Renesas R5F11Y68ASM#30

Overview

R5F11Y68ASM#30 from Renesas is an RL78/G1N-series 16-bit microcontroller in 20-pin TSSOP package, featuring 8 KB flash memory, 1 KB RAM, 8-channel 8/10-bit ADC, UART/CSI serial interfaces, four 16-bit timers, and ultra-low-power HALT/STOP modes. It operates across –40°C to +85°C at 2.0–5.5 V supply and targets battery-powered sensor nodes and industrial control panels.

For engineers reviewing the R5F11Y68ASM#30 datasheet, R5F11Y68ASM#30 pinout, R5F11Y68ASM#30 application, or R5F11Y68ASM#30 equivalent, key selection criteria include its 8 KB flash capacity, high-current P-ch open-drain I/O (up to –120 mA per pin), 15 kHz low-speed oscillator for watchdog timing, and support for real-time output functions in RL78/G1M-compatible firmware environments.

Technical Context

The R5F11Y68ASM#30 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling minimum instruction execution time of 0.05 µs at 20 MHz. Its peripheral set includes a 12-bit interval timer, watchdog timer with dedicated low-speed on-chip oscillator, and programmable clock/buzzer output controller.

It supports flexible I/O configuration via peripheral I/O redirection register (PIOR), allowing dynamic assignment of functions like UART, CSI, timer I/O, and key return across 18 total I/O pins-including six P-ch open-drain outputs rated for high-current sink operation at 4.5–5.5 V.

Key Specifications

Pinout & Package

Package: 20-pin plastic TSSOP (4.4 × 6.5 mm, 0.65 mm pitch), RoHS-compliant, tray-packaged (#30).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F11Y67ASM#30, the R5F11Y68ASM#30 provides double flash/RAM for feature-rich firmware; versus R5F11W68ASM#30, it trades RTIO capability for industrial-grade P-ch sink strength-making it optimal for embedded HMI and actuator interface roles.

Availability

R5F11Y68ASM#30 is available at Aetrix Electronics and suitable for smart home sensor nodes, industrial control panels, energy meter interfaces, and appliance motor control subsystems requiring stable component supply and long-term lifecycle support.

Supply support for R5F11Y68ASM#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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets.

The RL78/G1N product line is designed for cost-sensitive, ultra-low-power embedded applications requiring robust I/O drive capability, integrated peripherals, and extended temperature operation - particularly where high-current sink functionality simplifies external component count.

FAQ

What is the maximum operating frequency of the R5F11Y68ASM#30?

The R5F11Y68ASM#30 supports a maximum high-speed on-chip oscillator frequency of 20 MHz, yielding a minimum instruction execution time of 0.05 µs under 2.7–5.5 V supply conditions. At lower supply voltages (2.0–2.7 V), the maximum usable frequency is reduced to 5 MHz to maintain timing compliance per the datasheet's AC characteristics table.

Does the R5F11Y68ASM#30 support UART and CSI serial interfaces simultaneously?

Yes, the R5F11Y68ASM#30 integrates one UART channel (RxD0/TxD0) and one CSI channel (SI00/SO00/SCK00) that can operate concurrently. The UART uses dedicated baud rate generation, while CSI supports master/slave modes with configurable clock polarity and phase - both share no hardware resources and may be enabled independently in firmware.

What is the purpose of the P-ch open-drain outputs on the R5F11Y68ASM#30?

The P-ch open-drain outputs on pins P00–P05 of the R5F11Y68ASM#30 provide high-current sinking capability (up to –120 mA per pin at 4.5–5.5 V), enabling direct drive of LEDs, relays, or logic-level MOSFET gates without external drivers. This reduces BOM cost and board area in industrial HMI and actuator interface designs.

Can the R5F11Y68ASM#30 operate from a 2.0 V supply?

The R5F11Y68ASM#30 is rated for 2.0–5.5 V operation, but functional use below 2.25 V is not recommended due to the selectable power-on-reset (SPOR) circuit's minimum detection voltage of 2.25 V. Operating at 2.0–2.24 V risks unreliable reset assertion and potential brown-out behavior during startup or voltage transients.

How many analog input channels does the R5F11Y68ASM#30 support?

The R5F11Y68ASM#30 supports eight analog input channels (ANI0–ANI7), compatible with its 8/10-bit A/D converter. All channels accept input voltages from 0 V to VDD (2.4–5.5 V), and conversion is supported in HALT mode to minimize system power during measurement cycles.