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Renesas R5F11W67ASM#50
- Part No.:
- R5F11W67ASM#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F11W67ASM#50.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
R5F11W67ASM#50 from Renesas is an ultra-low-power 16-bit RL78/G1M microcontroller in 20-pin TSSOP package, featuring 4 KB flash memory, 512 B RAM, 8-channel 8/10-bit ADC, 4-channel 16-bit timer, UART/CSI serial interfaces, and real-time output capability - deployed in battery-powered consumer sensor nodes and smart home control modules.
For engineers reviewing the R5F11W67ASM#50 datasheet, R5F11W67ASM#50 pinout, R5F11W67ASM#50 application, or R5F11W67ASM#50 equivalent, this page delivers verified electrical specs, validated I/O mapping, confirmed low-power operating modes (HALT/STOP), and precise alternative part guidance for design-in and supply continuity planning.
Technical Context
The R5F11W67ASM#50 implements the RL78-S1 CPU core with 3-stage pipeline, supporting instruction execution times from 0.05 µs (@20 MHz) to 0.8 µs (@1 MHz). It integrates a selectable power-on-reset (SPOR) circuit with four detection thresholds (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 a 4-channel TAU timer unit with PWM outputs, 8-channel analog input multiplexer, programmable clock/buzzer output (PCLBUZ0), key interrupt support (KR0–KR7), and real-time output (RTIO0–RTIO7) - all accessible via 18 configurable I/O pins in N-ch open-drain (14 pins) and P-ch open-drain (6 pins) configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78-S1 16-bit CISC with 3-stage pipeline; enables deterministic timing-critical control loops. |
| Flash / RAM | 4 KB code flash + 512 B on-chip RAM; sufficient for firmware with sensor fusion and UART-based telemetry. |
| Operating Voltage | 2.25–5.5 V supply range; aligns with coin-cell (3 V) and USB-powered (5 V) systems without external regulators. |
| Power Modes | HALT mode (390–980 µA @3–5 V), STOP mode (0.61–2.35 µA); extends battery life in intermittent-sensing applications. |
| ADC Resolution | 8/10-bit SAR A/D converter with 8 analog inputs; supports precision thermistor, potentiometer, and ambient light sensing. |
| Serial Interfaces | 1× UART (up to 3.3 Mbps), 1× CSI (SPI-compatible master/slave); enables direct connection to BLE modules and EEPROMs. |
| Timer Resources | 4× 16-bit TAU channels + 1× 12-bit interval timer + watchdog; provides PWM motor control, pulse counting, and system supervision. |
Pinout & Package
Package: 20-pin plastic TSSOP (4.4 × 6.5 mm, 0.65 mm pitch), RoHS-compliant, embossed tape packaging (#50).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P05 | CMOS I/O (N-ch open-drain) | 14 total N-ch open-drain pins with VDD-tolerant operation; suitable for driving LEDs or interfacing with 5 V logic. |
| P06, P07, P10–P16, P40 | CMOS I/O (N-ch open-drain) | Additional 4 N-ch open-drain pins; P06/P10 do not output high level in N-ch mode per datasheet caution. |
| P125 | RESET / KR1 | Active-low reset input with internal pull-up; also serves as key return line for matrix keypad scanning. |
| P137 | INTP0 / TI00 | External interrupt input and timer input; supports edge-triggered wake-up from STOP mode. |
| VDD / VSS | Power / Ground | Dual power pins enable low-noise analog/digital separation; decoupling required per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power HALT/STOP modes | Reduces active current to sub-1 mA and standby current to <2.4 µA - critical for multi-year battery life in IoT endpoints. |
| Real-time output (RTIO0–RTIO7) | 8 dedicated hardware outputs synchronized to timer events; eliminates software overhead in time-stamped actuation. |
| On-chip debug interface | Enables in-circuit programming and real-time trace without external JTAG adapter - accelerates firmware validation. |
| Selectable SPOR voltage thresholds | Four rising-edge detection levels (2.25/2.68/3.02/4.45 V) allow precise brown-out response matching system rail behavior. |
| Peripheral I/O redirection (PIOR) | Allows dynamic remapping of UART, CSI, and timer signals to alternate pins - improves PCB routing flexibility. |
Applications
| Smart Thermostat Sensor Node | Wireless Door Lock Controller |
|---|---|
|
Use Scenario: Battery-powered wall-mounted thermostat collecting temperature/humidity data and transmitting via UART-to-BLE bridge. IC Role / Device Role / Timing Role: Main system controller executing sensor polling, ADC conversion, and UART packet framing at 100 ms intervals. Use Value: 4 KB flash accommodates sensor calibration tables and BLE protocol stack; STOP mode draws ≤2.35 µA to extend CR2032 life beyond 3 years. |
Use Scenario: Low-voltage electronic deadbolt with keypad entry, tamper detection, and Bluetooth provisioning. IC Role / Device Role / Timing Role: Keypad scanner (KR0–KR7), motor driver PWM generator (TAU TO0x), and secure UART bootloader host. Use Value: N-ch open-drain I/O drives 12 V solenoid via external FET; real-time output (RTIO) ensures precise 500 ms lock/unlock timing independent of firmware load. |
| Portable Medical Glucometer | LED Dimming Remote Control |
|
Use Scenario: Handheld blood glucose meter using electrochemical strip interface and LCD display. IC Role / Device Role / Timing Role: Analog front-end controller acquiring strip current via 10-bit ADC, managing LCD contrast via PCLBUZ0, and handling button interrupts. Use Value: 8-channel ADC supports multi-electrode strip analysis; on-chip BCD correction simplifies numeric display formatting without CPU overhead. |
Use Scenario: IR remote with RGB LED feedback, rotary encoder input, and RF transmission. IC Role / Device Role / Timing Role: Encoder position decoder (INTP0–INTP5), RGB LED PWM modulator (TAU TO0x), and UART-based RF module command interface. Use Value: Programmable clock output (PCLBUZ0) generates precise 38 kHz IR carrier; 18 I/O pins support encoder, buttons, and 3-channel LED drive without external logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F11W68ASM#50 | 8 KB flash, 1 KB RAM - double memory capacity; identical pinout and peripheral set. | Suitable for firmware requiring larger OTA update partitions or complex state machines. | Select when future feature expansion or field-upgrade capability is required; no PCB change needed. |
| R5F11Y67ASM#50 | RL78/G1N variant: adds high-current P-ch open-drain outputs (120 mA per pin on P00–P05) but removes RTIO functionality. | Better suited for direct-driving small relays or segment displays; lacks real-time output for time-critical actuation. | Choose for higher-drive digital loads where RTIO is unused; verify pin compatibility for KR/INTP mappings. |
Compared with R5F11W67ASM#50, R5F11W68ASM#50 offers scalable memory headroom within identical power/performance envelopes, while R5F11Y67ASM#50 trades real-time output capability for enhanced drive strength - enabling optimized selection based on firmware size or output load requirements.
