Renesas R5F10Y14ASP#X0

Overview

R5F10Y14ASP#X0 from Renesas is a 10-pin, 1 KB Flash, 128-byte RAM RL78/G10 16-bit microcontroller with ultra-low-power operation (46 µA/MHz active, 0.56 µA STOP), 2.0–5.5 V supply, and integrated 20 MHz ±2% on-chip oscillator. It features 4-channel 10-bit ADC, 1× UART, 1× I²C, 1× simplified SPI (CSI), 2× 16-bit timers, and key interrupt support - deployed in battery-powered sensor nodes and compact industrial controls.

For engineers reviewing the R5F10Y14ASP#X0 datasheet, R5F10Y14ASP#X0 pinout, R5F10Y14ASP#X0 application, or R5F10Y14ASP#X0 equivalent, this page delivers verified technical context, package-validated pin functions, real-world use cases, and two confirmed alternative parts - all aligned to the official R01DS0207EJ0321 Rev.3.21 specification.

Technical Context

The R5F10Y14ASP#X0 implements the RL78-S1 core - a Harvard-architecture CISC with 3-stage pipeline, where 78% of instructions execute in 1–2 clock cycles. It supports 8×8 multiply (2-cycle) and 16-bit barrel shift (2-cycle), enabling efficient signal processing in resource-constrained edge devices.

Its peripheral set is optimized for minimal pin count: 10-pin LSSOP package integrates 4 analog inputs (ANI0–ANI3), 6 key return lines (KR0–KR5), 2 external interrupts (INTP0, INTP1), and dual-function timer I/O (TI00/TO00, TI01/TO01), all mapped to P00–P04 and P40/P125/P137 without multiplexing overhead.

Key Specifications

Pinout & Package

Package: 10-pin plastic LSSOP (4.4 × 3.6 mm, 0.65 mm pitch), RoHS-compliant, tape-and-reel (#X0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10Y14ASP#X0, R5F10Y16ASP#X0 offers scalable memory within identical mechanical constraints, while R5F10Y44ASP#X0 trades pin-count efficiency for expanded analog and timing capabilities - making the former ideal for cost-optimized upgrades and the latter for feature-rich derivatives.

Availability

R5F10Y14ASP#X0 is available at Aetrix Electronics and suitable for battery-powered sensor nodes, industrial pushbutton panels, portable medical devices, and white goods control modules requiring stable component supply and long-term production continuity.

Supply support for R5F10Y14ASP#X0 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 solutions for automotive, industrial, and IoT markets.

The RL78/G10 product line targets ultra-low-power, cost-sensitive embedded control applications - delivering true low-power performance (down to 46 µA/MHz) in minimal-footprint packages for space- and energy-constrained designs.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F10Y14ASP#X0?

The R5F10Y14ASP#X0 operates up to 20 MHz using its internal high-speed oscillator, with guaranteed performance across a 2.0–5.5 V supply range. At 2.0–2.7 V, maximum clock frequency is limited to 5 MHz to ensure timing compliance; full 20 MHz operation requires ≥2.7 V. This dual-voltage tolerance enables direct use with primary batteries or regulated 3.3 V rails.

Does the R5F10Y14ASP#X0 support crystal oscillator input, and what are the implications?

No - the R5F10Y14ASP#X0 is a 10-pin variant and does not include X1/X2 pins for external crystal connection. It relies solely on its internal 20 MHz ±2% oscillator. This eliminates BOM cost and layout area for crystals but trades off long-term stability versus temperature/voltage drift; it remains fully adequate for UART timing, sensor polling, and non-precision control loops.

How many analog-to-digital converter (ADC) channels does the R5F10Y14ASP#X0 provide, and what is their resolution?

The R5F10Y14ASP#X0 provides four 10-bit analog input channels (ANI0–ANI3), with 3.4 µs conversion time and support for 2.4 V internal reference voltage. These channels are sufficient for simultaneous monitoring of temperature, humidity, supply voltage, and user interface potentiometers in compact systems without external ADCs.

Can the R5F10Y14ASP#X0 drive LEDs or small relays directly, and what are the current limits?

Yes - the R5F10Y14ASP#X0 supports up to 20 mA sink current per I/O pin (e.g., P00–P04), enabling direct LED driving or small relay coil control without external transistors. Total sink current across all P00–P04 pins must not exceed 60 mA at 4.0–5.5 V, and absolute maximum ratings prohibit exceeding 40 mA per pin under any condition.

What debug interface does the R5F10Y14ASP#X0 use, and how is it implemented?

The R5F10Y14ASP#X0 uses a single-wire on-chip debug interface routed to the P40 pin (TOOL0 function). This eliminates the need for multi-pin debug headers, reducing PCB area and assembly cost. Debugging requires Renesas E2 emulator or compatible tool; the interface supports full flash programming, breakpoint setting, and real-time register inspection during development.