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Renesas R5F1211CMSP#70
- Part No.:
- R5F1211CMSP#70
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 10-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F1211CMSP#70.pdf
- Description:
- 16-BIT GENERAL MCU RL78/G16 32K
- Quantity:
- Payment:
- Shipping:
Inventory:2,637
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Product details
Overview
R5F1211CMSP#70 from Renesas Electronics is a 10-pin, 32 KB flash RL78/G16 16-bit microcontroller designed for ultra-low-power industrial control and capacitive touch interfaces. It operates from 2.4–5.5 V, features 2 KB RAM, 1 KB data flash, 15-channel CTSU, 8× 16-bit timers, and 10-bit A/D converter with 4 analog inputs - deployed in smart appliance control panels and battery-powered HMI modules.
For engineers reviewing the R5F1211CMSP#70 datasheet, R5F1211CMSP#70 pinout, R5F1211CMSP#70 application, or R5F1211CMSP#70 equivalent, key selection criteria include its −40°C to +125°C industrial temperature rating, LSSOP-10 package with 0.65-mm pitch, integrated RTC with calendar function, and hardware-based capacitive touch sensing unit supporting self- and mutual-capacitance modes.
Technical Context
The R5F1211CMSP#70 implements the RL78 CPU core with 3-stage pipeline CISC architecture, enabling configurable instruction execution time from 0.0625 μs (16 MHz high-speed on-chip oscillator) to 30.5 μs (32.768 kHz subsystem clock). Its memory subsystem includes 32 KB code flash (1 KB block size), 1 KB data flash (512 B blocks, 1M rewrite cycles), and 2 KB SRAM.
Peripheral integration includes one I²C interface, up to three simplified SPI/CSI channels, up to three UART channels, 16-bit timer array (8 channels), real-time clock with alarm and correction, watchdog timer, and a dedicated capacitive touch sensing unit (CTSU) with 15 channels supporting both self- and mutual-capacitance configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic timing for real-time control loops. |
| Operating Voltage | 2.4–5.5 V; supports direct connection to single-cell Li-ion, 3.3 V, or 5 V rails without external regulators. |
| Flash Memory | 32 KB code flash (1 KB erase blocks); sufficient for complex sensor fusion firmware with bootloader space. |
| Data Flash | 1 KB data flash (512 B blocks, 32-bit rewrite units); retains calibration data across power cycles with 1M write endurance. |
| Operating Temperature | −40°C to +125°C (M-grade); qualified for under-hood automotive sensors and industrial motor drives. |
| Capacitive Touch | 15-channel CTSU; supports up to 15 self-capacitance keys or 16 mutual-capacitance keys in matrix configuration. |
| A/D Converter | 10-bit resolution, 4-channel analog input (ANI0–ANI3); includes internal reference (0.815 V) and temperature sensor. |
Pinout & Package
Package: 10-pin plastic LSSOP (4.4 × 3.6 mm, 0.65-mm pitch), exposed pad not present. Suited for compact PCB layouts with manual or automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P125/RESET/INTP1 | Reset input / External interrupt 1 | Active-low reset with internal pull-up; dual-function pin enables hardware reset or wake-up from STOP mode. |
| P40/TOOL0/INTP2 | On-chip debug interface / Interrupt 2 | Enables serial wire debug (SWD) programming and runtime debugging without dedicated JTAG pins. |
| P137/INTP0/TI00 | External interrupt 0 / Timer I/O 0 | Configurable as edge-triggered interrupt source or timer capture/compare channel for pulse-width measurement. |
| VSS | Ground reference | Dedicated analog/digital ground pin; must be connected to low-impedance PCB ground plane for noise immunity. |
| VDD | Power supply | Single 2.4–5.5 V supply powers core, peripherals, and CTSU; no separate analog rail required. |
| P04/ANI3/IVREF0/INTP3 | Analog input 3 / Internal voltage reference / Interrupt 3 | Supports ADC conversion using internal 0.815 V reference or external signal; doubles as wake-up source. |
| P03/ANI2/IVCMP0/INTP4 | Analog input 2 / Comparator input / Interrupt 4 | Enables threshold detection via comparator with selectable internal/external reference; triggers interrupt on crossing. |
