Renesas R5F12047MNA#20

Overview

R5F12047MNA#20 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 ambient temperature (M-grade), and integrates an 8-channel 16-bit timer array, 11-channel 8/10-bit ADC, dual comparators, UART, two simplified I²C interfaces, and two CSI (SPI-compatible) channels - deployed in motor control subsystems for HVAC actuators.

For engineers reviewing the R5F12047MNA#20 datasheet, R5F12047MNA#20 pinout, R5F12047MNA#20 application, or R5F12047MNA#20 equivalent, key selection criteria include its M-grade extended-temperature operation, HWQFN-16 (3 × 3 mm, 0.5-mm pitch) package, 4 KB flash capacity, dual comparator support, and verified compatibility with Renesas' E1/E20 on-chip debug interface.

Technical Context

The R5F12047MNA#20 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling minimum instruction execution time of 0.0625 μs at 16 MHz using the high-speed on-chip oscillator. Its memory map spans 1 MB address space with four banks of (8-bit × 8) general-purpose registers.

It features a selectable power-on-reset circuit with four voltage thresholds (2.25 V to 4.45 V), low-power HALT/STOP modes, and on-chip BCD correction logic. The device uses dedicated low-speed on-chip oscillator (15 kHz TYP.) for watchdog timer operation independent of main clock source.

Key Specifications

Pinout & Package

Package: HWQFN-16 (3 mm × 3 mm, 0.5 mm pitch), exposed die pad requiring PCB thermal pad connection with no electrical tie.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F12047MNA#20, R5F12048MNA#20 offers double flash capacity for larger firmware while maintaining identical thermal and electrical behavior; R5F12047GNA#20 reduces thermal qualification cost but sacrifices 20°C of upper operating margin.

Availability

R5F12047MNA#20 is available at Aetrix Electronics and suitable for HVAC actuator control, industrial sensor nodes, smart power outlets, and appliance HMI systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F12047MNA#20 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/G15 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, thermally demanding embedded applications - balancing performance, peripheral richness, and energy efficiency in compact packages.

FAQ

What is the maximum operating frequency and accuracy of the on-chip oscillator for R5F12047MNA#20?

The R5F12047MNA#20 supports a high-speed on-chip oscillator configurable from 1 MHz to 16 MHz. Its frequency accuracy is ±1.0% over −20°C to +85°C ambient, ±1.5% over −40°C to −20°C and +85°C to +125°C, and ±2.0% over the full −40°C to +85°C range per A-grade spec - validated for M-grade devices under industrial conditions.

Does R5F12047MNA#20 support crystal oscillator operation, and what are the valid frequency ranges?

Yes, R5F12047MNA#20 supports external crystal or ceramic resonator operation via X1/X2 pins. Valid frequencies range from 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, enabling synchronization with system-level clock domains.

How many analog input channels and comparators does R5F12047MNA#20 provide?

R5F12047MNA#20 provides 11 analog input channels (ANI0–ANI10) supporting 8/10-bit resolution ADC conversion, and two independent analog comparators (IVCMP0 and IVCMP1) with selectable internal reference (0.815 V TYP.) or external reference voltage inputs.

What debug interface does R5F12047MNA#20 use, and which pins are required?

R5F12047MNA#20 uses Renesas' on-chip debug interface compatible with E1 and E20 emulators. Debug communication requires three dedicated pins: TOOL0 (bidirectional data), TOOLRxD (input), and TOOLTxD (output), eliminating need for external debug adapters in development.

Is R5F12047MNA#20 pin-compatible with other RL78/G15 variants in HWQFN-16 package?

Yes, R5F12047MNA#20 is fully pin-compatible with all other RL78/G15 devices in the 16-pin HWQFN package (e.g., R5F12048MNA#20, R5F12047GNA#20), sharing identical pin functions, electrical characteristics, and mechanical footprint - enabling drop-in replacement within same package family.