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Renesas R5F21335CDFP#30
- Part No.:
- R5F21335CDFP#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21335CDFP#30.pdf
- Description:
- IC MCU 16BIT 24KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,367
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Product details
Overview
R5F21335CDFP#30 from Renesas Electronics is a 16-bit R8C CPU core MCU with 24 KB flash program ROM, 2 KB data flash (4 × 1 KB blocks with background operation), and 2 KB RAM, operating at up to 20 MHz (VCC = 2.7–5.5 V). It integrates UART0/1/2, I²C-bus, LIN hardware module, 10-bit 12-channel ADC, dual 8-bit DACs, and four timers (RA/RB/RC/RE) for embedded control in cost-sensitive consumer and industrial systems.
For engineers reviewing the R5F21335CDFP#30 datasheet, R5F21335CDFP#30 pinout, R5F21335CDFP#30 application, or R5F21335CDFP#30 equivalent, key selection criteria include its -40°C to +85°C D-version temperature rating, 32-pin LQFP (PLQP0032GB-A) package, on-chip debug support, and BGO-enabled data flash for real-time firmware updates without halting execution.
Technical Context
The R5F21335CDFP#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 fixed interrupt vector table at 0FFDCh–0FFFFh and data flash at 03000h–03FFFh.
Peripheral integration includes three UART channels (UART0/1/2), one shared SSU/I²C interface, hardware LIN using Timer RA and UART0, and a 14-bit watchdog timer with selectable low-speed on-chip oscillator clock source - all managed via dedicated SFRs mapped to addresses 0000h–01FFh and 02C00h–02FFFh.
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 | 24 KB flash ROM + 4 KB data flash (1 KB × 4 blocks, BGO supported) + 2 KB RAM |
| Operating Temp | -40°C to +85°C (D version), enabling use in extended-temperature industrial environments |
| ADC/DAC | 10-bit 12-channel SAR ADC with sample-and-hold; dual 8-bit voltage-output DACs (DA0/DA1) |
| Timers | Timer RA (8-bit), RB (8-bit PWM), RC (16-bit with 4 capture/compare registers), RE (8-bit RTC) |
| Serial Interfaces | UART0/1/2 (UART2 supports I²C mode); one SSU/I²C shared peripheral; hardware LIN module |
| Power Modes | Standard, wait (3.5 µA @ 3.0 V, 32 kHz XCIN), and stop (2.0 µA @ 3.0 V) modes for ultra-low-power operation |
Pinout & Package
Package: 32-pin LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm pitch, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC/AVCC (Pin 7) | Power supply input | Core/analog supply: 1.8–5.5 V; AVCC requires decoupling to AVSS for ADC/DAC stability |
| VSS/AVSS (Pin 5) | Ground reference | Digital/analog ground; separate AVSS minimizes noise coupling into analog peripherals |
| XIN/XOUT (Pins 6/4) | External crystal interface | Supports 20 MHz main clock; XIN accepts ceramic resonator or crystal; XOUT provides buffered output |
| XCIN/XCOUT (Pins 32/1) | 32 kHz RTC crystal interface | Enables low-power real-time clock operation independent of main system clock |
| P0_6/P0_7 (Pins 26/25) | Analog I/O / DAC outputs | Simultaneous DA0/DA1 outputs with programmable voltage reference (VREF on Pin 1) |
| P3_7/P3_5 (Pins 8/9) | I²C-bus interface | SDA/SCL pins support standard-mode (100 kbps) and fast-mode (400 kbps) I²C communication |
| P1_0–P1_3 (Pins 24–21) | Key input interrupt pins | KI0–KI3 provide hardware debounced wake-up from low-power modes on external button press |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erasure/programming occurs concurrently with CPU execution - no code stall during firmware update |
| Hardware LIN Module | Full LIN 2.0/2.1 compliance using UART0 + Timer RA; eliminates need for external LIN transceiver in basic node designs |
| Low-Power Wait Mode | 3.5 µA current draw at 3.0 V with 32 kHz XCIN active - enables battery-powered RTC + wake-on-interrupt operation |
| On-Chip Debug Support | Fully integrated debug interface allows real-time register/memory inspection and flash rewrite without external emulator |
| Multi-Source Clock System | Four independent clocks: XIN (up to 20 MHz), XCIN (32 kHz), high-speed on-chip oscillator (adjustable), low-speed on-chip oscillator - enables dynamic clock switching for power/performance trade-offs |
Applications
| Home Appliance Control | Office Equipment Motor Drive |
|---|---|
Use Scenario: Microcontroller in washing machine main board managing water valve timing, motor phase control, and user interface feedback. IC Role / Device Role / Timing Role: Primary system controller executing real-time motor commutation logic, ADC-based current sensing, and LIN communication with display panel. Use Value: Integrated 10-bit ADC and dual DACs enable precise analog signal conditioning; BGO allows field firmware updates without interrupting wash cycles. | Use Scenario: Embedded controller in multifunction printer managing paper feed stepper motor, toner sensor interface, and USB host bridge. IC Role / Device Role / Timing Role: Central timing and I/O coordinator using Timer RC for pulse-width modulated motor drive and UART2 for USB-to-serial translation. Use Value: Hardware LIN module simplifies communication with ink cartridge ICs; 24 KB flash accommodates complex print job parsing firmware. |
| Audio System Front Panel | Industrial Sensor Node |
