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Renesas R5F21348WKFP#W4
- Part No.:
- R5F21348WKFP#W4
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21348WKFP#W4.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,834
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Product details
Overview
R5F21348WKFP#W4 from Renesas is a 16-bit R8C CPU core MCU with 64 KB program flash, 6 KB data flash (BGO-enabled), 6 KB RAM, CAN 2.0B module (16 mailboxes, ISO 11898-1 compliant), and 12-channel 10-bit A/D converter - designed for automotive LAN and industrial FA control systems operating from −40°C to +125°C.
For engineers reviewing the R5F21348WKFP#W4 datasheet, R5F21348WKFP#W4 pinout, R5F21348WKFP#W4 application, or R5F21348WKFP#W4 equivalent, this page delivers verified specifications, validated pin functions, confirmed CAN/LIN timing roles, and real-world automotive/industrial use context - all derived from Renesas R01DS0012EJ0110 Rev.1.10.
Technical Context
The R5F21348WKFP#W4 implements the R8C CPU core with 89 fundamental instructions, 50 ns minimum instruction cycle at 20 MHz, and integrated 16×16→32-bit multiplier with MAC support. Its clock system includes XIN oscillator (crystal/resonator), high-speed on-chip oscillator (frequency-adjustable), and low-speed on-chip oscillator - enabling flexible power mode selection including wait and stop modes.
Peripheral integration centers on deterministic real-time control: Timer RD provides dual 16-bit PWM units with three-phase complementary output (6-pin), reset-synchronous PWM, and triangular/sawtooth modulation; CAN module supports mailbox-based message handling with dedicated TX/RX pins (CTX0/CRX0); LIN is hardware-implemented using UART0 and Timer RA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 50 ns min. instruction time at 20 MHz - enables deterministic real-time response in motor control loops. |
| Memory | 64 KB program flash + 1 KB × 4 data flash (BGO enabled) + 6 KB RAM - supports field firmware updates without halting application execution. |
| CAN Interface | 1-channel ISO 11898-1 compliant CAN 2.0B with 16 mailboxes - handles priority-based arbitration and error confinement in automotive networks. |
| A/D Converter | 10-bit resolution × 12 channels with sample-and-hold and sweep mode - captures synchronized analog sensor data across engine/temperature/pressure inputs. |
| Operating Range | −40°C to +125°C (K version), VCC = 2.7–5.5 V - qualified for under-hood automotive and industrial motor drive environments. |
| Timers | Timer RD ×2 (16-bit, 4 capture/compare registers each) with complementary PWM, reset-sync, and 3-phase waveform generation - drives gate drivers for BLDC/PMSM inverters. |
| Serial Interfaces | UART0 + UART2 (I²C/IEBus/multiprocessor modes) + SSU + hardware LIN - enables multi-protocol communication with ECUs, sensors, and actuators. |
Pinout & Package
Package: 48-pin LQFP (PLQP0048KB-A), 7 mm × 7 mm, 0.5 mm pitch - RoHS-compliant surface-mount package suitable for automated assembly in automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P6_1 / CTX0 | CAN Transmit Output | Dedicated CAN bus driver output; requires external termination and ESD protection per ISO 11898-2. |
| P6_2 / CRX0 | CAN Receive Input | Dedicated CAN bus receiver input; high-impedance differential input compatible with common-mode noise rejection. |
| P1_4 / TXD0 | UART0 Transmit | Asynchronous serial output for debug console or LIN master communication (with Timer RA). |
| P1_5 / RXD0 | UART0 Receive | Asynchronous serial input supporting LIN slave response and host command parsing. |
| P4_5 / ADTRG | A/D External Trigger | Hardware-synchronized sampling trigger - aligns ADC conversion with PWM edge or timer event for precise current sensing. |
| P2_0 / TRDIOA0 | Timer RD Channel A0 I/O | Configurable as PWM output, input capture, or compare output - used for phase-A high-side gate drive control. |
| RESET | Active-Low Reset Input | Asynchronous reset assertion resets CPU, peripherals, and internal registers - must be held low ≥100 µs after power stabilization. |
| XIN / XOUT | Crystal Oscillator I/O | Supports 1–20 MHz crystal or ceramic resonator; XIN is input, XOUT is buffered output - defines system clock base for CAN timing accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erase/write while executing code from program flash - enables seamless over-the-air firmware patching in deployed vehicles. |
| Complementary PWM Mode | Timer RD generates matched high-/low-side PWM pairs with programmable dead time - prevents shoot-through in 3-phase inverter bridges. |
| Hardware LIN Module | Integrated LIN 2.1/2.2 support via UART0 + Timer RA - eliminates external LIN transceiver for cost-sensitive body control modules. |
| Voltage Detection Circuit | Three-level voltage monitor with selectable detection thresholds - triggers reset or interrupt on brown-out conditions before MCU instability occurs. |
| On-Chip Debug | Fully functional on-chip debug interface with flash rewrite capability - allows in-system programming and real-time variable inspection without external emulator. |
Applications
| Automotive Body Control Unit (BCU) | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirrors, and lighting in passenger vehicles. IC Role / Device Role / Timing Role: Main MCU managing LIN slaves (door modules), CAN gateway to powertrain network, and analog sensor fusion (temperature, position). Use Value: Single-chip integration of CAN, LIN, 12-channel ADC, and BGO-capable data flash reduces BOM count and enables field-upgradable calibration tables. |
Use Scenario: Closed-loop speed/torque control of 3-phase BLDC motors in HVAC blowers or conveyor systems. IC Role / Device Role / Timing Role: Real-time PWM generator (Timer RD), current/voltage sensing interface (ADC with ADTRG), and CAN-based motion command reception. Use Value: Complementary PWM with dead-time insertion and hardware-triggered ADC sampling ensure precise, jitter-free motor commutation at 20 kHz switching frequency. |
| Automotive Power Distribution Module | Factory Automation I/O Hub |