| P02/PCLBUZ0/ANI1/VCOUT0/INTP7/TSCAP | Buzzer output / Analog input 1 / CTSU electrode | Direct drive of piezo buzzer; also serves as capacitive touch sense channel with built-in charge-transfer circuitry. |
| P01/TOOLRxD/ANI0/INTP5/TS00 | Debug UART RX / Analog input 0 / Touch sense 0 | Shares debug interface with analog input and CTSU channel - simplifies layout but requires functional multiplexing. |
| P00/TOOLTxD/INTP6/SO00/TxD0 | Debug UART TX / Interrupt 6 / SPI output / UART TX | Multi-function serial pin supports debug communication, SPI master output, or full-duplex UART transmission. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP/HALT modes | Reduces current draw to sub-μA levels while retaining RAM and register state - ideal for battery-backed applications. |
| Hardware CTSU with self/mutual capacitance | Eliminates need for external touch controller IC; supports robust button/slider/knob interfaces with noise rejection. |
| Integrated RTC with 99-year calendar | Provides timestamping, alarm scheduling, and clock correction without external crystal or real-time OS overhead. |
| On-chip high-speed oscillator (±1.0% @ 16 MHz) | Removes external crystal requirement for most timing-critical functions, reducing BOM cost and board area. |
| Background data flash programming disabled | Ensures deterministic real-time behavior - flash writes halt CPU execution, preventing jitter in time-sensitive tasks. |
Applications
| Smart Appliance Control Panel | Industrial Sensor Node |
|---|---|
Use Scenario: Touch-enabled front panel for HVAC, washing machine, or oven with LED feedback and buzzer alerts. IC Role / Device Role / Timing Role: Main system controller executing UI logic, driving capacitive keys, managing buzzer tones, and interfacing with display drivers via SPI. Use Value: Single-chip solution replaces MCU + touch controller + RTC + buzzer driver, reducing component count and layout complexity. |
Use Scenario: Battery-powered temperature/humidity sensor node transmitting data over UART to gateway with local logging. IC Role / Device Role / Timing Role: Data acquisition engine performing periodic ADC reads, RTC-stamped storage to data flash, and low-power wake-up scheduling. Use Value: 125°C rating and STOP-mode current <1 μA enable multi-year operation in unventilated enclosures with minimal energy budget. |
| Automotive Cabin Switch Module | Medical Handheld Device |
Use Scenario: Door lock/unlock or seat position control switch with tactile feedback and ESD-hardened touch interface. IC Role / Device Role / Timing Role: Dedicated switch monitor handling debounce, ESD event recovery, and CAN/LIN message generation via UART-to-transceiver bridge. Use Value: M-grade temperature range and built-in CTSU meet automotive interior ambient requirements without external protection circuitry. |
Use Scenario: Portable blood glucose meter with touch buttons, LCD, and USB/UART connectivity for data export. IC Role / Device Role / Timing Role: System-on-chip managing analog sensor signal chain (ADC + internal ref), touch UI, and host communication protocol stack. Use Value: Integrated 10-bit ADC with temperature sensor and internal 0.815 V reference eliminates external precision references and calibration components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1211AMSP#70 | Same package and pinout; reduced 16 KB code flash and −40°C to +85°C rating (A-grade). | Suitable for consumer-grade appliances where extended temperature range and larger firmware footprint are unnecessary. | Select when cost sensitivity outweighs industrial temperature margin and firmware scalability needs. |
| R5F1214CMSP#70 | 16-pin SSOP variant with identical core, memory, and peripherals; adds 2 extra analog inputs (ANI4–ANI5) and 1 extra CTSU channel. | Required when additional analog sensing or touch keys justify larger footprint and higher pin count. | Choose when design requires >4 analog channels or >15 touch electrodes without external expansion. |
Compared with R5F1211AMSP#70, the R5F1211CMSP#70 provides double the code flash and extended temperature support critical for field-reliable industrial firmware; versus R5F1214CMSP#70, it delivers identical functionality in a smaller 10-pin LSSOP package at lower assembly cost and board area.
