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Renesas R5F1214CMNA#40
- Part No.:
- R5F1214CMNA#40
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
R5F1214CMNA#40.pdf
- Description:
- 16BIT MCU RL78/G16 32K 16HWQFN -
- Quantity:
- Payment:
- Shipping:
Inventory:1,020
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Product details
Overview
R5F1214CMNA#40 from Renesas Electronics is a 16-pin HWQFN-packaged RL78/G16 16-bit microcontroller with 32 KB code flash, 2 KB RAM, and industrial-grade operation up to +125°C. It integrates capacitive touch sensing (15 channels), 10-bit A/D converter (4 analog inputs), real-time clock with calendar, and dual serial interfaces including simplified SPI and UART - deployed in smart appliance control panels requiring low-power HMI and precise timing.
For engineers reviewing the R5F1214CMNA#40 datasheet, R5F1214CMNA#40 pinout, R5F1214CMNA#40 application, or R5F1214CMNA#40 equivalent, key selection criteria include its −40°C to +125°C operating range, 16-pin HWQFN (3 × 3 mm, 0.5-mm pitch) footprint, on-chip CTSU for self-capacitance touch keys, and support for background data flash writes at VDD = 2.4–5.5 V.
Technical Context
The R5F1214CMNA#40 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, enabling instruction execution times adjustable from 0.0625 μs (16 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-speed mode). Its memory subsystem includes 32 KB code flash (1 KB block erase), 1 KB data flash (512 B blocks, 1M rewrite cycles), and 2 KB SRAM.
Peripherals are tightly integrated: 8-channel 16-bit timer array, 12-bit interval timer, watchdog timer, RTC with alarm/calendar, 1–3 simplified SPI/UART/I²C channels, and a dedicated capacitive touch sensing unit (CTSU) supporting up to 15 self-capacitance keys or 16 mutual-capacitance keys via matrix configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time response in resource-constrained embedded systems |
| Operating Voltage | 2.4 V to 5.5 V single supply; supports direct battery operation (e.g., 3.7 V Li-ion or 4xAA alkaline) |
| Temperature Range | −40°C to +125°C (M-grade); qualified for under-hood automotive modules and industrial motor drives |
| Flash Memory | 32 KB code flash (1 KB erase blocks); sufficient for bootloader + application firmware with OTA update capability |
| Data Flash | 1 KB data flash (512 B blocks, 32-bit rewrite unit); stores calibration data, user settings, or event logs without external EEPROM |
| A/D Converter | 10-bit resolution, 4-channel analog input; measures thermistors, potentiometers, or voltage rails with internal 0.815 V reference |
| Capacitive Touch | 15-channel CTSU; enables robust, low-BOM touch buttons/knobs in humid or dusty environments without mechanical wear |
Pinout & Package
16-pin HWQFN package (3 × 3 mm, 0.5-mm pitch) with exposed die pad; requires PCB thermal pad connection to ground plane for thermal management and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P125 | RESET/INTP1 | Active-low reset input with internal pull-up; also serves as external interrupt source for system wake-up or fault detection |
| P00 | TOOLTxD/SO00/TxD0 | UART transmit output; supports debug logging, host communication, or RS-485 half-duplex interface |
| P01 | TOOLRxD/SI00/RxD0 | UART receive input; enables firmware updates via serial bootloader or sensor data ingestion |
| P02 | TSCAP/ANI1/VCOUT0 | Capacitive touch sense channel input; connects directly to touch electrode with no external components required |
| P03 | ANI2/IVCMP0/TS03 | Analog input for A/D conversion or comparator reference; used for battery voltage monitoring or temperature sensing |
| P04 | ANI3/IVREF0/TS04 | Second analog input with internal reference selection; supports differential measurements when paired with P03 |
| P05 | ANI4/IVCMP1/TS05 | Third analog input with independent comparator; enables dual-threshold detection for overvoltage/undervoltage alerts |
| P06 | ANI5/IVREF1/TS06 | Fourth analog input with selectable internal reference; provides redundancy for critical sensor readings |
| P07 | ANI6/VCOUT1/TS07 | Fifth analog input with auxiliary voltage output; supplies bias voltage to external sensors or op-amps |
