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Renesas R5F2122CJFP#U0
- Part No.:
- R5F2122CJFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F2122CJFP#U0.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,821
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Product details
Overview
R5F2122CJFP from Renesas Electronics is a 16-bit R8C/22 Group microcontroller with 128 KB flash program memory, 6 KB RAM, and integrated CAN 2.0B interface - designed for automotive and industrial networking applications requiring robust real-time control and deterministic communication. It features a high-performance R8C CPU core, 12-channel 10-bit ADC, hardware LIN module, and operates across -40°C to +85°C.
For engineers reviewing the R5F2122CJFP datasheet, R5F2122CJFP pinout, R5F2122CJFP application, or R5F2122CJFP equivalent, this MCU delivers verified CAN/LIN coexistence, on-chip oscillators with frequency adjustment, 48-pin LQFP packaging, and production-ready qualification for in-vehicle ECUs and factory automation nodes.
Technical Context
The R5F2122CJFP 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). Its memory architecture supports 1 Mbyte address space with fixed interrupt vector table at 0FFDCh–0FFFFh and dedicated SFR regions for CAN (01300h–0147Fh).
Peripheral integration includes Timer RD (16-bit × 2 channels with input capture/output compare), UART0/UART1, I²C bus interface (2), clock-synchronous serial I/O with chip select, and a hardware LIN module tied to Timer RA and UART0 - all mapped to confirmed 48-pin PLQP0048KB-A package pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions; enables compact, deterministic firmware for real-time control loops. |
| Flash Memory | 128 KB program ROM; sufficient for complex automotive diagnostics and multi-protocol stack implementation. |
| RAM | 6 KB on-chip RAM; supports nested interrupts, CAN message buffering, and LIN frame handling without external memory. |
| CAN Interface | Single CAN 2.0B controller with 16 message slots; provides full mailbox-based arbitration and error handling for vehicle networks. |
| A/D Converter | 10-bit ADC with 12 analog inputs; enables direct sensor monitoring (e.g., temperature, pressure, position) in embedded control systems. |
| 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; qualified for under-hood and factory-floor environments per Renesas Standard grade. |
| Package | 48-pin LQFP (PLQP0048KB-A, 7 mm × 7 mm, 0.5 mm pitch); surface-mount compatible with automated PCB assembly. |
Pinout & Package
Package: 48-pin plastic LQFP (PLQP0048KB-A), 7 mm × 7 mm body, 0.5 mm pin pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / AVCC (Pin 11) | Power supply input / Analog reference supply | Primary 3.0–5.5 V digital and analog domain supply; requires local decoupling to ensure stable ADC and CAN operation. |
| VSS / AVSS (Pin 9) | Ground / Analog ground | Digital and analog return path; separation improves noise immunity for 10-bit ADC measurements. |
| XIN (Pin 10) / XOUT (Pin 8) | Clock oscillator input / output | Supports ceramic resonator or crystal up to 20 MHz; enables precise timing for CAN bit rate accuracy and LIN synchronization. |
| CTX0 (Pin 43) / CRX0 (Pin 42) | CAN transmit / receive data | Dedicated differential pair for CAN physical layer interface; connects directly to ISO 11898-compliant transceiver. |
| AN0–AN11 (Pins 36–30, 24, 28–29, 40) | Analog input channels | 12 single-ended inputs for 10-bit A/D conversion; share pins with I/O ports, enabling flexible mixed-signal design. |
| RESET (Pin 7) | Active-low reset input | Hardware reset assertion resets CPU, peripherals, and registers; supports external watchdog or power-on reset circuitry. |
| INT0–INT3 (Pins 25, 41, 26, 27) | External interrupt inputs | Four dedicated edge-triggered interrupt sources; used for event-driven response (e.g., CAN error flag, LIN wake-up). |
| P0_0–P0_7 (Pins 47–36) | General-purpose I/O port | 8-bit bidirectional port with programmable pull-ups; supports peripheral function multiplexing (e.g., AN7–AN0, SSO). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN 2.0B Controller | 16-message-slot hardware mailbox system eliminates CPU overhead for CAN arbitration, filtering, and error recovery. |
| Hardware LIN Module | Full LIN 2.x protocol support via Timer RA and UART0; enables slave node implementation without software bit-banging. |
| On-Chip Oscillators | High-speed (adjustable) and low-speed on-chip oscillators reduce BOM cost and board space versus external crystals. |
| Data-Retentive Reset Behavior | Power-on reset and voltage detection circuit ensure reliable initialization across supply transients in automotive environments. |
| Emulator Debug Support | Dedicated debug area (20000h–23FFFh) enables in-circuit debugging without consuming user program memory. |
| Industrial Temperature Grade | Qualified from -40°C to +85°C per Renesas Standard grade; validated for use in engine control units and PLC I/O modules. |
Applications
| Automotive Body Control Module | Industrial CAN Gateway |
|---|---|
Use Scenario: Centralized control of door locks, lighting, and window actuators in passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU managing LIN slave devices (e.g., mirror controls) and communicating via CAN to instrument cluster and ECU. Use Value: Hardware LIN + CAN coexistence reduces firmware complexity and ensures synchronized message scheduling per ISO 17987 and ISO 11898. |
Use Scenario: Protocol translation between CANopen fieldbus and Modbus RTU over RS-485 in factory automation. IC Role / Device Role / Timing Role: Real-time bridge MCU executing dual-stack communication with deterministic latency for motion control coordination. Use Value: 128 KB flash stores dual protocol stacks; 12-channel ADC monitors power supply health and thermal sensors locally. |
