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Renesas R7F102G4E3CNP#AA0
- Part No.:
- R7F102G4E3CNP#AA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
R7F102G4E3CNP#AA0.pdf
- Description:
- MCU:RL78
- Quantity:
- Payment:
- Shipping:
Inventory:3,143
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Product details
Overview
R7F102G4E3CNP#AA0 from Renesas is a 16-pin HWQFN-packaged RL78/G22 16-bit microcontroller with 64 KB code flash, 4 KB RAM, and ultra-low-power operation (37.5 µA/MHz active, 200 nA STOP mode), targeting capacitive touch-enabled consumer electronics such as smart home controls and battery-powered UI modules.
For engineers reviewing the R7F102G4E3CNP#AA0 datasheet, R7F102G4E3CNP#AA0 pinout, R7F102G4E3CNP#AA0 application, or R7F102G4E3CNP#AA0 equivalent, key selection criteria include its 16-pin HWQFN (3 × 3 mm) footprint, integrated CTSU2La capacitive sensing unit supporting up to 29 keys, and dual-voltage operation (1.6–5.5 V) for mixed-signal system integration.
Technical Context
The RL78/G22 core implements a 3-stage pipeline CISC architecture with configurable instruction timing-0.03125 µs at 32 MHz (high-speed on-chip oscillator) or 30.5 µs at 32.768 kHz (subsystem clock)-enabling dynamic power/performance trade-offs. It integrates a SNOOZE mode sequencer (SMS) that executes up to 32 low-power sensor-processing commands without CPU, flash, or RAM activation.
Peripheral integration includes a 10-bit A/D converter (10-channel analog input, internal 1.48 V reference), RTC with alarm and correction, and flexible serial interfaces: up to 6 I²C/Simplified I²C channels, 4 UARTA (LIN-capable), and 5 Simplified SPI (CSI) channels-all configurable via peripheral I/O redirection register (PIOR).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; supports high-speed (32 MHz) and ultra-low-speed (32.768 kHz) clock domains |
| Memory | 64 KB code flash (2 KB block size), 2 KB data flash (1M rewrite cycles), 4 KB SRAM |
| Power Consumption | 37.5 µA/MHz active current; 200 nA STOP mode; HALT, STOP, and SNOOZE low-power modes |
| Capacitive Sensing | CTSU2La unit supporting self-capacitance (up to 29 keys) and mutual-capacitance matrix configurations |
| Analog Peripherals | 10-bit ADC with 10 input channels, internal 1.48 V reference, and integrated temperature sensor |
| Timers & RTC | Eight 16-bit TAU channels; 32-bit interval timer; RTC with alarm interrupt and ±1 ppm correction capability |
| Operating Voltage | 1.6 V to 5.5 V supply range; supports direct interface with 1.8 V, 2.5 V, and 3.0 V external logic |
Pinout & Package
Package: HWQFN-16 (3 × 3 mm, 0.50-mm pitch), exposed die pad, industrial-grade (-40°C to +105°C) operating temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P122 / X2 / XT2 / EXCLK / EXCLKS | Crystal/oscillator input | Primary high-frequency crystal connection (up to 20 MHz); also accepts external clock or EXCLKS signal for synchronous operation |
| P121 / X1 / XT1 | Crystal/oscillator input | Complementary crystal terminal; forms resonant circuit with P122 for main system clock generation |
| REGC | Regulator capacitor terminal | Must be connected to VSS via 0.47–1 µF capacitor to stabilize internal voltage regulator output |
| VSS | Ground reference | Primary digital ground; exposed die pad must be connected to VSS for thermal and electrical integrity |
| VDD | Power supply | Main 1.6–5.5 V supply; powers core, peripherals, and I/O; decoupling required per layout guidelines |
| RESET | Active-low reset input | Asynchronous reset assertion; internal POR and LVD ensure reliable startup under varying supply conditions |
| P137 / INTP0 | Interrupt input | Dedicated external interrupt pin (INTP0); supports edge-triggered wake-up from STOP/SNOOZE modes |
| P30 / INTP3 / TSCAP / RTC1HZ / SCL11 | Multiplexed I/O | Configurable as touch sensor capacitor (TSCAP), RTC 1-Hz output, I²C clock (SCL11), or interrupt source (INTP3) |
| P17 / TI02 / TO02 / TS18 / SDA11 | Multiplexed I/O | Supports timer input/output (TI02/TO02), capacitive touch (TS18), and I²C data (SDA11) functions |
| P12 / SO00 / TxD0 / TOOLTxD / TS13 | Multiplexed I/O | Configurable as SPI output, UART transmit, debug TX, or touch sense channel (TS13) |
| P11 / SI00 / RxD0 / TOOLRxD / SDA00 / TS12 | Multiplexed I/O | Supports SPI input, UART receive, debug RX, I²C data, and touch sensing (TS12) |
| P10 / SCK00 / SCL00 / TS11 | Multiplexed I/O | Configurable as SPI clock, I²C clock, or capacitive touch channel (TS11) |
| P22 / ANI2 / TS20 | Analog/touch input | ADC input channel ANI2 and dedicated touch sense line TS20; shared analog front-end path |
