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Renesas R5F11Y68ASM#50
- Part No.:
- R5F11Y68ASM#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F11Y68ASM#50.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,415
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Product details
Overview
R5F11Y68ASM#50 from Renesas Electronics is an RL78/G1N-series 16-bit microcontroller in 20-pin TSSOP package, featuring 8 KB flash memory, 1 KB RAM, ultra-low-power operation (0.61 µA in STOP mode), 8-channel 8/10-bit ADC, and integrated UART/CSI serial interfaces - deployed in battery-powered sensor nodes and industrial control panels requiring compact footprint and extended runtime.
For engineers reviewing the R5F11Y68ASM#50 datasheet, R5F11Y68ASM#50 pinout, R5F11Y68ASM#50 application, or R5F11Y68ASM#50 equivalent, key selection criteria include its 20-pin TSSOP-0.65mm package, VDD = 2.0–5.5 V supply range, −40 to +85°C operating temperature, 8 KB flash capacity, and RL78/G1N-specific high-current P-ch open-drain I/O capability on P00–P05 pins.
Technical Context
The R5F11Y68ASM#50 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting minimum instruction execution time of 0.05 µs at 20 MHz. It integrates a selectable power-on-reset (SPOR) circuit with four detection voltage options (2.25 V to 4.45 V) and dual on-chip oscillators: high-speed (1.25–20 MHz, ±2% accuracy) and low-speed (15 kHz ±15%).
Its peripheral set includes four 16-bit timer channels, one 12-bit interval timer, one watchdog timer, programmable clock/buzzer output (PCLBUZ0), and key interrupt support across eight KR pins. Unlike RL78/G1M, it omits real-time output (RTIO) functionality but enables higher drive strength on P00–P05 pins in P-ch open-drain mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space |
| Flash / RAM | 8 KB code flash memory, 1 KB on-chip RAM - sufficient for firmware with integrated communication stack and sensor processing |
| Supply Voltage | VDD = 2.0 to 5.5 V - supports single-cell Li-ion, 3.3 V logic, and 5 V legacy systems |
| Low-Power Modes | STOP mode current: 0.61 µA @ VDD = 3 V - enables multi-year battery life in wake-on-interrupt applications |
| ADC | 8/10-bit resolution, 8 analog inputs - suitable for direct thermistor, potentiometer, and voltage monitoring without external signal conditioning |
| Serial Interfaces | 1 × UART (up to 3.3 Mbps), 1 × CSI (master/slave) - enables RS-485 node control and SPI-compatible sensor interfacing |
| Operating Temperature | −40°C to +85°C - qualified for industrial automation and outdoor metering environments |
Pinout & Package
Package: 20-pin plastic TSSOP (4.4 × 6.5 mm, 0.65 mm pitch), lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P05 | P-ch open-drain output (high-current) | Capable of sourcing up to −120 mA per pin @ VDD = 4.5–5.5 V - drives LED segments, relays, or MOSFET gates directly |
| P06, P07, P10–P16, P40 | N-ch open-drain output / CMOS I/O | Sinks up to 20 mA per pin; supports level-shifting, wired-AND logic, and I²C-like bus topologies |
| P125 | KR1 / RESET | Active-low reset input with internal pull-up; also serves as key return line for matrix keypad scanning |
| P137 | TI00 / INTP0 | Dedicated timer input or external interrupt source - used for pulse counting or edge-triggered event capture |
| ANI0–ANI7 | Analog input | Eight single-ended ADC channels referenced to VDD; no external reference required for ratiometric sensing |
| RxD0 / TxD0 | UART serial I/O | Full-duplex asynchronous communication with programmable baud rate generator - connects to modems, BLE modules, or host MCUs |
| VDD / VSS | Power / Ground | Single-supply operation; decoupling capacitor placement critical for ADC noise immunity and oscillator stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.61 µA typical current draw enables >10-year battery life in periodic-sensing applications using wake-on-INTP or RTC alarm |
| P-ch open-drain I/O on P00–P05 | −120 mA total sourcing capability allows direct driving of 7-segment displays or small solenoids without external drivers |
| Selectable SPOR voltage | Four reset threshold options (2.25 V / 2.68 V / 3.02 V / 4.45 V) permit precise brown-out protection matching system-level power rail sequencing |
| On-chip debug interface | Fully integrated via TOOL0 pin - eliminates need for external debug probe during development and field firmware updates |
| Peripheral I/O redirection | PIOR register enables dynamic remapping of UART, CSI, and timer functions to alternate pins - improves PCB layout flexibility and reuse |
Applications
| Smart Thermostat Control | Industrial Sensor Node |
|---|---|
Use Scenario: Compact wall-mounted HVAC controller measuring ambient temperature/humidity, driving display and relay outputs. IC Role / Device Role / Timing Role: Main system MCU executing PID loop, managing user interface, and communicating via UART to Wi-Fi module. Use Value: Integrated 8-channel ADC eliminates external signal chain; P-ch open-drain pins directly drive 7-segment display segments and relay coils. | Use Scenario: Battery-powered vibration/temperature monitor mounted on rotating machinery in factory settings. IC Role / Device Role / Timing Role: Data acquisition unit sampling analog sensors, performing FFT preprocessing, and transmitting via UART to gateway. Use Value: 0.61 µA STOP mode extends battery life to 7+ years; −40°C to +85°C rating ensures reliability under motor heat exposure. |
| Energy Meter Interface | Home Appliance Keypad |
