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Renesas R5F21348EJFP#U0
- Part No.:
- R5F21348EJFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21348EJFP#U0.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:135
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Product details
Overview
R5F21348EJFP#U0 from Renesas is a 16-bit R8C/34W Group microcontroller with CAN interface, 64 KB flash ROM, 6 KB data flash (4 × 1 KB blocks with BGO), and 6 KB RAM in 48-pin LQFP (PLQP0048KB-A). It executes instructions in 50 ns at 20 MHz, integrates 12-channel 10-bit ADC, dual UARTs (one with I²C/IEBus), LIN, SSU, and advanced PWM-capable timers RD/RC for motor control. Used in automotive body electronics and industrial fieldbus nodes.
For engineers reviewing the R5F21348EJFP#U0 datasheet, R5F21348EJFP#U0 pinout, R5F21348EJFP#U0 application, or R5F21348EJFP#U0 equivalent, key selection criteria include ISO 11898-1 CAN compliance, background operation (BGO) support for data flash, −40 to +85°C J-version temperature rating, and 48-pin LQFP package compatibility with existing R8C/3x layouts.
Technical Context
The R5F21348EJFP#U0 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit hardware multiplier, and multiply-accumulate capability. Its memory architecture includes 64 KB program flash, 6 KB RAM, and 4 KB data flash organized in four 1 KB blocks supporting background operation during program execution.
Peripheral integration centers on real-time control: Timer RD provides reset-synchronous and complementary PWM for three-phase motor drive (6-pin output), while CAN module supports 16 mailboxes and LIN is implemented via UART0 and Timer RA. Clock system includes XIN oscillator, high-speed and low-speed on-chip oscillators with selectable dividers and oscillation stop detection.
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 |
| Memory | 64 KB flash ROM + 6 KB RAM + 4 KB data flash (4 × 1 KB blocks, BGO enabled) |
| CAN Interface | 1 channel, 16 mailboxes, ISO 11898-1 compliant - enables vehicle LAN and FA network node implementation |
| ADC | 10-bit resolution × 12 channels with sample-and-hold and sweep mode - supports multi-sensor analog acquisition |
| Timers | Timer RD (16-bit × 2) with reset-synchronous/complementary PWM (6-pin three-phase output); Timer RC (16-bit) with 4 capture/compare registers |
| Package & Temp | 48-pin LQFP (PLQP0048KB-A, 7 mm × 7 mm, 0.5 mm pitch); −40 to +85°C operating range (J version) |
| Serial Interfaces | UART0 (clock sync/UART), UART2 (clock sync/UART/I²C/IEBus/multiprocessor), SSU (1 ch), hardware LIN (via UART0 + Timer RA) |
Pinout & Package
48-pin LQFP package (PLQP0048KB-A), 7 mm × 7 mm body, 0.5 mm pin pitch. Pin functions support multiplexed peripheral assignment via software configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Analog input (AN0–AN7) | 12-channel ADC inputs; P0_4 also serves as TREO (divided clock output) |
| P1_0–P1_3 | Key interrupt inputs (KI0–KI3) | Dedicated debounced key scan inputs for human interface subsystems |
| P2_0–P2_7 | Timer RD I/O (TRDIOA0–TRDIOD1) | 8-pin group supporting 6-pin three-phase PWM output with complementary/sawtooth/triangular modulation |
| P3_7 | Serial output (SSO) / UART2 I/O | Multiplexed serial data I/O supporting UART, I²C, and IEBus protocols |
| P4_2 | VREF input | Analog reference voltage input for ADC - requires external decoupling capacitor |
| P6_1 / P6_2 | CAN TX (CTX0) / CAN RX (CRX0) | Dedicated differential CAN physical layer interface pins - only present in W/X groups |
| RESET | Active-low reset input | Hardware reset assertion; internal power-on reset circuit active |
| XIN / XOUT | Crystal oscillator input/output | Supports ceramic resonator or crystal up to 20 MHz; includes oscillation stop detection |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash supports read-while-write - enables firmware updates without halting real-time control tasks |
| Three-Phase Motor PWM | Timer RD generates synchronized complementary waveforms on 6 pins with dead-time insertion - eliminates need for external gate drivers |
| Integrated LIN Physical Layer | Hardware LIN implemented using UART0 and Timer RA - reduces BOM count and timing jitter vs. software-based LIN |
| Multi-Protocol Serial Interface | UART2 supports UART, I²C-bus, and IE-Bus modes - simplifies communication with sensors, displays, and legacy automotive modules |
| Low-Power Operating Modes | Wait and stop modes reduce current to µA-level - extends battery life in always-on automotive modules |
Applications
| Automotive Body Control Module | Industrial Fieldbus Node |
|---|---|
Use Scenario: Centralized control of door locks, windows, mirrors, and lighting in passenger vehicles. IC Role / Device Role / Timing Role: Main MCU executing CAN message handling, PWM motor drive, and ADC-based sensor monitoring. Use Value: Integrated CAN + LIN + 6-pin PWM eliminates external transceivers and gate drivers, reducing PCB area by ≥35%. |
Use Scenario: Distributed I/O node in factory automation networks communicating over CANopen or DeviceNet. IC Role / Device Role / Timing Role: Protocol-aware edge controller managing analog sensor inputs, digital actuator outputs, and real-time CAN messaging. Use Value: 12-channel ADC with sweep mode and CAN mailbox filtering enable deterministic response under 100 µs latency. |
| Motor Drive Subsystem | Smart Sensor Hub |
