Renesas R5F10Y44DSP#50

Overview

R5F10Y44DSP#50 from Renesas Electronics is a 16-pin, industrial-grade RL78/G10 16-bit microcontroller with 1 KB Flash, 128 B RAM, and ultra-low-power operation (46 µA/MHz active, 0.61 µA STOP mode). It integrates a 20 MHz high-speed on-chip oscillator (±2% over –40°C to +85°C), 7-channel 10-bit ADC, 4-channel 16-bit timer array, UART, two CSI interfaces, and I²C - deployed in battery-powered sensor nodes and smart metering front-ends.

For engineers reviewing the R5F10Y44DSP#50 datasheet, R5F10Y44DSP#50 pinout, R5F10Y44DSP#50 application, or R5F10Y44DSP#50 equivalent, key selection considerations include its SSOP-16 package, industrial temperature rating (–40°C to +85°C), 1 KB Flash/128 B RAM configuration, integrated analog peripherals (ADC, comparator), and support for low-voltage operation down to 2.0 V.

Technical Context

The R5F10Y44DSP#50 implements the RL78-S1 core - a Harvard-architecture CISC CPU 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 timing subsystem includes dual clock sources: a factory-trimmed high-speed on-chip oscillator (1.25–20 MHz, ±2% accuracy at 20 MHz) and a 15 kHz low-speed oscillator, plus external crystal (X1/X2) or EXCLK input up to 20 MHz. The 12-bit interval timer and watchdog timer operate independently of main clocks for reliable timekeeping in STOP mode.

Key Specifications

Pinout & Package

Package: 16-pin plastic SSOP (4.4 × 5.0 mm, 0.65 mm pitch), industrial-grade (D-suffix), embossed tape packaging (#50).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10Y44DSP#50, the R5F10Y46DSP#50 offers scalable memory headroom within identical power/peripheral constraints, while R5F10Y47DSP#50 adds analog timing features at the cost of higher unit price and unnecessary capability for simple sensor readout tasks.

Availability

R5F10Y44DSP#50 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, battery-powered HMI panels, and appliance control systems requiring stable component supply across long production lifecycles.

Supply support for R5F10Y44DSP#50 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 cost-sensitive, ultra-low-power embedded applications - delivering true sub-1 µA STOP mode and integrated analog peripherals to replace discrete sensor interface circuits in consumer and industrial controls.

FAQ

What is the maximum operating frequency and voltage range supported by the R5F10Y44DSP#50?

The R5F10Y44DSP#50 operates up to 20 MHz using its high-speed on-chip oscillator (±2% accuracy at –20°C to +85°C) and supports a wide supply range of 2.0 V to 5.5 V. At 2.0–2.7 V, max frequency is limited to 5 MHz to ensure timing compliance; full 20 MHz operation requires VDD ≥ 2.7 V. This flexibility allows direct interfacing with Li-ion, alkaline, or 5 V system rails without level-shifting.

Does the R5F10Y44DSP#50 include an integrated analog comparator?

No, the R5F10Y44DSP#50 does not include an integrated analog comparator. That feature is exclusive to the 16-pin RL78/G10 variants with 2 KB or 4 KB Flash (R5F10Y46DSP#50 and R5F10Y47DSP#50). The R5F10Y44DSP#50 provides 7-channel 10-bit ADC and internal reference (0.815 V), but lacks IVCMP0, IVREF0, and VCOUT0 pins - confirmed in Table 1-3 and Section 1.6 of the datasheet.

What debug interface does the R5F10Y44DSP#50 support, and how many pins are required?

The R5F10Y44DSP#50 supports a 1-wire on-chip debug interface using the TOOL0 pin (P40), requiring only a single dedicated trace plus VDD and VSS for connection to Renesas E2 emulator or compatible debug probes. This eliminates the need for SWD/JTAG headers, saving PCB space and simplifying bring-up - consistent with RL78-S1 core architecture and verified in Section 1.1 of the datasheet.

Can the R5F10Y44DSP#50 drive standard LEDs directly from its GPIO pins?

Yes, the R5F10Y44DSP#50 can drive standard 20 mA LEDs directly: its GPIO pins support up to 20 mA sink current per pin (IOL1 = 20 mA) and 10 mA source current (IOH1 = –10 mA) at VDD ≥ 4.0 V. For common-anode LED configurations, use P00–P07 in open-drain mode with external pull-up; for common-cathode, configure as push-pull with series resistor. Total sink current must not exceed 100 mA (P00–P07).

Is the R5F10Y44DSP#50 pin-compatible with other RL78/G10 16-pin variants like R5F10Y46DSP#50?

Yes, the R5F10Y44DSP#50 is fully pin-compatible with all RL78/G10 16-pin SSOP variants (R5F10Y44DSP#50, R5F10Y46DSP#50, R5F10Y47DSP#50), sharing identical pin count, layout, and function mapping per Table 1-3. Differences are internal (Flash/RAM size, peripheral enablement), allowing drop-in replacement during design iteration - confirmed in Figure 1-1 and Section 1.3.2 of the datasheet.