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Renesas R5F10NLGDFB#50
- Part No.:
- R5F10NLGDFB#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F10NLGDFB#50.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 64LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
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Product details
Overview
R5F10NLGDFB#50 from Renesas is a 64-pin RL78/I1C 16-bit microcontroller designed for electric AMI power meter applications. It features 128 KB flash, 8 KB RAM, 2 KB data flash, independent-power-supply RTC, hardware AES encryption, and ultra-low-power operation from 1.9 V to 5.5 V with HALT/STOP/SNOOZE modes.
For engineers reviewing the R5F10NLGDFB#50 datasheet, R5F10NLGDFB#50 pinout, R5F10NLGDFB#50 application, or R5F10NLGDFB#50 equivalent, key selection criteria include its 64-pin LFQFP package, 24-bit ΔΣ A/D converter (4 channels), LCD controller supporting up to 42 segments, and AES-128/192/256 support for secure firmware and metering data handling.
Technical Context
The R5F10NLGDFB#50 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs at 32 MHz PLL clock). It integrates a dedicated voltage regulator for ΔΣ ADC (AVRT/AREGC/AVCM), independent RTC powered by VRTC, and battery backup function enabling calendar retention during main power loss.
Its peripheral set includes dual serial array units (UART0/1/2, CSI0/1, simplified I²C), 8-channel 16-bit timer array, 24-bit ΔΣ A/D converter with internal reference (1.45 V) and temperature sensor, and LCD controller with programmable VL1–VL4 bias and CAPL/CAPH terminals for external capacitor coupling.
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 / Data Flash | 128 KB code flash, 8 KB on-chip RAM, 2 KB data flash with 1M rewrite cycles and background operation |
| Operating Voltage | 1.9 V to 5.5 V - supports single-supply operation across industrial metering rails |
| ΔΣ A/D Converter | 24-bit resolution, 4-channel input with internal 1.45 V reference and temperature sensor |
| RTC | Independent power supply RTC with calendar (99 years), alarm, correction, and 1 Hz/64 Hz output |
| AES Engine | Hardware AES supporting GCM/ECB/CBC modes with 128/192/256-bit keys - enables secure firmware updates and encrypted meter data |
| Package | 64-pin LFQFP (10 × 10 mm, 0.5 mm pitch) - compatible with standard industrial PCB assembly |
Pinout & Package
64-pin plastic LFQFP (10 × 10 mm, 0.5 mm pitch); REGC must be connected to VSS via 0.47–1 µF capacitor per datasheet caution.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P05/SCK00/SCL00 | SPI/I²C clock interface | Shared SCK00 (CSI) and SCL00 (simplified I²C) - enables dual-protocol communication on one pin |
| P43/TI00/TO00/PCLBUZ0 | Timer input/output + buzzer output | Configurable as timer channel 0 I/O or programmable buzzer clock source - supports audible alerts without external driver |
| P70–P74/SEG16–SEG20/KR0–KR4 | LCD segment + key return | Simultaneous LCD drive and keypad scanning - reduces BOM count in meter front-panel designs |
| VRTC / VBAT | RTC power supply | Dedicated low-leakage power domain - maintains RTC and calendar during main power interruption |
| ANIP0–ANIP3 / ANIN0–ANIN3 | ΔΣ ADC analog inputs | Dedicated differential inputs for high-precision metrology - optimized for shunt-based current sensing in AMI meters |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power HALT/STOP/SNOOZE modes | Enables sub-µA sleep current - critical for battery-backed meter data retention and wake-on-event operation |
| Self-programming with boot swap | Allows field firmware updates with rollback safety - essential for remote AMI firmware deployment and compliance patching |
| On-chip hardware AES engine | Offloads cryptographic processing from CPU - preserves real-time metering performance while meeting DLMS/COSEM security mandates |
| Independent-power-supply RTC | Maintains accurate timekeeping and calendar functions even when VDD is absent - required for tariff scheduling and event logging |
| 24-bit ΔΣ A/D with internal reference | Delivers >100 dB SNR for precision current/voltage measurement - meets IEC 62053-21 Class 0.5S accuracy requirements |
Applications
| Smart Electricity Meter (AMI) | Prepayment Energy Meter |
|---|---|
Use Scenario: Two-way communication-enabled residential/commercial electricity meter with remote firmware update, tamper detection, and time-of-use billing. IC Role / Device Role / Timing Role: Main system controller executing metrology algorithms, DLMS/COSEM protocol stack, AES-encrypted data transmission, and RTC-synchronized tariff switching. Use Value: Integrated 24-bit ΔΣ ADC and hardware AES eliminate need for external metrology IC and crypto co-processor - reducing BOM cost and board area. | Use Scenario: Pay-as-you-go energy meter requiring secure credit validation, local balance storage, and low-power display refresh. IC Role / Device Role / Timing Role: Secure host MCU managing encrypted token parsing, EEPROM-backed credit ledger, LCD driver with segment multiplexing, and battery-backed RTC for expiry tracking. Use Value: On-chip data flash with 1M rewrite cycles and battery backup ensures reliable credit persistence over 10+ years of operation. |
| Industrial Power Quality Monitor | Grid Edge Sensor Node |
