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Renesas R5F21356CNFP#V2
- Part No.:
- R5F21356CNFP#V2
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F21356CNFP#V2.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,638
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Product details
Overview
R5F21356CNFP#V2 from Renesas Electronics is a 16-bit R8C CPU core microcontroller with 32 KB flash program ROM, 2.5 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), features a 16×16→32-bit hardware multiplier, and integrates UART0/1/2, I²C, LIN, 10-bit ×12-channel ADC, dual 8-bit DACs, and six timer modules (RA–RE + RD dual 16-bit) for motor control and real-time signal processing in consumer appliance control systems.
For engineers reviewing the R5F21356CNFP#V2 datasheet, R5F21356CNFP#V2 pinout, R5F21356CNFP#V2 application, or R5F21356CNFP#V2 equivalent, key selection criteria include its 52-pin LQFP package, -20°C to +85°C industrial temperature grade (N version), on-chip debug capability, voltage detection circuit with selectable thresholds, and low-power wait/stop modes down to 3.5 µA and 2.0 µA respectively.
Technical Context
The R5F21356CNFP#V2 implements the R8C CPU core with 89 fundamental instructions, 1-Mbyte address space, and register bank architecture supporting fast context switching. Its clock system includes four independent sources: XIN/XOUT (up to 20 MHz), XCIN/XCOUT (32 kHz), high-speed on-chip oscillator (adjustable), and low-speed on-chip oscillator - all selectable via software-controlled dividers (1/2/4/8/16).
Peripheral integration centers on deterministic real-time control: Timer RD provides complementary PWM for three-phase motor drive (6-pin output, triangular/sawtooth modulation), while the LIN module leverages Timer RA and UART0 for hardware protocol compliance. The DTC (Data Transfer Controller) supports 33 activation sources and repeat-mode transfers, enabling autonomous ADC-to-memory or UART-to-buffer operations without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 1-Mbyte address space, and 16×16→32-bit hardware multiplier for efficient math-intensive firmware. |
| Memory | 32 KB flash program ROM, 2.5 KB RAM, 4 KB data flash (1 KB × 4 blocks) with BGO for in-application reprogramming. |
| Operating Frequency | 20 MHz max (VCC = 2.7–5.5 V); 5 MHz min (VCC = 1.8–5.5 V) - enables high-speed control loops with sub-50 ns instruction timing. |
| Power Consumption | 6.5 mA typical at 5.0 V/20 MHz; 3.5 µA in wait mode (32 kHz XCIN); 2.0 µA in stop mode - critical for battery-backed or energy-conscious designs. |
| Analog Peripherals | 10-bit ×12-channel ADC with sample-and-hold and sweep mode; dual 8-bit DACs (DA0/DA1); two comparator B circuits with reference inputs. |
| Timers & Control | Timer RA–RE (8/8/16/32/8-bit), Timer RD dual 16-bit with 6-pin complementary PWM, real-time clock (Timer RE), and 14-bit watchdog timer with selectable oscillator source. |
| Communication | UART0/1/2 (UART2 supports I²C-bus mode), SSU (shared with I²C), hardware LIN module (Timer RA + UART0), and 33-source DTC for autonomous data movement. |
Pinout & Package
Package: 52-pin LQFP (PLQP0052JA-A), 10 mm × 10 mm body, 0.65 mm pitch, N-version (-20°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / AVCC | Power supply input / Analog power | Core logic and analog subsystem supply (1.8–5.5 V); separate AVCC/AVSS pins reduce noise coupling into ADC/DAC paths. |
| RESET | Reset input | Active-low asynchronous reset; initiates power-on reset sequence and clears CPU registers and peripheral states. |
| XIN / XOUT | External crystal oscillator interface | Supports 20 MHz crystal for high-precision system clock; XOUT can accept external clock if XIN is left open. |
| XCIN / XCOUT | 32 kHz crystal oscillator interface | Enables low-power real-time clock operation and ultra-low-current wait/stop modes using external 32.768 kHz crystal. |
| P0_0–P0_7 | CMOS I/O port with analog functions | 8-bit port with AN0–AN7, DA0/DA1, TREO, TRCIOx - supports simultaneous ADC sampling, DAC output, and timer waveform generation. |
| INT0–INT4 | External interrupt inputs | Dedicated edge-triggered inputs (INT0 linked to Timer RB/RC/RD) enable precise event capture and fast response to external signals. |
