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Renesas R5F21274JFP#U0
- Part No.:
- R5F21274JFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21274JFP#U0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,659
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Product details
Overview
R5F21274JFP#U0 from Renesas Electronics is a 16-bit R8C/27 Group single-chip microcontroller with 16 KB flash program ROM, 1 KB × 2 blocks (2 KB total) on-chip data flash, 1 KB RAM, and 32-pin LQFP (PLQP0032GB-A) packaging. It operates from -40°C to +85°C, supports 10-bit A/D conversion across 12 channels, and integrates UART0/UART1, I²C bus interface, hardware LIN module, and four 8-/16-bit timers - deployed in industrial control panels requiring deterministic real-time response and nonvolatile parameter storage.
For engineers reviewing the R5F21274JFP#U0 datasheet, R5F21274JFP#U0 pinout, R5F21274JFP#U0 application, or R5F21274JFP#U0 equivalent, key selection criteria include its J-version temperature grade (-40°C to +85°C), dual-block data flash endurance (10,000 erase/write cycles), integrated LIN physical layer support via UART0+Timer RA, and 32-pin LQFP footprint compatibility with legacy R8C/26/27 designs.
Technical Context
The R5F21274JFP#U0 implements the R8C CPU core with 89 fundamental instructions and executes at 50 ns minimum instruction time (20 MHz XIN clock, VCC = 3.0–5.5 V). Its memory architecture separates 16 KB program ROM (user-programmable before shipment) from two independent 1 KB data flash blocks - each individually erasable and programmable at VCC = 2.7–5.5 V.
Peripheral integration includes Timer RE with real-time clock capability (compare match only for J version), hardware LIN transceiver co-located on UART0 and Timer RA, and an A/D converter with internal reference voltage input (VREF) and 12 analog input channels (AN0–AN11) - all mapped to dedicated pins with configurable I/O direction registers and optional pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with 89 instructions and register bank switching |
| Flash Memory | 16 KB program ROM + 1 KB × 2 data flash (10,000 erase/write cycles per block) |
| RAM | 1 KB on-chip SRAM for variables, stack, and subroutine context |
| Operating Temperature | -40°C to +85°C (J version); validated for industrial ambient conditions |
| A/D Converter | 10-bit resolution, 12-channel input (AN0–AN11), with external VREF pin |
| Timers | Timer RA/RB (8-bit × 2), Timer RC (16-bit input capture/output compare), Timer RE (RTC + compare match) |
| Serial Interfaces | UART0/UART1 (2 channels), I²C bus interface, clock synchronous serial I/O with chip select, hardware LIN (UART0 + Timer RA) |
| Package | 32-pin LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm pitch |
Pinout & Package
32-pin molded-plastic LQFP (PLQP0032GB-A) package with exposed thermal pad; 7 mm × 7 mm body, 0.8 mm lead pitch, JEDEC MS-026 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / AVCC | Power supply input | Core and analog domain supply (2.7–5.5 V); AVCC requires decoupling to AVSS for A/D accuracy |
| P0_0–P0_7 | General-purpose I/O port | 8-bit bidirectional port with individual direction control; P0_0 also serves as TXD1 alternate function |
| AN0–AN11 | Analog input | Dedicated pins for 10-bit A/D conversion; share physical pins with P0/P1/P3 ports but functionally isolated during conversion |
| UART0 (TXD0/RXD0) | Asynchronous serial interface | Full-duplex UART channel used jointly with Timer RA for hardware LIN physical layer implementation |
| SCL / SDA | I²C bus interface | Open-drain bidirectional pins supporting standard-mode (100 kbps) and fast-mode (400 kbps) I²C communication |
| TREO | Timer RE output | Real-time clock tick or compare match pulse output; J version supports compare match only (no RTC oscillator) |
Key Features
| Feature | Design Value |
|---|---|
| Dual-block data flash | Two independent 1 KB flash blocks enable wear-leveling and background reprogramming without halting application execution |
| Hardware LIN support | Integrated LIN 2.0/2.1 physical layer via UART0 + Timer RA eliminates need for external transceiver in automotive body electronics |
| 12-channel 10-bit A/D | Simultaneous sampling not supported, but configurable trigger sources (timer, software, external) allow precise sensor acquisition timing |
| Low-power operation | 0.7 µA stop mode current (VCC = 3.0 V) enables battery-backed applications with multi-year standby life |
| J-version industrial temp grade | Qualified for -40°C to +85°C operation with full specification compliance - suitable for enclosed industrial enclosures without active cooling |
Applications
| Industrial Motor Control | Automotive Body Controller |
|---|---|
Use Scenario: Brushless DC motor commutation sequencing and fault monitoring in HVAC blowers. IC Role / Device Role / Timing Role: Real-time PWM generation via Timer RC output compare, current sensing via AN0–AN3, and LIN-based diagnostic reporting via UART0. Use Value: Dual data flash blocks store motor calibration profiles and runtime fault logs independently, enabling field firmware updates without losing operational history. |
Use Scenario: Centralized door lock actuation and window lift control in passenger vehicles. IC Role / Device Role / Timing Role: LIN slave node managing local switch inputs (KI0–KI3), driving relays via P1_0–P1_7 LED drive ports, and communicating status over hardware LIN bus. Use Value: J-version temperature rating ensures reliable operation inside door modules exposed to cabin heat soak and cold ambient extremes. |
| Smart Appliance UI Controller | Factory Automation Sensor Node |
