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Renesas R5F1211AMSP#50
- Part No.:
- R5F1211AMSP#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 10-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F1211AMSP#50.pdf
- Description:
- 16BIT MCU RL78/G16 16K 10LSSOP -
- Quantity:
- Payment:
- Shipping:
Inventory:2,283
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Product details
Overview
R5F1211AMSP#50 from Renesas Electronics is a 10-pin, 16 KB flash RL78/G16 8-bit microcontroller with industrial-grade temperature range (−40°C to +125°C), 2 KB RAM, 1 KB data flash, and integrated capacitive touch sensing unit (15-channel CTSU). It features a low-power RL78 CPU core (0.0625 μs min instruction time @16 MHz), 8×16-bit timers, 10-bit A/D converter (4-channel), and serial interfaces including UART, simplified SPI (CSI), and simplified I²C - deployed in battery-powered industrial control panels requiring reliable HMI and real-time sensor interfacing.
For engineers reviewing the R5F1211AMSP#50 datasheet, R5F1211AMSP#50 pinout, R5F1211AMSP#50 application, or R5F1211AMSP#50 equivalent, key selection criteria include its 10-pin LSSOP package, M-grade thermal rating, 16 KB code flash with self-programming, on-chip RTC with calendar function, and dedicated touch-sensing I/O pins supporting self-capacitance up to 15 keys without external components.
Technical Context
The R5F1211AMSP#50 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling configurable instruction timing from 0.0625 μs (16 MHz high-speed oscillator) to 30.5 μs (32.768 kHz subsystem clock). Its memory subsystem includes 16 KB code flash (1 KB erase blocks), 1 KB data flash (512 B blocks, 1M rewrite cycles), and 2 KB SRAM - all operating across VDD = 2.4–5.5 V.
Peripheral integration centers on low-power operation: HALT/STOP modes, on-chip SPOR reset, 10-bit A/D with internal reference (0.815 V) and temperature sensor, dual comparator channels, and a dedicated 15-channel capacitive touch sensing unit (CTSU) supporting both self- and mutual-capacitance configurations - all accessible via its 10-pin LSSOP footprint with multiplexed I/O.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RL78 8-bit CISC with 3-stage pipeline; supports 0.0625 μs min instruction time at 16 MHz |
| Flash Memory | 16 KB code flash (1 KB erase blocks); enables field firmware updates without boot swap |
| Data Flash | 1 KB data flash (512 B blocks); rated for 1,000,000 rewrites at full VDD range (2.4–5.5 V) |
| RAM | 2 KB on-chip SRAM; sufficient for real-time control stacks and touch-sensing buffer storage |
| A/D Converter | 10-bit resolution, 4 analog input channels, internal 0.815 V reference and temperature sensor |
| Operating Temp | −40°C to +125°C (M-grade); qualified for under-hood automotive sensors and industrial motor drives |
| Package | 10-pin LSSOP (4.4 × 3.6 mm, 0.65-mm pitch); surface-mount compatible with standard reflow profiles |
Pinout & Package
10-pin plastic LSSOP (4.4 × 3.6 mm, 0.65-mm pitch), industrial M-grade variant with exposed pad not present (LSSOP, not QFN).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P125/RESET/INTP1 | Reset & interrupt input | Active-low hardware reset with interrupt capability; dual-function pin simplifies board-level reset circuitry |
| P40/TOOL0/INTP2 | Debug interface & interrupt | Enables on-chip debugging via TOOL0 signal; eliminates need for external JTAG adapter in development |
| P137/INTP0/TI00 | Interrupt & timer output | Configurable as external interrupt source or 16-bit timer channel 0 output for PWM generation |
| VSS | Ground reference | Dedicated power ground pin; decoupling capacitor must be placed within 5 mm for stable low-noise operation |
| VDD | Power supply | Single 2.4–5.5 V supply; powers entire core, peripherals, and CTSU - no auxiliary voltage rails required |
| P04/ANI3/IVREF0/INTP3 | Analog input & reference | Third analog channel with selectable internal reference (0.815 V); used for precision sensor biasing or calibration |
| P03/ANI2/IVCMP0/INTP4 | Analog input & comparator | Second analog input with comparator reference option; enables threshold-based wake-up from STOP mode |