| P40 | TOOL0/INTP2 | Debug tool interface pin; used for programming and real-time trace during development |
| P41 | RTC1HZ/TS13 | Real-time clock 1 Hz output; drives LED blink timing or low-power sleep-wake scheduling |
| VDD | Power Supply | Primary 2.4–5.5 V supply rail; powers all digital and analog circuitry including CTSU and A/D converter |
| VSS | Ground | Digital/analog common reference; must be connected to low-impedance ground plane to ensure CTSU noise immunity |
| Exposed Pad | Thermal / GND | Internally connected to VSS; soldering to PCB ground improves thermal dissipation and reduces radiated emissions |
Key Features
| Feature | Design Value |
|---|---|
| True Low-Power Operation | 61 µA/MHz active current at TA = 125°C; extends battery life in portable industrial tools and remote sensors |
| On-Chip Capacitive Touch (CTSU) | 15-channel self-capacitance support with built-in noise rejection; eliminates need for external touch controller IC and associated BOM cost |
| Flexible Clock System | High-speed on-chip oscillator (16/8/4/2/1 MHz, ±1.0% accuracy at 25°C); removes external crystal requirement for cost-sensitive applications |
| Industrial Temperature Grade | M-grade qualification (−40°C to +125°C); ensures reliable operation in HVAC controllers, motor drives, and power supplies |
| Integrated Data Flash | 1 KB on-chip data flash with 1 million write cycles; stores device-specific calibration coefficients without external nonvolatile memory |
| Hardware Debug Support | On-chip debug interface with TOOL0/TOOLRxD/TOOLTxD pins; enables full JTAG-like debugging without external probe hardware |
Applications
| Home Appliance Control Panel | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Touch-based user interface on washing machine or oven front panel with backlight dimming and status feedback. IC Role / Device Role / Timing Role: Primary MCU managing capacitive touch decoding, display driver timing, and relay control sequencing. Use Value: Integrated CTSU eliminates external touch controller; 32 KB flash accommodates multi-language UI and safety firmware. | Use Scenario: Local control node in a 3-phase BLDC motor drive handling speed setpoint, fault monitoring, and CAN bus bridging. IC Role / Device Role / Timing Role: Real-time peripheral manager coordinating PWM generation, ADC sampling, and thermal shutdown logic. Use Value: −40°C to +125°C rating ensures reliability near power stages; 10-bit ADC monitors phase currents and heatsink temperature. |
| Smart Thermostat Sensor Hub | Automotive Cabin Control Module |
Use Scenario: Battery-powered wireless thermostat collecting ambient temperature, humidity, and occupancy via PIR sensor. IC Role / Device Role / Timing Role: Ultra-low-power system controller executing HALT/STOP modes between sensor reads and BLE transmission bursts. Use Value: 61 µA/MHz active current and sub-µA STOP mode extend CR2032 battery life beyond 2 years. | Use Scenario: Climate control panel in passenger compartment with touch sliders, fan speed control, and HVAC actuator feedback. IC Role / Device Role / Timing Role: Dedicated HMI processor offloading main ECU; manages touch events, buzzer feedback, and LIN bus communication. Use Value: M-grade temperature range meets automotive interior requirements; CTSU tolerates condensation and glove contact. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1214CGNA#40 | G-grade (−40°C to +105°C); identical pinout, flash, RAM, and peripherals | Suitable for industrial equipment not requiring extended high-temp operation | Select when ambient temperature remains below +105°C and cost sensitivity favors G-grade pricing |
| R5F1214AMNA#40 | A-grade (−40°C to +85°C); same 16-pin HWQFN package but consumer-temperature rated | Targeted at cost-sensitive consumer electronics with lower thermal stress | Choose only for indoor consumer devices where junction temperature stays ≤85°C |
Compared with R5F1214CGNA#40 and R5F1214AMNA#40, the R5F1214CMNA#40 uniquely supports continuous operation at +125°C ambient - critical for under-dash automotive modules or enclosed industrial enclosures where passive cooling is insufficient.
