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Renesas R5F21356DNFP#30
- Part No.:
- R5F21356DNFP#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F21356DNFP#30.pdf
- Description:
- R8C/35D 32K/1K 52LQFP 10X10
- Quantity:
- Payment:
- Shipping:
Inventory:2,185
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Product details
Overview
R5F21356DNFP#30 from Renesas Electronics is a 16-bit R8C CPU core MCU with 32 KB Flash ROM, 1 KB RAM, 52-pin LQFP package, and operating temperature range of -20°C to +85°C. It integrates UART0/UART2 (with I²C mode), 10-bit 12-channel ADC, four 8-/16-bit timers, watchdog timer, voltage detection, and low-power wait/stop modes. It targets embedded control in consumer audio and office equipment.
For engineers reviewing the R5F21356DNFP#30 datasheet, R5F21356DNFP#30 pinout, R5F21356DNFP#30 application, or R5F21356DNFP#30 equivalent, key selection criteria include Flash size (32 KB), 52-pin PLQP0052JA-A package compatibility, -20°C to +85°C industrial grade rating, integrated I²C-capable UART2, and real-time clock (Timer RE) support for timekeeping functions.
Technical Context
The R5F21356DNFP#30 implements the R8C CPU core with 89 fundamental instructions and hardware multiplier (16×16→32-bit), enabling efficient signal processing and control loops. Its memory map allocates 32 KB Flash from 08000h–0FFFFh and 1 KB RAM from 00400h–007FFh within a 1 Mbyte address space.
Peripheral integration includes dual UARTs (UART0 with basic async, UART2 supporting clock-sync I/O, I²C-bus, and multiprocessor mode), Timer RC with 4 capture/compare registers and PWM2 output, and A/D converter with sample-and-hold and sweep mode-enabling sensor interfacing and closed-loop analog feedback without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions; enables compact code footprint and deterministic timing for real-time control. |
| Flash / RAM | 32 KB Flash (08000h–0FFFFh), 1 KB RAM (00400h–007FFh); sufficient for mid-complexity firmware with data buffering. |
| Operating Voltage | 1.8 V to 5.5 V; supports direct interface with 3.3 V or 5 V logic and battery-powered operation down to 1.8 V. |
| Max Clock Speed | 20 MHz at VCC ≥ 2.7 V; delivers 50 ns min instruction execution time for responsive system control. |
| A/D Converter | 10-bit resolution × 12 channels with sample-and-hold and sweep mode; allows simultaneous multi-sensor acquisition in single trigger sequence. |
| Timers | Timer RA (8-bit), RB (8-bit PWM), RC (16-bit w/ 4 CC regs), RE (8-bit RTC); supports motor control, pulse measurement, and calendar timekeeping. |
| Serial Interfaces | UART0 (async), UART2 (async/I²C/multiprocessor); enables host communication, sensor bus connectivity, and distributed system coordination. |
| Power Modes | Wait mode (3.5 µA @ 3.0 V, 32 kHz XCIN), stop mode (2.0 µA); extends battery life in standby without losing RAM state. |
Pinout & Package
Package: 52-pin LQFP (PLQP0052JA-A), 10 mm × 10 mm body, 0.65 mm pin pitch, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / AVCC | Power supply input / Analog reference | Dual power domains isolate digital noise from ADC accuracy; requires separate decoupling per datasheet layout guidelines. |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers and initializes peripherals; pulled high externally via resistor per MODE pin requirement. |
| XIN / XOUT | External crystal oscillator interface | Supports 20 MHz max crystal; enables precise timing for UART baud generation and real-time control loops. |
| XCIN / XCOUT | 32 kHz crystal interface | Feeds low-power real-time clock (Timer RE) and stop-mode wake-up source independent of main clock domain. |
| P0_0–P0_7, P1_0–P1_7, etc. | CMOS I/O ports (47 total) | All 47 pins configurable as input/output with software-selectable pull-up; high-current drive capability simplifies LED or relay direct drive. |
| AN0–AN11 | Analog inputs to A/D converter | 12 dedicated pins with shared functionality (e.g., P0_0/AN7/TRCIOA); enable flexible PCB routing for mixed-signal designs. |