Use Scenario: Keypad and display controller in stereo receiver handling volume, source selection, and LED status indicators. IC Role / Device Role / Timing Role: Dedicated UI processor using KI0–KI3 for matrix keypad scanning and Timer RE for real-time clock display. Use Value: Low-power wait mode extends battery life in remote controls; built-in DACs drive analog VU meters directly without external op-amps. | Use Scenario: Wireless sensor node monitoring temperature/humidity in HVAC ducts, transmitting data via UART to gateway. IC Role / Device Role / Timing Role: Data acquisition engine sampling analog sensors via 12-channel ADC and formatting packets for RS-485 transmission. Use Value: -40°C to +85°C D-version rating ensures reliability in unconditioned environments; 2 KB RAM buffers multiple sensor readings before transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21335CNFP | Same core, memory, and peripherals but N-version (-20°C to +85°C operating range) | Suitable only for commercial indoor environments without thermal stress | Select when ambient temperature remains above -20°C and cost sensitivity outweighs extended temp requirement |
| R5F21334CDFP | 16 KB program ROM, 1.5 KB RAM, identical D-version temp rating and peripheral set | Lower memory footprint sufficient for simpler control tasks without complex UI or protocol stacks | Choose when application firmware fits within 16 KB and BGO-enabled data flash remains critical |
Compared with R5F21335CNFP, the R5F21335CDFP#30 adds guaranteed operation down to -40°C and retains full peripheral compatibility; versus R5F21334CDFP, it provides +8 KB ROM and +0.5 KB RAM for larger firmware images and runtime data structures - both alternatives require no PCB changes but differ in thermal and memory headroom.
Availability
R5F21335CDFP#30 is available at Aetrix Electronics and suitable for home appliance control, office equipment motor drive, audio system front panels, and industrial sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F21335CDFP#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, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/33C Group, including R5F21335CDFP#30, was designed for cost-optimized, low-power embedded control in consumer electronics - emphasizing integrated analog peripherals, robust EMI/EMS performance, and field-upgradable flash architecture.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F21335CDFP#30?
The R5F21335CDFP#30 operates at up to 20 MHz when supplied with 2.7–5.5 V, and supports reduced-frequency operation down to 5 MHz at 1.8 V minimum supply. This dual-voltage/frequency capability enables flexible power-performance scaling in battery- and line-powered applications alike, while maintaining full peripheral functionality across the specified range.
Does the R5F21335CDFP#30 support in-system programming and debugging?
Yes, the R5F21335CDFP#30 includes on-chip debug functionality and supports in-system flash rewriting via its dedicated debug interface. This allows firmware updates and real-time variable inspection without removing the device from the target board - a critical capability for field maintenance and iterative development of products using R5F21335CDFP#30.
How does the background operation (BGO) function work in the R5F21335CDFP#30 data flash?
The R5F21335CDFP#30's data flash supports background operation (BGO), meaning erase and program operations execute asynchronously while the CPU continues normal program execution. This is implemented via dedicated flash control logic and interrupt flags (e.g., FMRDYIF), enabling seamless firmware updates or parameter storage without halting real-time control tasks - a key advantage over non-BGO MCUs.
What peripheral interfaces are available on the R5F21335CDFP#30 for connecting to external sensors and displays?
The R5F21335CDFP#30 provides UART0/1/2 (with UART2 supporting I²C mode), a dedicated I²C-bus interface (shared with SSU), 12-channel 10-bit ADC inputs (AN0–AN11), dual 8-bit DAC outputs (DA0/DA1), and programmable CMOS I/O ports with pull-up resistors - collectively enabling direct connection to temperature/humidity sensors, OLED/LCD displays, potentiometers, and digital encoders without external level-shifting or signal conditioning.
Is the R5F21335CDFP#30 pin-compatible with other devices in the R8C/33C Group?
Yes, all R8C/33C Group MCUs, including R5F21335CDFP#30, share the identical 32-pin LQFP package (PLQP0032GB-A) and pin assignment. This allows hardware reuse across memory variants (e.g., R5F21334CDFP, R5F21336CDFP) and temperature grades (D/N versions), simplifying design scalability and inventory management while preserving layout and schematic compatibility.
R5F21335CDFP#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- R8C/3x/33C
- 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:
- 27
- Program Memory Size:
- 24KB (24K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 2K 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:
R5F21335CDFP#30 FAQ
1.How can I place an order for R5F21335CDFP#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21335CDFP#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 R5F21335CDFP#30 reliable?
The price and inventory of R5F21335CDFP#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21335CDFP#30 is usually 5 days.
3.What payment methods are accepted for R5F21335CDFP#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21335CDFP#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21335CDFP#30?
R5F21335CDFP#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21335CDFP#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 R5F21335CDFP#30?
For technical support, including R5F21335CDFP#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21335CDFP#30 requirements.
6.How does Aetrix verify that R5F21335CDFP#30 is sourced from the original manufacturer or authorized distributors?
All R5F21335CDFP#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 R5F21335CDFP#30 meets industry standards.
7.What is the process for return or replacement of R5F21335CDFP#30?
All R5F21335CDFP#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21335CDFP#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 R5F21335CDFP#30 part is unused and in its original packaging.
Return procedure for R5F21335CDFP#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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