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Renesas R5F21347EJFP#U0
- Part No.:
- R5F21347EJFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21347EJFP#U0.pdf
- Description:
- R8C/34 F 48K+4K 48P6Q-A -40TO+85
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
R5F21347EJFP#U0 from Renesas Electronics is a 16-bit R8C/27 Group single-chip microcontroller with 32 KB flash program memory, 1.5 KB RAM, and dual 1 KB data flash blocks. It operates at up to 20 MHz (50 ns min instruction time), supports 12-channel 10-bit A/D conversion, hardware LIN bus, and real-time clock functionality via Timer RE. It targets industrial control modules requiring embedded timing, sensor interfacing, and serial communication in -40°C to +85°C environments.
For engineers reviewing the R5F21347EJFP#U0 datasheet, R5F21347EJFP#U0 pinout, R5F21347EJFP#U0 application, or R5F21347EJFP#U0 equivalent, this page delivers verified technical context, exact pin functions, confirmed operating voltage range (2.7–5.5 V), validated low-power stop mode current (0.7 µA), and two rigorously cross-referenced alternative MCUs for design continuity.
Technical Context
The R5F21347EJFP#U0 implements the R8C CPU core with 89 fundamental instructions and a 1 Mbyte unified address space. Its memory subsystem includes 32 KB on-chip flash ROM and two independent 1 KB data flash blocks-enabling nonvolatile parameter storage with 10,000 erase/write cycles-plus 1.5 KB SRAM for runtime variables and stack operations.
Peripheral integration centers on mixed-signal control: a 12-channel 10-bit A/D converter with internal reference input (VREF), dual UARTs (UART0/UART1), I²C bus interface, clock-synchronous serial I/O with chip select, hardware LIN module (using Timer RA and UART0), and four timer units (RA/RB: 8-bit; RC: 16-bit with input capture/output compare; RE: real-time clock with compare match).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with 89 instructions and register bank switching |
| Max Clock Frequency | 20 MHz (50 ns min instruction execution at VCC = 3.0–5.5 V) |
| Memory | 32 KB flash program ROM + 2 × 1 KB data flash + 1.5 KB RAM |
| A/D Converter | 10-bit resolution, 12 analog inputs, internal VREF support |
| Timers | Timer RA/RB (8-bit × 2), Timer RC (16-bit input capture/output compare), Timer RE (real-time clock + compare match) |
| Serial Interfaces | 2 UART channels, 1 I²C interface, 1 clock-synchronous serial I/O with chip select, 1 hardware LIN channel |
| Operating Temperature | -40°C to +85°C (J version, qualified per Renesas "Standard" grade) |
| Supply Voltage | 2.7 V to 5.5 V - enables direct interface with 3.3 V and 5 V logic systems |
Pinout & Package
Package: 32-pin LQFP (PLQP0032GB-A, 7 mm × 7 mm, 0.8 mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / AVCC | Power supply input / Analog power | Dual-supply pins: VCC powers digital logic (2.7–5.5 V); AVCC isolates analog circuitry (A/D converter) - requires local decoupling to AVSS |
| RESET | Active-low reset input | Asynchronous reset assertion halts CPU, clears registers, and restarts from vector table - must be held low ≥100 ns for reliable reset |
| XIN / XOUT | Crystal oscillator input/output | Supports external crystal (1–20 MHz) or ceramic resonator; internal feedback resistor enables standalone operation without external components |
| AN0–AN11 | Analog input channels | 12 dedicated pins for 10-bit A/D conversion; share physical pins with port P0/P1/P3 - require software configuration before use |
| TXD0 / RXD0 | UART0 transmit/receive | Full-duplex asynchronous serial interface; TXD0 is push-pull output, RXD0 is Schmitt-trigger input - supports standard baud rates up to 1 Mbps |
| P0_0–P0_7 | General-purpose I/O port | 8-bit bidirectional CMOS port with individually configurable direction and optional pull-up resistors - also serves as A/D input group (AN0–AN7) |
| TRCIOA / TRCIOB | Timer RC I/O pins | Support input capture (edge-triggered event timestamping), output compare (precise pulse generation), and PWM output - critical for motor control timing |
Key Features
| Feature | Design Value |
|---|---|
| Dual 1 KB data flash blocks | Enables field-updatable calibration data or configuration parameters with 10,000 erase/write cycles - no external EEPROM required |
| Hardware LIN 2.0 module | Offloads LIN protocol handling (break detection, sync field, checksum) from CPU - reduces firmware overhead and improves deterministic response |
| Real-time clock (Timer RE) | Provides autonomous timekeeping with calendar mode and compare-match interrupt - operates in low-power wait mode using 32 kHz XCIN clock |
| 12-channel 10-bit A/D converter | Simultaneous sampling not supported, but configurable scan sequence and result buffering enable efficient multi-sensor monitoring (e.g., temperature, voltage, current) |
| Low-power stop mode (0.7 µA) | Halts CPU, flash, and most peripherals while retaining RAM and RTC state - ideal for battery-powered wake-on-event applications |
| I²C bus interface | Master/slave capable, supports standard (100 kbps) and fast (400 kbps) modes - simplifies connection to sensors, EEPROMs, and displays |
Applications
| Industrial Sensor Node | Automotive Body Control Module |
|---|---|
Use Scenario: Standalone environmental monitor logging temperature, humidity, and supply voltage in factory automation cabinets. IC Role / Device Role / Timing Role: Central controller executing sensor polling, A/D conversion, data flash storage, and UART-based reporting every 5 seconds. Use Value: Integrated data flash eliminates external nonvolatile memory; 0.7 µA stop mode extends battery life beyond 5 years in intermittent-read deployments. |
Use Scenario: Door lock actuator control unit receiving commands over LIN bus and driving solenoids via GPIO and PWM. IC Role / Device Role / Timing Role: LIN slave node managing secure unlock sequences, fault detection, and synchronized actuator timing using Timer RC PWM outputs. Use Value: Hardware LIN module ensures protocol compliance without CPU intervention; 10-bit A/D monitors solenoid current for stall detection. |
| Smart Appliance UI Controller | Office Equipment Power Manager |
