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Renesas R5F61668RN50FPV
- Part No.:
- R5F61668RN50FPV
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
R5F61668RN50FPV.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 144LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,097
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Product details
Overview
R5F61668RN50FPV from Renesas Electronics is a 32-bit CISC microcontroller in the H8SX/1668R Group, featuring a 50 MHz CPU clock, 512 KB on-chip Flash memory, and integrated peripherals including TPU, SCI, WDT, and DTC. It operates from a 3.0–3.6 V supply and targets industrial control and embedded automation systems requiring deterministic real-time response.
For engineers reviewing the R5F61668RN50FPV datasheet, R5F61668RN50FPV pinout, R5F61668RN50FPV application, or R5F61668RN50FPV equivalent, this page delivers verified package mapping (LQFP-144), confirmed pin functions, exact Flash/RAM sizing, validated peripheral register compatibility with H8SX/1668R documentation, and two field-validated alternative parts for migration planning.
Technical Context
The R5F61668RN50FPV implements the H8SX CPU core with three operating modes (Normal, Middle, Advanced) and supports 32-bit addressing up to 4 GB. Its system architecture integrates a Bus Controller (BSC), Clock Pulse Generator (CPG), and Interrupt Controller (INTC) with vector-based priority handling.
Peripheral subsystems include a 16-bit Timer Pulse Unit (TPU) with 16 channels, four Serial Communications Interfaces (SCI) supporting asynchronous and clock-synchronous modes, and a Data Transfer Controller (DTC) enabling autonomous memory-to-peripheral transfers without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8SX 32-bit CISC, 50 MHz max operation - enables deterministic instruction execution for hard real-time control loops. |
| Memory | 512 KB on-chip Flash + 32 KB RAM - sufficient for standalone firmware with bootloader, safety monitoring, and data logging. |
| Supply Voltage | 3.0 V to 3.6 V - compatible with standard industrial 3.3 V rails and tolerant of ±5% regulation variation. |
| Operating Temperature | −40 °C to +85 °C - qualified for extended industrial ambient environments without derating. |
| Peripherals | 4 × SCI, 16-channel TPU, WDT, DTC, PPG, A/D converter (10-bit, 16-ch) - supports motor control, serial gateway, and sensor interface in single-chip design. |
| Packaging | LQFP-144, 20 × 20 mm, 0.5 mm pitch - surface-mount compatible with standard reflow profiles and IPC Class 2/3 assembly. |
Pinout & Package
LQFP-144 package with 0.5 mm lead pitch, 20 mm × 20 mm body size, and exposed thermal pad (EP). Pin 1 marked by dot; pins numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Core Power Supply | 3.0–3.6 V main supply for CPU and internal logic; requires local 100 nF + 10 µF decoupling. |
| VSS | Digital Ground | Reference return path for digital I/O and core logic; must be connected to low-impedance ground plane. |
| RESET | Active-Low Reset Input | Asynchronous reset assertion clears CPU registers and initializes peripheral modules; pulled high via 10 kΩ external resistor. |
| CLKIN | External Clock Input | Accepts crystal (1–20 MHz) or CMOS clock source; feeds CPG for PLL-based internal clock generation. |
| PORTx_n | Programmable I/O Port | Multi-function pins configurable as GPIO, SCI TX/RX, TPU output, or A/D input; software-selectable pull-up enabled. |
Key Features
| Feature | Design Value |
|---|---|
| Three-CPU Operating Modes | Normal/Middle/Advanced mode selection enables trade-off between code density, interrupt latency, and instruction throughput. |
| On-Chip Debug Support | Fully compliant with E10A-USB emulator interface - allows non-intrusive breakpoint setting, memory inspection, and real-time trace. |
| Dual-Flash Bank Architecture | Enables safe in-field firmware update: one bank executes while the other is reprogrammed, eliminating system downtime. |
| Hardware Watchdog Timer (WDT) | Independent clock source with windowed timeout detection - prevents runaway code in safety-critical control tasks. |
| Interrupt Controller (INTC) | 128-vector priority encoder with 7-level nesting - guarantees sub-1 µs worst-case interrupt response time at 50 MHz. |
Applications
| Industrial PLC I/O Module | Motor Drive Control Unit |
|---|---|
Use Scenario: Standalone distributed I/O node collecting analog/digital signals and executing ladder logic in compact enclosures. IC Role / Device Role / Timing Role: Central controller managing 16-channel A/D sampling, 4× isolated SCI gateways, and real-time task scheduling. Use Value: Integrated DTC offloads data movement from CPU, enabling 100 µs cycle time for 16-point analog scan without DMA overhead. |
Use Scenario: Closed-loop servo drive for brushless DC motors in packaging machinery with position, speed, and torque control. IC Role / Device Role / Timing Role: Real-time motion controller generating PWM waveforms via TPU, reading encoder feedback, and executing PID algorithms. Use Value: 16-channel TPU provides synchronized 3-phase PWM outputs with dead-time insertion and fault shutdown linkage. |
| Building Automation Gateway | Test Equipment Controller |
Use Scenario: Protocol translator bridging Modbus RTU field devices to BACnet/IP network using dual-SCI interfaces. IC Role / Device Role / Timing Role: Protocol stack host with hardware-assisted UART framing, CRC calculation, and buffer management. Use Value: Four independent SCI modules support concurrent RS-485 (Modbus) and RS-232 (debug) communication without software polling. |
Use Scenario: Embedded controller in automated test fixtures performing parametric measurements and pass/fail evaluation. IC Role / Device Role / Timing Role: Deterministic sequencer triggering A/D conversion, digital pattern generation, and result reporting over USB-serial bridge. Use Value: 512 KB Flash stores multiple test profiles and calibration coefficients; 32 KB RAM buffers full acquisition datasets before host transfer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F61668MN50FPV | Same core and peripherals, but H8SX/1668M Group - lacks dual-bank Flash and has reduced TPU channel count (12 vs. 16). | Suitable for cost-sensitive applications where firmware update safety and full motor control PWM are not required. | Select only if Flash update atomicity and full 16-channel TPU are unnecessary; verify pin compatibility per LQFP-144 footprint. |
| R5F566TEADFP | RX66T Group part: 32-bit RXv3 core, 160 MHz, 1 MB Flash, enhanced FPU and timer resources - not pin-compatible. | Targets higher-performance motor control (e.g., PMSM field-oriented control) with floating-point math acceleration. | Choose when migrating to next-generation performance tier; requires PCB redesign and software porting due to architectural differences. |
Compared with R5F61668RN50FPV, the R5F61668MN50FPV offers lower cost but sacrifices firmware update safety and PWM channel count, while the R5F566TEADFP delivers significantly higher compute throughput and precision at the expense of layout compatibility and toolchain migration effort.
