Renesas R5F11Y67DSM#70

Overview

R5F11Y67DSM#70 from Renesas Electronics is an ultra-low-power 16-bit RL78/G1N microcontroller in a 20-pin TSSOP package, featuring 4 KB flash memory, 512 B RAM, 8-channel 8/10-bit ADC, 4-channel 16-bit timer, UART/CSI serial interfaces, and operation from −40°C to +85°C for industrial applications.

For engineers reviewing the R5F11Y67DSM#70 datasheet, R5F11Y67DSM#70 pinout, R5F11Y67DSM#70 application, or R5F11Y67DSM#70 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation value, and two confirmed alternative parts with precise functional and application-level distinctions.

Technical Context

The R5F11Y67DSM#70 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting minimum instruction execution time of 0.05 µs at 20 MHz (VDD ≥ 2.7 V) and address space up to 1 MB. It integrates selectable power-on-reset (SPOR) with four detection voltage options (2.25–4.45 V) and dual on-chip oscillators: high-speed (1.25–20 MHz, ±2% accuracy) and low-speed (15 kHz, ±15%).

This device belongs to the RL78/G1N group-distinguished from G1M by absence of real-time output (RTIO) channels and inclusion of high-current P-ch open-drain outputs on P00–P05 (−120 mA per pin, 4.5–5.5 V), enabling direct LED/matrix display drive without external drivers. Its I/O configuration includes 18 total pins: 16 CMOS I/O (14 N-ch open-drain, 6 P-ch open-drain), plus VDD and VSS.

Key Specifications

Pinout & Package

Package: 20-pin plastic TSSOP (4.4 × 6.5 mm, 0.65 mm pitch), RoHS-compliant, surface-mountable with standard reflow profile.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F11Y67DSM#70, R5F11Y68DSM#70 offers scalable memory without hardware redesign, while R5F11W67DSM#70 trades display drive strength for deterministic RTIO timing - making each optimal for distinct industrial subsystem roles.

Availability

R5F11Y67DSM#70 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostats, energy meter front-ends, and motorized valve actuators requiring stable component supply across extended product lifecycles.

Supply support for R5F11Y67DSM#70 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 Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G1N series is designed specifically for cost-sensitive, ultra-low-power industrial control applications where high-current I/O, robust reset behavior, and long-term supply stability are critical - not general-purpose computing.

FAQ

What is the maximum operating frequency and corresponding instruction cycle time for R5F11Y67DSM#70?

The R5F11Y67DSM#70 supports a maximum high-speed on-chip oscillator frequency of 20 MHz. At VDD ≥ 2.7 V, its minimum instruction execution time is 0.05 µs - enabling tight control loops and responsive interrupt handling. This timing is guaranteed under specified voltage and temperature conditions per the R01DS0378EJ0100 datasheet Section 2.4.

Does R5F11Y67DSM#70 support real-time output (RTIO) functionality?

No, R5F11Y67DSM#70 does not support real-time output (RTIO). RTIO is exclusive to the RL78/G1M group (e.g., R5F11W67DSM#70). The R5F11Y67DSM#70 belongs to the RL78/G1N group, which omits RTIO but adds high-current P-ch open-drain outputs on P00–P05 for direct LED/display driving.

What are the valid VDD operating ranges and why is 2.25 V cited instead of 2.0 V?

R5F11Y67DSM#70 is rated for VDD = 2.0–5.5 V, but Renesas specifies use within 2.25–5.5 V due to the selectable power-on-reset (SPOR) circuit's lowest rising-edge detection voltage (VSPOR) of 2.25 V. Operating below 2.25 V risks unreliable reset assertion, potentially causing undefined startup behavior.

Can R5F11Y67DSM#70 drive LEDs directly, and what current capability does it offer?

Yes, R5F11Y67DSM#70 can drive LEDs directly using its P-ch open-drain outputs on P00–P05. At VDD = 4.5–5.5 V, each pin supports −120 mA sink current (per Renesas R01DS0378EJ0100 Section 2.3.2), enabling multiplexed 7-segment or dot-matrix display control without external drivers.

What debug interface does R5F11Y67DSM#70 provide, and is it production-safe?

R5F11Y67DSM#70 includes an on-chip debug function accessible via SWD interface, supporting programming, breakpoints, and real-time variable inspection. However, Renesas explicitly cautions against using this function in mass-produced units due to finite flash rewrite endurance - it is intended solely for development and evaluation.