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Renesas R7F102G8E2DLA#AC0
- Part No.:
- R7F102G8E2DLA#AC0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 25-WFLGA
- Datasheet:
-
R7F102G8E2DLA#AC0.pdf
- Description:
- MCU:RL78
- Quantity:
- Payment:
- Shipping:
Inventory:3,654
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Product details
Overview
R7F102G8E2DLA#AC0 from Renesas is a 25-pin WFLGA-packaged RL78/G22 16-bit microcontroller with 64 KB code flash, 4 KB RAM, and 2 KB data flash, operating from 1.6 V to 5.5 V. It delivers true low-power performance (37.5 µA/MHz active, 200 nA STOP mode), integrates up to 29 capacitive touch sensors, and supports UART, I²C, SPI, RTC, and 16-bit timers - ideal for battery-powered HMI and industrial sensor nodes.
For engineers reviewing the R7F102G8E2DLA#AC0 datasheet, R7F102G8E2DLA#AC0 pinout, R7F102G8E2DLA#AC0 application, or R7F102G8E2DLA#AC0 equivalent, key selection criteria include its 25-pin WFLGA (3 × 3 mm, 0.5 mm pitch) footprint, -40°C to +85°C temperature grade, 64 KB flash capacity, CTSU2La capacitive sensing unit, and SNOOZE mode sequencer for ultra-low-power event-driven operation.
Technical Context
The RL78/G22 core implements a CISC architecture with 3-stage pipeline and configurable instruction timing - supporting high-speed execution at 32 MHz (0.03125 µs min) or ultra-low-speed operation at 32.768 kHz (30.5 µs min). Its SNOOZE mode sequencer executes up to 32 preconfigured commands without CPU, flash, or RAM activation, enabling deterministic low-power background processing.
Peripheral integration includes a 10-bit ADC (up to 10 channels), dual I²C interfaces (IICA/IICA2), up to 4 UARTA channels (LIN-capable), and an Event Link Controller (ELC) that routes 20 event signals between peripherals without CPU intervention - reducing latency and power in real-time control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time response and low-energy per instruction. |
| Flash / RAM | 64 KB code flash + 2 KB data flash + 4 KB SRAM; supports background rewriting and boot swapping for robust firmware updates. |
| Operating Voltage | 1.6 V to 5.5 V; allows direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V peripherals without level shifters. |
| Power Modes | HALT (0.25 µA), STOP (200 nA), SNOOZE (sub-µA); enables multi-year battery life in intermittent-sensing applications. |
| Capacitive Sensing | CTSU2La unit supporting up to 29 keys via self- or mutual-capacitance; eliminates external touch controller ICs. |
| Timers & RTC | Eight 16-bit TAU channels + 32-bit interval timer + RTC with alarm/correction; provides precise timekeeping and PWM generation without external components. |
| Communication | Up to 6 I²C, 4 UARTA (LIN-supported), 5 CSI/SPI channels; enables mixed-protocol connectivity in compact industrial gateways. |
Pinout & Package
Package: WFLGA-25 (3.0 × 3.0 mm, 0.50-mm pitch, bottom-side pads), RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 / P60 | I²C Clock (SCLA0) | Dedicated I²C bus clock line; supports standard/fast-mode I²C communication with internal pull-up capability. |
| A2 / REGC | Regulator Decoupling | Connects to VSS via 0.47–1 µF capacitor; stabilizes internal LDO output for analog/RTC circuitry. |
| A3 / P121 | Crystal Input (XT1) | Primary crystal oscillator input for 32.768 kHz or 1–20 MHz crystals; enables precision timing or low-power RTC operation. |
| A4 / P122 | Crystal Output (XT2) | Secondary crystal oscillator output; used with XT1 for full-swing crystal configuration or external clock input. |
| A5 / P40 | Debug Interface (TOOL0) | On-chip debug port pin; enables programming and real-time debugging via Renesas E2 studio and E2 Lite emulator. |
| B1 / P61 | I²C Data (SDAA0) | Dedicated I²C bus data line; complements P60 for independent I²C peripheral control. |
| B2 / VSS | Ground Reference | Main digital/analog ground plane connection; must be low-impedance for stable ADC and CTSU operation. |
| B3 / VDD | Supply Voltage | Single 1.6–5.5 V supply powering core, peripherals, and I/O; eliminates need for multiple voltage rails. |
| B4 / P137 | Interrupt Input (INTP0) | Edge-triggered external interrupt source; supports wake-up from STOP mode with sub-1 µs latency. |
| B5 / RESET | Reset Input | Active-low reset signal; accepts external reset or internal POR/LVD assertion to ensure deterministic startup. |
| C1 / P31 | Timer/Buzzer (PCLBUZ0) | Programmable clock output or buzzer driver; generates audible alerts or precise clock signals without CPU load. |
| C2 / P30 | Touch Sense (TSCAP) | Capacitive sensing reference capacitor terminal; connects to external 10–100 nF capacitor for CTSU calibration. |
| C3 / P20 | Analog Input (ANI0/AVREFP) | ADC channel 0 input and positive reference voltage source; enables ratiometric measurements with external sensors. |
| C4 / P00 | UART/Timers (TxD1/TI00) | Transmit data for UART1 and timer input capture; supports serial telemetry and pulse-width measurement simultaneously. |
| C5 / P01 | UART/Timers (RxD1/TO00) | Receive data for UART1 and timer output compare; enables bidirectional serial comms and PWM generation on same pin. |
| D1 / P16 | Timer/Interrupt (TI01/TO01/INTP5) | Configurable timer input capture/output compare and external interrupt; supports encoder counting and edge detection. |
| D2 / P17 | Timer/UART (TI02/TO02/TxD0) | Timer channel and UART0 transmit; enables synchronized timing and serial transmission in motor control feedback loops. |
