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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Renesas R5F10Y46ASP#50

Name: R5F10Y46ASP#50
Brand: Renesas
SKU: R5F10Y46ASP#50
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: R5F10Y46ASP#50

Manufacturer:: Renesas

Category:: Microcontrollers

Package:: 16-SSOP (0.173", 4.40mm Width)

Datasheet:: R5F10Y46ASP#50.pdf

Description:: IC MCU 16BIT 2KB FLASH 16SSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

R5F10Y46ASP#50 from Renesas Electronics is a 16-pin, 2 KB Flash, 256-byte RAM RL78/G10 16-bit microcontroller with ultra-low-power operation (46 µA/MHz), 2.0–5.5 V supply range, and integrated 20 MHz high-speed on-chip oscillator ±2% accuracy. It features 7-channel 10-bit ADC, 4-channel 16-bit timer array, UART, two CSI interfaces, I²C, and key interrupt support - deployed in battery-powered sensor nodes and smart home control modules.

For engineers reviewing the R5F10Y46ASP#50 datasheet, R5F10Y46ASP#50 pinout, R5F10Y46ASP#50 application, or R5F10Y46ASP#50 equivalent, this page delivers verified specifications, package-confirmed pin functions, real-world use cases, and two validated alternative parts for design continuity and sourcing flexibility.

Technical Context

The R5F10Y46ASP#50 implements the RL78-S1 core - a Harvard-architecture CISC with 3-stage pipeline, where 78% of instructions execute in 1–2 clock cycles. Its power management includes STOP mode (0.61 µA at 3.0 V) and HALT mode (360–900 µA), enabled by selectable power-on reset (SPOR) with four voltage thresholds and low-speed 15 kHz watchdog timer.

Peripherals are tightly coupled to the core via dedicated bus arbitration: SAU0 provides UART/CSI/I²C with independent clock domains; TAU0 delivers four 16-bit timer channels supporting PWM, input capture, and interval timing; and the 10-bit ADC achieves 3.4 µs conversion with internal 0.815 V reference - all operating across –40°C to +85°C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	RL78-S1 16-bit CISC with 3-stage pipeline; 78% instructions in 1–2 cycles enables deterministic real-time response.
Flash / RAM	2 KB code flash memory and 256-byte RAM - sufficient for compact firmware with retained data during STOP mode.
Supply Current	46 µA/MHz active current; 0.61 µA STOP mode (VDD = 3.0 V) - extends battery life in always-on sensing applications.
ADC Performance	7-channel 10-bit ADC with 3.4 µs conversion time and internal 0.815 V reference - supports precision analog monitoring without external references.
Oscillator Accuracy	20 MHz high-speed on-chip oscillator ±2% over –20°C to +85°C - eliminates crystal cost and layout area while meeting UART baud tolerance.
Timer Resources	Four 16-bit timer channels (TAU0) with PWM output on three channels - enables motor control, LED dimming, and signal generation from single chip.
I/O Capability	14 GPIO pins including 4-key interrupt inputs (KR0–KR5), N-ch open-drain support, and 20 mA sink per pin - drives LEDs, relays, and digital sensors directly.

Pinout & Package

Package: 16-pin plastic SSOP (4.4 × 5.0 mm, 0.65 mm pitch), RoHS-compliant, industrial-grade –40°C to +85°C operation.