| UART2 pins (RXD2/SCL2/TXD2/SDA2) | Multiplexed serial interface | Single pin set supports UART, I²C master/slave, or multiprocessor sync-reducing pin count while increasing protocol flexibility. |
Key Features
| Feature | Design Value |
|---|---|
| R8C CPU with hardware multiplier | Enables fast 16×16-bit multiply-accumulate operations critical for digital filtering and motor control algorithms. |
| Integrated voltage detection (VDD monitor) | Provides programmable reset and interrupt on brown-out, eliminating need for external supervisor IC in cost-sensitive designs. |
| Real-time clock (Timer RE) | Hardware calendar counter (sec/min/hr/day-of-week) with compare output-reduces firmware overhead for time-stamped events. |
| I²C-capable UART2 peripheral | Eliminates dedicated I²C controller; allows same pins to serve as UART or I²C bus, conserving I/O in space-constrained layouts. |
| Low EMI/EMS design | Optimized internal routing and clock gating reduce radiated emissions and improve immunity-critical for CE/FCC compliance in consumer appliances. |
| On-chip debug and flash rewrite | Enables field firmware updates and real-time debugging without external JTAG emulator, lowering development and service costs. |
Applications
| Audio Equipment Control | Office Equipment Motor Control |
|---|---|
Use Scenario: Volume, tone, and input source selection in portable Bluetooth speakers and home audio receivers. IC Role / Device Role / Timing Role: Main system controller executing UI logic, managing DAC/ADC interfaces, and coordinating Bluetooth stack timing via UART0. Use Value: Integrated 12-channel ADC reads potentiometer and sensor inputs; UART2 in I²C mode communicates with display driver and EEPROM for settings storage. | Use Scenario: Paper feed, jam detection, and print head positioning in multifunction printers and scanners. IC Role / Device Role / Timing Role: Real-time motion controller using Timer RB PWM outputs to drive stepper motor drivers and Timer RC for precise pulse-width modulation. Use Value: 16-bit Timer RC with 4 capture/compare registers enables synchronized multi-axis timing; low-power stop mode reduces energy use during idle periods. |
| Consumer Appliance User Interface | Industrial Panel Meter Front-End |
Use Scenario: Keypad scanning, LCD backlight dimming, and temperature monitoring in microwave ovens and washing machines. IC Role / Device Role / Timing Role: Embedded controller handling key input interrupts (KI0–KI3), driving LED segments via high-current I/O, and sampling thermistor via ADC. Use Value: Key input interrupt capability (9 external INT sources) ensures immediate response to user presses; 10-bit ADC resolves ±0.5°C temperature changes over full range. | Use Scenario: Analog sensor signal conditioning, digital display update, and communication with PLC via RS-485 transceiver in DIN-rail mounted meters. IC Role / Device Role / Timing Role: Signal acquisition node converting 4–20 mA or 0–10 V inputs via ADC, formatting data, and transmitting via UART0 with external level shifter. Use Value: 12-channel ADC supports multiple sensor inputs; UART0's programmable baud rate generator ensures reliable 9600–115200 bps RS-485 communication across temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21355DNFP | 24 KB Flash, same 1 KB RAM, identical pinout and peripheral set. | Suitable where firmware size remains under 24 KB; no change to PCB or driver layer required. | Select when firmware image size permits reduction to save cost without sacrificing feature set. |
| R5F21356DDFP | Same 32 KB Flash and peripherals, but rated for -40°C to +85°C extended temperature range. | Required for automotive cabin modules or outdoor industrial enclosures where ambient exceeds 85°C or drops below -20°C. | Choose for harsh-environment deployments; verify thermal derating of external components matches D-version spec. |
Compared with R5F21356DNFP#30, R5F21355DNFP offers lower Flash capacity at reduced cost for simpler firmware, while R5F21356DDFP extends operational reliability to wider temperature extremes-both retain identical peripheral functionality and software compatibility.
