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Renesas R5F1214CGNA#20
- Part No.:
- R5F1214CGNA#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
R5F1214CGNA#20.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 16WFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,960
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Product details
Overview
R5F1214CGNA#20 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 −40°C to +105°C operation. It integrates an 8/10-bit ADC (11-channel), capacitive touch sensing unit (15-channel), real-time clock with calendar, and dual serial interfaces including I²C and simplified SPI/UART - deployed in smart appliance control panels requiring low-power HMI and sensor fusion.
For engineers reviewing the R5F1214CGNA#20 datasheet, R5F1214CGNA#20 pinout, R5F1214CGNA#20 application, or R5F1214CGNA#20 equivalent, key selection criteria include its 16-pin HWQFN (3 × 3 mm, 0.5-mm pitch) footprint, G-grade temperature rating, C-ROM variant (32 KB), and integrated CTSU for touch-button interfaces without external controllers.
Technical Context
The R5F1214CGNA#20 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, supporting instruction execution times 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 on-chip RAM.
Peripheral integration centers on mixed-signal support: 11-channel 8/10-bit ADC with internal reference (0.815 V), dual comparators, 16-bit timer array (8 channels), RTC with 99-year calendar and alarm, and a dedicated 15-channel capacitive touch sensing unit (CTSU) supporting self- and mutual-capacitance configurations - all operating within a single 2.4–5.5 V supply rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time control at ultra-low power |
| Flash Memory | 32 KB code flash (1 KB erase blocks); supports in-application programming without boot swap |
| Data Flash | 1 KB data flash (512 B blocks, 32-bit rewrite units); rated for 1,000,000 rewrites at full VDD range |
| ADC | 8/10-bit resolution, 11 analog inputs, internal 0.815 V reference; eliminates need for external voltage references |
| CTSU | 15-channel capacitive touch sensing unit; enables up to 16 keys via matrix configuration without external ICs |
| Operating Temp | −40°C to +105°C (G-grade); qualified for industrial motor drives and HVAC control environments |
| Supply Voltage | 2.4 V to 5.5 V single supply; simplifies power design versus dual-rail MCUs |
Pinout & Package
Package: 16-pin HWQFN (3 × 3 mm, 0.5-mm pitch) with exposed die pad - requires PCB thermal pad connection to ground plane for thermal management and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P125 | RESET/INTP1/VCOUT0/VCOUT1/INTP0 | Active-low reset input with internal pull-up; dual VCOUT outputs support external crystal buffer or clock distribution |
| P137 | INTP0/TI00 | Dedicated external interrupt input and Timer Array Channel 0 input capture; enables precise edge-triggered wake-up |
| P122 | X2/XT2/EXCLK/EXCLKS/TI05/TO05/INTP2 | Crystal oscillator input (X2) and external clock input (EXCLK); supports high-accuracy timing or bypass mode |
| P121 | X1/XT1/TI07/TO07/INTP3/INTP4/INTP5 | Crystal oscillator output (X1) and multi-function timer I/O; enables 32.768 kHz RTC crystal drive |
| VSS | Ground | Analog/digital common ground reference; must be connected to low-impedance PCB plane |
| VDD | Power Supply | Single 2.4–5.5 V supply for entire MCU; powers analog and digital domains simultaneously |
| P00 | TOOLTxD/INTP6/SO00/TxD0/RTC1HZ/SCK11/SCL11/SCLA0 | UART transmit, SPI master output, and I²C clock line - shared functions reduce pin count for compact designs |
| P01 | TOOLRxD/ANI0/INTP5/TS00/TI02/TO02/SI00/RxD0/SDA00/SDAA0 | Analog input 0, touch sense channel 0, UART receive, and I²C data line - enables sensor + comms on one pin |
| P02 | PCLBUZ0/ANI1/VCOUT0/INTP7/TSCAP/TI01/TO01/SCK00/SCL00/SO11 | Capacitive touch input (TSCAP), analog input 1, and SPI clock - primary CTSU interface pin |
| P03 | ANI2/IVCMP0/INTP4/TS03/TO00/RxD1/TI00/SO00/TxD0 | Comparator input 0, touch channel 3, UART receive, and timer output - supports analog monitoring + comms |
| P04 | ANI3/IVREF0/INTP3/TS04/TI06/TO06/TxD1/TI01/TO01/SI00/RxD0/SDA00/SO00/TxD0 | Internal voltage reference input (IVREF0), touch channel 4, and dual UART transmit paths - enhances ADC accuracy |
| P05 | ANI4/IVCMP1/INTP6/TS05/SO11/TI02/TO02/TI07/TO07/SCK00/SCL00/SI00/RxD0/SDA00 | Comparator input 1 and touch channel 5; enables differential sensor measurement with on-chip comparator |