Pin/Terminal	Circuit Role	Design Meaning
P00	GPIO / UART TX / INT	Primary serial transmit pin; doubles as external interrupt input (INTP1) for wake-up or event capture.
P01	GPIO / ADC0 / UART RX / I²C SDA	Analog input channel 0; also handles UART receive and I²C data - enables mixed-signal communication with minimal pins.
P02	GPIO / ADC1 / SCL / PCLBUZ0	Supports I²C clock output or programmable buzzer clock (2.44 kHz–10 MHz); critical for audio feedback or timing signals.
P03	GPIO / ADC2 / TO00 / KR4	Timer output channel 0 and key return line 4 - allows direct drive of external circuitry or keypad scanning.
P04	GPIO / ADC3 / TI01 / TO01 / KR5 / IVREF0	Multi-function pin: ADC input, timer I/O, key return, and internal comparator reference - central to analog interface design.
P05	GPIO / ADC4 / TI02 / TO02 / SO01	Second CSI channel output and timer I/O - expands serial peripheral control beyond primary UART/CSI00.
P06	GPIO / ADC5 / INT / SCLA0	I²C alternate clock line and interrupt input - supports multi-master I²C topologies and fast event response.
P07	GPIO / ADC6 / TO03 / SDAA0 / SCK01	Third CSI channel clock and I²C data line - enables dual I²C buses or daisy-chained sensor networks.
P40	GPIO / KR0 / TOOL0 / TI01/TO01	Debug interface (TOOL0) and key return 0 - essential for in-circuit programming and human-interface polling.
P41	GPIO / TI03 / INTP2	Dedicated external interrupt input with timer input capability - used for pulse counting or emergency shutdown detection.
P125	RESET / KR1	Active-low reset with key return function - simplifies reset circuitry and enables shared pull-up with keypad matrix.
P137	GPIO / TI00 / INTP0	Primary external interrupt source and timer input - commonly used for zero-crossing detection or encoder quadrature input.
VDD	Power Supply	2.0–5.5 V main supply; supports direct connection to Li-ion, alkaline, or regulated 3.3 V rails.
VSS	Ground	System ground reference; decoupling capacitor placement near this pin is mandatory for stable ADC and oscillator operation.
VCOUT0	Comparator Output	Open-drain output of integrated comparator - drives logic-level alerts or triggers external circuitry without pull-up resistors.

Key Features

Feature	Design Value
Ultra-Low-Power STOP Mode	0.61 µA at 3.0 V with RAM retention - enables years of operation on coin-cell batteries in IoT endpoints.
On-Chip Debug Interface	1-wire TOOL0 pin enables full debug and flash programming without JTAG header - reduces PCB footprint and BOM cost.
Hardware Key Interrupt Controller	6-key return inputs (KR0–KR5) with automatic de-bounce and wake-up - eliminates software polling overhead in HMI designs.
Integrated Comparator	Single-channel comparator with internal reference (IVREF0) and output (VCOUT0) - replaces discrete op-amp solutions for threshold detection.
Configurable Peripheral I/O Redirection	PIOR register enables dynamic remapping of UART, CSI, and timer functions to alternate pins - increases layout flexibility and reuse across variants.

Applications

Smart Thermostat Sensor Node	Wireless Door Lock Controller
Use Scenario: Battery-powered wall-mounted unit measuring temperature/humidity and reporting via sub-GHz RF link. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, RF transceiver timing, and low-power sleep/wake cycles. Use Value: 46 µA/MHz active current and 0.61 µA STOP mode extend CR2032 battery life to >5 years; integrated 10-bit ADC eliminates external signal conditioning.	Use Scenario: Secure access module using capacitive keypad, solenoid driver, and BLE interface. IC Role / Device Role / Timing Role: Keypad scanner, solenoid timing controller, and BLE UART bridge with secure firmware update capability. Use Value: 6-key interrupt inputs (KR0–KR5) enable hardware-accelerated keypad scan; 20 mA sink per I/O drives solenoid drivers directly without external transistors.
Industrial Panel Meter	Portable Medical Glucometer
Use Scenario: DIN-rail mounted meter reading analog process signals (4–20 mA, 0–10 V) and displaying values on LCD. IC Role / Device Role / Timing Role: Analog front-end processor, display controller, and communication gateway (UART/Modbus RTU). Use Value: 7-channel 10-bit ADC with 3.4 µs conversion supports real-time sampling of multiple sensors; UART with 3.3 Mbps theoretical rate ensures fast data upload.	Use Scenario: Handheld blood glucose analyzer with strip insertion detection, electrochemical measurement, and OLED display. IC Role / Device Role / Timing Role: Precision analog measurement engine, strip bias control, and user interface manager. Use Value: Internal 0.815 V reference enables accurate glucose ADC readings without calibration drift; VCOUT0 comparator detects strip insertion with <1 µs latency.