| D3 / P12 | UART/Timers (TxD0/TOOLTxD) | Primary UART0 transmit and debug serial output; simplifies firmware logging and field diagnostics via single pin. |
| D4 / P21 | Analog Input (ANI1/AVREFM) | ADC channel 1 input and negative reference; enables differential ADC measurements for noise-immune sensor readings. |
| D5 / P22 | Analog Input (ANI2/TS20) | ADC channel 2 input and capacitive touch sensor 20; supports simultaneous analog sensing and touch HMI on one pin. |
| E1 / P130 | Touch Sense (TS19) | Capacitive touch sensor channel 19; extends HMI beyond 16-pin variants while maintaining minimal PCB area. |
| E2 / P50 | UART/Timers (SI11/SDA11/INTP1) | UART1 receive, I²C data, and interrupt input; enables multi-protocol peripheral interfacing with shared pin resources. |
| E3 / P11 | UART/Debug (RxD0/TOOLRxD/SDA00) | UART0 receive, debug serial input, and I²C data; consolidates debug, comms, and sensor bus functions into one I/O. |
| E4 / P10 | UART/Timers (SCK00/SCL00/TS11) | SPI clock, I²C clock, and touch sensor 11; supports concurrent serial comms and capacitive sensing without conflict. |
| E5 / P147 | Analog Input (ANI18/TS10) | ADC channel 18 input and touch sensor 10; provides high-channel-count analog + touch capability in space-constrained designs. |
Key Features
| Feature | Design Value |
|---|---|
| SNOOZE Mode Sequencer (SMS) | Executes 32-step command sequences (e.g., ADC sampling → compare → GPIO toggle) autonomously, cutting active current to near-zero during idle periods. |
| Capacitive Touch Unit (CTSU2La) | Supports up to 29 self-capacitance keys or matrix configurations; achieves <100 ms scan time at 3 V with built-in noise rejection. |
| Data Flash with BGO | Enables background rewriting of 2 KB data flash while executing code from main flash - critical for logging and parameter storage in unattended systems. |
| Event Link Controller (ELC) | Direct hardware routing of 20 peripheral events (e.g., ADC end-of-conversion → DMA trigger → UART transmit) eliminates CPU polling and ISR overhead. |
| Multi-Speed Oscillators | Integrated high-speed (1–32 MHz ±1%), middle-speed (1–4 MHz adjustable), and low-speed (32.768 kHz) oscillators - removes external crystals for most use cases. |
| Real-Time Clock (RTC) | Full calendar (seconds to years), alarm interrupt, and auto-correction; maintains accurate time across power cycles using VDD or backup battery. |
Applications
| Smart Thermostat HMI | Industrial Sensor Node |
|---|---|
|
Use Scenario: Compact wall-mounted thermostat with capacitive touch buttons, ambient temperature/humidity sensing, and wireless telemetry. IC Role / Device Role: Main system controller managing touch UI, ADC-based sensor acquisition, RTC-based scheduling, and UART-to-Sub-GHz radio interface. Use Value: Integrated CTSU2La replaces discrete touch ICs; 200 nA STOP mode extends 2xAA battery life to >5 years; BGO data flash stores calibration offsets across firmware updates. |
Use Scenario: DIN-rail mounted environmental monitor measuring vibration, temperature, and gas concentration in factory settings. IC Role / Device Role: Edge-processing node performing analog signal conditioning, FFT preprocessing via TAU, and event-triggered data upload via UART/RS-485. Use Value: ELC links accelerometer interrupt → DMA → UART transmit without CPU wake-up; SNOOZE sequencer samples sensors every 10 s at <1 µA average current. |
| Portable Medical Device | Home Appliance Control Board |
|
Use Scenario: Battery-powered pulse oximeter with OLED display, optical sensor interface, and USB-C charging status monitoring. IC Role / Device Role: System-on-chip handling photodiode ADC conversion, LED drive timing (via TAU PWM), touch button navigation, and USB enumeration logic. Use Value: 1.6 V minimum operating voltage enables operation down to single-cell Li-ion (3.0 V) or two alkaline cells (2.4 V); integrated RTC timestamps clinical measurements. |
Use Scenario: Washing machine main control board requiring motor phase control, water level sensing, keypad scanning, and buzzer feedback. IC Role / Device Role: Primary MCU coordinating triac firing (TAU PWM), resistive keypad scan (CTSU2La), water pressure ADC, and audio alert generation (PCLBUZ). Use Value: Single-chip solution reduces BOM count by eliminating separate touch controller, buzzer driver, and RTC IC; HALT mode cuts standby power to 0.25 µA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7F102G8C2DLA#AC0 | Same package and pinout, but 32 KB code flash and identical 4 KB RAM/2 KB data flash. | Targeted at cost-sensitive designs with smaller firmware footprints; lacks headroom for future feature expansion. | Select when firmware size remains ≤28 KB and long-term scalability is not required. |
| R7F102GBE3CFP#AA0 | 32-pin LQFP-32 package, 64 KB flash, same RL78/G22 core and peripheral set, but adds 2 extra ADC channels and 2 more touch inputs. | Preferred for designs needing higher I/O count, additional analog sensing, or easier hand-soldering during prototyping. | Choose when board layout allows larger footprint and ≥32 GPIOs or ≥12 ADC channels are needed. |
Compared with R7F102G8C2DLA#AC0, the R7F102G8E2DLA#AC0 provides 32 KB more flash for complex HMI or OTA update support; versus R7F102GBE3CFP#AA0, it trades 7 pins and 2 ADC channels for 30% smaller PCB area and lower assembly cost in volume production.
