Renesas R5F1027AGNA#25

Overview

R5F1027AGNA#25 from Renesas Electronics is a 24-pin HWQFN-packaged 16-bit RL78/G12 microcontroller designed for industrial embedded control. It integrates 16 KB code flash, 2 KB data flash, 1.5 KB RAM, operates from 1.8–5.5 V, delivers 31 DMIPS at 24 MHz, and supports -40°C to +105°C ambient operation (G-grade) for harsh-environment applications like motor control and sensor nodes.

For engineers reviewing the R5F1027AGNA#25 datasheet, R5F1027AGNA#25 pinout, R5F1027AGNA#25 application, or R5F1027AGNA#25 equivalent, key selection considerations include its 2-channel DMA, 11-channel 10-bit ADC with internal reference, dual simplified SPI/I²C interfaces, CRC hardware accelerator, and industrial-temperature-rated data flash endurance (1M rewrite cycles).

Technical Context

The R5F1027AGNA#25 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 1 MB address space, and configurable instruction timing (0.04167 µs min @ 24 MHz). Its power management includes HALT, STOP, and SNOOZE modes enabling 63 µA/MHz active current draw.

It features a high-accuracy ±1.0% (–20 to +85°C) high-speed on-chip oscillator (1–24 MHz), low-speed 15 kHz on-chip oscillator, and supports external crystal (X1/X2) up to 20 MHz. Peripheral integration includes TAU0 16-bit timer (4 channels), window watchdog, 12-bit interval timer, and programmable clock/buzzer output (PCLBUZ0).

Key Specifications

Pinout & Package

Package: 24-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad (recommended connection to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F1027ADNA#25 and R5F1037AGNA#25, the R5F1027AGNA#25 uniquely balances industrial temperature resilience, integrated data flash for field-upgradable calibration, and hardware acceleration (CRC, DMA) for deterministic real-time performance - making it optimal for sealed, thermally demanding edge controllers.

Availability

R5F1027AGNA#25 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, factory automation I/O modules, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F1027AGNA#25 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, with over 40 years of microcontroller innovation.

The RL78/G12 product line targets cost-sensitive, ultra-low-power industrial and consumer control applications - emphasizing energy efficiency, integrated analog peripherals, and robust qualification for extended temperature and long-term reliability.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F1027AGNA#25?

The R5F1027AGNA#25 achieves a maximum system clock of 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS of processing performance. This is measured under HS (high-speed main) mode with VDD ≥ 2.7 V; at lower supply voltages (1.8–2.4 V), max clock is 16 MHz. The R5F1027AGNA#25 maintains this performance across its full –40°C to +105°C industrial temperature range.

Does the R5F1027AGNA#25 support background data flash rewriting while executing application code?

Yes, the R5F1027AGNA#25 supports Background Operation (BGO) for its 2 KB data flash memory. This allows the CPU to execute instructions from code flash while simultaneously erasing or programming data flash sectors - essential for seamless firmware updates and runtime parameter logging without interrupting real-time control tasks in the R5F1027AGNA#25.

What are the key differences between the R5F1027AGNA#25 and the R5F1037AGNA#25?

The R5F1027AGNA#25 includes 2 KB data flash and a 2-channel DMA controller - features omitted in the R5F1037AGNA#25. In exchange, the R5F1037AGNA#25 adds one additional UART channel and expands simplified SPI/I²C count. Both share identical 16 KB code flash, 1.5 KB RAM, G-grade temperature rating, and package. The R5F1027AGNA#25 is preferred for local data logging; R5F1037AGNA#25 suits protocol-rich gateway roles.

How many analog input channels does the R5F1027AGNA#25 support, and what reference options are available?

The R5F1027AGNA#25 supports 11 analog input channels (ANI0–ANI3, ANI16–ANI22) with 10-bit resolution. It provides an internal 1.45 V reference voltage (AVREFP/AVREFM) usable for single-ended or differential ADC measurements - eliminating external reference ICs. External references up to VDD are also supported, and the ADC operates across the full 1.8–5.5 V supply range of the R5F1027AGNA#25.

Is the R5F1027AGNA#25 pin-compatible with other RL78/G12 24-pin variants such as the R5F1027AANA#25?

Yes, the R5F1027AGNA#25 is fully pin-compatible with all other 24-pin RL78/G12 variants in the HWQFN package (e.g., R5F1027AANA#25, R5F1027ADNA#25), sharing identical pinout, electrical characteristics, and mechanical footprint. Differences lie solely in temperature grade (G vs. A/D) and ordering suffix (#25 vs. #U5, #05, etc.), allowing drop-in replacement in existing designs targeting extended industrial temperature operation.