Smart Thermostat Sensor Node

Wireless Door Lock Controller

Use Scenario: Battery-powered wall-mounted unit measuring temperature/humidity and reporting via sub-GHz RF link.

IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, RF transceiver timing, and low-power sleep/wake cycles.

Use Value: 46 µA/MHz active current and 0.61 µA STOP mode extend CR2032 battery life to >5 years; integrated 10-bit ADC eliminates external signal conditioning.

Use Scenario: Secure access module using capacitive keypad, solenoid driver, and BLE interface.

IC Role / Device Role / Timing Role: Keypad scanner, solenoid timing controller, and BLE UART bridge with secure firmware update capability.

Use Value: 6-key interrupt inputs (KR0–KR5) enable hardware-accelerated keypad scan; 20 mA sink per I/O drives solenoid drivers directly without external transistors.

Industrial Panel Meter

Portable Medical Glucometer

Use Scenario: DIN-rail mounted meter reading analog process signals (4–20 mA, 0–10 V) and displaying values on LCD.

IC Role / Device Role / Timing Role: Analog front-end processor, display controller, and communication gateway (UART/Modbus RTU).

Use Value: 7-channel 10-bit ADC with 3.4 µs conversion supports real-time sampling of multiple sensors; UART with 3.3 Mbps theoretical rate ensures fast data upload.

Use Scenario: Handheld blood glucose analyzer with strip insertion detection, electrochemical measurement, and OLED display.

IC Role / Device Role / Timing Role: Precision analog measurement engine, strip bias control, and user interface manager.

Use Value: Internal 0.815 V reference enables accurate glucose ADC readings without calibration drift; VCOUT0 comparator detects strip insertion with <1 µs latency.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
R5F10Y47ASP#50	4 KB Flash, 512-byte RAM, same package and peripherals - higher memory headroom for complex firmware.	Required when bootloader, OTA updates, or expanded sensor fusion algorithms exceed 2 KB code space.	Select R5F10Y47ASP#50 if future firmware growth or safety certification (e.g., IEC 60730) mandates redundant code storage.
R5F10Y44ASP#50	1 KB Flash, 128-byte RAM, identical peripheral set and pinout - reduced memory footprint at lower cost.	Suitable for fixed-function devices with static firmware (e.g., simple timers, basic sensor readouts).	Choose R5F10Y44ASP#50 for cost-sensitive, high-volume production where feature set fits within 1 KB and no field updates are needed.

Compared with R5F10Y46ASP#50, R5F10Y47ASP#50 offers scalable memory for evolving firmware requirements, while R5F10Y44ASP#50 delivers cost optimization for immutable, minimal-feature implementations - both retain identical timing, I/O, and analog performance.

Availability

R5F10Y46ASP#50 is available at Aetrix Electronics and suitable for battery-powered sensor nodes, smart home controllers, industrial panel meters, and portable medical devices requiring stable component supply and long-term industrial temperature support.

Supply support for R5F10Y46ASP#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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.

The RL78/G10 product line targets ultra-low-power general-purpose applications - designed specifically for cost-sensitive, battery-operated systems needing robust analog integration, minimal external components, and industrial-grade reliability.

FAQ

What is the maximum operating frequency of the R5F10Y46ASP#50?

The R5F10Y46ASP#50 supports a maximum high-speed on-chip oscillator frequency of 20 MHz with ±2% accuracy across –20°C to +85°C. When using an external crystal (X1/X2), it operates up to 20 MHz at VDD ≥ 2.7 V or up to 5 MHz at VDD ≥ 2.0 V. The minimum instruction execution time is 0.05 µs under these conditions, enabling real-time responsiveness in time-critical applications.

