Renesas R5F11Y67DSM#50

Overview

R5F11Y67DSM#50 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 across –40°C to +85°C for industrial applications.

For engineers reviewing the R5F11Y67DSM#50 datasheet, R5F11Y67DSM#50 pinout, R5F11Y67DSM#50 application, or R5F11Y67DSM#50 equivalent, this part delivers verified industrial-grade timing, analog sensing, and serial control in compact TSSOP with selectable power-on-reset, on-chip debug, and high-accuracy internal oscillator (±2.0% over –20°C to +85°C).

Technical Context

The R5F11Y67DSM#50 implements the RL78-S1 CPU core with CISC architecture and 3-stage pipeline, 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 a dedicated low-speed on-chip oscillator (15 kHz ±15%) for watchdog timer operation independent of main clock.

Its peripheral set includes a 4-channel TAU (Timer Array Unit) with PWM-capable outputs, real-time output capability (not present in G1N), and programmable clock/buzzer output (PCLBUZ0) configurable from 2.44 kHz to 10 MHz - all managed via register-level configuration without external components.

Key Specifications

Pinout & Package

Package: 20-pin plastic TSSOP (PTSP0020JI-A), 4.4 mm × 6.5 mm body, 0.65 mm lead pitch, industrial temperature grade (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F11Y67DSM#50, R5F11Y68DSM#50 offers scalable memory without layout impact, while R5F11W67DSM#50 introduces RTIO but requires firmware and pin assignment validation - making the former ideal for cost-optimized industrial control and the latter for timing-critical motion systems.

Availability

R5F11Y67DSM#50 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostats, programmable power monitors, and low-cost motor starters requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F11Y67DSM#50 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 group - including R5F11Y67DSM#50 - was designed specifically for cost-sensitive industrial control applications demanding ultra-low power, integrated analog peripherals, and robust operation across extended temperature ranges.

FAQ

What is the maximum operating frequency of the R5F11Y67DSM#50?

The R5F11Y67DSM#50 supports a maximum high-speed on-chip oscillator frequency of 20 MHz, delivering a minimum instruction execution time of 0.05 µs when VDD ≥ 2.7 V. At lower supply voltages (2.0–2.7 V), the maximum usable frequency is reduced to 5 MHz per datasheet specification R01DS0378EJ0100 Rev.1.00 Section 1.1.

Does the R5F11Y67DSM#50 include an on-chip debug interface?

Yes, the R5F11Y67DSM#50 includes a fully integrated on-chip debug function supporting flash programming, breakpoint setting, and real-time variable monitoring via a single-wire interface. This eliminates the need for external debug probes during development, though Renesas cautions against using it in mass-produced units due to flash endurance limits.

What are the ADC capabilities of the R5F11Y67DSM#50?

The R5F11Y67DSM#50 features an 8/10-bit resolution successive-approximation A/D converter with 8 analog input channels (ANI0–ANI7), operating across VDD = 2.4–5.5 V. It supports single-shot and continuous conversion modes, with typical operating current of 0.50–1.90 mA depending on VDD and sampling speed.

Can the R5F11Y67DSM#50 drive an LCD directly?

No - the R5F11Y67DSM#50 does not include a dedicated LCD segment driver. While its N-ch open-drain I/O pins (e.g., P00–P05) can source current for simple common-anode static displays, it lacks built-in bias generation, COM/SEG multiplexing, or charge-pump circuitry required for standard multiplexed LCDs. External driver ICs are recommended for full-segment displays.

What is the purpose of the Peripheral I/O Redirection Register (PIOR) in the R5F11Y67DSM#50?

The PIOR register in the R5F11Y67DSM#50 enables dynamic assignment of alternate functions (e.g., UART, CSI, timer outputs) to specific pins at runtime. With PIOR set to 00H (default), pin functions follow the fixed mapping shown in Figure 1-1; non-zero values allow remapping to optimize PCB layout or resolve signal routing conflicts without hardware changes.