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Renesas R5F2122AJFP#W4
- Part No.:
- R5F2122AJFP#W4
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F2122AJFP#W4.pdf
- Description:
- MCU-R8C 22-FLASH
- Quantity:
- Payment:
- Shipping:
Inventory:1,881
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Product details
Overview
R5F2122AJFP#W4 from Renesas Electronics is a 16-bit R8C/22 Group microcontroller built on silicon gate CMOS, featuring the R8C CPU core, 96 KB flash program memory, 5 KB RAM, and integrated CAN 2.0B (16-slot) and LIN modules - designed for automotive and factory automation networking applications.
For engineers reviewing the R5F2122AJFP#W4 datasheet, R5F2122AJFP#W4 pinout, R5F2122AJFP#W4 application, or R5F2122AJFP#W4 equivalent, this MCU delivers deterministic real-time control with 10-bit ADC (12 channels), dual UARTs, I²C, and timer peripherals - all in a 48-pin LQFP package rated for −40°C to +85°C operation.
Technical Context
The R5F2122AJFP#W4 implements the R8C CPU core with 89 fundamental instructions and executes at 50 ns minimum instruction time (20 MHz XIN, 3.0–5.5 V). It supports single-chip operation with 1 Mbyte unified address space, fixed interrupt vector table at 0FFDCh–0FFFFh, and two independent clock generation circuits: XIN-based crystal/resonator oscillator and adjustable high-speed on-chip oscillator.
Peripheral integration includes Timer RA/RB (8-bit × 2), Timer RD (16-bit × 2 with input capture/output compare), Timer RE (compare match), watchdog timer (15-bit with prescaler), and hardware LIN module tied to Timer RA and UART0 - enabling robust serial communication without software overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with 89 instructions; enables compact, efficient firmware for embedded control. |
| Flash Memory | 96 KB program ROM; sufficient for complex automotive body control or industrial sensor node firmware. |
| RAM | 5 KB on-chip SRAM; supports multiple task stacks, data buffering, and real-time variable storage. |
| CAN Interface | One CAN 2.0B-compliant controller with 16 message slots; handles full CAN bus arbitration and filtering in hardware. |
| A/D Converter | 10-bit SAR ADC with 12 analog inputs; provides sufficient resolution for motor current sensing or temperature monitoring. |
| Operating Voltage | 3.0–5.5 V supply range; compatible with standard 5 V automotive and industrial power rails. |
| Temperature Range | −40°C to +85°C (J version); validated for under-hood and factory-floor environments. |
| Package | 48-pin LQFP (PLQP0048KB-A, 7 mm × 7 mm, 0.5 mm pitch); surface-mount compatible with automated assembly. |
Pinout & Package
Package: 48-pin plastic LQFP (PLQP0048KB-A), 7 mm × 7 mm body, 0.5 mm pin pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | Analog Input / GPIO | 12-channel A/D converter inputs (AN0–AN7) plus general-purpose I/O; configurable pull-up and direction per pin. |
| P1_0–P1_7 | GPIO / Key Interrupt / Serial I/O | Supports KI0–KI3 key wake-up, UART0 TXD0/RXD0, and CLK0 clock I/O - enabling low-power human-interface and comms. |
| P2_0–P2_7 | Timer RD I/O | TRDIOA0–TRDIOD1 and TRDCLK pins provide 8-bit bidirectional timer I/O for PWM, capture, or quadrature decoding. |
| P3_0, P3_1, P3_3–P3_7 | I²C / SSI / CAN / Reset | SDA/SCL (I²C), SSI/SCS/SSCK/SSO (SPI-like), CTX0/CRX0 (CAN TX/RX), and RESET - enabling multi-protocol connectivity. |
| P4_2–P4_7, MODE, RESET | Analog Ref / Clock / Control | VREF sets ADC reference; XIN/XOUT support crystal/resonator; MODE configures boot mode; RESET initiates hardware reset. |
| P6_0–P6_7 | UART1 / INT / TREO | TXD1/RXD1 (UART1), INT2/INT3, TREO (timer output), and general I/O - expands serial and interrupt capability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN 2.0B Controller | Dedicated hardware with 16 message buffers eliminates CPU polling overhead and ensures deterministic bus timing. |
| Hardware LIN Module | Combines Timer RA and UART0 to implement ISO 9141-2/LIN 2.x physical layer without firmware intervention. |
| 10-bit 12-Channel ADC | Single-scan conversion time ≤ 10 μs; supports simultaneous sampling triggers from timers or external events. |
| Dual UART Interfaces | UART0 (LIN-capable) and UART1 support independent baud rates, framing, and interrupt-driven full-duplex operation. |
| On-Chip Oscillators | High-speed (adjustable) and low-speed on-chip oscillators enable fast wake-up and ultra-low-power sleep modes. |
| Watchdog Timer with Prescaler | 15-bit counter with selectable timeout (1–65536 cycles) provides fail-safe system recovery independent of main clock. |
Applications
| Automotive Body Control Unit | Industrial CAN Sensor Node |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, lighting, and mirror adjustment in passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing LIN slave protocols for actuators and CAN master for gateway communication. Use Value: Hardware LIN and CAN reduce firmware complexity and ensure timing-critical response within 15 ms latency budget. |
Use Scenario: Distributed temperature, pressure, and vibration monitoring across factory machinery via CAN bus. IC Role / Device Role / Timing Role: Edge-node processor acquiring analog sensor data, performing local threshold checks, and transmitting alerts over CAN. Use Value: Integrated 10-bit ADC and CAN controller enable direct sensor interfacing and protocol handling without external components. |
| Factory Automation I/O Module | Smart HVAC Controller |
