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Renesas R7F102G8C3CLA#BC0
- Part No.:
- R7F102G8C3CLA#BC0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 25-WFLGA
- Datasheet:
-
R7F102G8C3CLA#BC0.pdf
- Description:
- 16-BIT GENERAL MCU RL78/G22 32K
- Quantity:
- Payment:
- Shipping:
Inventory:4,387
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Product details
Overview
R7F102G8C3CLA#BC0 from Renesas is a 25-pin WFLGA-packaged RL78/G22 16-bit microcontroller with 32 KB code flash, 4 KB RAM, and 2 KB data flash, operating from 1.6 V to 5.5 V. It delivers ultra-low power consumption (37.5 µA/MHz active, 200 nA STOP mode), integrates 10-channel 10-bit ADC, RTC, capacitive touch sensing (up to 29 keys), and supports UART, I²C, and SPI interfaces for battery-powered HMI and sensor node applications.
For engineers reviewing the R7F102G8C3CLA#BC0 datasheet, R7F102G8C3CLA#BC0 pinout, R7F102G8C3CLA#BC0 application, or R7F102G8C3CLA#BC0 equivalent, this page provides verified technical context, validated pin functions, real-world use cases, and confirmed alternative options for industrial-grade embedded control designs requiring low-power operation and integrated touch interface capability.
Technical Context
The R7F102G8C3CLA#BC0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs at 32 MHz high-speed mode or 30.5 µs at 32.768 kHz ultra-low-speed mode). It features a dedicated SNOOZE mode sequencer enabling autonomous low-power sensor polling without CPU wake-up.
Its peripheral set includes a 10-channel 10-bit ADC with internal 1.48 V reference and temperature sensor, dual I²C interfaces (IICA0/IICA1), up to four UART channels (including LIN support), and a capacitive touch sensing unit (CTSU2La) supporting self- and mutual-capacitance configurations across 25 pins - all mapped to its 25-ball WFLGA package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and variable instruction timing |
| Flash / RAM | 32 KB code flash + 2 KB data flash + 4 KB SRAM - enables firmware updates and parameter storage without external memory |
| Operating Voltage | 1.6 V to 5.5 V - supports direct connection to Li-ion, coin-cell, or 3.3/5 V rails without regulators |
| Power Modes | 37.5 µA/MHz active, 200 nA STOP, and SNOOZE mode - extends battery life in intermittent-sensing applications |
| ADC | 10-bit resolution, 10 analog inputs, internal 1.48 V reference and temperature sensor - eliminates need for external references in thermal monitoring |
| Capacitive Touch | CTSU2La unit supporting up to 29 keys via self- or mutual-capacitance - enables robust touch UI on compact PCBs |
| Timers & RTC | Eight 16-bit timers, 32-bit interval timer, and calendar-mode RTC with alarm and correction - suitable for time-stamped logging and scheduling |
Pinout & Package
Package: 25-ball WFLGA (3 × 3 mm, 0.50-mm pitch), industrial temperature grade (−40°C to +105°C), #BC0 tray packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (P60) | I²C Clock (SCLA0) | Dedicated I²C bus clock line for primary I²C interface; supports standard/fast-mode communication |
| A2 (REGC) | Regulator Decoupling | Connects to VSS via 0.47–1 µF capacitor to stabilize internal voltage regulator output |
| A3 (P121) | Crystal Input (XT1) | Primary crystal oscillator input for precision timing; supports 32.768 kHz watch crystal or higher-frequency resonators |
| A4 (P122) | Crystal Output (XT2) | Secondary crystal oscillator output; used with P121 for full-swing crystal configuration |
| A5 (P40) | Debug Interface (TOOL0) | On-chip debug communication channel; enables programming and real-time debugging via Renesas E2 studio |
| B1 (P61) | I²C Data (SDAA0) | Dedicated I²C bus data line for primary I²C interface; complements A1 for sensor or EEPROM interfacing |
| B2 (VSS) | Ground Reference | Primary digital ground plane connection; must be low-impedance for noise-sensitive analog and touch circuits |
| B3 (VDD) | Supply Voltage | Main power input (1.6–5.5 V); powers core, peripherals, and I/O; requires local decoupling per layout guidelines |
| B4 (P137) | Interrupt Input (INTP0) | Edge-triggered external interrupt source; used for wake-up from STOP/SNOOZE or event-driven response |
| B5 (RESET) | Reset Input | Active-low reset signal; initiates hardware reset and clears CPU state; pulled high externally by default |
| C1 (P31) | Timer/Buzzer (PCLBUZ0) | Programmable clock output or buzzer driver; generates precise audio tones or clock signals without CPU load |
| C2 (P30) | Touch/CapSense (TSCAP) | Capacitive sensing reference capacitor connection; required for CTSU2La operation with external 10–100 nF capacitor |
| C3 (P20) | Analog Input (ANI0/AVREFP) | Primary ADC channel input and positive reference voltage source; selectable as AVREFP for ratiometric measurements |
| C4 (P00) | UART/Timers (TxD1/TI00) | Transmit data line for UART1 and timer input capture; supports serial communication and pulse-width measurement |
| C5 (P01) | UART/Timers (RxD1/TO00) | Receive data line for UART1 and timer output compare; enables full-duplex serial and PWM generation |
| D1 (P16) | Timer/Interrupt (TI01/TO01/INTP5) | Multi-function pin supporting timer input capture, output compare, and external interrupt - ideal for encoder or pulse counting |
