Renesas R5F11W67ASM#10

Overview

R5F11W67ASM#10 from Renesas Electronics is an ultra-low-power 16-bit RL78/G1M microcontroller with 4 KB flash memory, 512 B RAM, and 20-pin TSSOP package. It integrates an 8-channel 8/10-bit ADC, 4-channel 16-bit timer array, UART/CSI serial interfaces, and operates across –40°C to +85°C for consumer-grade embedded control in battery-powered sensors and small appliances.

For engineers reviewing the R5F11W67ASM#10 datasheet, R5F11W67ASM#10 pinout, R5F11W67ASM#10 application, or R5F11W67ASM#10 equivalent, key selection criteria include its 4 KB flash capacity, 20-pin TSSOP footprint, 2.0–5.5 V supply range, HALT/STOP low-power modes, and integrated real-time output (8 channels) - all confirmed for the R5F11W67ASM variant per Renesas R01DS0378EJ0100 Rev.1.00.

Technical Context

The R5F11W67ASM#10 implements the RL78-S1 CPU core with a 3-stage pipeline, supporting instruction execution times from 0.05 µs (@20 MHz) to 1.0 µs (@1 MHz). Its peripheral set includes a 12-bit interval timer, watchdog timer, and programmable clock/buzzer output (PCLBUZ0), all synchronized to the selectable high-speed on-chip oscillator (1.25–20 MHz).

It features 18 total I/O pins - including 14 N-ch open-drain outputs (VDD-tolerant), 6 P-ch open-drain outputs, and 2 CMOS inputs - with key return (KR0–KR7), analog input (ANI0–ANI7), and external interrupt (INTP0–INTP5) functions mapped to dedicated port pins per the RL78/G1M pin configuration.

Key Specifications

Pinout & Package

Package: 20-pin plastic TSSOP (4.4 × 6.5 mm, 0.65 mm pitch), lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F11W68ASM#10, the R5F11W67ASM#10 offers lower memory cost for fixed-function designs; versus R5F11Y67ASM#10, it retains full RTIO capability but lacks high-current drive - making it optimal for sensor-centric, timing-sensitive, and space-constrained applications where flash headroom is limited.

Availability

R5F11W67ASM#10 is available at Aetrix Electronics and suitable for smart home sensors, portable medical monitors, industrial control panels, and consumer appliance timers requiring stable component supply and long-term production continuity.

Supply support for R5F11W67ASM#10 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.

The RL78/G1M product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated consumer and industrial control applications - emphasizing minimal external components, integrated oscillators, and robust low-power operation.

FAQ

What is the maximum operating frequency of the R5F11W67ASM#10?

The R5F11W67ASM#10 supports a maximum high-speed on-chip oscillator frequency of 20 MHz, enabling a minimum instruction execution time of 0.05 µs. This frequency is selectable via option byte bits 0–2 and remains stable across the full operating voltage range (2.25–5.5 V) and temperature range (–40°C to +85°C), as specified in Renesas R01DS0378EJ0100 Rev.1.00 Section 2.2.1.

Does the R5F11W67ASM#10 support external crystal oscillators?

No, the R5F11W67ASM#10 does not support external crystal oscillators. It relies exclusively on its internal high-speed (1.25–20 MHz) and low-speed (15 kHz) on-chip oscillators. The datasheet confirms no external crystal input pins are provided, and all clock generation is derived from these integrated sources - eliminating BOM cost and layout complexity.

How many analog input channels does the R5F11W67ASM#10 have?

The R5F11W67ASM#10 includes 8 analog input channels (ANI0 through ANI7), each accessible via dedicated port pins (P07, P10–P13, P15–P16, P40). These channels support both 8-bit and 10-bit resolution ADC conversions with a 2.4–5.5 V reference range, and are shared with digital I/O functions per the peripheral I/O redirection register (PIOR) settings.

What low-power modes are available on the R5F11W67ASM#10?

The R5F11W67ASM#10 provides HALT mode (390–980 µA typical supply current) and STOP mode (0.61–2.35 µA typical), both retaining RAM contents and allowing wake-up via external interrupts (INTP0–INTP5), key return (KR0–KR7), or real-time output events. STOP mode disables the main oscillator and most peripherals while preserving the 12-bit interval timer and watchdog timer operation.

Is the R5F11W67ASM#10 pin-compatible with other RL78/G1M devices?

Yes, the R5F11W67ASM#10 is fully pin-compatible with all 20-pin TSSOP variants in the RL78/G1M family, including R5F11W68ASM#10 and R5F11Y67ASM#10. All share identical pin configuration, electrical characteristics, and mechanical footprint (PTSP0020JI-A), enabling drop-in replacement where memory or drive strength requirements align - as confirmed in Table 1-1 and Figure 1-1 of R01DS0378EJ0100 Rev.1.00.