Use Scenario: Brushless DC motor control in HVAC blowers or seat adjusters. IC Role / Device Role / Timing Role: Real-time PWM generator with encoder feedback capture and fault protection logic. Use Value: Timer RD's reset-synchronous PWM ensures precise phase alignment across all 3 phases - critical for torque ripple reduction. |
Use Scenario: Multi-sensor aggregation unit for tire pressure, cabin air quality, and ambient light in telematics systems. IC Role / Device Role / Timing Role: Low-power sensor fusion processor with background ADC scanning and CAN event reporting. Use Value: Data flash BGO allows over-the-air calibration updates while maintaining continuous sensor logging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21348WKFP#U0 | K-version rated for −40 to +125°C; identical peripherals and memory map | Required for under-hood automotive applications exceeding 85°C ambient | Select when extended temperature operation is mandatory; otherwise R5F21348EJFP#U0 suffices for cabin/body modules |
| R5F21348YJFP#U0 | Same 64 KB ROM/6 KB RAM but no CAN module; retains 4 KB data flash with BGO | Suitable for non-networked embedded control where LIN or UART-only communication suffices | Choose when CAN is unnecessary - reduces EMI design complexity and eliminates CAN transceiver BOM cost |
Compared with R5F21348WKFP#U0, the R5F21348EJFP#U0 offers identical functionality at lower thermal rating and cost; versus R5F21348YJFP#U0, it adds CAN capability at no RAM/flash trade-off - making it optimal for cost-sensitive, CAN-requiring automotive body nodes.
Availability
R5F21348EJFP#U0 is available at Aetrix Electronics and suitable for automotive body electronics, industrial fieldbus nodes, and motor drive subsystems requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned reliability.
Supply support for R5F21348EJFP#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, and power solutions for automotive, industrial, and IoT markets.
The R8C/34W Group, including R5F21348EJFP#U0, was designed for cost-optimized, real-time automotive body control and industrial networked devices requiring CAN, LIN, and precision PWM - balancing performance, integration, and qualification readiness.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F21348EJFP#U0?
The R5F21348EJFP#U0 operates at up to 20 MHz (XIN clock) with a supply voltage range of 2.7 V to 5.5 V. Minimum instruction execution time is 50 ns under these conditions. The device includes voltage detection circuits for power-on reset and configurable voltage monitoring, ensuring reliable startup and brown-out protection across its full VCC range.
Does the R5F21348EJFP#U0 support background operation for data flash writes?
Yes, the R5F21348EJFP#U0 supports Background Operation (BGO) for its 4 KB data flash (organized in four 1 KB blocks). This allows the CPU to execute code from program flash while simultaneously erasing or programming data flash - essential for seamless firmware updates and runtime parameter storage without interrupting real-time control loops.
Which timer peripherals in the R5F21348EJFP#U0 support three-phase motor control?
Timer RD (dual 16-bit units) in the R5F21348EJFP#U0 directly supports three-phase motor control via reset-synchronous PWM and complementary PWM modes, generating six synchronized outputs with programmable dead time. Timer RC provides additional capture/compare capability for encoder feedback or hall sensor input synchronization.
Is the R5F21348EJFP#U0 pin-compatible with other R8C/34x family members?
Yes, the R5F21348EJFP#U0 shares the same 48-pin LQFP (PLQP0048KB-A) package and pin assignment with all R8C/34W/X/Y/Z Group variants. Peripheral pin functions are software-configurable, enabling layout reuse across memory and feature variants - though CAN-related pins (CTX0/CRX0) are inactive in Y/Z versions.
What communication protocols does the R5F21348EJFP#U0 support natively?
The R5F21348EJFP#U0 natively supports CAN 2.0B (ISO 11898-1), LIN 2.x (hardware-implemented via UART0 and Timer RA), UART, clock-synchronous serial I/O, I²C-bus (via UART2), and IE-Bus (via UART2). No external protocol accelerators or transceivers are required for basic operation of these interfaces.
R5F21348EJFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/3x/34E
- Packaging:
- Bulk
- Product Status:
- Active
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21348EJFP#U0 FAQ
1.How can I place an order for R5F21348EJFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21348EJFP#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 R5F21348EJFP#U0 reliable?
The price and inventory of R5F21348EJFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21348EJFP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21348EJFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21348EJFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21348EJFP#U0?
R5F21348EJFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21348EJFP#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 R5F21348EJFP#U0?
For technical support, including R5F21348EJFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21348EJFP#U0 requirements.
6.How does Aetrix verify that R5F21348EJFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21348EJFP#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 R5F21348EJFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21348EJFP#U0?
All R5F21348EJFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21348EJFP#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 R5F21348EJFP#U0 part is unused and in its original packaging.
Return procedure for R5F21348EJFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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