Renesas R5F12047MNA#40

Overview

R5F12047MNA#40 from Renesas Electronics is a 16-pin HWQFN-packaged RL78/G15 16-bit microcontroller with 4 KB code flash, 1 KB data flash, and 1 KB RAM. It operates from 2.4 V to 5.5 V, supports −40°C to +125°C industrial temperature range (M-grade), and integrates an 8-channel 16-bit timer array, 7-channel 8/10-bit ADC, and dual serial interfaces (CSI00/CSI01 + IICA0) for sensor interface and motor control in compact embedded systems.

For engineers reviewing the R5F12047MNA#40 datasheet, R5F12047MNA#40 pinout, R5F12047MNA#40 application, or R5F12047MNA#40 equivalent, this page delivers verified electrical specs, validated HWQFN-16 pin mapping, confirmed M-grade thermal rating, and real-world use cases in industrial sensing and low-power HMI subsystems - all derived directly from Renesas R01DS0420EJ0140 Rev.1.40.

Technical Context

The R5F12047MNA#40 implements the RL78-S2 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. Its power management includes HALT/STOP modes, selectable SPOR (2.25–4.45 V), and dual on-chip oscillators: high-speed (1–16 MHz, ±1.0% @ −20°C to +85°C) and low-speed (15 kHz). The device uses a dedicated 12-bit interval timer and watchdog timer driven by the low-speed oscillator.

Peripheral integration centers on the TAU0 timer array (8 channels), SAU0 serial array unit (2 channels supporting CSI/I2C/UART), and analog subsystem comprising 7 ADC inputs, 1 comparator (IVCMP0), and internal reference (0.815 V). All I/O pins support N-ch open-drain output with VDD-tolerant capability and programmable pull-up resistors.

Key Specifications

Pinout & Package

Package: 16-pin HWQFN (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal pad requiring PCB soldering to unconnected copper area per Renesas design note.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F12047MNA#40, R5F12048MNA#40 offers double code flash capacity without layout changes, while R5F12047GNA#40 reduces cost and relaxes thermal requirements - enabling trade-offs between memory headroom, operating margin, and BOM cost.

Availability

R5F12047MNA#40 is available at Aetrix Electronics and suitable for industrial temperature sensor nodes, compact motor control modules, smart power outlets, and low-cost industrial HMI panels requiring stable component supply across extended lifecycle programs.

Supply support for R5F12047MNA#40 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, 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, thermally demanding embedded applications - balancing performance, integration, and robustness in compact packages like HWQFN.

FAQ

What is the maximum operating frequency and oscillator accuracy of the R5F12047MNA#40?

The R5F12047MNA#40 supports a maximum high-speed on-chip oscillator frequency of 16 MHz with ±1.0% accuracy over −20°C to +85°C, and ±1.5% over −40°C to −20°C and +85°C to +125°C. External crystal operation up to 12 MHz is also supported via X1/X2 pins. This accuracy enables reliable timing for UART communication and PWM generation without external timing components in most industrial use cases.

Does the R5F12047MNA#40 support in-system programming and debugging?

Yes, the R5F12047MNA#40 includes an on-chip debug function accessible via TOOL0, TOOLRxD, and TOOLTxD pins. It supports full in-system programming of both code and data flash memory without boot swap functionality. Renesas recommends disabling debug features in mass production to preserve flash endurance, as specified in the R01DS0420EJ0140 datasheet.

How many analog input channels does the R5F12047MNA#40 provide, and what is the ADC resolution?

The R5F12047MNA#40 provides 7 analog input channels (ANI0–ANI6) with configurable 8-bit or 10-bit resolution. The ADC uses VDD as reference by default but supports internal 0.815 V reference for ratiometric measurements. Conversion time is programmable down to 1.0 μs per sample, enabling real-time sensor monitoring in closed-loop control systems.

What serial communication interfaces are integrated into the R5F12047MNA#40?

The R5F12047MNA#40 integrates two CSI (SPI-compatible) channels, one IICA (I²C) channel, and one UART channel. CSI00 and CSI01 support master/slave operation with programmable clock polarity and phase; IICA0 supports standard/fast-mode I²C up to 400 kbps; UART0 provides full-duplex asynchronous communication with configurable baud rates and framing.

Is the R5F12047MNA#40 pin-compatible with other RL78/G15 variants in the same package?

Yes, the R5F12047MNA#40 is pin-compatible with all 16-pin HWQFN RL78/G15 devices including R5F12048MNA#40, R5F12047GNA#40, and R5F12047ANA#40. Pin functions, power domains, and peripheral mappings are identical across these variants - only flash size, temperature grade, and oscillator accuracy differ, enabling drop-in upgrades or downgrades during design iteration.