| Smart HVAC Controller | Diagnostic Scan Tool Interface |
Use Scenario: Embedded climate control unit with temperature sensing, fan speed regulation, and dashboard display interface. IC Role / Device Role / Timing Role: Sensor fusion processor acquiring analog inputs (NTC, humidity) and driving PWM fans while maintaining CAN diagnostics link. Use Value: Integrated 10-bit ADC and 16-bit timers enable precise closed-loop control without external signal conditioning ICs. |
Use Scenario: Handheld OBD-II diagnostic tool supporting UDS and KWP2000 protocols over CAN. IC Role / Device Role / Timing Role: Protocol interpreter and CAN message handler interfacing with vehicle network and USB host. Use Value: Verified CAN 2.0B compliance ensures reliable message transmission during active diagnostics sessions per SAE J2411. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2123CJFP | Includes 2 KB data flash (1 KB × 2 blocks); identical program ROM, RAM, peripherals, and pinout. | Required for applications needing non-volatile parameter storage (e.g., calibration data, odometer values) without external EEPROM. | Select R5F2123CJFP when data logging or field-updatable configuration is mandatory; otherwise R5F2122CJFP offers lower cost and same functionality. |
| R5F2122CKFP | Same 128 KB flash and 6 KB RAM but rated for -40°C to +125°C ambient; J version is -40°C to +85°C. | Suitable for under-hood applications (e.g., transmission control) where junction temperature exceeds 85°C ambient limits. | Choose R5F2122CKFP only if extended temperature qualification is required; R5F2122CJFP suffices for cabin or chassis-mounted modules. |
Compared with R5F2123CJFP and R5F2122CKFP, the R5F2122CJFP provides optimal cost/performance balance for CAN/LIN nodes operating within standard automotive cabin temperature ranges and without data flash requirements.
Availability
R5F2122CJFP is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN gateways, and smart HVAC controllers requiring stable component supply and long-term production continuity.
Supply support for R5F2122CJFP 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, and power solutions for automotive, industrial, and IoT markets.
The R8C/22 Group, including R5F2122CJFP, was engineered for cost-sensitive, real-time automotive and industrial control applications demanding CAN/LIN connectivity, mixed-signal integration, and production-grade reliability.
FAQ
What is the maximum operating frequency of the R5F2122CJFP?
The R5F2122CJFP supports a maximum external crystal or resonator frequency of 20 MHz, achieving a minimum instruction execution time of 50 ns at VCC = 3.0–5.5 V. Its internal high-speed oscillator is adjustable but not rated for 20 MHz operation; external clock source is required for full-speed CAN and LIN timing compliance.
Does the R5F2122CJFP include data flash memory?
No, the R5F2122CJFP belongs to the R8C/22 Group and contains only program flash memory (128 KB). Data flash (1 KB × 2 blocks) is exclusive to the R8C/23 Group, such as R5F2123CJFP. The R5F2122CJFP relies on RAM or external EEPROM for non-volatile data storage.
Which development tools support the R5F2122CJFP?
Renesas provides the HEW (High-performance Embedded Workshop) IDE and Flash Development Toolkit for R5F2122CJFP firmware development and programming. Compatible debug interfaces include the E8 emulator and E10A-USB emulator, both supporting the 48-pin PLQP0048KB-A package's dedicated debug pins.
What is the purpose of the MODE pin on the R5F2122CJFP?
The MODE pin (Pin 4) must be externally pulled high to VCC via a resistor to configure the R5F2122CJFP for normal single-chip operation. Leaving it unconnected or pulling low may place the device in test or boot modes incompatible with standard application execution.
How does the R5F2122CJFP handle CAN bus errors?
The R5F2122CJFP implements full CAN 2.0B error handling in hardware, including error frame generation, automatic retransmission, and error counters (TEC/REC) that trigger bus-off recovery. Its 16-slot message buffer allows prioritized reception and transmission without CPU polling, ensuring deterministic response in noisy automotive environments.
R5F2122CJFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/2x/22
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- 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:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 6K 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:
R5F2122CJFP#U0 FAQ
1.How can I place an order for R5F2122CJFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2122CJFP#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 R5F2122CJFP#U0 reliable?
The price and inventory of R5F2122CJFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2122CJFP#U0 is usually 5 days.
3.What payment methods are accepted for R5F2122CJFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2122CJFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F2122CJFP#U0?
R5F2122CJFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2122CJFP#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 R5F2122CJFP#U0?
For technical support, including R5F2122CJFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2122CJFP#U0 requirements.
6.How does Aetrix verify that R5F2122CJFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F2122CJFP#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 R5F2122CJFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F2122CJFP#U0?
All R5F2122CJFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2122CJFP#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 R5F2122CJFP#U0 part is unused and in its original packaging.
Return procedure for R5F2122CJFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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