| UART2 pins (RXD2/SCL2/TXD2/SDA2) | Multiplexed serial interface | Single pin set supports UART, I²C master/slave, and multiprocessor communication - reduces PCB routing complexity. |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erasure/programming proceeds concurrently with CPU execution - enables seamless firmware updates without halting real-time tasks. |
| Complementary PWM on Timer RD | Hardware-synchronized 6-pin output with dead-time insertion, triangular/sawtooth modulation, and reset-synchronous operation - eliminates software timing jitter in motor gate drive. |
| Hardware LIN Module | Integrated LIN 2.0/2.1 support via Timer RA and UART0 - offloads protocol framing, checksum, and synchronization from CPU, reducing firmware overhead. |
| Low-Power Operating Modes | Wait mode (3.5 µA @ 32 kHz) and stop mode (2.0 µA) with selective peripheral wake-up - extends battery life in portable or standby-constrained applications. |
| On-Chip Debug & Flash Rewrite | Full on-chip debug interface and in-system flash programming capability - simplifies development, field updates, and production programming without external tools. |
Applications
| Home Appliance Motor Control | Office Equipment Power Management |
|---|---|
Use Scenario: Variable-speed control of BLDC motors in washing machines and air conditioners using sensorless commutation. IC Role / Device Role / Timing Role: Primary MCU executing FOC algorithms, generating complementary PWM waveforms via Timer RD, and sampling current/voltage via 10-bit ADC. Use Value: Integrated complementary PWM with dead-time control and 32-bit multiply-accumulate enable precise torque regulation at <1% ripple without external gate drivers. |
Use Scenario: Intelligent power sequencing and thermal monitoring in multifunction printers and copiers. IC Role / Device Role / Timing Role: System supervisor managing AC/DC conversion status, fan speed via PWM, and temperature sensing through ADC channels. Use Value: Voltage detection circuit with dual selectable thresholds ensures reliable brown-out protection during line fluctuations, while low-power stop mode extends sleep duration between print jobs. |
| Audio Equipment Signal Processing | Consumer Device Human Interface |
Use Scenario: Digital volume control, tone adjustment, and audio path switching in home theater receivers. IC Role / Device Role / Timing Role: Audio controller interfacing with DACs (DA0/DA1), reading encoder inputs, and driving LED displays via I/O ports. Use Value: Dual 8-bit DACs provide smooth analog output for headphone amplifiers or preamp stages; programmable pull-up resistors simplify encoder and button interface design. |
Use Scenario: Keypad scanning, display backlight control, and battery-level indication in portable media players and smart remotes. IC Role / Device Role / Timing Role: User interface manager handling KI0–KI3 key interrupts, driving LEDs via high-current I/O ports, and measuring battery voltage via ADC channel AN11. Use Value: Key input interrupt with debounce and dedicated KI pins reduce firmware polling load; 47 high-current drive ports directly sink LED current without external transistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21355CNFP | 24 KB program ROM, 2 KB RAM - 8 KB less flash and 512 B less RAM than R5F21356CNFP#V2. | Suitable for simpler control firmware with reduced feature set; insufficient for complex BGO-based OTA updates requiring >32 KB code space. | Select when cost sensitivity outweighs future firmware scalability needs and memory headroom is confirmed sufficient. |
| R5F21357CNFP | 48 KB program ROM, 4 KB RAM - 16 KB more flash and 1.5 KB more RAM than R5F21356CNFP#V2. | Required for applications integrating USB device stack, larger GUI frameworks, or multi-protocol communication stacks beyond UART/I²C/LIN. | Choose when firmware growth trajectory exceeds 32 KB or when additional RAM is needed for real-time buffering or logging. |
Compared with R5F21355CNFP and R5F21357CNFP, the R5F21356CNFP#V2 delivers optimal balance of memory resources, peripheral integration, and power efficiency for mid-tier consumer appliance control - avoiding under-provisioning while minimizing die cost and static power consumption.
