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Renesas R5F21344CDFP#U0
- Part No.:
- R5F21344CDFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21344CDFP#U0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,882
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Product details
Overview
R5F21344CDFP#U0 from Renesas Electronics is a 16-bit R8C CPU core MCU with 16 KB program flash, 1.5 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), integrates 10-bit × 12-channel ADC, dual 8-bit DACs, LIN hardware module, and six timer units (RA–RE, RD dual-channel), targeting embedded control in consumer appliances and office equipment.
For engineers reviewing the R5F21344CDFP#U0 datasheet, R5F21344CDFP#U0 pinout, R5F21344CDFP#U0 application, or R5F21344CDFP#U0 equivalent, key selection criteria include its −40°C to +85°C industrial temperature grade (D version), 48-pin LQFP package (PLQP0048KB-A), integrated voltage detection with 3-level monitoring, and real-time clock (Timer RE) with weekday counting capability.
Technical Context
The R5F21344CDFP#U0 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.
It supports four clock sources: XIN (up to 20 MHz crystal/resonator), XCIN (32 kHz crystal), high-speed on-chip oscillator (adjustable), and low-speed on-chip oscillator. Power management includes wait mode (3.5 µA @ 3.0 V, 32 kHz) and stop mode (2.0 µA @ 3.0 V), with oscillation stop detection and voltage monitor reset functions.
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 for efficient signal/control math |
| Operating Frequency | 20 MHz max (VCC = 2.7–5.5 V); 5 MHz min (VCC = 1.8–5.5 V) - enables deterministic timing in motor control and sensor polling |
| Memory | 16 KB program flash, 1.5 KB RAM, 4 KB data flash (1 KB × 4 blocks) with BGO - allows firmware updates without halting execution |
| Analog Peripherals | 10-bit × 12-channel ADC with sample-and-hold and sweep mode; dual 8-bit DACs (DA0/DA1) - supports closed-loop analog feedback |
| Timers | Timer RA (8-bit), RB (8-bit PWM), RC (16-bit, 4 capture/compare), RD (dual 16-bit, 6-pin complementary PWM), RE (real-time clock with weekday counter) |
| Communication | UART0/1/2 (UART2 supports I²C-bus mode), SSU (shared with I²C), hardware LIN (via Timer RA + UART0) - enables multi-protocol connectivity in appliance networks |
| Supply & Temp | VCC = 1.8–5.5 V; operating ambient: −40°C to +85°C (D version) - certified for industrial-grade reliability in variable environments |
Pinout & Package
Package: 48-pin LQFP (PLQP0048KB-A), 7 mm × 7 mm, 0.5 mm pitch - compatible with standard surface-mount assembly and reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | CMOS I/O port with analog input (AN0–AN7), DA0/DA1 outputs | Configurable as digital I/O, ADC inputs, or DAC outputs; pull-up resistors programmable per pin |
| P1_0–P1_7 | CMOS I/O port with AN8–AN11, KI0–KI3, TRAIO, CLK0 | Supports key scan (KI0–KI3), timer I/O, and additional ADC channels; enables touch-button interfaces |
| P2_0–P2_7, P3_0–P3_1, P3_3–P3_5, P3_7 | CMOS I/O port with TRDIOx, TRCIOx, SCL2/SDA2, RXD2/TXD2 | Primary interface for Timer RD/RC, I²C-bus (UART2), and serial communication - enables motor driver control and sensor bus integration |
| P4_2–P4_7, P6_0–P6_7 | VREF, MODE, XCIN/XCOUT, XIN/XOUT, RESET, TREO, CLK1/CLK2 | System clock configuration (crystal/on-chip), reset supervision, reference voltage input, and RTC output - ensures stable timing and fault-safe startup |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erasure/programming proceeds while CPU executes main code - enables seamless firmware field updates |
| Hardware LIN Module | Integrated LIN 2.0/2.1 support via Timer RA and UART0 - eliminates external transceiver for automotive body electronics and appliance sub-networks |
| Real-Time Clock (Timer RE) | Counts seconds, minutes, hours, and weekday - provides time-stamped logging and scheduled wake-up without external RTC IC |
| Voltage Detection Circuit | Three configurable voltage detection levels with power-on reset and selectable thresholds - ensures reliable brown-out recovery in unregulated supplies |
| Low-Power Modes | Wait mode (3.5 µA @ 32 kHz) and stop mode (2.0 µA) - extends battery life in portable or energy-conscious applications |
Applications
| Home Appliance Control | Office Equipment Motor Drive |
|---|---|
Use Scenario: Microcontroller in washing machine main board managing water valve, pump, heater, and user interface. IC Role / Device Role / Timing Role: Central controller executing state-machine logic, reading temperature/level sensors via ADC, driving relays/SSRs, and communicating via UART to display panel. Use Value: Integrated 10-bit ADC, dual DACs for analog actuator control, and LIN support reduce BOM count and simplify wiring harness design. | Use Scenario: Embedded controller in multifunction printer managing paper feed, scanner illumination, and toner delivery motors. IC Role / Device Role / Timing Role: Real-time motion controller using Timer RD's complementary PWM to drive 3-phase BLDC motors with synchronized dead-time insertion. Use Value: Dual 16-bit timers with 6-pin PWM output and reset-synchronous mode enable precise trapezoidal commutation without external gate drivers. |
| Audio System Power Management | Industrial Sensor Hub |