Availability
R5F21356DNFP#30 is available at Aetrix Electronics and suitable for audio equipment control, office equipment motor control, and consumer appliance user interface applications requiring stable component supply and long-term production continuity.
Supply support for R5F21356DNFP#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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/35D Group, including R5F21356DNFP#30, was designed for cost-sensitive, low-power embedded control in consumer electronics-emphasizing integration, EMI robustness, and ease of certification in household and office environments.
FAQ
What is the maximum operating frequency of the R5F21356DNFP#30?
The R5F21356DNFP#30 operates at up to 20 MHz when supplied with VCC ≥ 2.7 V. At this frequency, its minimum instruction execution time is 50 ns. When VCC is as low as 1.8 V, the maximum supported frequency drops to 5 MHz to maintain stability-ensuring reliable operation across wide input voltage ranges typical in battery-powered or unregulated supply systems.
Does the R5F21356DNFP#30 support I²C communication?
Yes, the R5F21356DNFP#30 supports I²C communication through UART2 configured in I²C mode. Pins P3_4 (SCL2), P3_3 (SDA2), and associated control registers (U2MR, U2C0) enable full I²C master and slave functionality-including clock stretching and arbitration. This eliminates the need for a separate I²C controller IC in designs requiring sensor or display bus connectivity.
What is the purpose of the XCIN/XCOUT pins on the R5F21356DNFP#30?
The XCIN/XCOUT pins on the R5F21356DNFP#30 connect to a 32.768 kHz crystal to provide a low-frequency clock source for Timer RE (real-time clock) and low-power stop/wait modes. This allows accurate timekeeping and wake-up from ultra-low-power states (as low as 2.0 µA) without relying on the main high-speed oscillator-extending battery life in portable or energy-conscious applications.
How much Flash memory does the R5F21356DNFP#30 have, and is it reprogrammable?
The R5F21356DNFP#30 contains 32 KB of on-chip Flash memory, organized from address 08000h to 0FFFFh. It supports in-system programming via on-chip debug interface, with 1,000 program/erase cycles endurance and ROM code protection features. This enables field firmware updates and secure IP protection without requiring external programming hardware.
Can the R5F21356DNFP#30 operate from a 1.8 V supply?
Yes, the R5F21356DNFP#30 supports operation from 1.8 V to 5.5 V. At 1.8 V, the maximum operating frequency is 5 MHz with corresponding 200 ns minimum instruction execution time. All peripherals-including ADC, timers, and UARTs-remain fully functional within this voltage range, making it suitable for single-cell Li-ion or alkaline battery-powered devices.
R5F21356DNFP#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- R8C/3x/35D
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- 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:
- 47
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21356DNFP#30 FAQ
1.How can I place an order for R5F21356DNFP#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21356DNFP#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 R5F21356DNFP#30 reliable?
The price and inventory of R5F21356DNFP#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21356DNFP#30 is usually 5 days.
3.What payment methods are accepted for R5F21356DNFP#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21356DNFP#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21356DNFP#30?
R5F21356DNFP#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21356DNFP#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 R5F21356DNFP#30?
For technical support, including R5F21356DNFP#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21356DNFP#30 requirements.
6.How does Aetrix verify that R5F21356DNFP#30 is sourced from the original manufacturer or authorized distributors?
All R5F21356DNFP#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 R5F21356DNFP#30 meets industry standards.
7.What is the process for return or replacement of R5F21356DNFP#30?
All R5F21356DNFP#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21356DNFP#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 R5F21356DNFP#30 part is unused and in its original packaging.
Return procedure for R5F21356DNFP#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F21356DNFP#30 Tags
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