Availability
R5F1211CMSP#70 is available at Aetrix Electronics and suitable for smart appliance control panels, industrial sensor nodes, automotive cabin switches, and medical handheld devices requiring stable component supply across long production lifecycles.
Supply support for R5F1211CMSP#70 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 targets ultra-low-power embedded applications demanding integrated capacitive touch, real-time control, and extended temperature operation - optimized for cost-sensitive, space-constrained industrial HMI designs.
FAQ
What is the maximum operating frequency of the R5F1211CMSP#70?
The R5F1211CMSP#70 supports up to 16 MHz operation using its high-speed on-chip oscillator. Frequency accuracy is ±1.0% over VDD = 2.4–5.5 V and TA = −20°C to +85°C. The device also supports lower-frequency modes down to 32.768 kHz for ultra-low-power RTC and STOP-mode operation - all without external crystals.
Does the R5F1211CMSP#70 support background data flash rewriting?
No, the R5F1211CMSP#70 does not support background operation (BGO) for data flash. During data flash rewriting, instruction execution from code flash memory is halted. This ensures deterministic timing but requires careful firmware sequencing to avoid disrupting real-time tasks - a trade-off confirmed in the R01DS0431EJ0130 datasheet.
How many capacitive touch channels does the R5F1211CMSP#70 support?
The R5F1211CMSP#70 integrates a 15-channel Capacitive Touch Sensing Unit (CTSU). It supports self-capacitance mode (15 independent keys) or mutual-capacitance mode (up to 16 keys in matrix configuration using selected transmit/receive pins), with hardware-accelerated charge-transfer measurement and noise cancellation.
What debug interface is available on the R5F1211CMSP#70?
The R5F1211CMSP#70 provides on-chip debug via TOOL0 (P40) and TOOLRxD/TOOLTxD (P01/P00) pins, implementing Renesas' Serial Wire Debug (SWD) protocol. No external debug probe is needed beyond standard SWD headers - enabling in-system programming and real-time variable inspection without JTAG overhead.
Is an external crystal required for RTC operation in the R5F1211CMSP#70?
No, the R5F1211CMSP#70 includes a dedicated low-speed on-chip oscillator for RTC operation, supporting calendar functions, alarms, and clock correction without external 32.768 kHz crystal. The RTC remains active in STOP mode and maintains timekeeping with typical accuracy of ±2.0 ppm over −40°C to +125°C.
R5F1211CMSP#70 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 10-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G16
- Packaging:
- Tray
- 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:
- 32KB (32K 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:
R5F1211CMSP#70 FAQ
1.How can I place an order for R5F1211CMSP#70 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1211CMSP#70 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 R5F1211CMSP#70 reliable?
The price and inventory of R5F1211CMSP#70 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1211CMSP#70 is usually 5 days.
3.What payment methods are accepted for R5F1211CMSP#70?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1211CMSP#70 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1211CMSP#70?
R5F1211CMSP#70 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1211CMSP#70 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 R5F1211CMSP#70?
For technical support, including R5F1211CMSP#70 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1211CMSP#70 requirements.
6.How does Aetrix verify that R5F1211CMSP#70 is sourced from the original manufacturer or authorized distributors?
All R5F1211CMSP#70 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 R5F1211CMSP#70 meets industry standards.
7.What is the process for return or replacement of R5F1211CMSP#70?
All R5F1211CMSP#70 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1211CMSP#70, 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 R5F1211CMSP#70 part is unused and in its original packaging.
Return procedure for R5F1211CMSP#70:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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