Renesas R5F12067ASP#30

Overview

R5F12067ASP#30 from Renesas Electronics is a 20-pin RL78/G15 16-bit microcontroller with 4 KB code flash, 1 KB data flash, and 1 KB RAM, operating from 2.4 V to 5.5 V. It integrates an 8/10-bit A/D converter (11 channels), two comparators, eight 16-bit timer channels, UART, simplified SPI (CSI), and simplified I²C interfaces - deployed in industrial temperature-grade embedded control for motor drives and sensor nodes.

For engineers reviewing the R5F12067ASP#30 datasheet, R5F12067ASP#30 pinout, R5F12067ASP#30 application, or R5F12067ASP#30 equivalent, key selection criteria include its 20-pin LSSOP package, −40°C to +105°C operation (G-grade), 4 KB flash capacity, dual comparator support, and integrated high-speed on-chip oscillator with ±1.0% accuracy at TA = −20°C to +85°C.

Technical Context

The R5F12067ASP#30 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling minimum instruction execution time of 0.0625 μs at 16 MHz. Its clock system supports multiple sources: high-speed on-chip oscillator (1–16 MHz), low-speed on-chip oscillator (15 kHz), and external crystal (X1/X2, 1–12 MHz) or EXCLK input (1–16 MHz).

It features a programmable peripheral I/O redirection register (PIOR) enabling flexible pin function assignment, including multiplexed analog inputs (ANI0–ANI10), interrupt pins (INTP0–INTP7), timer I/O (TI00–TI07/TO00–TO07), and serial interfaces (SCK00/SCL00/SDA00, SCK01/SCL01/SDA01). The device includes selectable power-on-reset (SPOR) with four voltage thresholds and on-chip debug via TOOL0/TOOLRxD/TOOLTxD pins.

Key Specifications

Pinout & Package

Package: 20-pin LSSOP (4.4 × 6.5 mm, 0.65-mm pitch), tray packaging (#30 suffix), G-grade industrial temperature rating (−40°C to +105°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F12067ASP#30, R5F12068ASP#30 offers double flash capacity for complex control algorithms without changing PCB layout, while R5F12067GSP#30 is a functionally identical industrial-grade variant with identical timing, voltage, and temperature behavior.

Availability

R5F12067ASP#30 is available at Aetrix Electronics and suitable for industrial motor control, sensor node deployment, and smart appliance UI development requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F12067ASP#30 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, 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 industrial control, home appliances, and sensor edge devices - emphasizing integrated analog peripherals, robust flash reliability, and seamless debug integration.

FAQ

What is the maximum operating frequency and instruction execution time of the R5F12067ASP#30?

The R5F12067ASP#30 supports a maximum high-speed on-chip oscillator frequency of 16 MHz, yielding a minimum instruction execution time of 0.0625 μs under those conditions. This timing assumes the RL78 CPU core's 3-stage pipeline is fully utilized and no wait states are inserted. The device also supports lower frequencies (1, 2, 4, 8 MHz) for reduced power consumption, extending instruction time up to 1.0 μs at 1 MHz operation.

Does the R5F12067ASP#30 support external crystal oscillation, and what are the valid frequency ranges?

Yes, the R5F12067ASP#30 supports external crystal or ceramic resonator operation via the X1 and 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. Crystal startup stabilization must be verified using the oscillation stabilization time counter (OSTC) register before switching from the on-chip oscillator.

How many analog input channels does the R5F12067ASP#30 support, and what is the A/D resolution?

The R5F12067ASP#30 supports 11 analog input channels (ANI0 through ANI10) with selectable 8-bit or 10-bit resolution. Conversion uses the internal 0.815 V reference (TYP.) or external reference voltages applied to IVREF0/IVREF1. The A/D converter operates across the full VDD range (2.4–5.5 V), maintaining linearity and monotonicity per datasheet specifications.

Can the R5F12067ASP#30 perform background data flash writes while executing code from main flash memory?

No, the R5F12067ASP#30 does not support background operation (BGO) for data flash writes. During data flash rewriting, instruction execution from code flash memory is halted. This means firmware must enter a safe state - disabling interrupts and halting real-time tasks - before initiating a write. The device guarantees 1,000,000 rewrite cycles and supports 32-bit word-level writes at VDD = 2.4–5.5 V.

What debug interface does the R5F12067ASP#30 provide, and which pins are used?

The R5F12067ASP#30 provides an on-chip debug interface using three dedicated pins: TOOL0 (bidirectional debug data), TOOLRxD (debug receive), and TOOLTxD (debug transmit). These pins enable full in-circuit debugging, flash programming, and real-time trace without requiring external JTAG or SWD adapters. Debug functionality is enabled by default on power-up and remains active until disabled via software configuration.