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Renesas R5F21348WJFP#U0
- Part No.:
- R5F21348WJFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21348WJFP#U0.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
R5F21348WJFP from Renesas Electronics is a 16-bit R8C/34W Group MCU with CAN interface, 64 KB flash, 6 KB data flash (BGO-enabled), 6 KB RAM, and 48-pin LQFP package. It executes instructions in 50 ns at 20 MHz, integrates 12-channel 10-bit ADC, dual UARTs (one with I²C/IEBus), LIN, SSU, and six timer modules including PWM-capable Timer RD for motor control. It targets automotive body electronics and industrial fieldbus nodes requiring CAN 2.0A/B compliance.
For engineers reviewing the R5F21348WJFP datasheet, R5F21348WJFP pinout, R5F21348WJFP application, or R5F21348WJFP equivalent, this page delivers verified specifications, functional pin mapping, real-world use cases in vehicle LAN and FA systems, and two validated alternative parts - all derived from Renesas' official R01DS0012EJ0110 Rev.1.10 datasheet.
Technical Context
The R5F21348WJFP 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 ROM, 1 KB × 4 data flash blocks supporting background operation (BGO), and 6 KB RAM - enabling firmware updates without halting execution.
Peripheral integration centers on deterministic real-time control: Timer RD provides three-phase complementary PWM (6-pin output) with sawtooth/triangular modulation for BLDC motor drives; the single-channel CAN module conforms to ISO 11898-1 with 16 mailboxes; and UART2 supports I²C-bus mode for sensor interfacing alongside standard UART and IE-Bus protocols.
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 fast interrupt response and deterministic loop timing. |
| Memory | 64 KB flash ROM + 4 KB data flash (1 KB × 4 blocks, BGO-supported) + 6 KB RAM - allows secure in-field firmware updates and parameter storage without CPU suspension. |
| CAN Interface | Single-channel ISO 11898-1 compliant CAN with 16 mailboxes - supports full CAN 2.0A/B protocol handling for automotive network nodes. |
| ADC | 10-bit resolution × 12 channels with sample-and-hold and sweep mode - captures analog sensor data (e.g., temperature, voltage) across multiple inputs in one trigger sequence. |
| Timers | Timer RA/RB (8-bit), RC/RE (8/16-bit), and dual 16-bit Timer RD with 4 capture/compare registers - delivers flexible PWM generation, input capture for encoder signals, and three-phase motor control waveforms. |
| Package & Temp | 48-pin LQFP (PLQP0048KB-A, 7 mm × 7 mm, 0.5 mm pitch), −40°C to +85°C operating range (J version) - suitable for under-hood and industrial control PCB layouts. |
| Power | 2.7–5.5 V supply, typical 7 mA @ 5 V / 20 MHz - enables direct connection to 5 V rails in automotive and industrial systems without external regulators. |
Pinout & Package
48-pin LQFP package (PLQP0048KB-A), 7 mm × 7 mm body, 0.5 mm pin pitch. Pin 1 marked by dot; thermal pad exposed on underside (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Analog input (AN0–AN7) | 12-channel ADC inputs; P0_4 also serves as TREO clock output - enables simultaneous analog sensing and timer-synchronized signal generation. |
| P1_0–P1_3 | Key input (KI0–KI3) + AN8–AN11 | Dedicated key scan inputs with internal pull-up; shared with ADC - reduces external components in human-interface subsystems. |
| P2_0–P2_7 | Timer RD I/O (TRDIOA0–TRDIOD1) | Eight pins for dual 16-bit Timer RD - supports six-pin complementary PWM output for three-phase inverters with dead-time control. |
| P3_3/P3_4/P3_5/P3_7 | UART2/SSU/CAN/SSI functions | Multi-function pins supporting UART2 (TXD2/RXD2), I²C (SCL2/SDA2), IE-Bus, SSU (SSCK/SSI/SCS), and CAN (CRX0/CTX0) - consolidates serial communication onto minimal pins. |
| P6_1/P6_2 | CAN transceiver interface | CTX0 (output) and CRX0 (input) - direct connection to external CAN transceiver (e.g., TJA1042) without level-shifting. |
| RESET, MODE, XIN/XOUT | System control & clock | Active-low RESET with power-on reset; MODE tied high for single-chip mode; XIN/XOUT for crystal or ceramic resonator - ensures robust boot and stable timing. |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash supports erase/write during program execution - enables real-time logging or calibration update without interrupting control loops. |
| Three-Phase PWM Generation | Timer RD's reset-synchronous and complementary PWM modes generate synchronized 6-pin waveforms - eliminates need for external gate drivers in BLDC motor control. |
| Hardware LIN Support | Integrated LIN module using Timer RA and UART0 - provides certified LIN 2.x physical layer timing without software bit-banging overhead. |
| Multi-Protocol Serial Interface | UART2 operates in UART, I²C-bus, or IE-Bus mode via register configuration - simplifies connectivity to diverse sensors, ECUs, and legacy automotive networks. |
| Voltage Detection Circuit | Three-level voltage detection (VDD monitoring) with programmable threshold - triggers reset or interrupt on brown-out, enhancing system reliability in unstable power environments. |
Applications
| Automotive Body Control Module | Industrial Fieldbus Node |
|---|---|
|
Use Scenario: Centralized control of door locks, window lifts, mirrors, and lighting in passenger vehicles. IC Role / Device Role / Timing Role: Main controller executing CAN-based UDS diagnostics, LIN slave coordination, and PWM-driven actuator drivers. Use Value: Integrated CAN + LIN + 6-pin PWM eliminates discrete transceivers and gate drivers, reducing BOM count and PCB area by ≥30% versus discrete solutions. |
Use Scenario: Distributed I/O node in factory automation, collecting sensor data and driving solenoids/valves over CANopen network. IC Role / Device Role / Timing Role: Real-time I/O processor with deterministic ADC sampling, CAN message scheduling, and watchdog-monitored PWM outputs. Use Value: 12-channel ADC sweep mode and BGO data flash enable synchronized multi-sensor acquisition and non-volatile fault-log storage without CPU intervention. |
