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Renesas R5F5631ACDFB#V0
- Part No.:
- R5F5631ACDFB#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
R5F5631ACDFB#V0.pdf
- Description:
- IC MCU 32BIT 768KB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,499
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Product details
Overview
R5F5631ACDFB#V0 from Renesas is a 100 MHz 32-bit RX631 Group microcontroller with integrated FPU, 768 KB on-chip flash memory, 128 KB SRAM, and 32 KB data flash. It features a 12-bit A/D converter (21 channels), 10-bit D/A converter (2 channels), real-time clock, USB 2.0 function controller, CAN interface, and multiple serial interfaces including SCI, I²C, and SPI - designed for industrial control and embedded HMI applications.
For engineers reviewing the R5F5631ACDFB#V0 datasheet, R5F5631ACDFB#V0 pinout, R5F5631ACDFB#V0 application, or R5F5631ACDFB#V0 equivalent, this MCU delivers deterministic real-time performance, IEEE-754 floating-point support, IEC60730 safety functions, and low-power operation across -40°C to +85°C - critical for motor control, building automation, and programmable logic controllers.
Technical Context
The R5F5631ACDFB#V0 implements the 32-bit RX CPU core with 5-stage CISC Harvard pipeline, supporting 165 DMIPS at 100 MHz and single-cycle 32×32-bit multiplication. It integrates a memory protection unit (MPU), JTAG/FINE debug interfaces, and four low-power modes - sleep, all-module clock stop, software standby, and deep software standby - enabling robust power management in battery-backed or energy-constrained systems.
This device belongs to the RX631 Group (non-Ethernet variant) and excludes the Ethernet MAC, EDMAC, and SDRAM controller found in RX63N parts. It supports up to 134 general-purpose I/O pins (111 on its 144-pin LQFP package), 5-V tolerant inputs, open-drain outputs, and hardware CRC calculation - optimized for deterministic peripheral control without network stack overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit CISC Harvard architecture, 100 MHz max, 165 DMIPS - enables high-throughput deterministic control loops. |
| Flash Memory | 768 KB on-chip main flash, zero-wait-state operation at 100 MHz - supports fast code execution and firmware updates in situ. |
| SRAM | 128 KB on-chip SRAM, no wait states - sufficient for real-time task stacks, buffers, and control algorithms. |
| A/D Converter | 21-channel 12-bit SAR ADC with 1.0 µs conversion time (PCLK = 50 MHz), sample-and-hold, and trigger sources - suitable for precision analog sensing. |
| D/A Converter | 2-channel 10-bit DAC with 0 V to VREFH output range - provides analog actuator control or calibration reference signals. |
| USB Interface | Full-speed USB 2.0 function controller (12 Mbps), integrated transceiver and 2 KB buffer - enables plug-and-play device connectivity without external PHY. |
| CAN Interface | ISO 11898-1 compliant CAN module with 32 mailboxes - supports robust fieldbus communication in industrial networks. |
Pinout & Package
Package: PLQP0144KA-A - 144-pin LQFP, 20 × 20 mm, 0.5 mm pitch, RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Core and I/O supply pins (2.7–3.6 V); dedicated AVCC0 and VREFH pins ensure stable analog reference for ADC/DAC. |
| XTAL / EXTAL | Main crystal oscillator input/output | Supports 4–16 MHz external crystal for precise system timing; internal PLL generates 100 MHz ICLK. |
| RESET | Active-low reset input | Asynchronous reset pin with internal pull-up; accepts external reset signal or power-on reset assertion. |
| USB_DP / USB_DM | USB differential data lines | Integrated full-speed USB transceiver interface - no external PHY required for device-mode operation. |
| TXDn / RXDn | SCI asynchronous serial I/O | Multiple SCI channels support UART, LIN, smart-card, or clock-synchronous protocols - configurable per channel. |
| AD00–AD20 | Analog input channels | 21 dedicated 12-bit ADC input pins with shared sample-and-hold - enables simultaneous sampling of multi-sensor systems. |
| DA0 / DA1 | Digital-to-analog outputs | Two buffered 10-bit DAC outputs - drive analog actuators, calibration references, or feedback loops directly. |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE-754 single-precision 32-bit FPU - accelerates math-intensive control algorithms (e.g., PID, filtering, sensor fusion) without software emulation. |
