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Renesas R5F21368CNFP#50
- Part No.:
- R5F21368CNFP#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F21368CNFP#50.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 64LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,634
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Product details
Overview
R5F21368CNFP#50 from Renesas Electronics is a 16-bit R8C CPU core microcontroller with 64 KB program ROM, 6 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 59 CMOS I/O ports with pull-up select, integrated 10-bit × 12-channel A/D converter, dual 8-bit D/A converters, and hardware LIN module. It targets embedded control in consumer audio equipment and office automation systems.
For engineers reviewing the R5F21368CNFP#50 datasheet, R5F21368CNFP#50 pinout, R5F21368CNFP#50 application, or R5F21368CNFP#50 equivalent, key selection criteria include its 64-pin LQFP (PLQP0064KB-A) package, −20°C to +85°C industrial temperature grade, real-time clock (Timer RE), and multi-mode low-power operation (wait/stop modes down to 2.0 µA).
Technical Context
The R5F21368CNFP#50 implements the R8C CPU core with 89 fundamental instructions, 20-bit address space (1 Mbyte), and dedicated 16×16→32-bit multiplier with MAC support. Its memory architecture separates program ROM (04000h–13FFFh), data flash (03000h–03FFFh), and RAM (00400h–01BFFh), enabling concurrent BGO writes during code execution.
Peripheral integration includes four independent timer groups (RA–RG) supporting PWM, input capture, three-phase motor control (complementary & reset-synchronous PWM on Timer RD), UART0/1/2 with I²C mode, SSU, LIN hardware, and dual comparators - all mapped to a unified 64-pin LQFP I/O grid with programmable function assignment per pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 20-bit PC, register bank switching, and 16×16→32-bit multiplier for deterministic math loops. |
| Memory | 64 KB program ROM, 6 KB RAM, 4 KB data flash (1 KB × 4 blocks) with BGO-enables firmware updates without halting application. |
| Operating Speed | 20 MHz max (50 ns min instruction time at VCC = 2.7–5.5 V); supports 5 MHz at 1.8 V for ultra-low-voltage operation. |
| Analog Peripherals | 10-bit A/D converter × 12 channels with sample-and-hold and sweep mode; two 8-bit D/A outputs (DA0/DA1) for analog signal generation. |
| Timers | Timer RA/RB (8-bit), RC/RD/RF/RG (16-bit), RE (real-time clock); RD supports 6-pin complementary PWM for 3-phase motor drive. |
| Communication | UART0/1/2 (I²C-capable on UART2), SSU, hardware LIN (using Timer RA + UART0), and 2 comparator B inputs with reference voltage support. |
| Power Management | Wait mode (4.0 µA @ 3.0 V, 32 kHz XCIN), stop mode (2.0 µA), voltage detection circuit with selectable levels for POR and brown-out protection. |
Pinout & Package
Package: 64-pin LQFP (PLQP0064KB-A), 10 mm × 10 mm, 0.5 mm pitch, N-version (−20°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Analog input / D/A output / Timer RC I/O | AN0–AN7 + DA0/DA1 multiplexing; enables sensor interface and analog output on same pins with software configuration. |
| P1_0–P1_3 | Key interrupt / A/D input / Timer RB output | KI0–KI3 + AN8–AN11 + TRBO support touch-key scanning and analog sensing with hardware interrupt wake-up. |
| P2_0–P2_7 | Timer RD I/O (TRDIOx) | 8 dedicated pins for 6-pin complementary PWM and 3-phase waveform generation-no external gate driver needed for BLDC control. |
| P3_4/P3_5/P3_7 | I²C bus (SDA2/SCL2/SSO) | Shared SDA2/SCL2 pins with UART2 and SSU allow flexible peripheral routing without additional GPIO overhead. |
| XIN/XOUT | High-speed crystal oscillator input/output | Supports 20 MHz crystal for precise timing; XOUT can accept external clock if XIN left open-simplifies clock source selection. |
| XCIN/XCOUT | 32 kHz real-time clock crystal input/output | Enables battery-backed RTC operation independent of main system clock; critical for power-fail logging and wake-on-timer. |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erasure/programming proceeds concurrently with CPU code execution-no application stall during firmware update. |
| Hardware LIN Module | Dedicated LIN 2.1 protocol engine using Timer RA and UART0-offloads bit timing, checksum, and frame handling from CPU. |
| Three-Phase Motor Control | Timer RD provides synchronized 6-pin complementary PWM with dead-time insertion and fault shutdown-replaces discrete gate driver ICs. |
| Multi-Voltage Operation | 1.8–5.5 V supply range with 5 MHz operation at 1.8 V-supports direct battery (Li-ion/AA) interfacing without LDO. |
| EMI/EMS Optimized Design | On-chip oscillators, spread-spectrum clock options, and layout-optimized I/O drive strength reduce radiated emissions in consumer-grade PCBs. |
Applications
| Audio System Control | Office Equipment Motor Drive |
|---|---|
|
Use Scenario: Digital audio mixer with volume control, tone adjustment, and display interface. IC Role / Device Role / Timing Role: Main system controller managing ADC inputs (microphone line-in), DAC outputs (headphone/line-out), and UART-based display updates. Use Value: Integrated 12-channel 10-bit ADC and dual 8-bit DAC eliminate external converters; BGO enables seamless firmware updates during playback. |
Use Scenario: Laser printer paper feed and fuser motor control subsystem. IC Role / Device Role / Timing Role: Dedicated motion controller generating 3-phase PWM waveforms and monitoring encoder feedback via Timer RG phase counting. Use Value: Timer RD's reset-synchronous PWM and complementary mode directly drive 3-phase inverter bridges; 2.0 µA stop mode extends standby battery life. |
| Home Appliance UI Panel | Industrial Sensor Node |
|