Availability
R7F102G8E2DLA#AC0 is available at Aetrix Electronics and suitable for smart home controllers, portable medical monitors, industrial sensor nodes, and appliance HMI panels requiring stable component supply and long lifecycle support.
Supply support for R7F102G8E2DLA#AC0 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 ultra-low-power embedded applications demanding high integration, capacitive touch, and robust real-time control - delivering optimized silicon for battery-operated and energy-conscious systems.
FAQ
What is the maximum operating frequency of the R7F102G8E2DLA#AC0?
The R7F102G8E2DLA#AC0 supports a maximum CPU operating frequency of 32 MHz using the high-speed on-chip oscillator, achieving a minimum instruction execution time of 0.03125 µs. This frequency is fully supported across its entire operating voltage range (1.6 V to 5.5 V) and temperature grade (-40°C to +85°C).
Does the R7F102G8E2DLA#AC0 support capacitive touch sensing?
Yes, the R7F102G8E2DLA#AC0 integrates the CTSU2La capacitive touch sensing unit, supporting up to 29 self-capacitance keys or mutual-capacitance matrix configurations. It operates across the full VDD range (1.8 V to 5.5 V) and includes built-in noise cancellation for reliable operation in electrically noisy environments.
What debug interface does the R7F102G8E2DLA#AC0 use?
The R7F102G8E2DLA#AC0 uses the on-chip debug interface accessible via pins P40 (TOOL0) and P11 (TOOLRxD), compatible with Renesas E2 Lite and E2 emulators. It supports full SWD-style debugging, flash programming, real-time variable watch, and breakpoint execution without requiring dedicated debug headers.
Can the R7F102G8E2DLA#AC0 operate from a single 3.3 V supply?
Yes, the R7F102G8E2DLA#AC0 is fully specified to operate from 1.6 V to 5.5 V, including standard 3.3 V rails. At 3.3 V, it delivers 37.5 µA/MHz active current and maintains full functionality of all peripherals - ADC, CTSU2La, UART, I²C, and RTC - with no derating required.
How many UART channels does the R7F102G8E2DLA#AC0 support?
The R7F102G8E2DLA#AC0 supports up to four UARTA channels, with UART0 and UART1 available on the 25-pin WFLGA package. UART0 is accessible on pins P10/P11/P12; UART1 on P00/P01. Both support LIN bus protocol, automatic baud rate detection, and fractional baud rate generation.
R7F102G8E2DLA#AC0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 25-WFLGA
- Series:
- RL78/G22
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- 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:
- 64KB (64K 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7F102G8E2DLA#AC0 FAQ
1.How can I place an order for R7F102G8E2DLA#AC0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7F102G8E2DLA#AC0 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 R7F102G8E2DLA#AC0 reliable?
The price and inventory of R7F102G8E2DLA#AC0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7F102G8E2DLA#AC0 is usually 5 days.
3.What payment methods are accepted for R7F102G8E2DLA#AC0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7F102G8E2DLA#AC0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7F102G8E2DLA#AC0?
R7F102G8E2DLA#AC0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7F102G8E2DLA#AC0 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 R7F102G8E2DLA#AC0?
For technical support, including R7F102G8E2DLA#AC0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7F102G8E2DLA#AC0 requirements.
6.How does Aetrix verify that R7F102G8E2DLA#AC0 is sourced from the original manufacturer or authorized distributors?
All R7F102G8E2DLA#AC0 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 R7F102G8E2DLA#AC0 meets industry standards.
7.What is the process for return or replacement of R7F102G8E2DLA#AC0?
All R7F102G8E2DLA#AC0 units undergo pre-shipment inspection (PSI). If there is an issue with R7F102G8E2DLA#AC0, 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 R7F102G8E2DLA#AC0 part is unused and in its original packaging.
Return procedure for R7F102G8E2DLA#AC0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7F102G8E2DLA#AC0 Tags
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