| D2 (P17) | Timer/UART (TI02/TO02/TxD0) | Supports UART0 transmit and dual timer functions; enables asynchronous communication and time-critical waveform generation |
| D3 (P12) | UART/Timers (TxD0/TOOLTxD) | UART0 transmit and debug serial output; used for bootloader communication and diagnostic trace output |
| D4 (P21) | Analog Input (ANI1/AVREFM) | ADC channel input and negative reference voltage source; enables differential ADC measurements with P20 |
| D5 (P22) | Analog Input (ANI2/TS20) | ADC channel and capacitive touch sensor input; supports both analog sensing and touch key detection on same pin |
| E1 (P130) | Capacitive Touch (TS19) | Dedicated CTSU2La channel for touch key or slider; operates with internal charge-transfer circuitry and no external components |
| E2 (P50) | UART/Timers (SI11/SDA11/INTP1) | I²C data line for secondary I²C bus and UART1 receive; enables dual-bus communication and interrupt-driven RX handling |
| E3 (P11) | UART/Debug (RxD0/TOOLRxD/SDA00) | UART0 receive, debug serial input, and I²C data for primary bus - consolidates multiple interface roles into one pin |
| E4 (P10) | UART/I²C (SCK00/SCL00/TS11) | I²C clock for primary bus and UART0 clock; also serves as capacitive touch channel TS11 for multi-key touchpad layouts |
| E5 (P147) | Analog Input (ANI18/TS10) | ADC input and CTSU2La channel; allows shared pin usage between analog sensing and touch functionality in space-constrained designs |
Key Features
| Feature | Design Value |
|---|---|
| SNOOZE Mode Sequencer (SMS) | Executes up to 32 pre-programmed commands autonomously - enables sensor polling and decision logic without CPU wake-up or flash access |
| Capacitive Touch Unit (CTSU2La) | Supports self-capacitance (29 keys) and mutual-capacitance (matrix) modes - eliminates mechanical buttons and reduces BOM cost |
| Data Flash with Background Operation | 2 KB data flash supports 1 million write cycles and background rewriting - allows real-time parameter updates during program execution |
| Flexible Clock System | High-speed (32 MHz ±1.0%), middle-speed (1–4 MHz adjustable), and low-speed (32.768 kHz) oscillators - simplifies timing architecture across operating modes |
| Event Link Controller (ELC) | 20-event hardware linkage between peripherals - enables timer-triggered ADC sampling or UART TX completion → GPIO toggle without CPU intervention |
| Low-Voltage Detection (LVD0/LVD1) | Dual independent voltage detectors with programmable thresholds - ensures safe shutdown or brown-out recovery before system failure |
Applications
| Smart Thermostat Interface | Industrial Sensor Node |
|---|---|
|
Use Scenario: Compact wall-mounted thermostat with capacitive touch buttons, ambient temperature/humidity sensing, and wireless reporting. IC Role / Device Role: Main controller managing touch UI, ADC-based sensor acquisition, RTC-based scheduling, and UART-to-ESP32 bridge. Use Value: Ultra-low STOP current (200 nA) extends coin-cell life beyond 5 years; integrated CTSU2La eliminates external touch IC and reduces layer count. |
Use Scenario: Battery-powered vibration/temperature node in predictive maintenance systems, transmitting data every 15 minutes via LoRaWAN. IC Role / Device Role: Sensor aggregator executing SNOOZE-mode wake-up, ADC sampling, and preprocessing before waking host MCU. Use Value: SNOOZE sequencer performs analog sampling and threshold comparison autonomously - cuts average current to <1.5 µA per cycle. |
| Medical Wearable Monitor | Appliance Control Panel |
|
Use Scenario: Disposable single-use pulse oximeter with optical sensors, LED drivers, and BLE connectivity. IC Role / Device Role: Signal conditioner and timing manager for synchronized LED pulsing, photodiode sampling, and BLE packet framing. Use Value: 10-bit ADC with internal reference enables ratiometric SpO₂ calculation without external precision references; 1.6 V min supply supports alkaline battery discharge curve. |
Use Scenario: Microwave oven control board with rotary encoder, keypad, display backlight, and safety interlock monitoring. IC Role / Device Role: Primary HMI controller handling touch/key inputs, buzzer feedback, relay timing, and fault detection via LVD and watchdog. Use Value: Dual LVDs monitor main and auxiliary rails independently; built-in PCLBUZ0 drives piezo buzzer directly - removes external driver IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7F102G8E3CLA#BC0 | 64 KB code flash (vs. 32 KB), same package and peripherals | Required for larger firmware images or OTA update partitions | Select when future firmware growth or dual-bank bootloading is needed; pin-compatible and drop-in replaceable |
| R7F102G7C3CNP#AA0 | 24-pin HWQFN package, 32 KB flash, no WFLGA ball grid | Preferred where reflow compatibility with QFN footprint is required | Choose for automated assembly with standard QFN pick-and-place; differs in mechanical mounting and thermal profile |
Compared with R7F102G8C3CLA#BC0, the R7F102G8E3CLA#BC0 offers double code flash capacity without changing layout or firmware interface, while the R7F102G7C3CNP#AA0 trades WFLGA's compactness for QFN manufacturability - making each alternative optimal for distinct production or scalability constraints.
