My Inquiry
My Account
Renesas R5F21346UDFP#V0
- Part No.:
- R5F21346UDFP#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21346UDFP#V0.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,401
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F21346UDFP#V0 from Renesas is a 16-bit R8C CPU core MCU with 32 KB program ROM, 4 KB RAM, and 4 KB data flash (1 KB × 4 blocks) supporting background operation (BGO). It operates at up to 20 MHz (50 ns min instruction time), integrates USB 2.0 Full-Speed peripheral controller with 448-byte FIFO, and targets embedded control in consumer audio, cameras, and industrial equipment.
For engineers reviewing the R5F21346UDFP#V0 datasheet, R5F21346UDFP#V0 pinout, R5F21346UDFP#V0 application, or R5F21346UDFP#V0 equivalent, key selection criteria include −40°C to +85°C operating range (D version), 48-pin LQFP package, USB peripheral-only functionality (not host/OTG), and integrated 10-bit × 12-channel ADC with sample-and-hold.
Technical Context
The R5F21346UDFP#V0 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit hardware multiplier, and multiply-accumulate capability. Its memory map spans 1 Mbyte, with fixed interrupt vector table at 0FFDCh–0FFFFh and data flash at 03000h–03FFFh.
USB functionality is strictly peripheral-mode only: full-speed (12 Mbps) compliance, DCP + 4 configurable pipes (PIPE4–PIPE7), 64-byte DCP + dual-buffered 64-byte PIPE4/PIPE5 + 64-byte PIPE6/PIPE7, supporting control/bulk/interrupt transfers - no OTG, no host mode, no USB_ID or USB_EXICEN signals.
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 | 32 KB program ROM + 4 KB RAM + 4 KB data flash (1 KB × 4 blocks, BGO supported) |
| USB Interface | USB 2.0 Full-Speed peripheral controller only; no host/OTG; 448-byte FIFO (DCP=64B, PIPE4/5=128B, PIPE6/7=64B) |
| Analog Peripherals | 10-bit ADC × 12 channels with sample-and-hold and sweep mode; 2 comparator B circuits |
| Timers | Timer RA/RB (8-bit × 2), Timer RC/RF (16-bit × 2), watchdog timer (14-bit), DTC (1 channel) |
| Operating Range | −40°C to +85°C ambient temperature (D version); supply voltage 1.8–5.5 V |
| Package | 48-pin LQFP (PLQP0048KB-A / 48P6Q-A), 7 mm × 7 mm, 0.5 mm pitch |
Pinout & Package
48-pin LQFP (PLQP0048KB-A), RoHS-compliant, surface-mount package with exposed thermal pad (not electrically connected). Pin 1 marked by notch or dot; standard JEDEC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | CMOS I/O port + analog input (AN0–AN7) | Configurable as digital I/O or ADC inputs; pull-up resistors programmable per pin |
| P1_0–P1_7 | CMOS I/O port + analog input (AN8–AN11) + key interrupt (KI0–KI3) | Supports wake-up from stop/wait modes via KI0–KI3; AN8–AN11 share pins with KI functions |
| USB_DP / USB_DM | D+/D− differential I/O for USB transceiver | On-chip full-speed transceiver; requires external 1.5 kΩ D+ pull-up (controlled by USB_DPUPE) |
| USB_VBUS | VBUS detection input | Monitors USB cable connection status during operation; logic-high = VBUS present |
| USB_DPUPE | USB D+ pull-up enable output | Drives internal 1.5 kΩ pull-up resistor on D+ when operating as USB function device |
| XIN / XOUT | Crystal/resonator interface | Supports external crystal (1–20 MHz) or ceramic resonator; high-speed on-chip oscillator available |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Enables concurrent code execution while erasing/programming data flash blocks without CPU stall |
| USB Peripheral Controller | Dedicated full-speed USB 2.0 peripheral engine with 5-pipe architecture and automatic descriptor handling |
| Low-Power Modes | Wait mode (4.0 µA @ 3.0 V) and stop mode (2.0 µA @ 3.0 V) with selective peripheral clock gating |
| Integrated Analog | 12-channel 10-bit ADC with sample-and-hold and hardware-triggered sweep conversion (ADTRG) |
| Hardware Multiplier | 16×16→32-bit multiply and 16×16+32→32-bit MAC operations in single cycle for real-time math |
Applications
| USB-Enabled Consumer Audio | Digital Camera Subsystem Control |
|---|---|
|
Use Scenario: Embedded audio codec interface and USB audio class (UAC) endpoint in portable speakers or soundbars. IC Role / Device Role / Timing Role: USB peripheral controller managing isochronous audio data transfer; 10-bit ADC digitizes analog line-in; timers generate PWM for LED indicators. Use Value: Eliminates external USB PHY and reduces BOM count; BGO enables firmware updates over USB without audio interruption. |
Use Scenario: Lens focus motor control, image sensor configuration, and USB mass storage interface in compact digital cameras. IC Role / Device Role / Timing Role: MCU executes autofocus algorithms using ADC feedback; USB peripheral handles SD card image upload; LIN module synchronizes with flash controller. Use Value: Integrated USB + ADC + LIN reduces interconnect complexity; −40°C rating supports outdoor camera operation. |
| Industrial HMI Panel | Smart Home Appliance Controller |
|
Use Scenario: Touch-button interface, display backlight control, and USB-based firmware update in factory HMIs. IC Role / Device Role / Timing Role: Key interrupt inputs (KI0–KI3) detect button presses; Timer RB generates adjustable PWM for LED backlight; USB provides secure firmware download path. Use Value: Single-chip solution replaces discrete microcontroller + USB bridge; 4 KB data flash stores calibration data and update images. |