| P02/PCLBUZ0/ANI1/VCOUT0 | Analog input & buzzer drive | Primary touch-sensing pin (TSCAP) with integrated buzzer driver; supports direct piezo actuation without external transistor |
| P01/TOOLRxD/ANI0/INTP5 | Debug RX & analog input | UART receive pin repurposed for debug; also serves as first A/D channel and touch-sensing input (TS00) |
| P00/TOOLTxD/INTP6/SO00 | Debug TX & serial output | UART transmit pin used for debug logging; doubles as SPI master output (SO00) for peripheral daisy-chaining |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Touch Sensing Unit (CTSU) | 15-channel self-capacitance support with built-in charge-transfer circuitry - eliminates external RC networks for touch buttons |
| Real-Time Clock (RTC2) | 99-year calendar with alarm and clock correction; operates independently during STOP mode using 32.768 kHz crystal |
| Low-Power Operating Modes | HALT mode (core stopped, peripherals active) and STOP mode (all clocks halted except RTC) - reduces current to <1 μA |
| On-Chip High-Speed Oscillator | Factory-trimmed 16 MHz oscillator with ±1.5% accuracy over −40°C to +125°C - removes need for external crystal in cost-sensitive designs |
| Self-Programming Flash | Code flash reprogramming in-application without boot loader; supports secure flash shield window for IP protection |
| Integrated Peripheral Redirection | Peripheral I/O Redirection Registers (PIOR) allow dynamic remapping of UART, CSI, and I²C functions to alternate pins - increases PCB layout flexibility |
Applications
| Industrial Control Panel | Smart Appliance HMI |
|---|---|
|
Use Scenario: Front-panel interface for HVAC controllers with tactile buttons, LED indicators, and temperature sensor feedback. IC Role / Device Role / Timing Role: Primary MCU managing capacitive touch inputs, driving buzzer alerts, reading analog thermistor, and communicating via UART to main controller. Use Value: Integrated CTSU and 10-bit A/D eliminate external touch ICs and ADCs; 16 KB flash accommodates localized UI logic and calibration tables. |
Use Scenario: User interface module in washing machines, handling start/pause, cycle selection, and door-lock status. IC Role / Device Role / Timing Role: Dedicated HMI controller with RTC-driven timer functions, buzzer feedback, and fault detection via analog comparator. Use Value: M-grade temperature rating ensures reliability near motor heat sources; STOP mode extends battery life in cordless handheld remotes. |
| Automotive Cabin Sensor | Energy Monitoring Module |
|
Use Scenario: Occupancy and ambient light sensing in vehicle door modules or seat controls. IC Role / Device Role / Timing Role: Low-power sensor hub acquiring touch, light, and temperature data; wakes on interrupt to report via LIN or UART. Use Value: −40°C to +125°C operation meets automotive AEC-Q100 Grade 2 requirements; on-chip RTC enables timestamped event logging. |
Use Scenario: Standalone power meter in industrial equipment, measuring voltage/current via shunt and reporting via RS-485. IC Role / Device Role / Timing Role: Data acquisition node performing 10-bit A/D sampling, calculating RMS values, and storing min/max in data flash. Use Value: 1 KB data flash with 1M rewrite cycles stores 10+ years of energy logs; simplified SPI interfaces to isolated ADCs reduce BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1211AGSP#50 | G-grade (−40°C to +105°C); identical pinout, memory, and peripherals | Suitable for industrial automation where extended temperature is not required | Select for cost-sensitive factory-floor HMIs with ambient cooling |
| R5F1214AMSP#50 | 16-pin SSOP package; adds 2 extra analog inputs (ANI5/ANI6), 1 extra timer channel, and SCL11/SDA11 I²C | Required when design needs >4 analog channels or dual I²C buses | Choose when scaling from 10-pin to 16-pin layout for enhanced sensor fusion |
Compared with R5F1211AGSP#50, the R5F1211AMSP#50 provides higher thermal margin for sealed enclosures; compared with R5F1214AMSP#50, it offers lower component count and smaller PCB area at the cost of two analog inputs and one I²C interface.