| IEC60730 safety support | Oscillation-stop detection, CRC calculator, IWDT, self-diagnostic A/D test - simplifies Class B compliance for household and industrial appliances. |
| Low-power operation | 500 µA/MHz active current; four low-power modes including deep software standby with RTC backup - extends battery life in portable or remote nodes. |
| Hardware encryption | DEU with AES-128/192/256 ECB/CBC modes - secures firmware updates and communication payloads in connected devices. |
| Flexible timer system | MTU2 (6-channel), TPU (12-channel), CMT (4-channel), and PPG - enables complex PWM generation, encoder counting, and precise event triggering. |
Applications
| Industrial Motor Control | Building Automation Controller |
|---|---|
Use Scenario: Closed-loop control of BLDC/PMSM motors using sensor feedback and space-vector modulation. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM waveform generation via MTU2/TPU, and ADC sampling synchronized to switching cycles. Use Value: 100 MHz CPU + FPU ensures sub-microsecond loop timing; 12-bit ADC resolution captures torque ripple; 2 DACs provide analog feedback references. |
Use Scenario: Central HVAC or lighting controller managing temperature, occupancy, and energy metering across distributed zones. IC Role / Device Role / Timing Role: Multi-protocol gateway handling CAN for field devices, USB for configuration, and SCI/I²C for sensors and displays. Use Value: Integrated CAN + USB eliminates external bridge ICs; 128 KB SRAM hosts multiple protocol stacks; RTC enables scheduled operations. |
| Programmable Logic Controller (PLC) | Smart Appliance HMI |
Use Scenario: Compact PLC module performing discrete I/O scanning, ladder logic execution, and safety monitoring. IC Role / Device Role / Timing Role: Deterministic I/O handling via GPIO with 5-V tolerance, interrupt-driven event capture, and CRC-protected program storage. Use Value: MPU enforces memory isolation between runtime and user code; IEC60730 diagnostics meet appliance safety standards; 768 KB flash stores firmware + configuration. |
Use Scenario: Touch-enabled kitchen appliance UI with local processing, sensor integration, and secure OTA update capability. IC Role / Device Role / Timing Role: Host for capacitive touch controller, temperature sensor interface, and encrypted firmware update handler via USB. Use Value: DEU enables AES decryption of signed firmware images; 10-bit DAC drives audio alerts; 21 ADC channels monitor multiple thermal zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F5631BCDFB#V0 | Same package and pinout; 1 MB flash (vs. 768 KB), same 128 KB SRAM and peripherals. | Higher firmware capacity for feature-rich applications requiring larger RTOS or protocol stacks. | Select when additional flash headroom is needed for future firmware expansion or dual-bank updates. |
| R5F5630ACDFB#V0 | Same RX631 family, 144-pin LQFP, but 512 KB flash, 64 KB SRAM, and reduced peripheral count (e.g., fewer SCI channels). | Suitable for cost-sensitive, lower-complexity control tasks with minimal I/O or communication requirements. | Choose for simpler designs where 768 KB flash and 128 KB SRAM are unnecessary - reduces BOM cost without sacrificing core architecture. |
Compared with R5F5631ACDFB#V0, R5F5631BCDFB#V0 offers more flash for complex firmware while maintaining identical timing and peripheral compatibility; R5F5630ACDFB#V0 trades memory and peripheral depth for lower cost in less demanding applications - enabling scalable design across product tiers.
Availability
R5F5631ACDFB#V0 is available at Aetrix Electronics and suitable for industrial motor control, building automation, and smart appliance HMI applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for R5F5631ACDFB#V0 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 automotive, industrial, and IoT markets.
The RX631 Group is engineered for high-performance, safety-certifiable embedded control - delivering real-time determinism, integrated security, and low-power operation in industrial and consumer equipment.
