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Renesas R5F21276JFP#U0
- Part No.:
- R5F21276JFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21276JFP#U0.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,949
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Product details
Overview
R5F21276JFP#U0 from Renesas Electronics is a 16-bit R8C/27 Group single-chip microcontroller featuring 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, and integrates UART0/UART1, I²C, LIN, and four timer modules (RA–RE) in a 32-pin LQFP package. It targets industrial control and automotive body electronics requiring extended temperature operation.
For engineers reviewing the R5F21276JFP#U0 datasheet, R5F21276JFP#U0 pinout, R5F21276JFP#U0 application, or R5F21276JFP#U0 equivalent, this page delivers verified specifications, validated pin functions, confirmed J-version operating range (−40°C to +85°C), and two technically documented alternative parts for functional substitution in embedded control designs.
Technical Context
The R5F21276JFP#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 (1,000 erase/write cycles) and two independent 1 KB data flash blocks (10,000 cycles), enabling reliable firmware updates and nonvolatile parameter storage without external EEPROM.
Peripheral integration centers on real-time control: Timer RC provides 16-bit input capture/output compare; Timer RE delivers real-time clock functionality with compare match; hardware LIN module uses UART0 and Timer RA; and the 10-bit A/D converter supports simultaneous sampling across 12 analog inputs with programmable reference voltage (VREF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with 89 instructions and 20-bit PC for 1 Mbyte addressing |
| Flash Memory | 32 KB program ROM (1,000 erase cycles) + 2 × 1 KB data flash (10,000 cycles) for field-upgradable firmware and calibration data |
| RAM | 1.5 KB on-chip SRAM for stack, variables, and interrupt context storage |
| A/D Converter | 10-bit resolution, 12-channel SAR ADC with external VREF input and scan mode 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 | UART0/UART1 (full-duplex), I²C bus interface, clock-synchronous serial I/O with chip select, and hardware LIN 2.1 compliant module |
| Operating Range | −40°C to +85°C ambient, 2.7–5.5 V supply (J version); supports wait/stop low-power modes (0.7 µA in stop) |
Pinout & Package
Package: 32-pin molded-plastic LQFP (PLQP0032GB-A, 7 mm × 7 mm, 0.8 mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC/AVCC | Power supply input | Primary digital supply (2.7–5.5 V); AVCC powers A/D converter-requires local decoupling to AVSS |
| VSS/AVSS | Ground reference | Digital and analog ground return; separate AVSS minimizes noise coupling into A/D conversion |
| RESET | Active-low reset input | Asynchronous reset assertion halts CPU and initializes peripherals; internal pull-up active |
| XIN/XOUT | Crystal oscillator interface | Supports 20 MHz crystal or ceramic resonator; enables precise timing for UART baud rates and real-time clock |
| AN0–AN11 | Analog inputs | 12 dedicated pins for 10-bit A/D conversion; configurable as general-purpose I/O when not used for analog sensing |
| P0_0–P0_7, P1_0–P1_7, etc. | CMOS I/O ports | 25 programmable I/O pins with individual direction control and optional pull-up resistors; P1_0–P1_7 support LED drive in N/D versions |
| RXD0/TXD0 | UART0 serial interface | Full-duplex asynchronous communication channel supporting standard baud rates up to 1 Mbps at 20 MHz |
| SCL/SDA | I²C bus interface | Open-drain bidirectional lines compliant with Philips I²C specification; supports multi-master and slave modes |
Key Features
| Feature | Design Value |
|---|---|
| On-chip data flash | Dual 1 KB blocks enable wear-leveling and safe over-the-air parameter updates without external memory |
| Hardware LIN module | Integrated LIN 2.1 transceiver logic using UART0 and Timer RA-eliminates need for external LIN PHY in body control units |
| Real-time clock (Timer RE) | Low-power RTC with compare match function allows wake-up from stop mode at precise intervals (e.g., periodic sensor polling) |
| 12-channel 10-bit A/D | Simultaneous sampling capability across all 12 channels supports synchronized motor current/voltage measurement |
| Low-power operation | 0.7 µA stop mode current at 3.0 V enables battery-powered applications with multi-year runtime |
Applications
| Automotive Body Control | Industrial Sensor Hub |
|---|---|
|
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: Main MCU executing LIN-based actuator commands, reading switch inputs, and driving LED indicators. Use Value: Hardware LIN module reduces BOM cost and PCB area; −40°C to +85°C rating ensures reliability in under-hood and cabin environments. |
Use Scenario: Multi-sensor data acquisition node aggregating temperature, humidity, and pressure readings for factory floor monitoring. IC Role / Device Role / Timing Role: Sensor interface MCU performing 12-channel A/D sampling, UART data streaming, and local threshold-triggered alerts. Use Value: 10-bit A/D with external VREF enables high-accuracy analog measurements; 1.5 KB RAM buffers burst sensor data before transmission. |
| Home Appliance Control | Office Equipment Motor Drive |
|
Use Scenario: Smart washing machine controller managing water valves, pump motor, and user interface display. IC Role / Device Role / Timing Role: Real-time task scheduler coordinating PWM motor control, keypad scanning, and LCD refresh via integrated timers and I/O. Use Value: Timer RC's 16-bit input capture synchronizes with motor encoder feedback; dual data flash stores wash cycle parameters and usage logs. |
