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Renesas R5F21357CNFP#30
- Part No.:
- R5F21357CNFP#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 52-LQFP
- Datasheet:
-
R5F21357CNFP#30.pdf
- Description:
- IC MCU 16BIT 48KB FLASH 52LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,266
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Product details
Overview
R5F21357CNFP#30 from Renesas Electronics is a 16-bit R8C CPU core microcontroller with 48 KB flash program ROM, 4 KB data flash (BGO-enabled), and 4 KB RAM, operating at up to 20 MHz (VCC = 2.7–5.5 V). It integrates dual UARTs, I²C, LIN hardware module, 12-channel 10-bit ADC, dual 8-bit DACs, and six timer units (RA–RE + RD dual-channel) for motor control and real-time clock functions - deployed in consumer audio equipment and office automation systems.
For engineers reviewing the R5F21357CNFP#30 datasheet, R5F21357CNFP#30 pinout, R5F21357CNFP#30 application, or R5F21357CNFP#30 equivalent, key selection criteria include its 52-pin LQFP package, -20°C to +85°C N-version temperature grade, background operation data flash, integrated LIN transceiver support via UART0+Timer RA, and low-power stop mode (2.0 µA).
Technical Context
The R5F21357CNFP#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 address space, with fixed interrupt vector table at 0FFDCh–0FFFFh and data flash blocks A–D mapped to 03000h–03FFFh.
Peripheral integration includes Timer RD with complementary PWM and three-phase waveform generation (6-pin output), hardware LIN module (UART0 + Timer RA), and DTC supporting 33 activation sources across normal and repeat transfer modes - enabling deterministic real-time response in closed-loop motor control and sensor interface applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 50 ns min instruction time @ 20 MHz |
| Memory | 48 KB program flash, 4 KB data flash (1 KB × 4 blocks, BGO supported), 4 KB RAM |
| Operating Voltage | 1.8–5.5 V - supports single-supply operation across battery and line-powered designs |
| Temperature Range | -20°C to +85°C (N version), qualified for consumer/industrial ambient environments |
| Power Consumption | Typ. 2.0 µA in stop mode (VCC = 3.0 V), enabling ultra-low-power standby in portable devices |
| Peripherals | 12-channel 10-bit ADC, dual 8-bit DACs, UART0/1/2, I²C, SSU, LIN hardware module, 6 timers |
| Package | 52-pin LQFP (PLQP0052JA-A, 10 mm × 10 mm, 0.65 mm pitch) |
Pinout & Package
52-pin LQFP package (PLQP0052JA-A), 10 mm × 10 mm body, 0.65 mm pin pitch, exposed pad not specified. Pin functions support multiplexed peripheral assignment via software configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / AVCC | Power supply input | Main and analog power rails (1.8–5.5 V); AVCC requires local decoupling for ADC/DAC accuracy |
| VSS / AVSS | Ground reference | Digital and analog ground returns - separation recommended for noise-sensitive mixed-signal operation |
| RESET | Active-low reset input | Hardware reset assertion; internal POR and voltage detection ensure reliable initialization |
| XIN / XOUT | High-frequency crystal oscillator interface | Supports 20 MHz external crystal; enables precise timing for UART baud rates and real-time control loops |
| XCIN / XCOUT | 32 kHz low-frequency crystal interface | Drives Timer RE real-time clock and low-power stop/wake functionality |
| P0_0–P0_7 | CMOS I/O port with analog inputs | 12-channel ADC inputs (AN0–AN11) and dual DAC outputs (DA0/DA1) shared on P0 pins |
| INT0–INT4 | External interrupt inputs | Edge-triggered interrupts with priority levels 0–6; INT0 linked to Timer RB/RC/RD for event synchronization |
| UART0 TXD0/RXD0 | Asynchronous serial interface | Hardware LIN physical layer implementation (with Timer RA) - no external transceiver required |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) Data Flash | Enables concurrent code execution and flash reprogramming - critical for field firmware updates without system halt |
| Hardware LIN Module | Integrated LIN 2.1 compliance via UART0 + Timer RA - reduces BOM count and PCB footprint in automotive body electronics |
| Complementary PWM (Timer RD) | 6-pin three-phase output with dead-time insertion and synchronous reset - directly drives gate drivers in BLDC motor inverters |
| Low-Power Operating Modes | Stop mode (2.0 µA), wait mode (3.5 µA), and selectable on-chip oscillators - extends battery life in portable appliances |
| Dual 8-bit DAC Outputs | Independent DA0/DA1 pins on P0_6/P0_7 - generate analog control signals for audio volume, sensor biasing, or actuator references |
Applications
| Audio Signal Processing | Office Equipment Motor Control |
|---|---|
|
Use Scenario: Digital audio mixer with analog output stage and front-panel encoder interface. IC Role / Device Role / Timing Role: Main controller executing DSP algorithms, managing UART-based remote control, and generating DAC output for headphone/line-level signals. Use Value: Integrated 12-channel ADC samples potentiometer/encoder inputs; dual DACs drive stereo audio paths; LIN module enables daisy-chain panel communication. |
Use Scenario: Laser printer paper feed and fuser temperature regulation subsystem. IC Role / Device Role / Timing Role: Real-time motion controller coordinating stepper motor sequencing (via Timer RD PWM) and thermal feedback loop (ADC + DAC). Use Value: Complementary PWM drives H-bridge drivers; 10-bit ADC monitors thermistor voltage; stop mode reduces idle power during standby. |
| Consumer Appliance UI | Industrial Sensor Hub |
|
Use Scenario: Smart washing machine control panel with touch keys, display backlight, and water level sensing. IC Role / Device Role / Timing Role: System-on-chip managing key scan (KI0–KI3), LED dimming (PWM via Timer RB), and pressure sensor ADC acquisition. Use Value: Key input interrupt (INT1–INT4) enables low-latency button response; programmable waveform generation drives variable-speed pumps. |