FAQ
What is the maximum operating frequency and core architecture of the R5F5631ACDFB#V0?
The R5F5631ACDFB#V0 operates at a maximum frequency of 100 MHz and uses the 32-bit RX CPU core with a 5-stage CISC Harvard pipeline. It achieves 165 DMIPS performance and includes a single-precision IEEE-754 floating-point unit, 32×32-bit multiplier, and memory protection unit - all confirmed in the official Renesas R01DS0098EJ0180 datasheet for the RX631 Group. This architecture enables deterministic real-time execution in R5F5631ACDFB#V0-based systems.
Does the R5F5631ACDFB#V0 include an Ethernet MAC or SDRAM controller?
No, the R5F5631ACDFB#V0 does not include an Ethernet MAC or SDRAM controller. It belongs to the RX631 Group, which explicitly excludes these features - unlike the RX63N Group. Table 1.2 of the R01DS0098EJ0180 datasheet confirms Ethernet and SDRAM functionality is absent in all RX631 variants, including R5F5631ACDFB#V0. Its external bus supports only 16-bit parallel interfaces with eight CS areas, not SDRAM addressing.
What are the flash and RAM capacities of the R5F5631ACDFB#V0?
The R5F5631ACDFB#V0 integrates 768 KB of on-chip main flash memory and 128 KB of on-chip SRAM, both operating at zero wait states up to 100 MHz. It also includes 32 KB of reprogrammable data flash rated for 100,000 erase/write cycles. These values are specified in Table 1.3 of the R01DS0098EJ0180 datasheet under the RX631 Group product list for part number R5F5631ACDFB#V0 in the PLQP0144KA-A package.
Which communication interfaces are supported by the R5F5631ACDFB#V0?
The R5F5631ACDFB#V0 supports USB 2.0 full-speed function mode (12 Mbps), CAN (ISO 11898-1, 32 mailboxes), up to 13 SCI channels (with UART/LIN/smart-card modes), 4 I²C interfaces (including FM+), 3 SPI channels, and IEBus. It does not support Ethernet, OTG host, or USB host functions. These interfaces are verified in Sections 1.1 and Table 1.2 of the R01DS0098EJ0180 datasheet for the RX631 Group, specifically matching R5F5631ACDFB#V0's 144-pin LQFP configuration.
Is the R5F5631ACDFB#V0 qualified for industrial temperature range and safety standards?
Yes, the R5F5631ACDFB#V0 is rated for the industrial temperature range of -40°C to +85°C (D version) and includes hardware features supporting IEC60730 Class B compliance - such as oscillation-stop detection, CRC calculator, independent watchdog timer (IWDT), and self-diagnostic A/D test functions. These capabilities are documented in the "Useful functions for IEC60730 compliance" section of the R01DS0098EJ0180 datasheet and apply to all RX631 Group devices including R5F5631ACDFB#V0.
R5F5631ACDFB#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 144-LQFP
- Series:
- RX600
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- 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:
- 111
- 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:
R5F5631ACDFB#V0 FAQ
1.How can I place an order for R5F5631ACDFB#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F5631ACDFB#V0 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 R5F5631ACDFB#V0 reliable?
The price and inventory of R5F5631ACDFB#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F5631ACDFB#V0 is usually 5 days.
3.What payment methods are accepted for R5F5631ACDFB#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F5631ACDFB#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F5631ACDFB#V0?
R5F5631ACDFB#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F5631ACDFB#V0 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 R5F5631ACDFB#V0?
For technical support, including R5F5631ACDFB#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F5631ACDFB#V0 requirements.
6.How does Aetrix verify that R5F5631ACDFB#V0 is sourced from the original manufacturer or authorized distributors?
All R5F5631ACDFB#V0 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 R5F5631ACDFB#V0 meets industry standards.
7.What is the process for return or replacement of R5F5631ACDFB#V0?
All R5F5631ACDFB#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F5631ACDFB#V0, 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 R5F5631ACDFB#V0 part is unused and in its original packaging.
Return procedure for R5F5631ACDFB#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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