Renesas R5F10Y17DSP#70

Overview

R5F10Y17DSP#70 from Renesas Electronics is a 10-pin, 4 KB Flash, 512-byte RAM RL78/G10 microcontroller with RL78-S1 core, operating at 2.0–5.5 V and delivering true low-power performance (46 µA/MHz active, 0.56 µA STOP). It integrates 4-channel 10-bit ADC, UART, I²C, simplified SPI (CSI), 2-channel 16-bit timer array, and key interrupt support - deployed in battery-powered sensor nodes and industrial control interfaces.

For engineers reviewing the R5F10Y17DSP#70 datasheet, R5F10Y17DSP#70 pinout, R5F10Y17DSP#70 application, or R5F10Y17DSP#70 equivalent, this page delivers verified electrical specs, package mapping to LSSOP-10, functional pin roles, real-world use cases, and two validated alternative parts for design continuity and sourcing flexibility.

Technical Context

The R5F10Y17DSP#70 implements the RL78-S1 CISC core with 3-stage pipeline and Harvard architecture, enabling 78% of instructions in 1–2 clock cycles. Its high-speed on-chip oscillator delivers 20 MHz ±2% accuracy across –20°C to +85°C and full supply range (2.0–5.5 V), eliminating external crystal dependency for cost-sensitive designs.

It supports dual-clock domain operation: high-speed on-chip oscillator (1.25–20 MHz) and low-speed 15 kHz on-chip oscillator for ultra-low-power wake-up. Peripheral I/O redirection via PIOR register enables flexible pin assignment for UART, CSI, and timer I/O without hardware changes.

Key Specifications

Pinout & Package

Package: 10-pin plastic LSSOP (4.4 × 3.6 mm, 0.65 mm pitch), RoHS-compliant, industrial-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 R5F10Y17DSP#70, R5F10Y16DSP#70 offers memory reduction without peripheral trade-offs, while R5F10Y47DSP#70 expands analog and serial capability at the cost of pin count and board area - both require distinct PCB revisions and firmware validation.

Availability

R5F10Y17DSP#70 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat interfaces, portable medical monitors, and low-cost PLC I/O modules requiring stable component supply, long-term lifecycle support, and industrial-temperature grade reliability.

Supply support for R5F10Y17DSP#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 microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G10 product line targets cost-sensitive, ultra-low-power general-purpose applications - optimized for battery-operated devices and simple control systems where minimal footprint, low active/standby current, and rapid time-to-market are critical.

FAQ

What is the maximum operating frequency of the R5F10Y17DSP#70?

The R5F10Y17DSP#70 supports a maximum high-speed on-chip oscillator frequency of 20 MHz with ±2% accuracy across –20°C to +85°C and 2.0–5.5 V supply. When using external crystal or clock input (X1/EXCLK), max frequency is 20 MHz at VDD ≥ 2.7 V or 5 MHz at VDD ≥ 2.0 V. The R5F10Y17DSP#70 achieves 0.05 µs minimum instruction cycle time under these conditions.

Does the R5F10Y17DSP#70 include an internal voltage reference for ADC operation?

No, the R5F10Y17DSP#70 does not include an internal reference voltage generator. Its 10-bit ADC relies on VDD as the reference source and supports analog input up to 2.4 V. Internal reference (0.815 V) and comparator functions are exclusive to 16-pin RL78/G10 variants like R5F10Y47DSP#70 - not implemented in the 10-pin R5F10Y17DSP#70.

Can the R5F10Y17DSP#70 drive LEDs directly from its GPIO pins?

Yes, the R5F10Y17DSP#70 supports up to 20 mA sink current per I/O pin (P00–P04, P40) and 100 mA total sink current across all P00–P07 pins. This enables direct LED driving without external transistors in low-duty-cycle applications. However, P00, P01, P06, and P07 do not output high level in N-ch open-drain mode - verify pin configuration and current limits in the R5F10Y17DSP#70 datasheet before implementation.

Is the R5F10Y17DSP#70 pin-compatible with other RL78/G10 10-pin variants?

Yes, the R5F10Y17DSP#70 shares identical pinout, package (LSSOP-10), and peripheral mapping with other 10-pin RL78/G10 parts including R5F10Y14DSP#70 and R5F10Y16DSP#70. All use the same 10-pin configuration with P40, P125, P137, VSS, VDD, P00–P04. Firmware and hardware are interchangeable except for Flash/RAM size differences - no PCB change is required when upgrading from R5F10Y16DSP#70 to R5F10Y17DSP#70.

What debug interface does the R5F10Y17DSP#70 support?

The R5F10Y17DSP#70 supports 1-wire on-chip debug via the TOOL0 pin (P40), compatible with Renesas E2 emulator and E2 Lite debugger. Debug access requires no additional pins beyond the standard LSSOP-10 footprint. Note: On-chip debug functionality is intended for development only; Renesas advises against using it in mass-produced units due to potential flash endurance impact.