Use Scenario: Smart fuse box managing load switching, short-circuit detection, and energy monitoring across vehicle subsystems. IC Role / Device Role / Timing Role: High-reliability CAN node with voltage detection, watchdog timer, and 64 KB flash for fault logging and diagnostics (UDS/OBD-II). Use Value: −40°C to +125°C operation and 16-mailbox CAN buffer enable robust communication during engine cranking and thermal stress events. |
Use Scenario: Distributed I/O controller collecting digital inputs, analog sensor data, and driving solenoids/relays in PLC-connected machinery. IC Role / Device Role / Timing Role: Deterministic interrupt handling (69 vectors, 7 priority levels) for real-time I/O scanning and CANopen device profile implementation. Use Value: DTC (Data Transfer Controller) offloads CPU during ADC sweeps and CAN mailbox transfers - freeing cycles for PID loop execution and safety monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21348WJFP | J version: −40°C to +85°C ambient rating; identical memory, peripherals, and pinout. | Suitable for cabin-mounted modules (e.g., infotainment, HVAC control) where under-hood temperature extremes are absent. | Select R5F21348WJFP when full automotive under-hood qualification is not required and cost optimization is prioritized. |
| R5F21347WKFP | 48 KB program flash (vs. 64 KB), same 6 KB data flash, identical K-temp grade and peripheral set. | Applicable where firmware footprint fits within 48 KB and future feature expansion headroom is limited. | Choose R5F21347WKFP if current software size is ≤45 KB and no planned feature additions demand extra flash space. |
Compared with R5F21348WKFP#W4, R5F21348WJFP trades extended temperature range for lower cost in non-under-hood roles, while R5F21347WKFP reduces flash capacity without altering thermal or peripheral capabilities - both retain full CAN, LIN, and PWM functionality for drop-in reuse in existing designs.
Availability
R5F21348WKFP#W4 is available at Aetrix Electronics and suitable for automotive body control, industrial motor drives, power distribution modules, and factory automation I/O hubs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F21348WKFP#W4 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 leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/34W Group, including R5F21348WKFP#W4, was engineered for cost-sensitive, high-reliability automotive and industrial control applications requiring integrated CAN, LIN, precision analog, and deterministic real-time performance.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F21348WKFP#W4?
The R5F21348WKFP#W4 operates at up to 20 MHz (f(XIN)) with a supply voltage range of 2.7 V to 5.5 V. Its minimum instruction execution time is 50 ns under these conditions, and it supports multiple clock sources including external crystal, high-speed on-chip oscillator (adjustable), and low-speed on-chip oscillator - enabling dynamic power/performance scaling.
Does the R5F21348WKFP#W4 support background operation (BGO) for data flash writes?
Yes, the R5F21348WKFP#W4 includes background operation (BGO) for its 1 KB × 4 data flash blocks. This allows the CPU to execute application code from program flash while simultaneously erasing or programming data flash - essential for runtime parameter storage and firmware updates without system interruption.
Which pins are dedicated to the CAN interface on the R5F21348WKFP#W4?
The R5F21348WKFP#W4 uses P6_1 (CTX0) as the dedicated CAN transmit output and P6_2 (CRX0) as the dedicated CAN receive input. These pins are exclusively assigned to the CAN module and are not multiplexed with other primary peripherals - ensuring signal integrity and timing compliance with ISO 11898-1.
What is the A/D converter configuration of the R5F21348WKFP#W4?
The R5F21348WKFP#W4 integrates a 10-bit successive-approximation A/D converter with 12 input channels (AN0–AN11), sample-and-hold circuitry, and sweep mode for automatic channel sequencing. Conversion can be triggered by software, timer, or the dedicated ADTRG pin - enabling precise synchronization with PWM events in motor control applications.
How does the R5F21348WKFP#W4 implement hardware LIN communication?
The R5F21348WKFP#W4 implements hardware LIN using UART0 combined with Timer RA for baud rate generation and frame timing. This configuration supports LIN 2.1/2.2 protocols without external transceivers, reducing system cost and board space - ideal for slave nodes in automotive body electronics such as seat controllers or mirror modules.
R5F21348WKFP#W4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/3x/34W
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- CANbus, I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 43
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21348WKFP#W4 FAQ
1.How can I place an order for R5F21348WKFP#W4 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21348WKFP#W4 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 R5F21348WKFP#W4 reliable?
The price and inventory of R5F21348WKFP#W4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21348WKFP#W4 is usually 5 days.
3.What payment methods are accepted for R5F21348WKFP#W4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21348WKFP#W4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21348WKFP#W4?
R5F21348WKFP#W4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21348WKFP#W4 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 R5F21348WKFP#W4?
For technical support, including R5F21348WKFP#W4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21348WKFP#W4 requirements.
6.How does Aetrix verify that R5F21348WKFP#W4 is sourced from the original manufacturer or authorized distributors?
All R5F21348WKFP#W4 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 R5F21348WKFP#W4 meets industry standards.
7.What is the process for return or replacement of R5F21348WKFP#W4?
All R5F21348WKFP#W4 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21348WKFP#W4, 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 R5F21348WKFP#W4 part is unused and in its original packaging.
Return procedure for R5F21348WKFP#W4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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