Availability
R5F11W67ASM#50 is available at Aetrix Electronics and suitable for smart home controllers, portable medical devices, industrial sensor transmitters, and battery-powered remote controls requiring stable component supply across long production lifecycles.
Supply support for R5F11W67ASM#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 specializing in microcontrollers, analog, and power management ICs for automotive, industrial, and IoT markets.
The RL78/G1M product line targets cost-sensitive, ultra-low-power embedded applications in consumer electronics and industrial controls - emphasizing energy efficiency, integrated peripherals, and rapid development with on-chip debug.
FAQ
What is the maximum operating frequency and instruction cycle time for R5F11W67ASM#50?
The R5F11W67ASM#50 supports a maximum high-speed on-chip oscillator frequency of 20 MHz, yielding a minimum instruction execution time of 0.05 µs under 2.7–5.5 V supply conditions. At lower voltages (2.0–2.7 V), the minimum cycle time increases to 0.2 µs. The RL78-S1 core maintains deterministic timing across all supported clock configurations, making R5F11W67ASM#50 suitable for hard real-time tasks.
Does R5F11W67ASM#50 support hardware debugging during production deployment?
No - the on-chip debug function in R5F11W67ASM#50 is intended solely for development and evaluation. Renesas explicitly cautions against using it in mass-produced units due to flash memory rewrite endurance limits. Production firmware must be programmed via dedicated programming tools, and debug features should be disabled in final builds to ensure R5F11W67ASM#50 reliability and longevity.
How many analog input channels does R5F11W67ASM#50 provide, and what resolution options are available?
The R5F11W67ASM#50 integrates an 8/10-bit successive approximation register (SAR) A/D converter with eight analog input channels (ANI0–ANI7). Resolution is selectable per conversion, supporting both 8-bit (fast acquisition) and 10-bit (higher precision) modes. Input voltage range is 0 to VDD (2.4–5.5 V), and conversions can be triggered by software, timer, or external event - all fully supported in R5F11W67ASM#50's hardware design.
What are the key differences between R5F11W67ASM#50 and R5F11W68ASM#50?
R5F11W67ASM#50 and R5F11W68ASM#50 share identical package, pinout, peripherals, and power characteristics - differing only in memory capacity: R5F11W67ASM#50 has 4 KB flash and 512 B RAM, while R5F11W68ASM#50 provides 8 KB flash and 1 KB RAM. This makes R5F11W68ASM#50 a drop-in upgrade path for designs needing larger firmware space or additional data buffers without modifying R5F11W67ASM#50's hardware layout.
Can R5F11W67ASM#50 operate reliably at 2.0 V supply voltage?
R5F11W67ASM#50 is rated for 2.0–5.5 V operation, but Renesas specifies that the selectable power-on-reset (SPOR) circuit requires a minimum VDD of 2.25 V for proper detection. Therefore, while the core may function down to 2.0 V, system-level reliability mandates operation ≥2.25 V to guarantee robust reset behavior - a constraint directly tied to R5F11W67ASM#50's internal SPOR architecture and documented in its absolute maximum ratings.
R5F11W67ASM#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G1M
- 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:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 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:
R5F11W67ASM#50 FAQ
1.How can I place an order for R5F11W67ASM#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F11W67ASM#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 R5F11W67ASM#50 reliable?
The price and inventory of R5F11W67ASM#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F11W67ASM#50 is usually 5 days.
3.What payment methods are accepted for R5F11W67ASM#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F11W67ASM#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F11W67ASM#50?
R5F11W67ASM#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F11W67ASM#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 R5F11W67ASM#50?
For technical support, including R5F11W67ASM#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F11W67ASM#50 requirements.
6.How does Aetrix verify that R5F11W67ASM#50 is sourced from the original manufacturer or authorized distributors?
All R5F11W67ASM#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 R5F11W67ASM#50 meets industry standards.
7.What is the process for return or replacement of R5F11W67ASM#50?
All R5F11W67ASM#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F11W67ASM#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 R5F11W67ASM#50 part is unused and in its original packaging.
Return procedure for R5F11W67ASM#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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