| P21 / ANI1 / AVREFM | Analog reference | ADC negative reference (AVREFM) and analog input ANI1; enables ratiometric measurement with AVREFP |
| P20 / ANI0 / AVREFP | Analog reference | ADC positive reference (AVREFP) and analog input ANI0; used with AVREFM for precision analog sensing |
| P40 / TOOL0 | Debug interface | On-chip debugging port (TOOL0); enables flash programming, breakpoint setting, and real-time trace via Renesas E2 studio |
Key Features
| Feature | Design Value |
|---|---|
| SNOOZE Mode Sequencer (SMS) | Executes up to 32 preloaded sensor-processing commands (e.g., CTSU measurement, threshold comparison) autonomously-no CPU, flash, or RAM required-reducing average system power by >90% in periodic UI polling |
| Capacitive Touch Unit (CTSU2La) | Single-pin self-capacitance support (29 keys) or matrix mutual-capacitance configuration; operates across full 1.8–5.5 V VDD range with built-in noise immunity and auto-calibration |
| Background Data Flash Operation | Enables execution from code flash while rewriting 2 KB data flash (BGO); critical for field firmware updates and nonvolatile parameter storage without system interruption |
| Flexible Clock System | Three independent oscillators: high-speed (±1.0% accuracy, 1–32 MHz), middle-speed (adjustable), and low-speed (32.768 kHz ±20%); selectable per peripheral for optimal power/performance balance |
| Peripheral I/O Redirection (PIOR) | Allows dynamic remapping of up to 16 peripheral functions (e.g., UART, I²C, timers) to alternate pins-eliminates fixed pin conflicts and simplifies PCB layout reuse across variants |
| Security & Reliability | Flash block erase/write prohibition, boot swapping, flash shield window, and dual voltage detectors (LVD0/LVD1) ensure secure firmware execution and robust brown-out recovery |
Applications
| Smart Thermostat Keypad | Wireless Sensor Node Controller |
|---|---|
|
Use Scenario: Battery-powered wall-mounted thermostat with 8-key capacitive touch panel and BLE connectivity. IC Role / Device Role / Timing Role: Primary MCU managing touch scan, ambient temperature reading (via internal sensor), display refresh, and BLE subsystem wakeup scheduling. Use Value: 200 nA STOP mode extends CR2032 battery life beyond 5 years; CTSU2La delivers stable touch response across -10°C to +40°C ambient. |
Use Scenario: Sub-GHz IoT node monitoring door/window status, humidity, and light level in commercial buildings. IC Role / Device Role / Timing Role: System controller coordinating ultralow-power sensor acquisition, data preprocessing, and scheduled RF transmission bursts. Use Value: SNOOZE mode sequencer performs periodic ADC sampling and threshold checks without waking CPU-cutting average current to <1 µA between transmissions. |
| Industrial HMI Button Panel | USB-C Power Monitor Interface |
|
Use Scenario: DIN-rail mounted control panel with 12 tactile-free touch buttons and RS-485 communication to PLC. IC Role / Device Role / Timing Role: Dedicated touch interface MCU handling debounced key detection, LED feedback, and protocol translation to Modbus RTU. Use Value: 16-pin HWQFN footprint minimizes board area; 1.6–5.5 V operation allows direct use of 3.3 V or 5 V industrial rails without LDO overhead. |
Use Scenario: USB-C PD sink monitor module measuring VBUS voltage/current and negotiating power contracts via CC logic. IC Role / Device Role / Timing Role: Real-time analog acquisition engine interfacing with shunt amplifier and USB-C CC PHY, executing PD policy engine. Use Value: Integrated 10-bit ADC with internal reference eliminates external voltage reference IC; RTC enables precise time-stamped logging of power events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7F102G4C3CNP#AA0 | Same package and pinout; 32 KB code flash (vs. 64 KB), identical peripherals and low-power features | Targeted at cost-sensitive designs with smaller firmware footprints (<64 KB) and no future feature expansion needs | Select when firmware size is confirmed ≤28 KB and long-term code growth is unlikely |
| R7F102G6E3CSP#CA0 | 20-pin LSSOP package; adds two analog inputs (ANI16/ANI17), one extra UART channel, and larger 4.4 × 6.5 mm footprint | Suitable for designs requiring additional serial interfaces or analog sensing but constrained by 16-pin density limits | Choose when board space permits LSSOP and extra I/O or UART channels are needed |
Compared with R7F102G4E3CNP#AA0, the R7F102G4C3CNP#AA0 reduces flash capacity without altering power profile or touch capability-ideal for mature, size-optimized firmware-while the R7F102G6E3CSP#CA0 trades compactness for expanded analog/serial I/O in a larger package, addressing different mechanical and functional constraints.