Use Scenario: DIN-rail mounted device measuring harmonics, THD, flicker, and voltage sags/swells in LV/MV substations. IC Role / Device Role / Timing Role: Real-time signal processor capturing synchronized voltage/current waveforms using ΔΣ ADC, performing FFT in firmware, and timestamping events via independent RTC. Use Value: 128 KB flash accommodates complex harmonic analysis routines and waveform buffer storage - no external memory required. | Use Scenario: Solar-integrated grid-edge node monitoring PV generation, battery SOC, and export/import energy with secure cloud reporting. IC Role / Device Role / Timing Role: Low-power system orchestrator sampling sensors via 10-bit A/D and ΔΣ ADC, encrypting data with AES-GCM, and scheduling LoRaWAN transmissions using RTC alarm interrupts. Use Value: SNOOZE mode + RTC wake-up enables <10 µA average current - extends 3.6 V Li-SOCl₂ battery life beyond 10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10NLEDFB#50 | 64 KB flash, 6 KB RAM, same 64-pin LFQFP package and peripheral set - lacks AES engine | Suitable for non-secure metering or legacy AMI deployments without DLMS encryption requirements | Select when AES is unnecessary and lower memory footprint suffices for basic metrology and UI tasks |
| R5F10NMJDFB#50 | 80-pin LFQFP, 256 KB flash, 16 KB RAM, adds UART3/I²C3/CSI3 and 2 extra ADC channels - retains AES and RTC | Required for advanced meters with multi-interface gateways (PLC + RF + cellular) or higher-resolution waveform capture | Choose when expanding communication interfaces or adding secondary sensor domains beyond base AMI functionality |
Compared with R5F10NLEDFB#50, the R5F10NLGDFB#50 adds 64 KB flash and hardware AES for secure firmware/data - making it optimal for DLMS-compliant AMI. Versus R5F10NMJDFB#50, it trades pin count and memory for lower cost and smaller footprint in standard 64-pin meter designs.
Availability
R5F10NLGDFB#50 is available at Aetrix Electronics and suitable for smart electricity meters, prepayment energy meters, industrial power quality monitors, and grid edge sensor nodes requiring stable component supply and long-term industrial lifecycle support.
Supply support for R5F10NLGDFB#50 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
The RL78/I1C product line is engineered specifically for electric utility metering applications, integrating metrology-grade analog peripherals, secure cryptographic acceleration, and ultra-low-power operation to meet IEC 62053 and DLMS/COSEM standards.
FAQ
What is the maximum operating frequency of the R5F10NLGDFB#50?
The R5F10NLGDFB#50 supports a maximum CPU clock of 32 MHz via its integrated PLL. This frequency is achievable with VDD = 2.8 to 5.5 V and enables a minimum instruction execution time of 0.03125 µs. The high-speed on-chip oscillator also supports up to 24 MHz operation with ±1.0% accuracy across –20 to +85°C ambient.
Does the R5F10NLGDFB#50 support hardware AES encryption?
Yes, the R5F10NLGDFB#50 includes a dedicated on-chip AES circuit supporting GCM, ECB, and CBC cipher modes with 128-, 192-, and 256-bit key lengths. This hardware accelerator is confirmed in the datasheet's feature table and functional outline for R5F10N-series parts, enabling efficient encryption of metering data and firmware updates without CPU overhead.
What LCD capabilities does the R5F10NLGDFB#50 provide?
The R5F10NLGDFB#50 integrates an LCD controller/driver supporting up to 42 segment outputs and 8 common outputs (COM0–COM7). It offers selectable driving methods (capacitor split, internal boosting, external resistor division), programmable VL1–VL4 bias voltages, and dedicated CAPL/CAPH pins for external capacitor coupling - all verified for 64-pin variants in the RL78/I1C datasheet.
How much data flash memory does the R5F10NLGDFB#50 have, and what is its endurance?
The R5F10NLGDFB#50 includes 2 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical) at VDD = 1.9 to 5.5 V. It supports background operation (BGO), allowing program execution from code flash while rewriting data flash - essential for robust parameter storage and firmware update logging in AMI meters.
What are the power supply requirements for the RTC function in the R5F10NLGDFB#50?
The R5F10NLGDFB#50 requires a dedicated VRTC supply (1.6 V minimum) and VBAT backup rail to maintain RTC operation during main power loss. The VRTC pin must be decoupled with a low-leakage capacitor, and the battery backup function enables calendar retention and alarm triggering even when VDD is disconnected - a requirement explicitly specified for R5F10NLGDFB#50 in the RL78/I1C datasheet.
R5F10NLGDFB#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RL78/I1C
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 35
- 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 4x10b, 4x24b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10NLGDFB#50 FAQ
1.How can I place an order for R5F10NLGDFB#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10NLGDFB#50 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 R5F10NLGDFB#50 reliable?
The price and inventory of R5F10NLGDFB#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10NLGDFB#50 is usually 5 days.
3.What payment methods are accepted for R5F10NLGDFB#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10NLGDFB#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10NLGDFB#50?
R5F10NLGDFB#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10NLGDFB#50 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 R5F10NLGDFB#50?
For technical support, including R5F10NLGDFB#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10NLGDFB#50 requirements.
6.How does Aetrix verify that R5F10NLGDFB#50 is sourced from the original manufacturer or authorized distributors?
All R5F10NLGDFB#50 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 R5F10NLGDFB#50 meets industry standards.
7.What is the process for return or replacement of R5F10NLGDFB#50?
All R5F10NLGDFB#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10NLGDFB#50, 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 R5F10NLGDFB#50 part is unused and in its original packaging.
Return procedure for R5F10NLGDFB#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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