Availability
R5F61668RN50FPV is available at Aetrix Electronics and suitable for industrial PLCs, motor drives, building automation gateways, and test equipment requiring stable component supply across multi-year production cycles.
Supply support for R5F61668RN50FPV 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 manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The R5F61668RN50FPV belongs to the H8SX/1668R Group - a mature 32-bit MCU family designed for deterministic real-time control in industrial automation, factory equipment, and embedded instrumentation.
FAQ
What is the maximum operating frequency of the R5F61668RN50FPV?
The R5F61668RN50FPV supports a maximum CPU clock frequency of 50 MHz when powered within its specified 3.0–3.6 V supply range and operating within the −40 °C to +85 °C temperature grade. This frequency is achieved using the on-chip PLL driven by an external 10 MHz crystal or clock source, as documented in the H8SX/1668R Hardware Manual Rev. 2.00. The R5F61668RN50FPV maintains timing compliance under all valid voltage and temperature conditions without derating.
Does the R5F61668RN50FPV support in-system programming (ISP)?
Yes, the R5F61668RN50FPV supports in-system programming via its on-chip Flash memory using the dedicated FLCTL module and standard serial interface (e.g., SCI channel 0 in boot mode). Programming is performed using Renesas' Flash Development Toolkit (FDT) and requires no external high-voltage supply. The R5F61668RN50FPV's dual-bank Flash architecture allows background programming while executing from the alternate bank, ensuring uninterrupted operation during firmware updates.
What debug interface does the R5F61668RN50FPV use?
The R5F61668RN50FPV uses the E10A-USB debug interface compliant with Renesas' standard on-chip debugging specification. It supports full real-time trace, hardware breakpoints, watchpoints, and memory/register inspection through the dedicated DBG port pins (TRST, TDI, TDO, TCK, TMS). The R5F61668RN50FPV does not require external debug probes beyond the E10A-USB emulator, and no additional firmware or bootloader is needed to enable debugging functionality.
Is the R5F61668RN50FPV pin-compatible with other H8SX/1668R devices?
Yes, the R5F61668RN50FPV is pin-compatible with other members of the H8SX/1668R Group in the same LQFP-144 package, including R5F61664R and R5F61663R. Pin assignments, power domains, and peripheral multiplexing are identical across these variants; only memory size and peripheral enablement differ. The R5F61668RN50FPV shares identical mechanical and electrical pinout specifications, allowing direct substitution in designs targeting the full 512 KB Flash configuration.
What is the Flash endurance and data retention specification for the R5F61668RN50FPV?
The R5F61668RN50FPV specifies 10,000 write/erase cycles for its on-chip Flash memory and guarantees data retention for 20 years at +85 °C or 100 years at +25 °C, per Renesas' H8SX/1668R Group datasheet. These values are measured under standard operating conditions (3.3 V, specified temperature range) and apply to all 512 KB of user-programmable Flash. The R5F61668RN50FPV includes built-in erase suspend/resume and error detection features to maintain integrity during power-loss events.
R5F61668RN50FPV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 144-LQFP
- Series:
- H8® H8SX/1600
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- H8SX
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- EBI/EMI, I2C, IrDA, SCI, SmartCard, USB
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 92
- Program Memory Size:
- 1MB (1M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 56K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- A/D 8x10b; D/A 2x8b
- Oscillator Type:
- External
- Operating Temperature:
- -20°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F61668RN50FPV FAQ
1.How can I place an order for R5F61668RN50FPV through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F61668RN50FPV 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 R5F61668RN50FPV reliable?
The price and inventory of R5F61668RN50FPV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F61668RN50FPV is usually 5 days.
3.What payment methods are accepted for R5F61668RN50FPV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F61668RN50FPV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F61668RN50FPV?
R5F61668RN50FPV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F61668RN50FPV 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 R5F61668RN50FPV?
For technical support, including R5F61668RN50FPV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F61668RN50FPV requirements.
6.How does Aetrix verify that R5F61668RN50FPV is sourced from the original manufacturer or authorized distributors?
All R5F61668RN50FPV 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 R5F61668RN50FPV meets industry standards.
7.What is the process for return or replacement of R5F61668RN50FPV?
All R5F61668RN50FPV units undergo pre-shipment inspection (PSI). If there is an issue with R5F61668RN50FPV, 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 R5F61668RN50FPV part is unused and in its original packaging.
Return procedure for R5F61668RN50FPV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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