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Renesas R5F21346CDFP#30
- Part No.:
- R5F21346CDFP#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21346CDFP#30.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
R5F21346CDFP#30 from Renesas Electronics is a 16-bit R8C CPU core microcontroller with 32 KB flash program ROM, 2.5 KB RAM, and 4 KB data flash (1 KB × 4 blocks) supporting background operation (BGO). It operates at up to 20 MHz (VCC = 2.7–5.5 V), features 43 CMOS I/O ports with pull-up select, and integrates UART0/1/2, I²C, LIN, 10-bit × 12-channel ADC, dual 8-bit DACs, and six timer modules (RA–RE + RD dual 16-bit) for motor control and real-time clocking in consumer appliance systems.
For engineers reviewing the R5F21346CDFP#30 datasheet, R5F21346CDFP#30 pinout, R5F21346CDFP#30 application, or R5F21346CDFP#30 equivalent, key selection criteria include its -40°C to +85°C industrial temperature grade (D version), 48-pin LQFP package (PLQP0048KB-A), on-chip debug capability, and hardware LIN module built on Timer RA and UART0 - critical for cost-sensitive embedded control designs requiring functional safety-aware communication.
Technical Context
The R5F21346CDFP#30 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its memory map spans 1 Mbyte (00000h–FFFFFh), with program ROM starting at 08000h and data flash at 03000h–03FFFh.
It supports four clock sources: XIN (up to 20 MHz), XCIN (32 kHz), high-speed on-chip oscillator (frequency-adjustable), and low-speed on-chip oscillator - enabling flexible power management across standard, wait, and stop modes with current as low as 2.0 µA in stop mode (VCC = 3.0 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 16×16→32-bit multiplier, and MAC support - enables efficient signal processing in resource-constrained appliances. |
| Memory | 32 KB flash program ROM, 2.5 KB RAM, 4 KB data flash (1 KB × 4 blocks) with BGO - allows firmware updates without halting application execution. |
| Operating Voltage | 1.8–5.5 V supply range - supports direct interface with legacy 3.3 V and 5 V peripherals without level-shifting. |
| Temperature Grade | -40°C to +85°C (D version) - qualified for industrial and automotive cabin-adjacent consumer equipment environments. |
| Peripherals | UART × 3 (UART0/1/2), I²C-bus, hardware LIN, 10-bit × 12-channel ADC, dual 8-bit DACs, six timers (including PWM-capable Timer RD with 6-pin complementary output) - integrates motor drive, sensor acquisition, and serial comms in one chip. |
| Power Modes | Standard, wait (3.5 µA @ 32 kHz), and stop (2.0 µA) modes - extends battery life in always-on or low-duty-cycle household devices. |
| Package | 48-pin LQFP (PLQP0048KB-A, 7 mm × 7 mm, 0.5 mm pitch) - compatible with standard SMT assembly and offers 43 user-configurable CMOS I/O pins. |
Pinout & Package
Package: 48-pin LQFP (PLQP0048KB-A), 7 mm × 7 mm body, 0.5 mm pin pitch, exposed pad not specified - suitable for automated reflow assembly and thermal management in compact consumer PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Analog input / D/A output / timer I/O | AN0–AN7 inputs for ADC; DA0/DA1 outputs; TRCIOx for Timer RC capture/compare - enables mixed-signal control of sensors and actuators. |
| P1_0–P1_7 | Analog input / key interrupt / serial I/O | AN8–AN11 + KI0–KI3 for touch/key scanning; RXD0/TXD0 for UART0 - supports HMI interfaces with minimal external components. |
| P2_0–P2_7 | Timer RD I/O / external trigger | TRDIOA0–TRDIOD1 and TRDCLK for 6-pin complementary PWM generation - directly drives 3-phase motor gate drivers or LED arrays. |
| P3_3–P3_7 | I²C / SSU / LIN / UART2 | Shared SCL2/SDA2, SSI/SCS/SSCK, and LIN transceiver pins - consolidates communication interfaces onto 5 pins with software-selectable function mapping. |
| XIN/XOUT, XCIN/XCOUT | External clock inputs/outputs | Supports ceramic resonator (XIN) and 32.768 kHz crystal (XCIN) - provides precise timing for RTC (Timer RE) and EMI-optimized system clocks. |