Availability
R5F21356CNFP#V2 is available at Aetrix Electronics and suitable for home appliance motor control, office equipment power management, audio signal processing, and consumer device human interface applications requiring stable component supply across extended production lifecycles.
Supply support for R5F21356CNFP#V2 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 consumer markets.
The R8C/35C Group, including R5F21356CNFP#V2, was designed for cost-sensitive, high-reliability embedded control in consumer electronics - emphasizing EMI/EMS robustness, integrated analog peripherals, and ultra-low-power operation without sacrificing real-time performance.
FAQ
What is the operating temperature range for the R5F21356CNFP#V2?
The R5F21356CNFP#V2 is an N-version device rated for -20°C to +85°C ambient operating temperature. This industrial-grade specification ensures reliable operation in consumer appliance enclosures and office equipment environments where internal temperatures may exceed commercial ranges but do not reach automotive extremes. The D-version counterpart (R5F21356CDFP) extends the lower limit to -40°C.
Does the R5F21356CNFP#V2 support in-system programming of its data flash?
Yes, the R5F21356CNFP#V2 supports background operation (BGO) for data flash, allowing erase and write operations to proceed concurrently with CPU program execution. This capability enables firmware updates, parameter storage, and calibration data logging without interrupting real-time control tasks - a key requirement for appliances requiring zero-downtime field upgrades.
How many UART interfaces does the R5F21356CNFP#V2 integrate?
The R5F21356CNFP#V2 integrates three UART interfaces: UART0, UART1, and UART2. UART2 additionally supports I²C-bus mode and multiprocessor communication, providing flexible serial connectivity for debugging, sensor interfacing, and inter-module communication without requiring external level shifters or protocol translators.
What timer resources are available on the R5F21356CNFP#V2 for motor control?
The R5F21356CNFP#V2 provides Timer RD - a dual 16-bit timer with four capture/compare registers and six PWM output pins - configured for complementary PWM generation with dead-time control, sawtooth/triangular wave modulation, and reset-synchronous three-phase waveform output. This makes it suitable for direct BLDC or PMSM motor gate drive without external timers or FET drivers.
Is on-chip debug supported for the R5F21356CNFP#V2?
Yes, the R5F21356CNFP#V2 includes full on-chip debug functionality compatible with Renesas E1/E20 emulators. This enables real-time breakpoint setting, register inspection, memory read/write, and flash programming during development - eliminating the need for external debug probes and accelerating firmware validation cycles for R5F21356CNFP#V2-based designs.
R5F21356CNFP#V2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- R8C/3x/35C
- 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:
- 47
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 2.5K 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:
R5F21356CNFP#V2 FAQ
1.How can I place an order for R5F21356CNFP#V2 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21356CNFP#V2 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 R5F21356CNFP#V2 reliable?
The price and inventory of R5F21356CNFP#V2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21356CNFP#V2 is usually 5 days.
3.What payment methods are accepted for R5F21356CNFP#V2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21356CNFP#V2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21356CNFP#V2?
R5F21356CNFP#V2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21356CNFP#V2 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 R5F21356CNFP#V2?
For technical support, including R5F21356CNFP#V2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21356CNFP#V2 requirements.
6.How does Aetrix verify that R5F21356CNFP#V2 is sourced from the original manufacturer or authorized distributors?
All R5F21356CNFP#V2 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 R5F21356CNFP#V2 meets industry standards.
7.What is the process for return or replacement of R5F21356CNFP#V2?
All R5F21356CNFP#V2 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21356CNFP#V2, 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 R5F21356CNFP#V2 part is unused and in its original packaging.
Return procedure for R5F21356CNFP#V2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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