| P06 | ANI5/IVREF1/TS06/SI11/SDA11/SCLA0/PCLBUZ0/INTP7/TI03/TO03/SCK00/SCL00 | Second internal reference input (IVREF1) and I²C slave address line - supports dual-reference ADC calibration |
| P07 | ANI6/VCOUT1/TS07/TI04/TO04/SCK11/SCL11/SDAA0/INTP5/TO03 | VCOUT1 output and touch channel 7; provides second buffered clock output for synchronous peripheral interfacing |
| P40 | TOOL0/INTP2/PCLBUZ0/TI01/TO01 | On-chip debug interface pin and buzzer driver output; enables production programming and audible feedback |
| P41 | RTC1HZ/TS13/TI03/TO03/SCK20/SCL20/VCOUT0/VCOUT1/INTP3/INTP4/TI02/TO02/SO11/SDA11 | 1 Hz RTC output, touch channel 13, and secondary SPI/I²C interface - extends communication and timing flexibility |
Key Features
| Feature | Design Value |
|---|---|
| True Low-Power Platform | 61 µA/MHz active current at TA = 125°C; HALT/STOP modes enable sub-µA sleep for battery-powered HMI |
| Integrated Capacitive Touch Sensing Unit (CTSU) | 15-channel hardware-accelerated CTSU eliminates external touch controller and reduces BOM cost by ≥$0.35 |
| High-Accuracy On-Chip Oscillator | ±1.0% frequency accuracy @ 16 MHz (TA = −20 to +85°C); removes need for external crystal in cost-sensitive applications |
| Real-Time Clock with Calendar | 99-year calendar, alarm, and clock correction; enables time-stamped logging and scheduled wake-up without external RTC |
| Self-Programming Flash | Code flash reprogramming in-application without boot loader; supports field firmware updates over UART/I²C |
| Mixed-Signal Integration | 11-channel ADC, dual comparators, temperature sensor, and internal references - replaces 3–4 discrete analog components |
Applications
| Smart Appliance Control Panel | Industrial Motor Drive Interface |
|---|---|
|
Use Scenario: Touch-enabled user interface on washing machine or HVAC control board with LED indicators and buzzer feedback. IC Role / Device Role / Timing Role: Primary HMI controller handling capacitive touch decoding, LED PWM dimming, buzzer tone generation, and UART communication to main MCU. Use Value: Integrated CTSU and PCLBUZ0 eliminate external touch controller and audio driver ICs, reducing component count by 2 and PCB area by 12 mm². |
Use Scenario: Local sensor interface and safety monitoring node in 3-phase motor drive cabinet with temperature, current, and fault status reporting. IC Role / Device Role / Timing Role: Dedicated sensor acquisition unit performing ADC sampling, comparator-based overcurrent detection, and RTC-timestamped event logging. Use Value: −40°C to +105°C rating and on-chip temperature sensor enable direct mounting near power modules without external thermal protection circuitry. |
| Energy Meter Front-End | Building Automation Sensor Node |
|
Use Scenario: Data concentrator front-end in DIN-rail mounted electricity meter collecting pulse inputs, tamper switches, and display backlight control. IC Role / Device Role / Timing Role: System management MCU managing optical pulse counting (TI00), GPIO-based tamper detection (INTP0–INTP9), and LCD segment driving via SCK00/SCL00. Use Value: 10 external interrupt channels and hardware timer capture allow simultaneous monitoring of 8+ mechanical switch inputs with sub-10 µs response latency. |
Use Scenario: Wireless-ready environmental sensor node measuring temperature, humidity (via I²C sensor), and occupancy (via capacitive proximity). IC Role / Device Role / Timing Role: Sensor fusion hub acquiring analog sensor data (ANI0–ANI6), running CTSU for proximity detection, and communicating via I²C to ESP32 host MCU. Use Value: Shared pins (e.g., P01 for ANI0, TS00, and SDA00) enable 3 distinct sensor functions on one I/O, minimizing routing congestion in 2-layer PCB designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1214AGNA#20 | Same package and pinout; 16 KB code flash (vs. 32 KB), A-grade (−40°C to +85°C) | Suitable for consumer-grade appliances without extended temperature requirements | Select when firmware size ≤16 KB and ambient temperature stays below +85°C |
| R5F1214CMNA#20 | Same package and pinout; M-grade (−40°C to +125°C), identical 32 KB flash and peripherals | Required for under-hood automotive or high-temp industrial enclosures | Choose only if system-level thermal validation confirms sustained >+105°C operation |
Compared with R5F1214AGNA#20 and R5F1214CMNA#20, the R5F1214CGNA#20 uniquely balances industrial temperature resilience (+105°C), full 32 KB flash headroom for future firmware expansion, and cost-effective HWQFN packaging - making it optimal for mid-tier industrial HMI where reliability and scalability intersect.
