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Renesas R5F21356DNFP#V0
- Part No.:
- R5F21356DNFP#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
R5F21356DNFP#V0.pdf
- Description:
- 16-BIT, FLASH, R8C CPU
- Quantity:
- Payment:
- Shipping:
Inventory:282
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Product details
Overview
R5F21356DNFP#V0 from Renesas is a 16-bit R8C CPU core microcontroller with 32 KB flash ROM and 1 KB RAM, operating at up to 20 MHz (VCC = 2.7–5.5 V), featuring integrated 10-bit A/D converter (12 channels), UART0/UART2 (with I²C mode), four 8-/16-bit timers, watchdog timer, voltage detection, and real-time clock functionality - deployed in consumer audio equipment and office automation systems.
For engineers reviewing the R5F21356DNFP#V0 datasheet, R5F21356DNFP#V0 pinout, R5F21356DNFP#V0 application, or R5F21356DNFP#V0 equivalent, key selection criteria include its -20°C to +85°C industrial temperature grade, 52-pin LQFP package, on-chip debug support, flash endurance (1,000 write/erase cycles), and low-power wait/stop modes (3.5 µA / 2.0 µA).
Technical Context
The R5F21356DNFP#V0 implements the R8C CPU core with 89 fundamental instructions and hardware multiplier (16×16→32-bit), supporting single-chip operation across 1 Mbyte address space. Its memory map allocates 32 KB flash from 08000h–0FFFFh and 1 KB RAM from 00400h–007FFh, with fixed interrupt vector table at 0FFDCh–0FFFFh.
Peripheral integration includes UART2 with I²C-bus compatibility, dual UART interfaces, 12-channel 10-bit A/D converter with sample-and-hold and sweep mode, Timer RC with 4 capture/compare registers and PWM output on 3 pins, and dedicated real-time clock (Timer RE) for timekeeping in seconds/minutes/hours/days-of-week.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions and 16×16→32-bit hardware multiplier |
| Flash / RAM | 32 KB flash (programmable at VCC = 2.7–5.5 V); 1 KB RAM (used for data and stack) |
| Operating Speed | 20 MHz max (50 ns min instruction time at VCC = 2.7–5.5 V); 5 MHz at 1.8 V |
| A/D Converter | 10-bit resolution × 12 channels, with sample-and-hold and sweep mode for sequential conversion |
| Timers | Timer RA (8-bit), RB (8-bit PWM), RC (16-bit with 4 capture/compare registers), RE (8-bit RTC) |
| Serial Interfaces | UART0 (clock sync/UART); UART2 (clock sync/UART/I²C/multiprocessor comms) |
| Power Modes | Standard, wait (3.5 µA @ 3.0 V, 32 kHz XCIN), and stop (2.0 µA @ 3.0 V) modes |
Pinout & Package
Package: 52-pin LQFP (PLQP0052JA-A), 10 mm × 10 mm body, 0.65 mm pin pitch, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / AVCC | Power supply input | Main digital supply (1.8–5.5 V); analog reference for A/D and comparators |
| VSS / AVSS | Ground reference | Digital and analog ground planes - separate routing recommended for noise immunity |
| RESET | Reset input | Active-low asynchronous reset; initiates power-on sequence and clears CPU registers |
| XIN / XOUT | High-frequency oscillator interface | Connects to external crystal/resonator (up to 20 MHz) for main system clock generation |
| XCIN / XCOUT | Low-frequency oscillator interface | Supports 32.768 kHz crystal for RTC and low-power timing functions |
| P0_0–P0_7, P1_0–P1_7, etc. | CMOS I/O ports | 47 programmable CMOS I/O pins with software-selectable pull-up resistors and high-current drive capability |
| AN0–AN11 | Analog inputs | 12 dedicated A/D converter input channels mapped to port pins with multiplexed function assignment |
| TRCIOA–TRCIOD | Timer RC I/O | Four configurable I/O terminals for capture, compare, PWM, and trigger functions of Timer RC |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug | Full in-circuit debugging via dedicated interface - enables flash rewrite and real-time register inspection without external emulator |
| ROM code protection | Prevents unauthorized read-out of flash contents using security lock bits and ID code verification |
| EMI/EMS optimized design | Integrated layout and circuit techniques reduce radiated emissions and improve immunity in noisy consumer environments |
| Multi-source clock system | Four independent clock sources: XIN (20 MHz), XCIN (32 kHz), high-speed on-chip oscillator (adjustable), low-speed on-chip oscillator |
| Voltage detection | Dual-level voltage monitor (VDD detect + selectable VDET0/VDET1) supports power-on reset and brown-out recovery |
Applications
| Audio Equipment Control | Office Equipment Motor Control |
|---|---|
Use Scenario: Digital audio receiver managing volume, source selection, DSP configuration, and display updates. IC Role / Device Role / Timing Role: Main system controller executing real-time audio processing tasks and coordinating peripheral I/O. Use Value: Integrated UART2 with I²C mode simplifies communication with DACs, EEPROMs, and display drivers; 10-bit A/D reads front-panel potentiometers with 12-channel sweep. | Use Scenario: Laser printer engine board controlling paper feed motors, fuser temperature, and sensor feedback loops. IC Role / Device Role / Timing Role: Real-time motion and thermal management controller with deterministic interrupt latency. Use Value: Timer RC's 4 capture/compare registers enable precise PWM generation for motor phase control; RTC (Timer RE) tracks print job timestamps and maintenance intervals. |
| Consumer Appliance UI | Embedded Industrial HMI |
