Renesas R5F10379ANA#U5

Overview

R5F10379ANA#U5 from Renesas Electronics is a 24-pin HWQFN-packaged RL78/G12 16-bit microcontroller designed for ultra-low-power embedded control in consumer and industrial applications. It features 12 KB code flash, 768 B RAM, 1.8–5.5 V operation, 24 MHz high-speed on-chip oscillator (±5% accuracy), and an 8-channel 10-bit A/D converter with 11 analog inputs.

For engineers reviewing the R5F10379ANA#U5 datasheet, R5F10379ANA#U5 pinout, R5F10379ANA#U5 application, or R5F10379ANA#U5 equivalent, key selection criteria include its 24-pin HWQFN (4 × 4 mm, 0.5 mm pitch) footprint, absence of data flash memory, single UART channel, no DMA controller, and support for STOP/HALT/SNOOZE low-power modes.

Technical Context

The R5F10379ANA#U5 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, delivering 31 DMIPS at 24 MHz. Its peripheral set includes one UART, one simplified SPI (CSI), no simplified I²C, four 16-bit timer channels, and a 12-bit interval timer - all configured without DMA or CRC hardware acceleration.

It operates across –40°C to +85°C (A-grade), uses a single 1.8–5.5 V supply, and relies on its high-speed on-chip oscillator (selectable 1–24 MHz) as primary clock source. The device lacks data flash memory and safety features such as RAM guard or SFR guard found in R5F102-series counterparts.

Key Specifications

Pinout & Package

Package: HWQFN-24 (4 × 4 mm, 0.5 mm pitch), exposed die pad (to be connected to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10279ANA#U5, the R5F10379ANA#U5 trades data flash, DMA, and tighter oscillator tolerance for lower cost and power; versus R5F10378ANA#U5, it offers +4 KB flash and +256 B RAM for more complex control algorithms without changing PCB layout.

Availability

R5F10379ANA#U5 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, and smart lighting systems requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.

Supply support for R5F10379ANA#U5 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 headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G12 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and energy-efficient embedded control applications across consumer and industrial segments.

FAQ

What is the maximum operating frequency of the R5F10379ANA#U5?

The R5F10379ANA#U5 supports a maximum high-speed on-chip oscillator frequency of 24 MHz, enabling 31 DMIPS performance. It also accepts external crystal or ceramic resonator inputs up to 20 MHz (1.8–2.7 V) or 8 MHz (1.8 V only). The minimum instruction execution time is 0.04167 µs at 24 MHz operation.

Does the R5F10379ANA#U5 include data flash memory?

No, the R5F10379ANA#U5 does not include data flash memory. Unlike the R5F102-series RL78/G12 devices, the R5F103-series - including R5F10379ANA#U5 - omits the 2 KB data flash block entirely. Firmware must use code flash for both program and configuration storage, with self-programming supported only in code flash.

What are the low-power modes supported by the R5F10379ANA#U5?

The R5F10379ANA#U5 supports HALT, STOP, and SNOOZE modes. HALT stops the CPU clock while preserving RAM and register contents; STOP halts all clocks for ultra-low leakage; SNOOZE allows selected peripherals (e.g., UART, ADC) to operate autonomously while the CPU remains stopped - ideal for sensor wake-up events.

How many analog input channels does the R5F10379ANA#U5 support?

The R5F10379ANA#U5 supports up to 11 analog input channels: ANI0–ANI3 and ANI16–ANI22. These map to physical pins P20, P21, P22, P23, P40, P41, P42, P10, P11, P12, and P13. The 10-bit A/D converter operates across the full 1.8–5.5 V supply range with internal 1.45 V reference and integrated temperature sensor.

Is the R5F10379ANA#U5 pin-compatible with other RL78/G12 24-pin variants?

Yes, the R5F10379ANA#U5 shares identical pinout and HWQFN-24 package (PWQN0024KE-A/PWQN0024KF-A) with all other RL78/G12 24-pin devices including R5F1027x and R5F1037x series. Pin functions are consistent across variants, though peripheral availability (e.g., DMA, data flash) differs - allowing hardware reuse across firmware variants.