Use Scenario: Microwave oven control panel with keypad, LED display, and safety interlock monitoring. IC Role / Device Role / Timing Role: Real-time coordinator of KI0–KI3 key scan, Timer RE real-time clock for cooking timers, and voltage-detection reset for brown-out recovery. Use Value: Hardware key interrupt with debounce reduces CPU load; 7-level priority interrupt system ensures immediate response to door-open events. |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality. IC Role / Device Role / Timing Role: Low-power data acquisition node using A/D sweep mode, XCIN-based RTC for timestamping, and UART2/I²C for sensor communication. Use Value: 4.0 µA wait mode at 32 kHz enables >1-year battery life; integrated voltage detector replaces external supervisor IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21368CNFA#50 | Same core, memory, and peripherals; differs only in package (PLQP0064GA-A, thinner 1.4 mm height vs. 1.6 mm for PLQP0064KB-A). | Identical functionality; selected when board stack height or thermal profile requires lower-profile LQFP. | Drop-in replacement for space-constrained designs where mechanical clearance is critical. |
| R5F21368CDFP#50 | Same silicon; rated for −40°C to +85°C (D version) vs. −20°C to +85°C (N version); identical electrical specs and pinout. | Required for automotive cabin modules or outdoor industrial enclosures needing extended temperature tolerance. | Select when operating ambient exceeds 85°C or drops below −20°C; no design changes needed beyond qualification testing. |
Compared with R5F21368CNFP#50, the CNFA variant offers identical performance in a mechanically thinner package for height-sensitive layouts, while the CDFP variant adds extended temperature range compliance without altering firmware or PCB layout-both preserve full peripheral compatibility and BGO capability.
Availability
R5F21368CNFP#50 is available at Aetrix Electronics and suitable for audio equipment, office automation devices, and home appliance control systems requiring stable component supply across long production lifecycles.
Supply support for R5F21368CNFP#50 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/36C Group is designed for cost-sensitive, high-integration embedded control applications demanding low power, rich analog peripherals, and robust real-time performance in consumer and industrial equipment.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F21368CNFP#50?
The R5F21368CNFP#50 supports a maximum operating frequency of 20 MHz at a supply voltage of 2.7–5.5 V. At reduced voltage (1.8–5.5 V), it operates up to 5 MHz-enabling battery-powered operation without external regulators. Its 89-instruction R8C core achieves 50 ns minimum instruction time under full-voltage conditions.
Does the R5F21368CNFP#50 support in-system programming and background operation of data flash?
Yes, the R5F21368CNFP#50 includes 4 KB of data flash (1 KB × 4 blocks) with full background operation (BGO) support. This allows erase and write operations to proceed concurrently with CPU program execution-critical for over-the-air firmware updates and runtime parameter storage without application interruption.
How many analog-to-digital and digital-to-analog channels does the R5F21368CNFP#50 integrate?
The R5F21368CNFP#50 integrates a 10-bit resolution A/D converter with 12 input channels (AN0–AN11), including sample-and-hold and sweep mode. It also provides two independent 8-bit D/A converters (DA0 and DA1), both accessible via P0_6 and P0_7 pins-supporting closed-loop analog control and audio signal generation.
What timer resources are available on the R5F21368CNFP#50 for motor control applications?
The R5F21368CNFP#50 provides Timer RD (16-bit × 2, 4 capture/compare registers) with reset-synchronous and complementary PWM modes driving six output pins-enabling direct 3-phase BLDC or stepper motor control. Timer RG adds phase counting for 2-phase encoder feedback, completing a self-contained motion control subsystem.
Is hardware LIN protocol support built into the R5F21368CNFP#50, and how is it implemented?
Yes, the R5F21368CNFP#50 includes a dedicated hardware LIN module compliant with LIN 2.1, implemented using Timer RA for baud rate generation and UART0 for frame formatting and checksum calculation. This offloads protocol handling from the CPU, ensuring deterministic timing and reducing firmware complexity in automotive body electronics.
R5F21368CNFP#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- R8C/3x/36C
- Packaging:
- Tape & Reel (TR)
- 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:
- 59
- 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):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 12x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21368CNFP#50 FAQ
1.How can I place an order for R5F21368CNFP#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21368CNFP#50 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 R5F21368CNFP#50 reliable?
The price and inventory of R5F21368CNFP#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21368CNFP#50 is usually 5 days.
3.What payment methods are accepted for R5F21368CNFP#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21368CNFP#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21368CNFP#50?
R5F21368CNFP#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21368CNFP#50 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 R5F21368CNFP#50?
For technical support, including R5F21368CNFP#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21368CNFP#50 requirements.
6.How does Aetrix verify that R5F21368CNFP#50 is sourced from the original manufacturer or authorized distributors?
All R5F21368CNFP#50 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 R5F21368CNFP#50 meets industry standards.
7.What is the process for return or replacement of R5F21368CNFP#50?
All R5F21368CNFP#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21368CNFP#50, 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 R5F21368CNFP#50 part is unused and in its original packaging.
Return procedure for R5F21368CNFP#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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