Availability
R5F1214CGNA#20 is available at Aetrix Electronics and suitable for smart appliance control panels, industrial motor drive interfaces, energy meter front-ends, and building automation sensor nodes requiring stable component supply across extended temperature ranges.
Supply support for R5F1214CGNA#20 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 management solutions for industrial, automotive, and IoT markets.
The RL78/G16 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, space-constrained HMI and sensor interface applications - emphasizing integrated analog peripherals and robust industrial qualification.
FAQ
What is the maximum operating frequency and instruction timing of the R5F1214CGNA#20?
The R5F1214CGNA#20 supports a maximum CPU operating frequency of 16 MHz using its high-speed on-chip oscillator. At this speed, the minimum instruction execution time is 0.0625 μs. The device also supports ultra-low-speed operation at 32.768 kHz (30.5 μs per instruction) for RTC and deep-sleep modes - both frequencies are generated internally without external crystals unless higher accuracy is required.
Does the R5F1214CGNA#20 support in-system programming and debug interfaces?
Yes, the R5F1214CGNA#20 includes an on-chip debug function accessible via the TOOL0 (P40) and TOOLRxD/TOOLTxD (P01/P00) pins. It supports full in-circuit debugging and self-programming of code flash memory without requiring a boot swap mechanism - enabling field firmware updates through UART or I²C interfaces using standard Renesas flash programming tools.
How many analog input channels and what ADC resolution does the R5F1214CGNA#20 provide?
The R5F1214CGNA#20 features an 8/10-bit successive approximation register (SAR) ADC with up to 11 analog input channels (ANI0–ANI10). Resolution is selectable per conversion, and the ADC operates across the full 2.4–5.5 V supply range. Internal reference voltages (0.815 V TYP.) and temperature sensor input are included, eliminating external reference components for most precision sensing tasks.
What is the purpose and capability of the CTSU in the R5F1214CGNA#20?
The capacitive touch sensing unit (CTSU) in the R5F1214CGNA#20 provides hardware-accelerated touch detection across 15 dedicated channels. It supports both self-capacitance (up to 15 independent keys) and mutual-capacitance (matrix configuration supporting up to 16 keys) modes. This integrated CTSU offloads touch processing from the CPU, reduces firmware complexity, and removes the need for external touch controller ICs in cost-sensitive HMI designs.
What are the supported serial communication interfaces on the R5F1214CGNA#20?
The R5F1214CGNA#20 supports multiple serial interfaces: up to 3 simplified SPI (CSI) channels, up to 3 UART channels, up to 3 simplified I²C (RIIC) channels, and 1 full I²C (IICA) channel. These interfaces share pins dynamically (e.g., P00 serves SO00/TxD0/SCK11/SCL11/SCLA0), allowing flexible peripheral assignment via the Peripheral I/O Redirection Register (PIOR) without requiring additional GPIOs.
R5F1214CGNA#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 16-WFQFN Exposed Pad
- Series:
- RL78/G16
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F1214CGNA#20 FAQ
1.How can I place an order for R5F1214CGNA#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1214CGNA#20 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 R5F1214CGNA#20 reliable?
The price and inventory of R5F1214CGNA#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1214CGNA#20 is usually 5 days.
3.What payment methods are accepted for R5F1214CGNA#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1214CGNA#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1214CGNA#20?
R5F1214CGNA#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1214CGNA#20 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 R5F1214CGNA#20?
For technical support, including R5F1214CGNA#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1214CGNA#20 requirements.
6.How does Aetrix verify that R5F1214CGNA#20 is sourced from the original manufacturer or authorized distributors?
All R5F1214CGNA#20 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 R5F1214CGNA#20 meets industry standards.
7.What is the process for return or replacement of R5F1214CGNA#20?
All R5F1214CGNA#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1214CGNA#20, 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 R5F1214CGNA#20 part is unused and in its original packaging.
Return procedure for R5F1214CGNA#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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