Does the R5F10Y46ASP#50 include an integrated comparator?

Yes, the R5F10Y46ASP#50 includes one integrated comparator (COMP) with dedicated input pins (IVCMP0), reference input (IVREF0), and open-drain output (VCOUT0). This comparator operates independently of the ADC and supports both high-speed and low-speed modes, drawing only 6.5 µA (high-speed) or 1.7 µA (low-speed) at VDD = 5.0 V - enabling precise threshold detection without external components.

What are the supported communication interfaces on the R5F10Y46ASP#50?

The R5F10Y46ASP#50 supports UART (7-/8-bit), two Simplified SPI (CSI) channels, one I²C interface (IICA0), and one simplified I²C (IIC00). All interfaces share the SAU0 peripheral unit and operate concurrently. Notably, the 16-pin package adds IICA0 (SCLA0/SDAA0) and second CSI (CSI01), unlike the 10-pin variant - enabling dual I²C buses or simultaneous sensor and display communication.

Can the R5F10Y46ASP#50 operate from a 2.0 V supply?

Yes, the R5F10Y46ASP#50 is fully specified for operation from 2.0 V to 5.5 V. At 2.0 V, the high-speed on-chip oscillator runs up to 5 MHz, and the external crystal oscillator supports up to 5 MHz. DC characteristics (e.g., IOL = 2.4 mA per pin, VOH = VDD – 0.5 V) and AC timing (e.g., TCY ≤ 0.8 µs) remain guaranteed - making it suitable for single-cell alkaline or lithium primary battery systems.

Is the R5F10Y46ASP#50 pin-compatible with other RL78/G10 variants?

Yes, the R5F10Y46ASP#50 is pin-compatible with all 16-pin RL78/G10 variants in SSOP package (e.g., R5F10Y44ASP#50, R5F10Y47ASP#50), sharing identical pin count, physical layout, and function mapping. Differences are limited to Flash/RAM size and optional features (e.g., 12-bit interval timer present only in R5F10Y47), allowing seamless migration within the same PCB footprint.

R5F10Y46ASP#50 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Package/Case:: 16-SSOP (0.173", 4.40mm Width)

Series:: RL78/G10

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Core Processor:: RL78

Core Size:: 16-Bit

Speed:: 20MHz

Connectivity:: CSI, I2C, LINbus, UART/USART

Peripherals:: DMA, LVD, POR, PWM, WDT

Number of I/O:: 10

Program Memory Size:: 2KB (2K x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 256 x 8

Voltage - Supply (Vcc/Vdd):: 2V ~ 5.5V

Data Converters:: A/D 7x8/10b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

R5F10Y46ASP#50 FAQ

1.How can I place an order for R5F10Y46ASP#50 through Aetrix?

Please submit a Request for Quotation (RFQ) for R5F10Y46ASP#50 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for R5F10Y46ASP#50 reliable?

The price and inventory of R5F10Y46ASP#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10Y46ASP#50 is usually 5 days.

3.What payment methods are accepted for R5F10Y46ASP#50?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10Y46ASP#50 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for R5F10Y46ASP#50?

R5F10Y46ASP#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your R5F10Y46ASP#50 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for R5F10Y46ASP#50?

For technical support, including R5F10Y46ASP#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10Y46ASP#50 requirements.

6.How does Aetrix verify that R5F10Y46ASP#50 is sourced from the original manufacturer or authorized distributors?

All R5F10Y46ASP#50 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R5F10Y46ASP#50 meets industry standards.

7.What is the process for return or replacement of R5F10Y46ASP#50?

All R5F10Y46ASP#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10Y46ASP#50, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The R5F10Y46ASP#50 part is unused and in its original packaging.

Return procedure for R5F10Y46ASP#50:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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