Use Scenario: Standby power supervisor in AV receiver that monitors IR remote input and wakes system on command. IC Role / Device Role / Timing Role: Low-power wake controller using key input interrupts (KI0–KI3), internal 32 kHz oscillator, and stop mode with RTC alarm. Use Value: 2.0 µA stop-mode current and programmable wake sources allow >1-year battery backup for remote control receivers. | Use Scenario: Data acquisition node collecting temperature, humidity, and vibration from multiple analog sensors in factory automation. IC Role / Device Role / Timing Role: Signal conditioner and protocol translator using ADC sweep mode, DTC for automatic data transfer, and UART2 in I²C mode to interface with digital sensors. Use Value: 12-channel ADC with sample-and-hold and DTC offloads CPU during burst sampling, improving throughput and reducing firmware complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21344CNFP | Same core, memory, and peripherals but rated for −20°C to +85°C (N version) | Suitable for commercial indoor environments only; lacks extended cold-start capability | Select when operating ambient stays above −20°C and cost sensitivity outweighs industrial qualification |
| R5F21345CDFP | 24 KB program flash, 2 KB RAM, same D-version temp range and package | Provides larger firmware space for feature-rich firmware (e.g., USB HID stack, advanced UI rendering) | Choose when application requires >16 KB code space while retaining identical peripheral set and footprint |
Compared with R5F21344CNFP, the R5F21344CDFP#U0 delivers guaranteed operation down to −40°C and matches its peripheral suite; versus R5F21345CDFP, it trades flash/RAM capacity for tighter cost control while preserving all timing-critical peripherals like LIN and complementary PWM.
Availability
R5F21344CDFP#U0 is available at Aetrix Electronics and suitable for home appliance control, office equipment motor drive, audio system power management, and industrial sensor hub applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F21344CDFP#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/34C Group, including R5F21344CDFP#U0, was designed for cost-sensitive, high-reliability embedded control in consumer and industrial equipment - emphasizing EMI/EMS robustness, integrated analog peripherals, and ultra-low-power operation.
FAQ
What is the maximum operating frequency of the R5F21344CDFP#U0 and under what supply conditions?
The R5F21344CDFP#U0 achieves a maximum operating frequency of 20 MHz when supplied with VCC = 2.7–5.5 V and using the XIN clock source. At lower supply voltages (1.8–5.5 V), the maximum frequency reduces to 5 MHz. This dual-frequency capability allows flexible trade-offs between performance and power efficiency depending on system requirements and power rail constraints.
Does the R5F21344CDFP#U0 support background operation (BGO) for data flash programming?
Yes, the R5F21344CDFP#U0 supports background operation (BGO) for its 4 KB data flash (1 KB × 4 blocks). This allows the CPU to continue executing application code while data flash sectors are being erased or programmed - essential for over-the-air firmware updates and runtime parameter storage without system interruption.
What is the purpose of the MODE pin on the R5F21344CDFP#U0 and how should it be connected?
The MODE pin on the R5F21344CDFP#U0 must be connected to VCC via an external resistor to configure the device for single-chip operation mode. It is not a functional I/O pin during normal operation but serves as a hardware boot configuration input - incorrect connection may prevent proper initialization or cause undefined behavior during reset sequence.
How many independent PWM outputs does the R5F21344CDFP#U0 provide, and which timers generate them?
The R5F21344CDFP#U0 provides up to 6 independent PWM outputs via Timer RD (dual 16-bit unit), plus additional PWM from Timer RB (1 output) and Timer RC (3 outputs in standard PWM mode). Timer RD supports complementary PWM with dead-time control - critical for driving half-bridge or three-phase inverter stages in motor control applications.
Is the R5F21344CDFP#U0 pin-compatible with other members of the R8C/34C Group, such as R5F21345CDFP?
Yes, the R5F21344CDFP#U0 is pin-compatible with all R8C/34C Group variants in the same PLQP0048KB-A package, including R5F21345CDFP and R5F21346CDFP. They share identical pin assignments, electrical characteristics, and peripheral register maps - enabling drop-in replacement for memory scaling without PCB redesign.
R5F21344CDFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/3x/34C
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 1.5K 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:
R5F21344CDFP#U0 FAQ
1.How can I place an order for R5F21344CDFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21344CDFP#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 R5F21344CDFP#U0 reliable?
The price and inventory of R5F21344CDFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21344CDFP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21344CDFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21344CDFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21344CDFP#U0?
R5F21344CDFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21344CDFP#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 R5F21344CDFP#U0?
For technical support, including R5F21344CDFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21344CDFP#U0 requirements.
6.How does Aetrix verify that R5F21344CDFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21344CDFP#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 R5F21344CDFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21344CDFP#U0?
All R5F21344CDFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21344CDFP#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 R5F21344CDFP#U0 part is unused and in its original packaging.
Return procedure for R5F21344CDFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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