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Renesas R5F5631ACDLC#U0
- Part No.:
- R5F5631ACDLC#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 177-TFLGA
- Datasheet:
-
R5F5631ACDLC#U0.pdf
- Description:
- IC MCU 32BIT 768KB FLSH 177TFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,651
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Product details
Overview
R5F5631ACDLC#U0 from Renesas is a 100 MHz 32-bit RX CPU-based microcontroller in the RX631 Group, featuring 768 KB on-chip flash memory, 128 KB SRAM, 32 KB data flash, and integrated 12-bit/10-bit A/D converters, 10-bit D/A converters, RTC, USB 2.0 function controller, CAN, multiple SCI/I²C/RSPI interfaces, and hardware AES encryption (DEU). It operates from a single 2.7–3.6 V supply and supports industrial temperature range (−40 to +85°C) in a 176-pin LQFP package.
For engineers reviewing the R5F5631ACDLC#U0 datasheet, R5F5631ACDLC#U0 pinout, R5F5631ACDLC#U0 application, or R5F5631ACDLC#U0 equivalent, this page delivers verified technical context, key specifications, package details, real-world use cases, and validated alternative parts - all grounded in Renesas' official R01DS0098EJ0180 specification document.
Technical Context
The R5F5631ACDLC#U0 belongs to the RX631 Group - a subset of the RX63N/RX631 family that excludes Ethernet MAC and EDMAC, distinguishing it from RX63N variants. It implements the CISC Harvard-architecture RX CPU core with 5-stage pipeline, IEEE-754 single-precision FPU, MPU, and JTAG/FINE debug interfaces.
It supports up to 100 MHz operation with no wait-state flash access, four low-power modes (including deep software standby with SRAM backup), and peripheral clock domain separation (ICLK/PCLK/FCLK/BCLK). Its memory subsystem includes 768 KB main flash, 128 KB SRAM, and 32 KB reprogrammable data flash (100,000 write/erase cycles).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit CISC Harvard architecture with 5-stage pipeline, 165 DMIPS @ 100 MHz |
| Max Operating Frequency | 100 MHz system clock (ICLK); enables deterministic real-time control and high-throughput peripheral handling |
| Flash Memory | 768 KB on-chip main flash, zero-wait-state access at 100 MHz - eliminates instruction fetch stalls in time-critical code |
| SRAM | 128 KB on-chip SRAM, zero-wait-state access - supports large buffers, stack depth, and real-time data processing |
| A/D Converters | 21-channel 12-bit S12AD + 8-channel 10-bit AD; 1.0 μs conversion time @ 50 MHz PCLK - suitable for motor control and sensor fusion |
| D/A Converters | 2-channel 10-bit DA output (0 V to VREFH) - provides analog actuation signals without external DACs |
| Crypto Engine | Data Encryption Unit (DEU) supporting AES-128/192/256 in ECB/CBC modes - enables secure firmware updates and data-at-rest protection |
Pinout & Package
Package: PLQP0176KB-A - 176-pin LQFP, 24 × 24 mm, 0.5 mm pitch, RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Primary 2.7–3.6 V core and I/O supply pair; decoupling required per Renesas layout guidelines |
| XTAL / EXTAL | Main crystal oscillator input/output | Supports 4–16 MHz external crystal for precise system timing; PLL locks to generate 100 MHz ICLK |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU state and peripherals; compatible with external POR or supervisor ICs |
| MD0 / MD1 | Mode selection pins | Configure boot source (on-chip ROM vs. external bus) and debug interface (JTAG vs. FINE) |
| USB_VBUS / USB_DP / USB_DM | USB 2.0 function interface | Full-speed (12 Mbps) USB device operation; VBUS detection enables bus-powered mode negotiation |
| TXD0 / RXD0 | SCI0 asynchronous serial interface | UART-compatible communication channel with programmable baud rate generator - used for debug console or host interface |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE-754 single-precision hardware acceleration - reduces cycle count for math-intensive algorithms (e.g., motor FOC, sensor calibration) |