Use Scenario: Microwave oven control panel handling keypad scanning, cooking timer, relay actuation, and LED display. IC Role / Device Role / Timing Role: Dedicated user-interface MCU interfacing with mechanical switches, relays, and segmented displays. Use Value: Key input interrupt (KI0–KI3) supports debounced matrix scanning; low-power stop mode (2.0 µA) extends battery life in backup clock operation. | Use Scenario: Programmable logic controller (PLC) add-on module monitoring analog sensors and driving discrete outputs. IC Role / Device Role / Timing Role: Sensor acquisition and protocol translation node bridging analog field signals to serial bus networks. Use Value: 12-channel A/D with sample-and-hold captures simultaneous multi-sensor readings; UART0/UART2 support Modbus RTU and ASCII protocols over RS-485. |
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 peripherals and pinout | Lower program memory capacity limits firmware complexity and feature set scalability | Select when application firmware fits within 24 KB and cost optimization is prioritized |
| R5F21356DDFP | Same 32 KB flash and 1 KB RAM, but rated for -40°C to +85°C extended temperature range | Required for industrial or automotive-adjacent environments exceeding 85°C ambient or requiring cold-start reliability | Choose for deployments outside commercial temperature envelope where thermal robustness is mandatory |
Compared with R5F21355DNFP and R5F21356DDFP, the R5F21356DNFP offers optimal balance of memory headroom and commercial-grade temperature performance - enabling full feature implementation while maintaining cost and supply chain efficiency for office and audio OEMs.
Availability
R5F21356DNFP#V0 is available at Aetrix Electronics and suitable for audio equipment control, office automation systems, consumer appliance UIs, and embedded industrial HMIs requiring stable component supply across production lifecycles.
Supply support for R5F21356DNFP#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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/35D Group, including R5F21356DNFP#V0, was engineered for cost-sensitive, low-power embedded control in consumer electronics - emphasizing EMI resilience, integrated analog peripherals, and streamlined development with on-chip debug.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F21356DNFP#V0?
The R5F21356DNFP#V0 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. Its minimum instruction execution time is 50 ns under full-voltage, high-frequency conditions, enabling deterministic real-time response in time-critical control loops.
Does the R5F21356DNFP#V0 support I²C communication, and how is it implemented?
Yes, the R5F21356DNFP#V0 supports I²C-bus communication via UART2 configured in I²C mode. This is implemented using shared pins (SCL2/SDA2 mapped to P3_4/P3_5 or P6_6/P6_5), with dedicated I²C control registers and interrupt handling - eliminating need for external I²C hardware and reducing BOM count in sensor-interfacing designs.
How much internal flash and RAM does the R5F21356DNFP#V0 provide, and what are their usage constraints?
The R5F21356DNFP#V0 integrates 32 KB of on-chip flash ROM (address range 08000h–0FFFFh) and 1 KB of RAM (00400h–007FFh). Flash supports 1,000 program/erase cycles and includes ROM code protect and ID code check; RAM serves both data storage and stack operations during subroutine calls and interrupt servicing.
What low-power modes are available on the R5F21356DNFP#V0, and what are their typical current draws?
The R5F21356DNFP#V0 offers wait mode (3.5 µA at 3.0 V with 32 kHz XCIN active) and stop mode (2.0 µA at 3.0 V). Both retain RAM content and allow wake-up via external interrupt or RTC alarm. These modes are essential for battery-backed applications like microwave clocks or portable audio remotes where standby current directly impacts service life.
Is on-chip debug supported for the R5F21356DNFP#V0, and what capabilities does it provide?
Yes, the R5F21356DNFP#V0 includes full on-chip debug functionality accessible via dedicated debug interface. It enables real-time register and memory inspection, flash programming and erasure during development, breakpoint setting, and step-through execution - all without requiring external JTAG emulators, accelerating firmware validation and field issue resolution for R5F21356DNFP#V0-based designs.
R5F21356DNFP#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
R5F21356DNFP#V0 FAQ
1.How can I place an order for R5F21356DNFP#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21356DNFP#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 R5F21356DNFP#V0 reliable?
The price and inventory of R5F21356DNFP#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21356DNFP#V0 is usually 5 days.
3.What payment methods are accepted for R5F21356DNFP#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21356DNFP#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21356DNFP#V0?
R5F21356DNFP#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21356DNFP#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 R5F21356DNFP#V0?
For technical support, including R5F21356DNFP#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21356DNFP#V0 requirements.
6.How does Aetrix verify that R5F21356DNFP#V0 is sourced from the original manufacturer or authorized distributors?
All R5F21356DNFP#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 R5F21356DNFP#V0 meets industry standards.
7.What is the process for return or replacement of R5F21356DNFP#V0?
All R5F21356DNFP#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21356DNFP#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 R5F21356DNFP#V0 part is unused and in its original packaging.
Return procedure for R5F21356DNFP#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F21356DNFP#V0 Tags
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