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Renesas R5F21346WJFP#U0
- Part No.:
- R5F21346WJFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21346WJFP#U0.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,403
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Product details
Overview
R5F21346WJFP from Renesas is a 16-bit R8C CPU core MCU with 32 KB program ROM, 1 KB × 4 data flash (BGO-enabled), 2.5 KB RAM, and integrated CAN 2.0A/B module (16 mailboxes, ISO 11898-1 compliant). It operates at up to 20 MHz (50 ns min instruction time), supports −40 to +85°C ambient, and targets automotive LAN and industrial FA control nodes requiring deterministic real-time I/O, analog sensing, and robust serial communication.
For engineers reviewing the R5F21346WJFP datasheet, R5F21346WJFP pinout, R5F21346WJFP application, or R5F21346WJFP equivalent, key selection criteria include CAN interface integration, background operation data flash for firmware updates, 12-channel 10-bit ADC with sample-and-hold, multi-mode PWM generation (including three-phase), and J-version temperature rating for cost-sensitive automotive body electronics and industrial controllers.
Technical Context
The R5F21346WJFP implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit hardware multiplier, and multiply-accumulate capability - enabling efficient motor control math and signal processing. Its memory architecture separates program ROM (32 KB) from data flash (4 KB total, 1 KB × 4 blocks) with BGO support, allowing concurrent code execution and nonvolatile parameter storage.
Peripheral integration includes dual UARTs (UART0/UART2), SSU, hardware LIN (via timer RA + UART0), and a full-featured CAN controller. Timer RD provides two independent 16-bit units with 4 capture/compare registers each, supporting reset-synchronous and complementary PWM for three-phase inverter drive - critical for embedded motor control applications.
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 high-efficiency C-code execution in resource-constrained systems. |
| Memory | 32 KB flash program ROM + 4 KB data flash (1 KB × 4 blocks, BGO enabled) + 2.5 KB RAM - supports field firmware updates without halting application. |
| CAN Interface | Single-channel CAN 2.0A/B controller with 16 mailboxes, ISO 11898-1 compliance - suitable for automotive body networks and industrial CANopen nodes. |
| ADC | 10-bit resolution × 12 channels with sample-and-hold and sweep mode - captures synchronized analog sensor data for closed-loop control. |
| PWM Capability | Timer RD delivers 6-pin PWM output with reset-synchronous and complementary modes - directly drives 3-phase gate drivers in BLDC/PMSM inverters. |
| Operating Range | −40°C to +85°C (J version), VCC = 2.7–5.5 V - qualified for under-hood automotive and industrial environments without extended temp grading. |
| Power Consumption | Typ. 7 mA at 5.0 V / 20 MHz - balances performance and low-power operation in always-on vehicle modules. |
Pinout & Package
Package: 48-pin LQFP (PLQP0048KB-A), 7 mm × 7 mm, 0.5 mm pitch - compatible with standard surface-mount assembly and automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P6_1 / CTX0 | CAN Transmit Output | Differential CAN bus driver output (dominant/recessive signaling); requires external CAN transceiver (e.g., SN65HVD230). |
| P6_2 / CRX0 | CAN Receive Input | Differential CAN bus receiver input; connects to transceiver RX pin for message reception and error detection. |
| P0_0–P0_7, P1_0–P1_7, etc. | CMOS I/O Ports | 43 programmable CMOS ports with selectable pull-up resistors - configurable as GPIO, peripheral function pins, or analog inputs (AN0–AN11). |
| P4_5 / ADTRG | ADC External Trigger | Hardware trigger input to start A/D conversion synchronously with timer or external event - ensures precise timing in motor control sampling. |
| P2_0–P2_7 / TRDIOx | Timer RD I/O Pins | Eight dedicated pins for Timer RD PWM outputs and capture inputs - supports 6-pin complementary PWM for three-phase inverter gate drive. |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erase/write occurs concurrently with CPU program execution - enables seamless firmware patching and runtime parameter logging. |
| Three-Phase PWM Engine | Timer RD's reset-synchronous and complementary PWM modes generate synchronized 6-pin outputs with dead-time insertion - eliminates need for external logic in motor drive designs. |
| Integrated LIN Physical Layer Support | Hardware LIN implemented via UART0 + timer RA - reduces BOM count and software overhead for LIN slave nodes in automotive body control modules. |
| 12-Channel 10-bit ADC with Sweep Mode | Simultaneous sampling of up to 12 analog inputs in sequence with single trigger - ideal for multi-sensor monitoring in battery management or HVAC control. |
| Voltage Detection Circuit | Configurable voltage detection level (VDD monitor) with power-on reset and interrupt capability - ensures safe brown-out recovery in automotive power supply fluctuations. |
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 executing CAN message handling, PWM-driven actuator control, and LIN-slave communication with sensors/switches. Use Value: Integrated CAN + LIN + 6-pin PWM eliminates external protocol translators and gate driver logic, reducing board area and system cost. |
Use Scenario: Closed-loop speed/torque control of BLDC motors in HVAC blowers or conveyor systems. IC Role / Device Role / Timing Role: Real-time motor commutation engine using Timer RD's complementary PWM and ADC-triggered current sensing. Use Value: Hardware-accelerated three-phase PWM with dead-time control ensures precise gate timing and prevents shoot-through faults. |
| Automotive Climate Control Panel | Factory Automation I/O Module |