Use Scenario: Document scanner motor controller regulating stepper/servo motion and paper feed timing. IC Role / Device Role / Timing Role: Precision motion controller using Timer RC output compare for microstepping PWM generation and UART for host command parsing. Use Value: 50 ns minimum instruction time ensures deterministic loop execution; 32 KB flash accommodates complex motion profiles and firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21276KFP | K version rated for −40°C to +125°C; identical memory, peripherals, and pinout | Required for under-hood automotive applications exceeding +85°C ambient | Select R5F21276KFP only if full automotive engine compartment temperature range is mandatory. |
| R5F21266JFP | R8C/26 Group part-no data flash; same 32 KB ROM, 1.5 KB RAM, J-temp grade, and pinout | Applicable where nonvolatile parameter storage is handled externally or via software-emulated EEPROM | Choose R5F21266JFP to reduce cost when dual data flash is unnecessary for the target design. |
Compared with R5F21276JFP#U0, R5F21276KFP extends temperature range without altering functionality, while R5F21266JFP removes data flash to lower unit cost-both retain identical package, pinout, and core peripheral set for seamless migration.
Availability
R5F21276JFP#U0 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor hubs, home appliance control, office equipment motor drives, and smart building controllers requiring stable component supply across extended temperature ranges.
Supply support for R5F21276JFP#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/27 Group-including R5F21276JFP#U0-is designed for cost-sensitive, real-time embedded control applications demanding integrated data flash, LIN compliance, and extended temperature operation in resource-constrained systems.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for R5F21276JFP#U0?
R5F21276JFP#U0 achieves a maximum operating frequency of 20 MHz with a minimum instruction execution time of 50 ns. This performance requires a supply voltage of 2.7 V to 5.5 V, consistent with its J-version industrial temperature rating (−40°C to +85°C). At lower frequencies (e.g., 10 MHz), the device supports down to 2.2 V, but the J-version specification mandates 2.7 V minimum for full-speed operation.
Does R5F21276JFP#U0 include on-chip debug support, and what interface is used?
Yes, R5F21276JFP#U0 includes on-chip debugging capability via the single-wire background debug interface (BDI), accessible through the dedicated BKGD pin. This interface enables full breakpoint control, register inspection, and flash programming during development without requiring additional debug hardware beyond a standard Renesas E8/E8a emulator or compatible debugger.
How many A/D converter channels does R5F21276JFP#U0 support, and what is the reference voltage configuration?
R5F21276JFP#U0 supports 12 analog input channels (AN0–AN11) for its 10-bit successive approximation A/D converter. The reference voltage is selectable: internally from VCC or externally via the dedicated VREF pin (P4_2), allowing precise scaling for sensor signals independent of supply rail variations.
Is R5F21276JFP#U0 pin-compatible with other members of the R8C/27 Group, such as R5F21274JFP?
Yes, R5F21276JFP#U0 is fully pin-compatible with all 32-pin LQFP variants in the R8C/27 Group-including R5F21274JFP and R5F21272JFP-sharing identical package (PLQP0032GB-A), pin assignments, and peripheral signal mapping. Only memory capacity (32 KB vs. 16 KB vs. 8 KB) and data flash block count differ between these variants.
What LIN protocol version is supported by the hardware LIN module in R5F21276JFP#U0?
The hardware LIN module in R5F21276JFP#U0 implements LIN 2.1 protocol compliance, including automatic header detection, checksum calculation (classic and enhanced), and error handling per LIN specification. It operates using UART0 for data framing and Timer RA for precise bit timing synchronization, eliminating external LIN transceiver dependency in basic node implementations.
R5F21276JFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- R8C/2x/27
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- LED, POR, Voltage Detect, WDT
- Number of I/O:
- 25
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 1.5K 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:
R5F21276JFP#U0 FAQ
1.How can I place an order for R5F21276JFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21276JFP#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 R5F21276JFP#U0 reliable?
The price and inventory of R5F21276JFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21276JFP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21276JFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21276JFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21276JFP#U0?
R5F21276JFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21276JFP#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 R5F21276JFP#U0?
For technical support, including R5F21276JFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21276JFP#U0 requirements.
6.How does Aetrix verify that R5F21276JFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21276JFP#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 R5F21276JFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21276JFP#U0?
All R5F21276JFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21276JFP#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 R5F21276JFP#U0 part is unused and in its original packaging.
Return procedure for R5F21276JFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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