Use Scenario: Multi-sensor environmental monitor aggregating temperature, humidity, and CO₂ readings for building automation. IC Role / Device Role / Timing Role: Sensor fusion node performing synchronized sampling (ADC sweep mode), local calibration (data flash BGO), and UART/I²C upstream reporting. Use Value: Background flash writes store calibration coefficients during operation; I²C bus interfaces with digital sensors; low-power wait mode extends node lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21356CNFP | 32 KB program ROM, 2.5 KB RAM, same peripherals and pinout | Suitable for less complex firmware with smaller memory footprint | Select when application code size remains under 32 KB and BOM cost optimization is prioritized |
| R5F21358CNFP | 64 KB program ROM, 6 KB RAM, identical architecture and package | Required for feature-rich firmware with OTA update partitioning or larger RTOS image | Choose when future firmware expansion, bootloader space, or dual-bank updates are needed |
Compared with R5F21356CNFP and R5F21358CNFP, the R5F21357CNFP#30 provides optimal balance of memory headroom (48 KB ROM/4 KB RAM) and cost for mid-tier consumer appliance control - avoiding over-provisioning while supporting robust diagnostics and data logging in data flash.
Availability
R5F21357CNFP#30 is available at Aetrix Electronics and suitable for audio equipment, office automation systems, and consumer appliance control requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant packaging.
Supply support for R5F21357CNFP#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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.
The R8C/35C Group, including R5F21357CNFP#30, was designed for cost-sensitive, low-power embedded control in consumer electronics - emphasizing peripheral integration, EMI/EMS robustness, and seamless migration within the R8C family.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F21357CNFP#30?
The R5F21357CNFP#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. This dual-voltage capability allows deployment in both battery-powered (1.8 V minimum) and line-powered (5 V nominal) systems without level-shifting circuitry. The high-speed on-chip oscillator provides clock source flexibility when external crystals are unavailable.
Does the R5F21357CNFP#30 support hardware LIN communication, and how is it implemented?
Yes, the R5F21357CNFP#30 includes a dedicated hardware LIN module using UART0 and Timer RA to meet LIN 2.1 physical layer requirements. This eliminates the need for external LIN transceivers in basic implementations and ensures accurate bit timing, sync field detection, and checksum calculation in firmware. The module supports both master and slave roles with configurable baud rates and identifier handling.
How does the background operation (BGO) function work in the R5F21357CNFP#30 data flash?
The R5F21357CNFP#30 data flash supports background operation (BGO), allowing CPU code execution to continue uninterrupted during flash erase/write cycles. This is enabled by separating flash access arbitration between CPU and flash controller - critical for real-time systems that require firmware updates or parameter storage without halting control loops. BGO applies only to the 4 KB data flash (blocks A–D), not program ROM.
What low-power modes are available on the R5F21357CNFP#30, and what is the lowest current draw?
The R5F21357CNFP#30 offers standard operating, wait, and stop modes. In stop mode with VCC = 3.0 V and 32 kHz XCIN clock active, typical current consumption is 2.0 µA - sufficient for RTC wake-up and infrequent sensor polling. Wait mode draws 3.5 µA under the same conditions. Both modes retain RAM content and allow wake-up via external interrupt or timer event.
Can the R5F21357CNFP#30 generate complementary PWM waveforms for three-phase motor control?
Yes, Timer RD in the R5F21357CNFP#30 supports complementary PWM mode with six output pins (TRDIOA0–TRDIOC1), synchronized dead-time insertion, and three-phase waveform generation. This enables direct driving of gate drivers in BLDC or PMSM inverters without external logic. The reset-synchronous PWM variant ensures phase alignment across all three legs during commutation transitions.
R5F21357CNFP#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 52-LQFP
- Series:
- R8C/3x/35C
- 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:
- 47
- Program Memory Size:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 4K 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:
R5F21357CNFP#30 FAQ
1.How can I place an order for R5F21357CNFP#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21357CNFP#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 R5F21357CNFP#30 reliable?
The price and inventory of R5F21357CNFP#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21357CNFP#30 is usually 5 days.
3.What payment methods are accepted for R5F21357CNFP#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21357CNFP#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21357CNFP#30?
R5F21357CNFP#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21357CNFP#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 R5F21357CNFP#30?
For technical support, including R5F21357CNFP#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21357CNFP#30 requirements.
6.How does Aetrix verify that R5F21357CNFP#30 is sourced from the original manufacturer or authorized distributors?
All R5F21357CNFP#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 R5F21357CNFP#30 meets industry standards.
7.What is the process for return or replacement of R5F21357CNFP#30?
All R5F21357CNFP#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21357CNFP#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 R5F21357CNFP#30 part is unused and in its original packaging.
Return procedure for R5F21357CNFP#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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