Renesas R5F12008ANS#30

Overview

R5F12008ANS#30 from Renesas Electronics is an 8-pin, 8 KB flash RL78/G15 16-bit microcontroller with integrated 1 KB RAM, 1 KB data flash, and a high-speed on-chip oscillator (1–16 MHz). It operates from 2.4 V to 5.5 V, supports HALT/STOP low-power modes, and delivers true low-power performance (54 µA/MHz at 125°C) for battery-powered sensor nodes and industrial control interfaces.

For engineers reviewing the R5F12008ANS#30 datasheet, R5F12008ANS#30 pinout, R5F12008ANS#30 application, or R5F12008ANS#30 equivalent, this page provides verified technical context, validated pin functions, real-world use cases in consumer and industrial systems, and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The R5F12008ANS#30 implements the RL78 CPU core with a 3-stage CISC pipeline, 1 MB address space, and four banks of 8-bit general-purpose registers. Its clock system integrates a selectable high-speed on-chip oscillator (±1.0% accuracy at −20 to +85°C), a 15 kHz low-speed oscillator, and optional external crystal (X1/X2) or EXCLK input up to 12 MHz.

Peripheral integration includes an 8/10-bit A/D converter with 3 analog inputs (ANI0, ANI2, ANI3), one comparator (IVCMP0/IVREF0), eight 16-bit timer channels (TAU0), one 12-bit interval timer, one watchdog timer, UART0, simplified I²C (IIC00), simplified SPI (CSI00), and on-chip debug via TOOL0/TOOLRxD/TOOLTxD pins - all mapped to its 6 usable I/O pins in the 8-pin LSSOP package.

Key Specifications

Pinout & Package

Package: 8-pin LSSOP (4.4 × 3.6 mm, 0.65-mm pitch), RoHS-compliant, tray-packaged (#30 specification).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F12007ANS#30, the R5F12008ANS#30 provides double code flash capacity without altering pin compatibility or power profile; versus R5F12018ASP#30, it trades I/O count for compactness and lower component count in space-constrained designs.

Availability

R5F12008ANS#30 is available at Aetrix Electronics and suitable for smart home sensors, industrial motor interfaces, and consumer appliance control panels requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for R5F12008ANS#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 is a global semiconductor leader specializing in microcontrollers, analog, and power management ICs for automotive, industrial, and IoT applications.

The RL78/G15 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and thermally demanding embedded systems - with emphasis on integrated peripherals, robust reset, and simplified development.

FAQ

What is the maximum operating frequency and accuracy of the on-chip oscillator in R5F12008ANS#30?

The R5F12008ANS#30 features a factory-trimmed high-speed on-chip oscillator selectable from 1 MHz to 16 MHz. At TA = −20 to +85°C and VDD = 2.4–5.5 V, its frequency accuracy is ±1.0% - sufficient for UART communication, PWM generation, and real-time control without external crystal components. The oscillator is fully integrated and requires no external loading capacitors.

Does R5F12008ANS#30 support in-circuit debugging, and which pins are used?

Yes, the R5F12008ANS#30 supports single-wire on-chip debugging using three dedicated pins: TOOL0 (bidirectional debug data), TOOLRxD (debug receive), and TOOLTxD (debug transmit). These share physical pins with P40, P01, and P03 respectively, enabling full programming and real-time trace without adding JTAG headers or extra PCB area.

How many analog input channels does R5F12008ANS#30 provide, and what are their design limitations?

The R5F12008ANS#30 provides three analog input channels: ANI0 (on P01), ANI2 (on P03), and ANI3 (on P04). All support 8/10-bit resolution and operate across the full 2.4–5.5 V VDD range. The internal 0.815 V reference (IVREF0) is available for ratiometric measurements, but external reference must be supplied if higher precision or wider dynamic range is required.

Can R5F12008ANS#30 drive a buzzer directly, and what is the electrical specification?

Yes, the R5F12008ANS#30 integrates a programmable clock/buzzer output (PCLBUZ0) on P03. It can generate square-wave tones up to 10 MHz (when fMAIN = 10 MHz) with CMOS-level drive strength. The pin supports N-ch open-drain configuration with VDD-tolerant output, allowing direct connection to piezoelectric buzzers without external drivers - subject to 40 mA per-pin sink/source limits per absolute maximum ratings.

What is the data flash endurance and rewrite granularity of R5F12008ANS#30?

The R5F12008ANS#30 includes 1 KB of data flash memory rated for 1,000,000 rewrite cycles (typical). Rewrites occur in 32-bit units, and erasure must precede writing - with each block sized at 512 bytes. Background operation (BGO) is not supported, meaning code execution halts during data flash writes, requiring careful state management in time-critical applications.