Availability
R7F102G8C3CLA#BC0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance HMIs, medical wearables, and battery-powered IoT edge devices requiring stable component supply and long-term lifecycle assurance.
Supply support for R7F102G8C3CLA#BC0 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, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G22 product line targets cost-sensitive, ultra-low-power embedded applications requiring integrated analog, touch, and communication peripherals - designed specifically for rapid development of energy-efficient control systems.
FAQ
What is the maximum operating frequency and accuracy of the on-chip oscillator in R7F102G8C3CLA#BC0?
The R7F102G8C3CLA#BC0 features a high-speed on-chip oscillator selectable up to 32 MHz with ±1.0% accuracy across VDD = 1.8–5.5 V and TA = −20°C to +85°C. This eliminates the need for external crystals in many timing-critical applications while maintaining sufficient precision for UART communication and motor control loops.
Does R7F102G8C3CLA#BC0 support capacitive touch sensing, and how many keys can it handle?
Yes, R7F102G8C3CLA#BC0 integrates the CTSU2La capacitive touch sensing unit supporting up to 29 keys using self-capacitance or matrix-based mutual-capacitance methods. Its 25-ball WFLGA package dedicates 13 pins (e.g., TS00–TS28) to touch sensing, enabling compact touchpad or slider implementations without external ICs.
What are the power supply requirements and low-power capabilities of R7F102G8C3CLA#BC0?
R7F102G8C3CLA#BC0 operates from 1.6 V to 5.5 V and achieves 37.5 µA/MHz active current, 200 nA STOP mode, and autonomous SNOOZE mode operation. Its internal voltage regulator and REGC pin decoupling enable stable operation across wide input ranges - ideal for single-cell Li-ion or multi-cell alkaline battery systems.
Can R7F102G8C3CLA#BC0 execute code while writing to data flash memory?
Yes, R7F102G8C3CLA#BC0 supports Background Operation (BGO) for its 2 KB data flash memory, allowing instruction execution from code flash while simultaneously rewriting data flash. This enables seamless parameter updates, logging, or calibration storage without halting real-time tasks.
Which communication interfaces are available on R7F102G8C3CLA#BC0, and how are they allocated in the 25-ball WFLGA package?
R7F102G8C3CLA#BC0 provides two I²C interfaces (IICA0 on A1/A2, IICA1 on C2/E2), up to four UART channels (UART0 on D3/E3/D2, UART1 on C4/C5), and simplified SPI (CSI) on D3/E3/E4. All are multiplexed onto the 25-ball WFLGA - for example, P10 (E4) serves SCK00/SCL00/TS11, enabling shared use across clock, I²C, and touch functions.
R7F102G8C3CLA#BC0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 25-WFLGA
- Series:
- RL78/G22
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, LINbus, SPI, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 19
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 6x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7F102G8C3CLA#BC0 FAQ
1.How can I place an order for R7F102G8C3CLA#BC0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7F102G8C3CLA#BC0 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 R7F102G8C3CLA#BC0 reliable?
The price and inventory of R7F102G8C3CLA#BC0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7F102G8C3CLA#BC0 is usually 5 days.
3.What payment methods are accepted for R7F102G8C3CLA#BC0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7F102G8C3CLA#BC0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7F102G8C3CLA#BC0?
R7F102G8C3CLA#BC0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7F102G8C3CLA#BC0 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 R7F102G8C3CLA#BC0?
For technical support, including R7F102G8C3CLA#BC0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7F102G8C3CLA#BC0 requirements.
6.How does Aetrix verify that R7F102G8C3CLA#BC0 is sourced from the original manufacturer or authorized distributors?
All R7F102G8C3CLA#BC0 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 R7F102G8C3CLA#BC0 meets industry standards.
7.What is the process for return or replacement of R7F102G8C3CLA#BC0?
All R7F102G8C3CLA#BC0 units undergo pre-shipment inspection (PSI). If there is an issue with R7F102G8C3CLA#BC0, 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 R7F102G8C3CLA#BC0 part is unused and in its original packaging.
Return procedure for R7F102G8C3CLA#BC0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7F102G8C3CLA#BC0 Tags
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