Use Scenario: Washing machine main control unit managing motor drive, water valve timing, and USB diagnostics port. IC Role / Device Role / Timing Role: ADC monitors current sense and temperature; Timer RC controls triac firing for heater/motor; USB enables service technician access to logs and error codes. Use Value: −40°C to +85°C rating ensures reliability in laundry room environments; BGO allows field updates without halting appliance operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit USB-peripheral MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21346UNFP | Same core, ROM, RAM, and peripherals; rated for −20°C to +85°C (N version) | Limited to commercial/indoor environments; unsuitable for extended cold storage or outdoor deployment | Select when ambient temperature stays above −20°C and cost sensitivity outweighs extended temp range |
| R5F21348UDFP | 64 KB program ROM + 8 KB data flash; identical package, pinout, and peripheral set | Supports larger firmware (e.g., USB HID + CDC composite devices) and more persistent data logging | Choose when firmware size exceeds 32 KB or >4 KB non-volatile parameter storage is required |
Compared with R5F21346UDFP#V0, R5F21346UNFP trades extended temperature tolerance for lower cost in benign environments, while R5F21348UDFP provides double the program memory and data flash capacity without changing PCB layout or driver software.
Availability
R5F21346UDFP#V0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart home appliance controllers, and USB-enabled consumer audio systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F21346UDFP#V0 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, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/34U Group, including R5F21346UDFP#V0, was designed for cost-sensitive, USB-integrated embedded control in consumer electronics and industrial equipment where low power, small footprint, and peripheral integration are critical.
FAQ
What is the maximum operating frequency and voltage range for R5F21346UDFP#V0?
R5F21346UDFP#V0 supports up to 20 MHz operation at VCC = 2.7–5.5 V (USB not used), and 5 MHz at VCC = 1.8–5.5 V. Minimum instruction execution time is 50 ns under 20 MHz/2.7–5.5 V conditions. The D version guarantees operation from −40°C to +85°C across this full voltage range.
Does R5F21346UDFP#V0 support USB host or OTG functionality?
No. R5F21346UDFP#V0 implements USB 2.0 Full-Speed peripheral-only functionality. It lacks USB_ID, USB_EXICEN, USB_OVRCURB, and USB_DRPD signals shown in R8C/34K Group pinouts. Host or OTG operation is not supported - only device-mode enumeration and data transfer via DCP, bulk, and interrupt pipes.
How is data flash used in R5F21346UDFP#V0, and what endurance does it offer?
R5F21346UDFP#V0 includes 4 KB of data flash organized as four 1-KB blocks (A–D), each erasable independently. It supports background operation (BGO), allowing code execution during erase/write. Endurance is rated at 10,000 write/erase cycles per block, with programming/erasure voltage matching VCC (2.7–5.5 V).
What low-power modes are available on R5F21346UDFP#V0, and what are their typical currents?
R5F21346UDFP#V0 offers wait mode (typ. 4.0 µA at 3.0 V) and stop mode (typ. 2.0 µA at 3.0 V), both retaining RAM and register contents. Standard operating mode draws typ. 7.0 mA at 5.0 V/20 MHz. Wake-up sources include INT0–INT4, KI0–KI3, and ADTRG, enabling responsive low-power sensing.
Is R5F21346UDFP#V0 pin-compatible with other R8C/34U or R8C/34K Group MCUs?
Yes - R5F21346UDFP#V0 uses the PLQP0048KB-A (48P6Q-A) 48-pin LQFP package shared across R8C/34U and R8C/34K Groups. Pin assignments match Figure 1.5 (R8C/34U), including USB_DPUPE but excluding USB_ID, USB_EXICEN, and USB_OVRCURB. Software and layout are compatible within the R8C/34U family.
R5F21346UDFP#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/3x/34U
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, LINbus, SIO, SSU, UART/USART, USB
- Peripherals:
- POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 36
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 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:
R5F21346UDFP#V0 FAQ
1.How can I place an order for R5F21346UDFP#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21346UDFP#V0 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 R5F21346UDFP#V0 reliable?
The price and inventory of R5F21346UDFP#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21346UDFP#V0 is usually 5 days.
3.What payment methods are accepted for R5F21346UDFP#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21346UDFP#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21346UDFP#V0?
R5F21346UDFP#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21346UDFP#V0 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 R5F21346UDFP#V0?
For technical support, including R5F21346UDFP#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21346UDFP#V0 requirements.
6.How does Aetrix verify that R5F21346UDFP#V0 is sourced from the original manufacturer or authorized distributors?
All R5F21346UDFP#V0 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 R5F21346UDFP#V0 meets industry standards.
7.What is the process for return or replacement of R5F21346UDFP#V0?
All R5F21346UDFP#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21346UDFP#V0, 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 R5F21346UDFP#V0 part is unused and in its original packaging.
Return procedure for R5F21346UDFP#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F21346UDFP#V0 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