| Memory Protection Unit (MPU) | Configurable region-based access control - enforces task isolation in RTOS environments and prevents accidental memory corruption |
| Real-time clock (RTC) with battery backup | Calendar/timekeeping with VBATT support (2.0–3.6 V) - maintains timestamp across main power loss in industrial logging applications |
| Programmable pulse generator (PPG) | 32-channel pulse output triggered by MTU2/TPU - generates precise PWM waveforms for LED dimming or gate drivers without CPU overhead |
| Independent watchdog timer (IWDT) | Dedicated 14-bit counter driven by internal 125-kHz LOCO - ensures fail-safe recovery even if main clock fails |
| Temperature sensor + 12-bit A/D | On-die ±1°C sensor digitized via S12AD - enables thermal monitoring and self-compensation without external components |
Applications
| Industrial HMI Panel | Smart Energy Meter |
|---|---|
|
Use Scenario: Touch-enabled display panel with real-time data visualization, local configuration, and Modbus RTU communication over RS485. IC Role / Device Role / Timing Role: Main application processor executing GUI framework, managing USB HID for configuration, and driving SCI/RSPI peripherals for metering ICs and communication ICs. Use Value: Integrated 128 KB SRAM accommodates frame buffer and RTOS kernel; 768 KB flash stores firmware and localized language assets; hardware AES secures firmware updates. |
Use Scenario: DIN-rail mounted electricity meter with voltage/current sensing, kWh accumulation, tamper detection, and optical/IR communication interface. IC Role / Device Role / Timing Role: Central controller acquiring ADC samples, computing energy parameters, maintaining RTC calendar, and managing secure IR data exchange via SCI. Use Value: 21-channel 12-bit S12AD captures multi-phase analog inputs simultaneously; RTC with battery backup retains billing timestamps; IWDT ensures reliable recovery during grid transients. |
| Factory Automation I/O Module | Medical Diagnostic Sensor Hub |
|
Use Scenario: DIN-rail PLC I/O expansion module with digital input/output, analog current/voltage outputs, and CANopen fieldbus connectivity. IC Role / Device Role / Timing Role: Real-time I/O coordinator interfacing with isolated ADCs/DACs, managing CAN message scheduling, and executing cyclic redundancy checks on sensor data. Use Value: Dual CAN modules (32 mailboxes) handle redundant fieldbus traffic; DEU accelerates CRC-16/32 computation; PPG generates precise 4–20 mA loop control signals. |
Use Scenario: Portable diagnostic device aggregating ECG, SpO₂, and temperature sensor data, with Bluetooth LE host interface and local data storage. IC Role / Device Role / Timing Role: Signal acquisition hub synchronizing multi-sensor sampling, performing baseline correction, and preparing encrypted data packets for wireless transmission. Use Value: 10-bit AD channels acquire low-noise biomedical signals; hardware AES encrypts patient data before BLE transmission; 128 KB SRAM buffers multi-second waveform segments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F5631BDDLC#U0 | Same RX631 Group, identical package and pinout; 1 MB flash (vs. 768 KB), same 128 KB SRAM and peripherals | Higher firmware footprint tolerance; suitable when bootloader, OTA stack, or localization assets exceed 768 KB | Select R5F5631BDDLC#U0 if future firmware growth or dual-bank update capability is required |
| R5F5630ACDLC#U0 | RX630 Group part; same 768 KB flash/128 KB SRAM but lacks USB 2.0 function controller and DEU crypto engine | No native USB device support; no hardware AES - requires software crypto or external security IC for secure boot | Choose R5F5630ACDLC#U0 only if USB and AES are unused, and cost reduction is prioritized over feature headroom |
Compared with R5F5631ACDLC#U0, R5F5631BDDLC#U0 offers scalable flash for complex firmware while retaining full peripheral compatibility, whereas R5F5630ACDLC#U0 sacrifices USB and crypto to reduce BOM cost - making both viable alternatives depending on firmware size and security requirements.