Use Scenario: Human-machine interface and environmental sensor aggregation in vehicle HVAC systems. IC Role / Device Role / Timing Role: Sensor hub collecting cabin temperature, humidity, and sunlight data via 12-channel ADC, then transmitting over CAN. Use Value: On-chip data flash stores calibration coefficients and user preferences; BGO allows updates during runtime without disrupting climate regulation. |
Use Scenario: Distributed digital I/O node connecting PLCs to solenoids, relays, and position sensors on production lines. IC Role / Device Role / Timing Role: CAN-connected remote I/O processor with programmable debounce, pulse-width measurement, and event-triggered interrupts. Use Value: 9 external interrupt sources (INT0–INT4, KI0–KI3) and 69 interrupt vectors enable responsive handling of fast industrial signals without host polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21346XJFP | No data flash (0 KB); same CAN module, ROM/RAM size, and package. | Suitable where firmware updates occur only during factory programming - not for field-upgradable systems. | Select when BGO-based runtime parameter storage is unnecessary and cost reduction is prioritized. |
| R5F21346YJFP | No CAN module; retains 4 KB data flash (1 KB × 4) and identical memory map. | Applicable in LIN-only or UART-based networks where CAN physical layer is omitted. | Choose when CAN bus connectivity is excluded from system architecture but data flash persistence remains essential. |
Compared with R5F21346WJFP, R5F21346XJFP removes data flash while retaining CAN - trading field update capability for lower cost; R5F21346YJFP removes CAN but keeps data flash - shifting focus to LIN/UART-based control where deterministic bus arbitration is less critical.
Availability
R5F21346WJFP is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, climate control panels, and factory automation I/O modules requiring stable component supply across long product lifecycles.
Supply support for R5F21346WJFP 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 R5F21346WJFP, was designed for cost-effective, real-time embedded control in automotive body electronics and industrial automation - emphasizing CAN integration, analog sensing, and motor drive peripherals.
FAQ
What is the operating temperature range for R5F21346WJFP?
R5F21346WJFP is rated for −40°C to +85°C ambient operation (J version). This specification meets AEC-Q100 Grade 3 requirements for non-engine-compartment automotive applications such as door modules, seat controls, and interior lighting. The device does not support extended temperature ranges unless upgraded to the K-version variant (R5F21346WKFP).
Does R5F21346WJFP support in-system programming of its data flash?
Yes, R5F21346WJFP supports in-system programming of its 4 KB data flash (1 KB × 4 blocks) via on-chip debug interface and background operation (BGO) function. This allows firmware to rewrite calibration data or configuration parameters during normal operation without halting the CPU - a key feature for adaptive automotive systems and field-upgradable industrial controllers.
How many CAN mailboxes does R5F21346WJFP provide, and what protocol versions are supported?
R5F21346WJFP integrates one CAN controller with 16 dedicated mailboxes and full compliance with ISO 11898-1. It supports both CAN 2.0A (11-bit ID) and CAN 2.0B (29-bit ID) protocols, enabling flexible message filtering, prioritization, and transmission scheduling in automotive and industrial networks.
Can R5F21346WJFP generate three-phase PWM waveforms without external components?
R5F21346WJFP's Timer RD supports reset-synchronous and complementary PWM modes that directly output six synchronized PWM signals - sufficient to drive a three-phase inverter bridge. While external gate drivers remain necessary for power stage interfacing, no additional logic or timing ICs are required to generate phase-aligned, dead-time-controlled waveforms.
What is the minimum instruction execution time of R5F21346WJFP at maximum frequency?
At f(XIN) = 20 MHz and VCC = 2.7–5.5 V, R5F21346WJFP achieves a minimum instruction execution time of 50 ns. This timing derives from the R8C CPU core's optimized pipeline and 16-bit architecture - delivering deterministic real-time response for time-critical tasks like motor commutation and CAN message handling.
R5F21346WJFP#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, IEBus, LINbus, SIO, SSU, UART/USART
- Peripherals:
- POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 43
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 2.5K 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:
R5F21346WJFP#U0 FAQ
1.How can I place an order for R5F21346WJFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21346WJFP#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 R5F21346WJFP#U0 reliable?
The price and inventory of R5F21346WJFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21346WJFP#U0 is usually 5 days.
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R5F21346WJFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21346WJFP#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 R5F21346WJFP#U0?
For technical support, including R5F21346WJFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21346WJFP#U0 requirements.
6.How does Aetrix verify that R5F21346WJFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21346WJFP#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 R5F21346WJFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21346WJFP#U0?
All R5F21346WJFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21346WJFP#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 R5F21346WJFP#U0 part is unused and in its original packaging.
Return procedure for R5F21346WJFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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