| RESET, MODE | Reset control / boot configuration | Active-low RESET with internal pull-up; MODE tied to VCC via resistor selects single-chip mode - simplifies reset circuitry and eliminates boot strapping resistors. |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erase/write during program execution - enables over-the-air firmware updates without interrupting real-time motor or audio control loops. |
| Hardware LIN Module | Dedicated LIN physical layer using Timer RA and UART0 - reduces CPU overhead and ensures deterministic timing for automotive-grade diagnostics in white goods. |
| Real-Time Clock (Timer RE) | 8-bit timer with seconds/minutes/hours/days-of-week counting and compare output - delivers calendar-aware timekeeping without external RTC IC or battery backup. |
| EMI/EMS Optimized Design | Integrated noise suppression circuits and multiple low-power modes - meets IEC 61000-4-x immunity requirements for residential appliance certification. |
| On-Chip Debug Interface | Fully integrated debug circuit with flash rewrite capability - eliminates need for external JTAG emulator during development and field firmware recovery. |
Applications
| Home Appliance Motor Control | Smart Audio System Front-End |
|---|---|
|
Use Scenario: Variable-speed control of BLDC compressors in inverter air conditioners and refrigerators. IC Role / Device Role / Timing Role: Primary motor controller executing FOC algorithms, generating 6-pin complementary PWM via Timer RD, and sampling current/voltage via 10-bit ADC. Use Value: Eliminates external gate driver and current sense amplifier; BGO enables field-upgradable motor profiles without service interruption. |
Use Scenario: Volume, tone, and input source management in multi-zone home audio receivers. IC Role / Device Role / Timing Role: System manager interfacing rotary encoders (KI0–KI3), driving OLED display via SPI (SSU), and generating analog bias voltages via dual 8-bit DACs. Use Value: Integrates HMI, display, and analog output functions - reduces BOM count by 4 discrete ICs and simplifies layout in space-constrained chassis. |
| Office Equipment Power Management | Consumer IoT Sensor Hub |
|
Use Scenario: Standby power sequencing and wake-on-LAN monitoring in multifunction printers. IC Role / Device Role / Timing Role: Low-power supervisor using stop mode (2.0 µA), voltage detection (VCA1/VW0C), and UART2 I²C-bus bridge to manage PMIC and network PHY. Use Value: Meets ENERGY STAR® 3.0 standby power limits (<0.5 W) with no external supervisor IC or discrete voltage monitors. |
Use Scenario: Environmental sensing node aggregating temperature, humidity, and motion data for smart home gateways. IC Role / Device Role / Timing Role: Sensor fusion hub acquiring data via ADC (AN0–AN11), timestamping events with Timer RE, and transmitting via UART1 to ESP32 host. Use Value: Single-chip solution replaces MCU + RTC + ADC + I/O expander - cuts PCB area by 35% and enables coin-cell operation for >1 year. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21346CNFP | Same core, peripherals, and pinout; rated for -20°C to +85°C (N version) only. | Limited to commercial indoor environments (e.g., non-industrial audio equipment); unsuitable for garage-mounted HVAC or outdoor kiosks. | Select when ambient temperature stays above -20°C and cost sensitivity outweighs extended temperature qualification. |
| R5F21348CDFP | Higher ROM (48 KB), same RAM (2.5 KB), identical D-version temp grade and 48-pin LQFP package. | Enables larger protocol stacks (e.g., full BLE mesh or Matter SDK) while retaining all R5F21346CDFP#30 peripheral mappings and PCB layout. | Choose when future firmware expansion or added security libraries require >32 KB code space without changing hardware design. |
Compared with R5F21346CNFP, the R5F21346CDFP#30 adds guaranteed operation down to -40°C for harsher environments; compared with R5F21348CDFP, it trades 16 KB ROM for lower unit cost and smaller flash programming time - optimizing for stable, volume-produced appliance firmware.
