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Renesas R5F11TLGDFB#35
- Part No.:
- R5F11TLGDFB#35
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F11TLGDFB#35.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 64LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:585
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Product details
Overview
R5F11TLGDFB#35 from Renesas is a 64-pin, 64 KB flash, 6 KB RAM RL78/I1C 16-bit microcontroller optimized for electric AMI power meter applications. It features independent-power-supply RTC, hardware AES encryption (GCM/ECB/CBC), 24-bit ΔΣ A/D converter (4 channels), and ultra-low-power operation from 1.9 V to 5.5 V with HALT/STOP/SNOOZE modes.
For engineers reviewing the R5F11TLGDFB#35 datasheet, R5F11TLGDFB#35 pinout, R5F11TLGDFB#35 application, or R5F11TLGDFB#35 equivalent, this page delivers verified technical context, real-world use cases in utility metering, precise pin functionality mapping, and validated alternative options for design continuity and supply resilience.
Technical Context
The R5F11TLGDFB#35 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable minimum instruction execution time (0.03125 µs at 32 MHz PLL clock). It integrates a dedicated 24-bit ΔΣ A/D converter supporting metrology-grade current/voltage sensing, alongside a 10-bit SAR A/D converter (4 channels) for auxiliary measurements.
Its peripheral set includes UART0/1/2 (LIN-capable), simplified SPI (CSI0/1), simplified I²C (IIC00/10), full I²C (IICA0), 8-channel 16-bit timer array, independent-power-supply RTC with calendar and alarm, and LCD controller supporting up to 19 segment × 4 common outputs - all operating under single-supply 1.9–5.5 V conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Flash / RAM | 64 KB code flash (1 KB block size) + 2 KB data flash + 6 KB on-chip RAM |
| Operating Voltage | 1.9 V to 5.5 V - enables direct interface with battery-backed RTC and metering sensors without level-shifting |
| A/D Converters | 24-bit ΔΣ ADC (4 channels, metrology-optimized) + 10-bit SAR ADC (4 channels, VDD-referenced) |
| Clock Sources | 32 MHz PLL, high-speed on-chip oscillator (1–24 MHz, ±1.0% accuracy), low-speed on-chip oscillator (15 kHz) |
| Security & Timing | Hardware AES-128/192/256 (GCM/ECB/CBC); independent-power-supply RTC with calendar, alarm, and correction |
| Package | 64-pin LFQFP (10 × 10 mm, 0.5 mm pitch), industrial temperature range (−40°C to +85°C) |
Pinout & Package
64-pin plastic LFQFP (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, tray packaging (Ver.1.1, #35 suffix). REGC must be connected to VSS via 0.47–1 µF capacitor.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P07/SO00/TxD0/TI02/TO02/INTP2/TOOLTxD | Port 0 bit 7 / UART0 TX / Timer I/O / Interrupt input | Primary serial communication output and timer signal routing; supports tool interface and interrupt-driven event capture |
| P06/SI00/RxD0/SDA00/TI03/TO03/INTP4/TOOLRxD | Port 0 bit 6 / UART0 RX / I²C data / Timer I/O / Interrupt input | Dual-role serial interface pin enabling UART debug and simplified I²C sensor bus connectivity |
| P43/TI00/TO00/PCLBUZ0/RTCOUT | Port 4 bit 3 / Timer I/O / Buzzer output / RTC 1 Hz/64 Hz output | Direct RTC timebase output for external synchronization and programmable buzzer tone generation |
| VRTC / REGC / VBAT | RTC power supply / regulator capacitor / backup battery input | Enables continuous RTC operation during main power loss; supports battery-backed timekeeping and secure metering logs |
| ANIP0–ANIP3 / ANIN0–ANIN3 | ΔΣ ADC positive/negative analog inputs | Dedicated metrology-grade differential inputs for shunt-based current sensing with 24-bit resolution |
Key Features
| Feature | Design Value |
|---|---|
| Independent-power-supply RTC | Maintains accurate timekeeping (99-year calendar, alarm, correction) even when main VDD is off, using VRTC/VBAT |
| Hardware AES engine | Offloads encryption/decryption (GCM/ECB/CBC) from CPU, enabling secure firmware updates and AMI data transmission |
| 24-bit ΔΣ A/D converter | Provides metrology-grade precision for current/voltage measurement without external sigma-delta modulators |
| SNOOZE mode operation | Allows background ADC conversion and RTC update while CPU remains halted - critical for low-power AMI wake-up cycles |
| Peripheral I/O redirection | Enables dynamic remapping of functions (e.g., UART, timer, I²C) to alternate pins via PIOR0 register - simplifies PCB layout reuse |
Applications
| Smart Electricity Meter | AMI Communication Module |
|---|---|
Use Scenario: Residential/utility smart meter performing real-time energy consumption measurement, tariff calculation, and tamper detection. IC Role / Device Role / Timing Role: Main metrology controller executing ΔΣ ADC sampling, AES-encrypted data packaging, and RTC-synchronized logging. Use Value: Integrated 24-bit ΔΣ ADC and hardware AES eliminate need for external metrology ICs and crypto accelerators - reducing BOM cost and board area. |
Use Scenario: Wireless or PLC-based AMI node aggregating and securely transmitting meter data to concentrators. IC Role / Device Role / Timing Role: Secure data gateway managing UART/LIN communication with meter ICs and encrypted RF/PLC modem interfacing. Use Value: SNOOZE mode enables low-power listening and wake-on-event; hardware AES ensures end-to-end data integrity per DLMS/COSEM standards. |
| Prepayment Energy Meter | Grid Monitoring Sensor Node |
Use Scenario: Pay-as-you-go meter requiring secure credit validation, local energy accounting, and battery-backed timekeeping. IC Role / Device Role / Timing Role: Trusted execution environment handling AES-decrypted token validation, RTC-governed credit expiry, and non-volatile data flash logging. Use Value: On-chip data flash (2 KB, 1M rewrite cycles) stores tamper logs and usage history with background operation - no external EEPROM required. |
