F12047GSP#50 provides identical functionality with formal industrial-grade certification labeling - both preserve the same 16-pin SSOP footprint and peripheral configuration.

Availability

R5F12047ASP#50 is available at Aetrix Electronics and suitable for industrial motor control, smart sensing, and energy metering applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.

Supply support for R5F12047ASP#50 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 markets.

The RL78/G15 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial control, sensor interfacing, and battery-operated devices requiring extended runtime and robust operation from −40°C to +105°C.

FAQ

What is the maximum operating frequency and instruction execution time of the R5F12047ASP#50?

The R5F12047ASP#50 supports a maximum high-speed on-chip oscillator frequency of 16 MHz, yielding a minimum instruction execution time of 0.0625 μs under those conditions. This timing assumes the high-speed oscillator is selected and stabilized; actual performance depends on clock source configuration and peripheral wait states. The device also supports lower frequencies (1–8 MHz) for reduced power consumption.

Does the R5F12047ASP#50 support external crystal oscillators, and what are the valid frequency ranges?

Yes, the R5F12047ASP#50 supports external crystal or ceramic resonators connected to X1/X2 pins, with a valid oscillation frequency range of 1 MHz to 12 MHz at VDD = 2.4 V to 5.5 V. The device also accepts external clock input (EXCLK) from 1 MHz to 16 MHz. Oscillation stabilization must be verified using the OSTC register before switching from the on-chip oscillator.

How many analog input channels does the R5F12047ASP#50 provide, and what ADC resolution options are available?

The R5F12047ASP#50 provides 7 analog input channels (ANI0–ANI6) with an 8/10-bit successive approximation A/D converter. Resolution is software-selectable per conversion; the internal 0.815 V reference enables ratiometric measurements independent of VDD variation, critical for precision sensor applications.

What serial communication interfaces are integrated into the R5F12047ASP#50, and how are they configured?

The R5F12047ASP#50 integrates one UART channel, two simplified I²C (IIC00/IIC01) channels, and two simplified SPI (CSI00/CSI01) channels via the SAU0 serial array unit. These share physical pins (e.g., P00–P07) and are enabled/disabled via peripheral function control registers; no external transceivers are needed for basic point-to-point communication.

Is the R5F12047ASP#50 pin-compatible with other RL78/G15 variants in the 16-pin SSOP package?

Yes, the R5F12047ASP#50 is fully pin-compatible with all other RL78/G15 16-pin SSOP variants including R5F12048ASP#50, R5F12047GSP#50, and R5F12048GSP#50. They share identical pin assignments, electrical characteristics, and peripheral mapping - only flash size (4 KB vs. 8 KB) and grade marking differ between these part numbers.