Use Scenario: Secondary controller in smart electricity meter handling tamper detection, LCD backlight control, and optical port communication. IC Role / Device Role / Timing Role: Peripheral management MCU coordinating optical UART, real-time clock, and secure key scanning. Use Value: KR0–KR7 key return inputs support 8×8 matrix keypad; selectable SPOR prevents false resets during AC line dips. | Use Scenario: Embedded keypad subsystem in washing machine or microwave oven with tactile feedback and LED indicators. IC Role / Device Role / Timing Role: Dedicated input processor scanning mechanical keys, debouncing signals, and driving status LEDs via P00–P05. Use Value: High-current P-ch open-drain outputs eliminate external transistor arrays; built-in BCD correction simplifies numeric display formatting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F11Y67ASM#50 | 4 KB flash, 512 B RAM - half the program storage and RAM capacity | Suitable for simpler firmware with minimal ISR overhead and no floating-point math | Select when firmware size < 3.5 KB and no future feature expansion is planned |
| R5F11W68ASM#50 | RL78/G1M variant: adds 8-channel RTIO but removes P-ch open-drain capability on P00–P05 | Better suited for timing-critical PWM generation (e.g., motor control) than high-current output driving | Choose only if real-time output synchronization is required and high-current sourcing is handled externally |
Compared with R5F11Y67ASM#50, the R5F11Y68ASM#50 provides double flash/RAM for complex protocols and data logging; versus R5F11W68ASM#50, it trades RTIO precision for higher drive strength - making it optimal for display and actuator control where timing jitter is less critical than output capability.
Availability
R5F11Y68ASM#50 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home controllers, and energy meter interfaces requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R5F11Y68ASM#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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G1N product line targets cost-sensitive, ultra-low-power embedded applications demanding high I/O drive strength and robust operation across wide temperature ranges - optimized for appliance control, sensor hubs, and battery-operated instrumentation.
FAQ
What is the maximum clock frequency supported by the R5F11Y68ASM#50?
The R5F11Y68ASM#50 supports a maximum high-speed on-chip oscillator frequency of 20 MHz, with ±2% accuracy over −20°C to +85°C. This enables a minimum instruction execution time of 0.05 µs. External crystal or ceramic resonator configurations are not supported - all timing derives from the integrated oscillator.
Does the R5F11Y68ASM#50 support real-time output (RTIO) functionality?
No, the R5F11Y68ASM#50 does not support real-time output (RTIO). RTIO is exclusive to the RL78/G1M series (e.g., R5F11W68ASM#50). The R5F11Y68ASM#50 belongs to the RL78/G1N family, which replaces RTIO with enhanced P-ch open-drain drive capability on P00–P05 pins for direct actuator control.
What are the key differences between R5F11Y68ASM#50 and R5F11W68ASM#50?
The R5F11Y68ASM#50 (G1N) offers P-ch open-drain outputs on P00–P05 with −120 mA sourcing capability, while the R5F11W68ASM#50 (G1M) provides 8-channel RTIO but lacks high-current sourcing. Both share identical flash (8 KB), RAM (1 KB), and peripheral count - differentiation lies in I/O drive strength versus timing precision.
Can the R5F11Y68ASM#50 operate from a 2.0 V supply?
Yes, the R5F11Y68ASM#50 is rated for VDD = 2.0 to 5.5 V, but operation below 2.25 V is not recommended due to SPOR circuit behavior. At VDD = 2.0–2.24 V, the selectable power-on-reset may not activate reliably; design margins require use within 2.25–5.5 V for guaranteed reset functionality.
Is on-chip debug supported on the R5F11Y68ASM#50, and what pins are required?
Yes, the R5F11Y68ASM#50 includes full on-chip debug functionality accessible via the TOOL0 pin (Pin 1). No additional debug header or SWD/JTAG adapter is needed - standard Renesas E2 emulator or compatible tools connect directly through TOOL0 for programming and real-time debugging during development.
R5F11Y68ASM#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G1N
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- CSI, UART/USART
- Peripherals:
- POR, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 5.5V
- Data Converters:
- A/D 8x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F11Y68ASM#50 FAQ
1.How can I place an order for R5F11Y68ASM#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F11Y68ASM#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 R5F11Y68ASM#50 reliable?
The price and inventory of R5F11Y68ASM#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F11Y68ASM#50 is usually 5 days.
3.What payment methods are accepted for R5F11Y68ASM#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F11Y68ASM#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F11Y68ASM#50?
R5F11Y68ASM#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F11Y68ASM#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 R5F11Y68ASM#50?
For technical support, including R5F11Y68ASM#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F11Y68ASM#50 requirements.
6.How does Aetrix verify that R5F11Y68ASM#50 is sourced from the original manufacturer or authorized distributors?
All R5F11Y68ASM#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 R5F11Y68ASM#50 meets industry standards.
7.What is the process for return or replacement of R5F11Y68ASM#50?
All R5F11Y68ASM#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F11Y68ASM#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 R5F11Y68ASM#50 part is unused and in its original packaging.
Return procedure for R5F11Y68ASM#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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