Availability
R5F1211AMSP#50 is available at Aetrix Electronics and suitable for industrial control panels, smart appliance HMIs, automotive cabin sensors, and energy monitoring modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F1211AMSP#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/G16 product line delivers ultra-low-power 8-bit MCUs optimized for cost-sensitive, battery-operated human-machine interfaces and sensor nodes - combining capacitive touch, RTC, and robust flash in compact packages.
FAQ
What is the maximum operating frequency and corresponding instruction timing for the R5F1211AMSP#50?
The R5F1211AMSP#50 supports a maximum operating frequency of 16 MHz using its on-chip high-speed oscillator. At this speed, the minimum instruction execution time is 0.0625 μs. This timing is achievable across the full industrial temperature range (−40°C to +125°C) with ±1.5% frequency accuracy, making the R5F1211AMSP#50 suitable for deterministic real-time control loops without external clock components.
Does the R5F1211AMSP#50 support in-system programming (ISP) and secure firmware updates?
Yes, the R5F1211AMSP#50 supports in-system programming via its on-chip debug interface (TOOL0/TOOLRxD/TOOLTxD pins) and includes flash shield window functionality to prevent unauthorized read-out of code flash contents. Self-programming allows firmware updates without boot swap, and the 1 KB data flash supports background write operations - though background operation is not supported during data flash rewriting, requiring careful state management in the R5F1211AMSP#50 application firmware.
How many capacitive touch channels does the R5F1211AMSP#50 support, and what configuration options are available?
The R5F1211AMSP#50 integrates a dedicated Capacitive Touch Sensing Unit (CTSU) supporting up to 15 self-capacitance channels - each mapped to a single GPIO pin such as P02/TSCAP. It also supports mutual capacitance matrix configurations using up to 15 pins for transmit/receive pairing, enabling up to 16 keys. All CTSU functions are implemented in hardware with no CPU overhead, and the R5F1211AMSP#50 datasheet confirms full CTSU operation across its −40°C to +125°C rating.
What are the power supply requirements and low-power modes supported by the R5F1211AMSP#50?
The R5F1211AMSP#50 operates from a single 2.4 V to 5.5 V supply (VDD) with no auxiliary rails required. It supports HALT mode (CPU halted, peripherals active) and STOP mode (all clocks halted except RTC) - achieving sub-1 μA current consumption in STOP mode with RTC running. These modes are controlled via software registers and are fully specified across the M-grade temperature range, ensuring predictable battery life in portable R5F1211AMSP#50 deployments.
Can the R5F1211AMSP#50 interface with external I²C devices, and which pins are assigned to I²C functions?
Yes, the R5F1211AMSP#50 supports simplified I²C (referred to as "Simplified I2C" in documentation) on pins P03/SCLA0 and P04/SDAA0, and full I²C (IICA) on P03/SCLA0 and P04/SDAA0 - sharing the same physical pins. The peripheral I/O redirection register (PIOR) allows remapping of these functions if needed. Both modes operate at standard (100 kHz) and fast (400 kHz) speeds, and the R5F1211AMSP#50's internal pull-up capability eliminates external resistors in many configurations.
R5F1211AMSP#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 10-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G16
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- CSI, I2C, SPI, UART/USART
- Peripherals:
- Capacitive Touch, POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 7
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 5.5V
- Data Converters:
- A/D 4x8/10b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F1211AMSP#50 FAQ
1.How can I place an order for R5F1211AMSP#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1211AMSP#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 R5F1211AMSP#50 reliable?
The price and inventory of R5F1211AMSP#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1211AMSP#50 is usually 5 days.
3.What payment methods are accepted for R5F1211AMSP#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1211AMSP#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1211AMSP#50?
R5F1211AMSP#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1211AMSP#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 R5F1211AMSP#50?
For technical support, including R5F1211AMSP#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1211AMSP#50 requirements.
6.How does Aetrix verify that R5F1211AMSP#50 is sourced from the original manufacturer or authorized distributors?
All R5F1211AMSP#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 R5F1211AMSP#50 meets industry standards.
7.What is the process for return or replacement of R5F1211AMSP#50?
All R5F1211AMSP#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1211AMSP#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 R5F1211AMSP#50 part is unused and in its original packaging.
Return procedure for R5F1211AMSP#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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