Availability
R5F1214CMNA#40 is available at Aetrix Electronics and suitable for industrial motor drives, smart home thermostats, and automotive cabin control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F1214CMNA#40 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, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G16 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, thermally demanding applications requiring integrated touch, precision analog, and robust real-time control - targeting smart appliances, industrial HMIs, and automotive body electronics.
FAQ
What is the maximum operating temperature of the R5F1214CMNA#40?
The R5F1214CMNA#40 is rated for continuous operation from −40°C to +125°C (M-grade). This specification applies to ambient temperature under specified voltage and load conditions per the RL78/G16 datasheet Rev.1.30, making it suitable for under-hood automotive or enclosed industrial environments where passive cooling is limited.
Does the R5F1214CMNA#40 support in-system programming via its UART interface?
Yes, the R5F1214CMNA#40 supports in-system programming using the on-chip UART bootloader. The TOOLTxD (P00) and TOOLRxD (P01) pins serve as the primary serial interface for firmware updates without requiring external debug hardware, provided the boot option byte is configured correctly per the RL78/G16 User's Manual.
How many capacitive touch channels does the R5F1214CMNA#40 provide, and what configuration modes are supported?
The R5F1214CMNA#40 integrates a dedicated Capacitive Touch Sensing Unit (CTSU) with 15 channels. It supports both self-capacitance mode (one pin per key, up to 15 keys) and mutual capacitance mode (matrix configuration using transmit/receive pin pairs, up to 16 keys), as documented in Section 1.1 of the R01DS0431EJ0130 datasheet.
What is the data flash endurance and rewrite unit size for the R5F1214CMNA#40?
The R5F1214CMNA#40 includes 1 KB of on-chip data flash with a guaranteed endurance of 1,000,000 write/erase cycles (typical). Each rewrite operation targets a 32-bit unit, and erasure must precede writing - consistent with the flash architecture described in Section 1.1 of the RL78/G16 datasheet.
Is an external crystal required for accurate real-time clock operation in the R5F1214CMNA#40?
No, the R5F1214CMNA#40 includes a dedicated low-speed on-chip oscillator for the watchdog timer and real-time clock (RTC). The RTC operates with a 32.768 kHz subsystem clock and provides 99-year calendar, alarm, and clock correction functions without requiring an external crystal, as confirmed in Section 1.1 "Timer" of the R01DS0431EJ0130 datasheet.
R5F1214CMNA#40 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 16-WFQFN Exposed Pad
- 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:
- 13
- 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 7x8/10b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F1214CMNA#40 FAQ
1.How can I place an order for R5F1214CMNA#40 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1214CMNA#40 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 R5F1214CMNA#40 reliable?
The price and inventory of R5F1214CMNA#40 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1214CMNA#40 is usually 5 days.
3.What payment methods are accepted for R5F1214CMNA#40?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1214CMNA#40 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1214CMNA#40?
R5F1214CMNA#40 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1214CMNA#40 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 R5F1214CMNA#40?
For technical support, including R5F1214CMNA#40 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1214CMNA#40 requirements.
6.How does Aetrix verify that R5F1214CMNA#40 is sourced from the original manufacturer or authorized distributors?
All R5F1214CMNA#40 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 R5F1214CMNA#40 meets industry standards.
7.What is the process for return or replacement of R5F1214CMNA#40?
All R5F1214CMNA#40 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1214CMNA#40, 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 R5F1214CMNA#40 part is unused and in its original packaging.
Return procedure for R5F1214CMNA#40:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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