Use Scenario: DIN-rail-mounted digital I/O expansion unit connecting PLCs to solenoids, relays, and limit switches. IC Role / Device Role / Timing Role: Real-time I/O scheduler managing 41 GPIO pins with interrupt-driven edge detection and pulse-width modulation. Use Value: 41 I/O pins + Timer RD's input capture allow precise timing of encoder signals and fast-response actuator control. |
Use Scenario: Zone-level climate control unit regulating fan speed, damper position, and refrigerant valves in commercial buildings. IC Role / Device Role / Timing Role: Embedded controller running PID loops using ADC inputs and driving PWM outputs for motor control. Use Value: On-chip 5 KB RAM and 96 KB flash support multi-zone algorithm storage and nonvolatile configuration retention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21227JFP | 48 KB flash, 2.5 KB RAM - 48 KB less program memory and 2.5 KB less RAM than R5F2122AJFP#W4. | Suitable for simpler LIN-only nodes or cost-sensitive designs where full CAN messaging load is not required. | Select when firmware size is <50 KB and RAM usage remains below 2.5 KB; retains identical pinout and peripheral set. |
| R5F2123AJFP | Includes 2 KB data flash (1 KB × 2 blocks); otherwise identical flash/RAM/peripherals/pinout to R5F2122AJFP#W4. | Required for applications needing field-updatable calibration tables or parameter storage without external EEPROM. | Choose when nonvolatile parameter storage beyond program ROM is essential; no PCB change needed. |
Compared with R5F21227JFP, R5F2122AJFP#W4 provides 48 KB more flash and 2.5 KB more RAM for complex control logic; compared with R5F2123AJFP, it omits data flash but reduces cost and simplifies firmware update architecture.
Availability
R5F2122AJFP#W4 is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN sensor networks, and factory automation I/O modules requiring stable component supply across extended product lifecycles.
Supply support for R5F2122AJFP#W4 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/22 Group, including R5F2122AJFP#W4, was engineered for cost-effective, real-time control in automotive and industrial applications - emphasizing CAN/LIN connectivity, analog integration, and robust operation across wide temperature ranges.
FAQ
What is the maximum operating frequency of the R5F2122AJFP#W4?
The R5F2122AJFP#W4 supports a maximum external crystal/resonator frequency of 20 MHz, achieving a minimum instruction execution time of 50 ns at VCC = 3.0–5.5 V. Its high-speed on-chip oscillator is adjustable but does not exceed 20 MHz in specification.
Does the R5F2122AJFP#W4 include data flash memory?
No, the R5F2122AJFP#W4 belongs to the R8C/22 Group and contains only program flash memory (96 KB). Data flash (1 KB × 2 blocks) is exclusive to the R8C/23 Group, such as R5F2123AJFP - confirmed by Renesas documentation REJ03B0097-0200.
What package type and pin count does the R5F2122AJFP#W4 use?
The R5F2122AJFP#W4 uses a 48-pin plastic LQFP package designated PLQP0048KB-A, with 7 mm × 7 mm body size and 0.5 mm pin pitch. This matches all R8C/22 and R8C/23 Group devices in the J and D versions.
Can the R5F2122AJFP#W4 operate in automotive under-hood environments?
Yes - the R5F2122AJFP#W4 is rated for −40°C to +85°C ambient operation (J version), meeting requirements for non-engine-compartment automotive applications such as body control modules, door modules, and lighting controllers.
Which communication interfaces are hardware-supported on the R5F2122AJFP#W4?
The R5F2122AJFP#W4 integrates hardware UART0 (LIN-capable), UART1, I²C bus interface, clock-synchronous serial I/O with chip select (SSI/SCS/SSCK/SSO), and a full CAN 2.0B controller - all implemented in dedicated peripheral logic, not bit-banged.
R5F2122AJFP#W4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/2x/22
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- CANbus, I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- POR, Voltage Detect, WDT
- Number of I/O:
- 41
- Program Memory Size:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 5K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2122AJFP#W4 FAQ
1.How can I place an order for R5F2122AJFP#W4 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2122AJFP#W4 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 R5F2122AJFP#W4 reliable?
The price and inventory of R5F2122AJFP#W4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2122AJFP#W4 is usually 5 days.
3.What payment methods are accepted for R5F2122AJFP#W4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2122AJFP#W4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2122AJFP#W4?
R5F2122AJFP#W4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2122AJFP#W4 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 R5F2122AJFP#W4?
For technical support, including R5F2122AJFP#W4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2122AJFP#W4 requirements.
6.How does Aetrix verify that R5F2122AJFP#W4 is sourced from the original manufacturer or authorized distributors?
All R5F2122AJFP#W4 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 R5F2122AJFP#W4 meets industry standards.
7.What is the process for return or replacement of R5F2122AJFP#W4?
All R5F2122AJFP#W4 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2122AJFP#W4, 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 R5F2122AJFP#W4 part is unused and in its original packaging.
Return procedure for R5F2122AJFP#W4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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