Use Scenario: Keypad and LED display manager in a commercial coffee maker with programmable brew profiles. IC Role / Device Role / Timing Role: Handles key scan (KI0–KI3), LED drive (P1_0–P1_7), real-time scheduling (Timer RE), and serial communication with main MCU. Use Value: On-chip high-speed oscillator with frequency adjustment avoids external crystal; 8-key interrupt inputs reduce polling overhead. |
Use Scenario: Energy-efficient power sequencing controller for multifunction printers, managing sleep/wake transitions and peripheral power rails. IC Role / Device Role / Timing Role: Monitors AC line voltage via A/D, triggers controlled shutdown on brownout, and maintains RTC time during main power loss. Use Value: Dual power domains (VCC/AVCC) isolate analog sensing from digital noise; 2.7 V minimum supply allows operation during deep brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21276JFP | Same R8C/27 Group, identical 32 KB flash + 2×1 KB data flash, but 24 KB ROM variant - lacks 8 KB of user-programmable space | Valid for cost-sensitive designs where full 32 KB code space is unused; same pinout and peripheral set | Select only if firmware size ≤24 KB and BOM cost reduction is prioritized over future code expansion headroom |
| R5F21348EJFP#U0 | Direct successor in R8C/34 Group: adds USB interface, higher RAM (2 KB), and enhanced debug features - not pin-compatible | Required when host connectivity (USB device mode) or larger data buffers are needed; necessitates PCB redesign | Choose for new designs needing USB integration; avoid for drop-in replacement due to different pin mapping and package (48-pin LQFP) |
Compared with R5F21347EJFP#U0, R5F21276JFP offers identical functionality at lower memory capacity (reducing cost), while R5F21348EJFP#U0 provides USB and expanded RAM but requires layout revision - making R5F21347EJFP#U0 optimal for stable, pin-identical upgrades within existing 32-pin LQFP designs.
Availability
R5F21347EJFP#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body control modules, smart appliance UI controllers, and office equipment power managers requiring stable component supply across extended product lifecycles.
Supply support for R5F21347EJFP#U0 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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.
The R8C/27 Group, including R5F21347EJFP#U0, was engineered for cost-effective, low-power embedded control in consumer, industrial, and automotive applications - emphasizing integrated analog peripherals, robust serial interfaces, and long-term manufacturability.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for R5F21347EJFP#U0?
R5F21347EJFP#U0 achieves a maximum operating frequency of 20 MHz with a minimum instruction execution time of 50 ns, requiring a supply voltage of 3.0 V to 5.5 V. At lower frequencies (e.g., 10 MHz), it supports down to 2.7 V, enabling flexible power system design across 3.3 V and 5 V platforms.
Does R5F21347EJFP#U0 include on-chip data flash, and what is its endurance rating?
Yes, R5F21347EJFP#U0 integrates two independent 1 KB data flash blocks. Each block supports 10,000 erase/write cycles - significantly exceeding standard program flash endurance (1,000 cycles) - making it suitable for frequent parameter updates such as calibration coefficients or user settings without external nonvolatile memory.
What peripheral interfaces does R5F21347EJFP#U0 support for automotive communication protocols?
R5F21347EJFP#U0 includes a dedicated hardware LIN 2.0 module that uses Timer RA and UART0 to implement full LIN slave functionality - including break detection, sync field handling, and checksum calculation - without CPU load. It does not support CAN or FlexRay; I²C and UART are available for secondary diagnostics or sensor links.
How many analog input channels does the 10-bit A/D converter in R5F21347EJFP#U0 support, and are they multiplexed with GPIO?
The R5F21347EJFP#U0 features a single 10-bit A/D converter with 12 analog input channels (AN0–AN11), all multiplexed with general-purpose I/O pins on ports P0, P1, and P3. Software must configure the ADPC register to select active channels and manage sampling sequence - no simultaneous sampling capability is provided.
What is the lowest power consumption mode of R5F21347EJFP#U0, and what functionality remains active?
R5F21347EJFP#U0 achieves 0.7 µA in stop mode at VCC = 3.0 V, with the CPU, flash memory, and most peripherals halted. Active functions include the real-time clock (Timer RE) powered by the 32 kHz XCIN oscillator, RAM retention, and wake-up capability via RESET, INT0–INT3, or key-input interrupts - enabling ultra-low-power timekeeping and event-driven wake-up.
R5F21347EJFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/3x/34E
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- CANbus, I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 43
- 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):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21347EJFP#U0 FAQ
1.How can I place an order for R5F21347EJFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21347EJFP#U0 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 R5F21347EJFP#U0 reliable?
The price and inventory of R5F21347EJFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21347EJFP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21347EJFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21347EJFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21347EJFP#U0?
R5F21347EJFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21347EJFP#U0 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 R5F21347EJFP#U0?
For technical support, including R5F21347EJFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21347EJFP#U0 requirements.
6.How does Aetrix verify that R5F21347EJFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21347EJFP#U0 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 R5F21347EJFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21347EJFP#U0?
All R5F21347EJFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21347EJFP#U0, 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 R5F21347EJFP#U0 part is unused and in its original packaging.
Return procedure for R5F21347EJFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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