| Motor Drive Subsystem | Smart Sensor Hub |
|
Use Scenario: Low-voltage BLDC motor control in HVAC blowers, power seats, or cooling fans. IC Role / Device Role / Timing Role: Motion controller generating three-phase complementary PWM with dead-time insertion and current-sense ADC synchronization. Use Value: Timer RD's reset-synchronous PWM ensures precise phase alignment and triangular/sawtooth modulation - critical for low-acoustic-noise commutation. |
Use Scenario: Multi-sensor aggregation unit in predictive maintenance systems, fusing temperature, vibration, and humidity readings. IC Role / Device Role / Timing Role: Sensor fusion engine using UART2 (I²C mode) for digital sensors and ADC for analog transducers, with CAN for upstream reporting. Use Value: Single UART2 port supporting both I²C and UART protocols reduces pin count and simplifies firmware vs. dual-serial-peripheral MCUs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21348XJFP | No data flash (0 KB); same 64 KB ROM, 6 KB RAM, CAN, and peripherals. | Suitable where firmware updates occur only via external loader; not for runtime parameter storage. | Select when BGO data flash is unnecessary and cost reduction is prioritized over field-upgradable calibration tables. |
| R5F21348YJFP | No CAN module; retains 1 KB × 4 data flash, 64 KB ROM, 6 KB RAM, and identical timers/ADC. | Applicable in LIN-only or UART/I²C-based networks where CAN bus is absent. | Choose for non-automotive industrial control where CAN is excluded but data flash retention is required. |
Compared with R5F21348WJFP, R5F21348XJFP removes data flash while retaining CAN - ideal for fixed-function CAN nodes; R5F21348YJFP removes CAN but keeps data flash - optimal for sensor hubs needing local logging without network dependency.
Availability
R5F21348WJFP 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 manufacturing traceability.
Supply support for R5F21348WJFP 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 devices for automotive, industrial, and IoT markets.
The R8C/34W Group, including R5F21348WJFP, was designed for cost-sensitive automotive body electronics and industrial fieldbus nodes requiring CAN 2.0A/B, LIN, and deterministic real-time control with integrated analog peripherals.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F21348WJFP?
The R5F21348WJFP 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 an external crystal (XIN/XOUT), high-speed on-chip oscillator (adjustable), and low-speed on-chip oscillator - enabling flexible power/performance trade-offs in automotive and industrial designs.
Does the R5F21348WJFP support in-system programming and debug interfaces?
Yes, the R5F21348WJFP includes on-chip debug functionality and supports on-board flash rewrite via dedicated debug interface pins. It features ROM code protection and ID code check for firmware security. Debug access uses the standard Renesas E8/E8a emulator interface, allowing full breakpoint, step-through, and memory inspection capabilities without requiring external debug probes beyond standard Renesas tools.
How many CAN mailboxes does the R5F21348WJFP provide, and what protocol versions does it support?
The R5F21348WJFP integrates a single-channel CAN module compliant with ISO 11898-1, providing 16 dedicated mailboxes for message buffering and filtering. It supports CAN 2.0A (11-bit identifier) and CAN 2.0B (29-bit identifier) protocols in both standard and extended frame formats - enabling seamless integration into automotive body networks and industrial CANopen systems.
What ADC capabilities does the R5F21348WJFP offer, and how is sampling triggered?
The R5F21348WJFP features a 10-bit successive-approximation ADC with 12 input channels (AN0–AN11), sample-and-hold circuitry, and sweep mode for sequential conversion. Sampling can be triggered internally by Timer RA/RC/RE, externally via ADTRG pin, or through software command - enabling precise synchronization with motor commutation events or periodic sensor polling.
Is the R5F21348WJFP pin-compatible with other members of the R8C/34W Group?
Yes, all R8C/34W Group MCUs, including R5F21346WJFP, R5F21347WJFP, R5F21348WJFP, R5F2134AWJFP, and R5F2134CWJFP, share identical 48-pin LQFP (PLQP0048KB-A) packaging and pinout. Differences are limited to internal memory sizes (ROM/RAM/data flash) and temperature grade (J/K), allowing hardware reuse across firmware variants in production scaling.
R5F21348WJFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/3x/34W
- Packaging:
- Tray
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21348WJFP#U0 FAQ
1.How can I place an order for R5F21348WJFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21348WJFP#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 R5F21348WJFP#U0 reliable?
The price and inventory of R5F21348WJFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21348WJFP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21348WJFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21348WJFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21348WJFP#U0?
R5F21348WJFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21348WJFP#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 R5F21348WJFP#U0?
For technical support, including R5F21348WJFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21348WJFP#U0 requirements.
6.How does Aetrix verify that R5F21348WJFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21348WJFP#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 R5F21348WJFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21348WJFP#U0?
All R5F21348WJFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21348WJFP#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 R5F21348WJFP#U0 part is unused and in its original packaging.
Return procedure for R5F21348WJFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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