Renesas R5F12047GNA#40

Overview

R5F12047GNA#40 from Renesas Electronics is a 16-pin, 4 KB flash, 1 KB RAM RL78/G15 16-bit microcontroller with industrial-grade temperature range (−40°C to +105°C), high-speed on-chip oscillator (1–16 MHz), 8-channel 16-bit timer, and 7-channel 8/10-bit A/D converter - deployed in smart sensors and industrial control modules requiring low-power operation at 2.4–5.5 V.

For engineers reviewing the R5F12047GNA#40 datasheet, R5F12047GNA#40 pinout, R5F12047GNA#40 application, or R5F12047GNA#40 equivalent, key selection criteria include its HWQFN-16 (3 × 3 mm, 0.5-mm pitch) package, integrated comparator and UART/CSI/I²C interfaces, STOP/HALT low-power modes, and 1,000,000-cycle data flash endurance - all validated for industrial ambient operation up to +105°C.

Technical Context

The R5F12047GNA#40 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 integrates a selectable power-on-reset circuit with four voltage thresholds (2.25–4.45 V) 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 full I²C bus interface, an 8/10-bit A/D converter with internal 0.815 V reference, and dual comparators - all mapped to multiplexed pins on the 16-pin HWQFN package with configurable I/O redirection via PIOR registers.

Key Specifications

Pinout & Package

Packaged in a 16-pin HWQFN (3 × 3 mm, 0.5-mm pitch) with exposed die pad requiring PCB thermal land connection per datasheet Remark 3. Pin functions are fully multiplexed and configurable via Peripheral I/O Redirection Registers (PIOR).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F12047GNA#40, R5F12048GNA#40 offers double flash capacity for complex control algorithms, while R5F12047GSP#50 trades the compact HWQFN for easier hand-soldering in SSOP - both retain identical peripheral functionality and industrial −40°C to +105°C qualification.

Availability

R5F12047GNA#40 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, and motor drive interface modules requiring stable component supply, long-term lifecycle support, and guaranteed G-grade temperature performance.

Supply support for R5F12047GNA#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 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 fusion, and appliance applications - combining flash scalability, rich analog integration, and robust industrial qualification.

FAQ

What is the maximum operating frequency of the R5F12047GNA#40?

The R5F12047GNA#40 supports a maximum system clock frequency of 16 MHz using its high-speed on-chip oscillator. This yields a minimum instruction execution time of 0.0625 μs. External crystal oscillation up to 12 MHz and external clock input up to 16 MHz are also supported, with oscillator configuration managed via option bytes and system clock control registers.

Does the R5F12047GNA#40 support in-system programming without external debug hardware?

Yes, the R5F12047GNA#40 supports in-system programming via its dedicated TOOL0, TOOLRxD, and TOOLTxD pins - enabling firmware updates and debugging without JTAG/SWD adapters. The on-chip debug function is fully integrated and requires only a simple UART-level interface, though Renesas cautions against using it in mass-production firmware due to flash endurance limits.

How many analog input channels does the R5F12047GNA#40 have, and what is their resolution?

The R5F12047GNA#40 features seven analog input channels (ANI0–ANI6) with selectable 8-bit or 10-bit resolution. It includes an internal 0.815 V reference voltage and supports external reference inputs (IVREF0/IVREF1), allowing precise ratiometric measurements across its 2.4–5.5 V supply range without external voltage references.

What low-power modes are available on the R5F12047GNA#40, and how do they differ?

The R5F12047GNA#40 offers HALT mode (CPU stopped, peripherals active, fast wake-up) and STOP mode (CPU and most peripherals halted, lowest current draw). Both modes retain RAM content and support wake-up via external interrupts (INTP0–INTP7), timer events, or comparator outputs - enabling sub-10 μA standby current in STOP mode while preserving system state.

Is the R5F12047GNA#40 pin-compatible with other RL78/G15 variants in the same package?

Yes, the R5F12047GNA#40 is pin-compatible with all other RL78/G15 devices in the 16-pin HWQFN package (e.g., R5F12048GNA#40, R5F12047MNA#40), sharing identical pin functions, electrical characteristics, and mechanical footprint. Differences are limited to flash size (4 KB vs. 8 KB), temperature grade (G vs. M), and ordering suffix - enabling drop-in replacement for capacity or qualification upgrades.