Availability
R5F21346CDFP#30 is available at Aetrix Electronics and suitable for home appliance motor control, smart audio system front-end, office equipment power management, and consumer IoT sensor hub applications requiring stable component supply across multi-year production cycles.
Supply support for R5F21346CDFP#30 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, and power solutions for automotive, industrial, and consumer markets.
The R8C/34C Group, including R5F21346CDFP#30, was designed for cost-sensitive, high-reliability embedded control in household appliances and office equipment - emphasizing EMI resilience, integrated analog peripherals, and low-power operation.
FAQ
What is the maximum operating frequency and voltage range supported by the R5F21346CDFP#30?
The R5F21346CDFP#30 supports a maximum operating frequency of 20 MHz at VCC = 2.7–5.5 V, and 5 MHz at VCC = 1.8–5.5 V. Its wide voltage range allows direct connection to both 3.3 V and 5 V system rails without regulators, reducing bill-of-materials cost in mixed-voltage consumer electronics designs.
Does the R5F21346CDFP#30 include hardware support for LIN communication?
Yes, the R5F21346CDFP#30 integrates a dedicated hardware LIN module using Timer RA and UART0, enabling ISO 9141-2 and SAE J2602-compliant communication without CPU intervention. This ensures deterministic timing for diagnostics in white goods and eliminates software-based bit-banging overhead.
How many analog-to-digital converter channels does the R5F21346CDFP#30 provide, and what is their resolution?
The R5F21346CDFP#30 includes a 10-bit resolution analog-to-digital converter with 12 input channels (AN0–AN11). It supports sample-and-hold and sweep mode for simultaneous multi-channel acquisition - ideal for motor current sensing, temperature monitoring, and power supply feedback in appliance control systems.
What package type and pin count does the R5F21346CDFP#30 use?
The R5F21346CDFP#30 uses a 48-pin LQFP package designated PLQP0048KB-A (7 mm × 7 mm, 0.5 mm pitch). It provides 43 programmable CMOS I/O ports with selectable pull-up resistors, one input-only pin (P4_2), and dedicated analog/DAC/timer I/O functions mapped across the pin grid.
Is on-chip debug functionality available for the R5F21346CDFP#30, and what capabilities does it support?
Yes, the R5F21346CDFP#30 includes an on-chip debug interface supporting breakpoint setting, register inspection, and real-time memory access. It also enables on-board flash rewrite during debugging - allowing firmware validation and field updates without external emulators or programming fixtures.
R5F21346CDFP#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/3x/34C
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, 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):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 12x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21346CDFP#30 FAQ
1.How can I place an order for R5F21346CDFP#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21346CDFP#30 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 R5F21346CDFP#30 reliable?
The price and inventory of R5F21346CDFP#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21346CDFP#30 is usually 5 days.
3.What payment methods are accepted for R5F21346CDFP#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21346CDFP#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21346CDFP#30?
R5F21346CDFP#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21346CDFP#30 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 R5F21346CDFP#30?
For technical support, including R5F21346CDFP#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21346CDFP#30 requirements.
6.How does Aetrix verify that R5F21346CDFP#30 is sourced from the original manufacturer or authorized distributors?
All R5F21346CDFP#30 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 R5F21346CDFP#30 meets industry standards.
7.What is the process for return or replacement of R5F21346CDFP#30?
All R5F21346CDFP#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21346CDFP#30, 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 R5F21346CDFP#30 part is unused and in its original packaging.
Return procedure for R5F21346CDFP#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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