Use Scenario: Distribution transformer or feeder monitoring unit measuring voltage harmonics, phase imbalance, and thermal trends. IC Role / Device Role / Timing Role: High-precision analog front-end controller acquiring synchronized multi-channel ΔΣ samples and timestamping events via RTC. Use Value: Independent VRTC supply and 24-bit ΔΣ ADC enable sub-0.1% THD measurement accuracy across wide temperature range (−40°C to +85°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F11TLEDFB#35 | Same 64-pin LFQFP package, identical core/peripherals, but 64 KB flash only - no AES circuit | Lacks hardware AES; suitable for non-secure metering or cost-sensitive designs where software encryption suffices | Select when cryptographic acceleration is not required and BOM cost optimization is prioritized over security compliance |
| R5F10NLGDFB#35 | Same 64-pin LFQFP, 128 KB flash, 8 KB RAM, and integrated AES - but higher memory and different flash block management | Supports larger firmware (e.g., dual-bank OTA updates) and more complex metrology algorithms; same AES/RTC/ΔΣ capability | Choose for future-proofing or applications requiring >64 KB code space while retaining identical security and timing architecture |
Compared with R5F11TLGDFB#35, R5F11TLEDFB#35 removes AES to reduce cost and power, while R5F10NLGDFB#35 increases flash and RAM for advanced firmware - all share identical pinout, RTC, ΔΣ ADC, and low-power modes, enabling seamless migration within the same PCB layout.
Availability
R5F11TLGDFB#35 is available at Aetrix Electronics and suitable for electric AMI power meters, prepayment energy meters, and grid monitoring sensor nodes requiring stable component supply, long-term lifecycle support, and industrial-grade reliability.
Supply support for R5F11TLGDFB#35 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 solutions for industrial, automotive, and infrastructure markets.
The RL78/I1C product line is designed specifically for ultra-low-power, high-precision metering applications - integrating metrology-grade ADCs, secure cryptography, and independent RTC in a single chip for utility-grade smart meters.
FAQ
What is the maximum operating frequency of the R5F11TLGDFB#35?
The R5F11TLGDFB#35 supports a maximum CPU clock of 32 MHz via its integrated PLL. This frequency is fully operational with the 24-bit ΔΣ A/D converter enabled, making it suitable for high-speed metrology sampling in AMI applications without clock gating compromises.
Does the R5F11TLGDFB#35 include hardware AES encryption?
Yes, the R5F11TLGDFB#35 includes a dedicated hardware AES circuit supporting GCM, ECB, and CBC cipher modes with 128/192/256-bit key lengths. This enables efficient, deterministic encryption for DLMS/COSEM-compliant AMI data transmission without burdening the RL78 CPU core.
What is the analog input configuration for the 24-bit ΔΣ A/D converter in the R5F11TLGDFB#35?
The R5F11TLGDFB#35 provides four differential analog input pairs (ANIP0/ANIN0 through ANIP3/ANIN3) dedicated to its 24-bit ΔΣ A/D converter. These inputs are optimized for shunt-based current sensing and support internal reference (AVRT) and calibration (AREGC, AVCM) for metrology-grade accuracy.
How does the independent power supply RTC function in the R5F11TLGDFB#35?
The R5F11TLGDFB#35 features an independent-power-supply RTC powered by VRTC and backed by VBAT. It maintains calendar, alarm, and correction functions even when main VDD is removed - ensuring uninterrupted timekeeping for secure log timestamps and tariff scheduling in smart meters.
What package and pin count does the R5F11TLGDFB#35 use?
The R5F11TLGDFB#35 uses a 64-pin plastic LFQFP package (10 × 10 mm, 0.5 mm pitch) with industrial temperature rating (−40°C to +85°C). Its pinout is fully compatible with other 64-pin RL78/I1C variants including R5F11TLEDFB#35 and R5F10NLGDFB#35.
R5F11TLGDFB#35 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RL78/I1C
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- CSI, I2C, IrDA, LINbus, UART/USART
- Peripherals:
- LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 27
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.7V ~ 5.5V
- Data Converters:
- A/D 4x10/24b Sigma-Delta
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F11TLGDFB#35 FAQ
1.How can I place an order for R5F11TLGDFB#35 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F11TLGDFB#35 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 R5F11TLGDFB#35 reliable?
The price and inventory of R5F11TLGDFB#35 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F11TLGDFB#35 is usually 5 days.
3.What payment methods are accepted for R5F11TLGDFB#35?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F11TLGDFB#35 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F11TLGDFB#35?
R5F11TLGDFB#35 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F11TLGDFB#35 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 R5F11TLGDFB#35?
For technical support, including R5F11TLGDFB#35 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F11TLGDFB#35 requirements.
6.How does Aetrix verify that R5F11TLGDFB#35 is sourced from the original manufacturer or authorized distributors?
All R5F11TLGDFB#35 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 R5F11TLGDFB#35 meets industry standards.
7.What is the process for return or replacement of R5F11TLGDFB#35?
All R5F11TLGDFB#35 units undergo pre-shipment inspection (PSI). If there is an issue with R5F11TLGDFB#35, 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 R5F11TLGDFB#35 part is unused and in its original packaging.
Return procedure for R5F11TLGDFB#35:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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