Availability
R7F102G4E3CNP#AA0 is available at Aetrix Electronics and suitable for smart home controls, industrial HMI panels, and battery-powered sensor nodes requiring stable component supply, long-lifecycle assurance, and industrial-temperature grade performance.
Supply support for R7F102G4E3CNP#AA0 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/G22 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and touch-enabled human-machine interface applications-balancing performance, integration, and energy efficiency.
FAQ
What is the maximum operating frequency and clock accuracy of the R7F102G4E3CNP#AA0?
The R7F102G4E3CNP#AA0 supports a maximum operating frequency of 32 MHz using its high-speed on-chip oscillator, which maintains ±1.0% accuracy across 1.8–5.5 V supply and -20°C to +85°C ambient. External crystal operation (via P121/P122) supports up to 20 MHz with tighter tolerance depending on crystal specification. The R7F102G4E3CNP#AA0 does not support frequencies above 32 MHz.
Does the R7F102G4E3CNP#AA0 support capacitive touch sensing, and how many keys can it handle?
Yes, the R7F102G4E3CNP#AA0 integrates the CTSU2La capacitive touch sensing unit, supporting up to 29 self-capacitance keys using a single I/O pin per key, or mutual-capacitance matrix configurations with separate TX/RX pin assignments. It operates across the full 1.8–5.5 V VDD range and includes automatic drift compensation and noise rejection algorithms. The R7F102G4E3CNP#AA0's 16-pin package provides dedicated TSxx pins for all supported touch channels.
What low-power modes are available on the R7F102G4E3CNP#AA0, and what is the typical current draw in each?
The R7F102G4E3CNP#AA0 offers HALT, STOP, and SNOOZE modes. HALT draws ~1.2 µA (RAM retained, clocks stopped); STOP draws 200 nA (RAM retained, all clocks halted); SNOOZE draws ~1.5 µA while executing autonomous sensor sequences. Active-mode current is 37.5 µA/MHz at 32 MHz. All values are specified at VDD = 3.3 V, TA = 25°C. The R7F102G4E3CNP#AA0 achieves these figures without external components beyond the mandatory REGC capacitor.
Can the R7F102G4E3CNP#AA0 execute code while writing to data flash memory?
Yes, the R7F102G4E3CNP#AA0 supports Background Operation (BGO) for data flash, allowing program execution from code flash while simultaneously rewriting the 2 KB data flash area. This enables seamless firmware updates, parameter logging, or calibration storage without halting application logic. The R7F102G4E3CNP#AA0 guarantees 1,000,000 write/erase cycles for data flash under typical operating conditions.
What debug interface does the R7F102G4E3CNP#AA0 use, and is external hardware required?
The R7F102G4E3CNP#AA0 uses the on-chip TOOL0 debug interface (pin P40), compatible with Renesas E2 emulator and E2 studio IDE. No external debug probe is strictly required for basic flash programming-SWD-based programming is supported via standard JTAG/SWD adapters. The R7F102G4E3CNP#AA0 does not require a separate debug header; TOOL0 operates over the same 16-pin HWQFN footprint used for application I/O.
R7F102G4E3CNP#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 16-WFQFN Exposed Pad
- 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:
- 11
- 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 3x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7F102G4E3CNP#AA0 FAQ
1.How can I place an order for R7F102G4E3CNP#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7F102G4E3CNP#AA0 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 R7F102G4E3CNP#AA0 reliable?
The price and inventory of R7F102G4E3CNP#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7F102G4E3CNP#AA0 is usually 5 days.
3.What payment methods are accepted for R7F102G4E3CNP#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7F102G4E3CNP#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7F102G4E3CNP#AA0?
R7F102G4E3CNP#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7F102G4E3CNP#AA0 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 R7F102G4E3CNP#AA0?
For technical support, including R7F102G4E3CNP#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7F102G4E3CNP#AA0 requirements.
6.How does Aetrix verify that R7F102G4E3CNP#AA0 is sourced from the original manufacturer or authorized distributors?
All R7F102G4E3CNP#AA0 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 R7F102G4E3CNP#AA0 meets industry standards.
7.What is the process for return or replacement of R7F102G4E3CNP#AA0?
All R7F102G4E3CNP#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7F102G4E3CNP#AA0, 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 R7F102G4E3CNP#AA0 part is unused and in its original packaging.
Return procedure for R7F102G4E3CNP#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7F102G4E3CNP#AA0 Tags
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