Availability
R5F5631ACDLC#U0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, factory automation I/O modules, and medical diagnostic sensor hubs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for R5F5631ACDLC#U0 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 RX631 Group was designed for cost-optimized industrial control applications requiring rich peripheral integration, deterministic real-time performance, and functional safety readiness - without Ethernet overhead.
FAQ
What is the maximum operating frequency and core architecture of the R5F5631ACDLC#U0?
The R5F5631ACDLC#U0 features a 32-bit RX CPU core with a maximum operating frequency of 100 MHz, delivering 165 DMIPS performance. Its CISC Harvard architecture includes a 5-stage pipeline, variable-length instructions, and hardware floating-point support compliant with IEEE-754 single-precision standard - enabling efficient execution of control and signal-processing algorithms in the R5F5631ACDLC#U0.
Does the R5F5631ACDLC#U0 include an Ethernet controller?
No, the R5F5631ACDLC#U0 belongs to the RX631 Group, which explicitly excludes the Ethernet MAC and EDMAC modules present in the RX63N Group. This distinction is confirmed in Renesas' R01DS0098EJ0180 documentation, where Table 1.2 shows "Not available" for Ethernet controller in all RX631 packages - including the R5F5631ACDLC#U0's 176-pin LQFP variant.
What memory resources are integrated into the R5F5631ACDLC#U0?
The R5F5631ACDLC#U0 integrates 768 KB of on-chip flash memory (zero-wait-state at 100 MHz), 128 KB of SRAM (zero-wait-state), and 32 KB of reprogrammable data flash rated for 100,000 write/erase cycles. These resources are fully accessible in single-chip mode and support background programming - allowing firmware updates and parameter storage without halting application execution on the R5F5631ACDLC#U0.
Which communication interfaces does the R5F5631ACDLC#U0 support?
The R5F5631ACDLC#U0 supports USB 2.0 full-speed function mode (12 Mbps), three CAN channels (ISO 11898-1 compliant), up to 13 SCI channels (with UART, SPI, I²C, LIN modes), four I²C interfaces (one FM+), three RSPI channels, and one IEBus channel. It does not support Ethernet or USB host/OTG - confirming its positioning as a focused industrial control MCU within the RX631 Group.
Is the R5F5631ACDLC#U0 suitable for functional safety applications?
Yes, the R5F5631ACDLC#U0 includes multiple IEC 60730-compliant features: oscillation-stoppage detection, hardware CRC calculator, independent watchdog timer (IWDT) with dedicated LOCO clock, self-diagnostic A/D converter functionality, and register write protection. These capabilities support Class B compliance in appliance and industrial control systems - as documented in the R01DS0098EJ0180 specification for the RX631 Group.
R5F5631ACDLC#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 177-TFLGA
- Series:
- RX600
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- RX
- Core Size:
- 32-Bit Single-Core
- Speed:
- 100MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, LINbus, SCI, SPI, USB
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 133
- Program Memory Size:
- 768KB (768K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 32K x 8
- RAM Size:
- 128K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 3.6V
- Data Converters:
- A/D 8x10b, 21x12b; D/A 2x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F5631ACDLC#U0 FAQ
1.How can I place an order for R5F5631ACDLC#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F5631ACDLC#U0 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 R5F5631ACDLC#U0 reliable?
The price and inventory of R5F5631ACDLC#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F5631ACDLC#U0 is usually 5 days.
3.What payment methods are accepted for R5F5631ACDLC#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F5631ACDLC#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F5631ACDLC#U0?
R5F5631ACDLC#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F5631ACDLC#U0 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 R5F5631ACDLC#U0?
For technical support, including R5F5631ACDLC#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F5631ACDLC#U0 requirements.
6.How does Aetrix verify that R5F5631ACDLC#U0 is sourced from the original manufacturer or authorized distributors?
All R5F5631ACDLC#U0 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 R5F5631ACDLC#U0 meets industry standards.
7.What is the process for return or replacement of R5F5631ACDLC#U0?
All R5F5631ACDLC#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F5631ACDLC#U0, 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 R5F5631ACDLC#U0 part is unused and in its original packaging.
Return procedure for R5F5631ACDLC#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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