Use Scenario: Touchless button interface and display backlight management in commercial coffee machines. IC Role / Device Role / Timing Role: Key input interrupt handling (INT0–INT3, KI0–KI3), 12-channel A/D for thermistor-based temperature monitoring, and UART1 for display module communication. Use Value: On-chip data flash retains user preferences and service counters across power cycles with guaranteed 10,000 write endurance. |
Use Scenario: Distributed vibration and temperature sensing node in predictive maintenance systems. IC Role / Device Role / Timing Role: High-precision 10-bit A/D acquisition from piezoelectric and RTD sensors, low-power wait mode activation between samples, and I²C communication to master controller. Use Value: 32-pin LQFP footprint allows compact PCB layout in space-constrained DIN-rail mounted enclosures while maintaining full peripheral access. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21274SDFP | D-version (-40°C to +85°C), same memory and peripherals, but uses PLQP0032GB-A package without #U0 suffix; no XCIN/XCOUT support | Targeted at cost-sensitive industrial equipment where external 32 kHz crystal is unnecessary | Select when board-level 32 kHz RTC clock source is omitted and factory programming is preferred over field update capability |
| R5F21264JFP | R8C/26 Group variant: identical package, CPU, and peripherals but lacks on-chip data flash (no 1 KB × 2 blocks) | Suitable for fixed-function controllers where parameter storage is handled externally via EEPROM or serial flash | Choose when nonvolatile parameter retention is managed off-chip and BOM cost reduction outweighs flash endurance and update flexibility |
Compared with R5F21274SDFP, the R5F21274JFP#U0 provides identical industrial temperature range but adds factory-trimmed oscillator calibration and #U0 tape-and-reel packaging for automated assembly. Against R5F21264JFP, it delivers critical embedded data logging capability via dual-block flash - eliminating external memory and reducing system-level failure modes.
Availability
R5F21274JFP#U0 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart appliance UI, and factory automation sensor nodes requiring stable component supply across extended product lifecycles.
Supply support for R5F21274JFP#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 industrial, automotive, and enterprise applications.
The R8C/27 Group, including R5F21274JFP#U0, was designed for cost-sensitive, real-time embedded systems requiring integrated data flash, LIN connectivity, and robust industrial temperature operation - targeting appliance, motor control, and automotive sub-system markets.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for R5F21274JFP#U0?
The R5F21274JFP#U0 achieves a minimum instruction execution time of 50 ns at 20 MHz XIN clock frequency, requiring VCC = 3.0 V to 5.5 V. It also supports lower-speed operation down to 5 MHz (200 ns min. instruction time) at VCC = 2.2 V to 5.5 V, though the J version's specified range begins at 2.7 V per electrical characteristics tables.
Does R5F21274JFP#U0 support real-time clock (RTC) functionality?
The R5F21274JFP#U0 includes Timer RE with compare match capability, but per the R8C/27 Group documentation, the J version supports compare match only - not full RTC oscillator operation. For complete RTC functionality (e.g., calendar timekeeping), the D or N versions with XCIN/XCOUT pins must be selected.
How is the data flash organized and what is its endurance rating in R5F21274JFP#U0?
The R5F21274JFP#U0 contains two independent 1 KB data flash blocks (total 2 KB), each rated for 10,000 erase/write cycles at VCC = 2.7–5.5 V. Blocks can be erased individually, enabling wear-leveling strategies and background reprogramming without application interruption.
Which pins on R5F21274JFP#U0 support hardware LIN communication?
R5F21274JFP#U0 implements hardware LIN using UART0 (TXD0/RXD0 pins) combined with Timer RA output (TRAO) for baud rate generation and synchronization. This integrated approach meets LIN 2.0/2.1 physical layer requirements without external transceiver components.
Is the R5F21274JFP#U0 pin-compatible with other R8C/27 Group MCUs in the same package?
Yes - all R8C/27 Group devices in the PLQP0032GB-A (32-pin LQFP) package, including R5F21274JFP#U0, share identical pin assignments and electrical characteristics. Memory size (16 KB vs. 32 KB) and version grade (J vs. D/K) do not affect pinout or signal mapping.
R5F21274JFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- R8C/2x/27
- 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:
- LED, POR, Voltage Detect, WDT
- Number of I/O:
- 25
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 1K 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:
R5F21274JFP#U0 FAQ
1.How can I place an order for R5F21274JFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21274JFP#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 R5F21274JFP#U0 reliable?
The price and inventory of R5F21274JFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21274JFP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21274JFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21274JFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21274JFP#U0?
R5F21274JFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21274JFP#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 R5F21274JFP#U0?
For technical support, including R5F21274JFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21274JFP#U0 requirements.
6.How does Aetrix verify that R5F21274JFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21274JFP#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 R5F21274JFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21274JFP#U0?
All R5F21274JFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21274JFP#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 R5F21274JFP#U0 part is unused and in its original packaging.
Return procedure for R5F21274JFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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