Renesas R5F10Y47ASP#70

Overview

R5F10Y47ASP#70 from Renesas Electronics is a 16-pin, 4 KB Flash, 512-byte RAM RL78/G10 16-bit microcontroller optimized for ultra-low-power embedded control in space-constrained applications. It operates from 2.0 to 5.5 V, delivers 46 µA/MHz active current, supports 7-channel 10-bit ADC, 4-channel 16-bit timer array, and integrates UART, I²C, and two CSI (Simplified SPI) interfaces - deployed in battery-powered sensor nodes and smart home peripherals.

For engineers reviewing the R5F10Y47ASP#70 datasheet, R5F10Y47ASP#70 pinout, R5F10Y47ASP#70 application, or R5F10Y47ASP#70 equivalent, key selection criteria include its 16-pin SSOP package, 4 KB flash density, STOP-mode current of 0.61 µA at 3.0 V, integrated comparator and internal reference voltage (IVREF0), and support for key interrupt (KR0–KR5) and programmable buzzer output (PCLBUZ0).

Technical Context

The R5F10Y47ASP#70 implements the RL78-S1 core with Harvard architecture and 3-stage pipeline, enabling 78% of instructions in 1–2 clock cycles. Its clock system combines a high-speed on-chip oscillator (1.25–20 MHz, ±2% accuracy over –20 to +85°C) and low-speed 15 kHz oscillator, with optional external crystal (X1/X2) or EXCLK input up to 20 MHz.

Peripheral integration includes a 7-channel 10-bit ADC with 3.4 µs conversion time and internal 0.815 V reference (IVREF0), one analog comparator (IVCMP0/VCOUT0), four 16-bit timer channels supporting PWM, and dual CSI modules - all mapped to dedicated pins in the 16-pin SSOP package without functional overlap or shared resource contention.

Key Specifications

Pinout & Package

Package: 16-pin plastic SSOP (4.4 × 5.0 mm, 0.65 mm pitch), RoHS-compliant, 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 R5F10Y46ASP#70 and R5F10Y44ASP#70, the R5F10Y47ASP#70 provides 2× more Flash and RAM than the Y46 variant and adds critical analog features (comparator, IVREF0) absent in the Y44 - making it the only option among the three for designs requiring on-chip ratiometric sensing or firmware field upgrades.

Availability

R5F10Y47ASP#70 is available at Aetrix Electronics and suitable for smart home controllers, industrial HMI panels, portable medical devices, and battery-powered sensor nodes requiring stable component supply and long-term lifecycle support.

Supply support for R5F10Y47ASP#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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with over 40 years of microcontroller innovation.

The RL78/G10 product line targets cost-sensitive, ultra-low-power general-purpose applications - designed specifically for compact, battery-operated devices needing rich analog integration, robust I/O, and seamless toolchain support without premium pricing.

FAQ

What is the maximum operating frequency of the R5F10Y47ASP#70?

The R5F10Y47ASP#70 supports a maximum high-speed on-chip oscillator frequency of 20 MHz (±2% accuracy from –20°C to +85°C) and accepts external clock inputs up to 20 MHz. At 20 MHz, its minimum instruction execution time is 0.05 µs, enabling responsive real-time control in motor timing or sensor sampling loops. The R5F10Y47ASP#70 achieves this performance while maintaining 46 µA/MHz active current efficiency.

Does the R5F10Y47ASP#70 include an internal voltage reference for the ADC?

Yes, the R5F10Y47ASP#70 includes an internal 0.815 V (typical) reference voltage source (IVREF0) routed to pin P04. This reference is used by both the 10-bit ADC and the integrated analog comparator, enabling ratiometric measurements independent of VDD fluctuations. The R5F10Y47ASP#70 leverages IVREF0 to maintain ADC accuracy across battery discharge profiles in portable applications.

Can the R5F10Y47ASP#70 drive LEDs directly without external drivers?

Yes, the R5F10Y47ASP#70 supports up to 20 mA sink current per I/O pin (e.g., P00–P07, P40–P41), with total port current limits defined per group. Its CMOS I/O structure allows direct LED driving in common-anode configurations. The R5F10Y47ASP#70 also provides N-ch open-drain mode on select pins for interfacing with higher-voltage indicators - verified in electrical specs Table 2.3.1.

What debug interface does the R5F10Y47ASP#70 use?

The R5F10Y47ASP#70 uses a single-pin 1-wire on-chip debug interface accessed via the TOOL0 pin (P40). This interface supports full in-circuit debugging, flash programming, and real-time variable monitoring using Renesas E2 studio and the E2 Lite emulator. The R5F10Y47ASP#70 requires no JTAG header or additional debug circuitry, simplifying PCB layout and reducing BOM count.

Is the R5F10Y47ASP#70 compatible with external crystal oscillators?

Yes, the R5F10Y47ASP#70 supports external crystal oscillation via X1 and X2 pins (P121 and P122) for main system clock generation at frequencies from 1 to 20 MHz (at VDD ≥ 2.7 V) or 1 to 5 MHz (at VDD ≥ 2.0 V). The R5F10Y47ASP#70 also accepts external square-wave clock input on EXCLK (P122), providing flexibility for precision timing or synchronization with system clocks.