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Renesas R5F21208JFP#U1
- Part No.:
- R5F21208JFP#U1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21208JFP#U1.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,399
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Product details
Overview
R5F21208JFP from Renesas Electronics is a 16-bit R8C/20 Group microcontroller with 64 KB flash program memory, 3 KB RAM, and 48-pin LQFP (PLQP0048KB-A) packaging. It features an R8C CPU core, 12-channel 10-bit A/D converter, dual UARTs, LIN module, I²C interface, and timers including 16-bit Timer RD with input capture/output compare - used in automotive body control modules requiring deterministic real-time response.
For engineers reviewing the R5F21208JFP datasheet, R5F21208JFP pinout, R5F21208JFP application, or R5F21208JFP equivalent, key selection criteria include its -40°C to +85°C operating range (J version), 20 MHz max clock (VCC = 3.0–5.5 V), 41 general-purpose I/O pins, integrated voltage detection and watchdog timer, and compatibility with Renesas' E1/E20 debug interfaces.
Technical Context
The R5F21208JFP implements the R8C CPU core with 89 fundamental instructions and executes at 50 ns minimum instruction time (20 MHz XIN). Its memory architecture includes 1 Mbyte address space, fixed interrupt vector table at 0FFDCh–0FFFFh, and SFRs mapped to 00000h–002FFh.
Peripheral integration centers on real-time control: Timer RD provides two 16-bit channels with input capture and output compare for motor timing; LIN module combines Timer RA and UART0 for ISO 9141-2/SAE J2602 compliance; and dual UARTs support asynchronous communication with independent baud rate generators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with register bank switching and 20-bit PC for 1 Mbyte addressing |
| Flash Memory | 64 KB program ROM; supports in-system programming at VCC = 2.7–5.5 V |
| RAM | 3 KB on-chip SRAM, allocated from 00400h, usable for stack and data storage |
| A/D Converter | 10-bit resolution, 12 input channels (AN0–AN11), internal reference or external VREF |
| Timers | Timer RA/RB (8-bit × 2), Timer RD (16-bit × 2 w/ input capture & output compare), Timer RE (8-bit w/ compare match) |
| Serial Interfaces | UART0 + UART1 (asynchronous), I²C bus (2-wire), clock-synchronous serial I/O w/ chip select, LIN hardware module |
| Supply & Temp | VCC = 3.0–5.5 V at f(XIN) = 20 MHz; operating ambient: -40°C to +85°C (J version) |
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 / I/O port | 12-channel A/D inputs (AN0–AN7); configurable CMOS I/O with software-selectable pull-up |
| P1_0–P1_7 | General I/O / peripheral multiplex | Support KI0–KI3 key interrupts, RXD0/TXD0, CLK0, TRAIO, INT1 - all individually direction-controllable |
| P2_0–P2_7 | Timer RD I/O | TRDIOA0–TRDIOD1 and TRDCLK provide full 16-bit Timer RD channel control for PWM generation and edge capture |
| P3_0, P3_1, P3_3–P3_7 | Multiplexed I/O | SSO, SCL, SDA, SSI, SCS, SSCK enable I²C and synchronous serial; TRAO/TRBO support timer output functions |
| P4_2, P4_3, P4_4, P4_5, P4_6 | Dedicated function pins | VREF (A/D reference), INT0, MODE, RESET, XIN - XIN requires external crystal/resonator or clock source |
| P6_0–P6_7 | Peripheral I/O | TREO (Timer RE output), INT2/INT3, TXD1/RXD1, and general I/O - supports LIN bus physical layer via UART1 |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated LIN 1.3/2.0/2.1 protocol engine using Timer RA and UART0 - eliminates external transceiver for slave-node implementation |
| Data Retention Without External EEPROM | No data flash (R8C/20 Group); relies on external nonvolatile storage or battery-backed RAM for parameter logging |
| Oscillation Stop Detection | Monitors XIN clock failure and triggers reset or interrupt - critical for fail-safe automotive subsystems |
| Voltage Detection Circuit | On-chip brown-out detection with programmable threshold - ensures reliable reset during supply sag |
| Debug Support | Fully compatible with Renesas E1 emulator and CS+ IDE; uses dedicated debug pins (not shared with user I/O) |
Applications
| Body Control Module (BCM) | Smart Lighting Controller |
|---|---|
Use Scenario: Centralized management of door locks, window lifts, interior lighting, and mirror controls in passenger vehicles. IC Role / Device Role / Timing Role: Main MCU executing CAN/LIN gateway logic, analog sensor reading (potentiometers, temp), and PWM-driven actuator control. Use Value: 41 GPIOs enable direct connection to switches/sensors; 12-channel A/D supports multi-point cabin temperature sensing; UART0+LIN handles subnetwork communication without external protocol ICs. |
Use Scenario: Adaptive LED headlight system with beam pattern adjustment, thermal monitoring, and diagnostics. IC Role / Device Role / Timing Role: Real-time PWM generator for LED current control, thermal feedback processor via AN inputs, and LIN slave node for ECU coordination. Use Value: Timer RD's input capture measures thermal sensor pulse width; 10-bit A/D resolves fine-grained temperature gradients; LIN hardware reduces firmware overhead versus bit-banged implementations. |
| Engine Bay Sensor Hub | Industrial HVAC Controller |
Use Scenario: Aggregation and preprocessing of pressure, temperature, and throttle position signals near engine compartment. IC Role / Device Role / Timing Role: Signal conditioner and local decision node - filters noise, detects out-of-range values, and reports via LIN to main ECU. Use Value: -40°C to +85°C rating ensures operation under hood thermal stress; on-chip voltage detector prevents erratic behavior during cranking voltage dips. |
Use Scenario: Standalone air handling unit controller managing fan speed, damper position, and zone temperature setpoints. IC Role / Device Role / Timing Role: Primary controller running PID loops for temperature regulation, driving triac-based fan control and stepper motor dampers. Use Value: Two UARTs allow simultaneous Modbus RTU (RS-485) and local HMI (RS-232) connectivity; 64 KB flash accommodates field-upgradable control algorithms and calibration tables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21208KFP | Same core, memory, and peripherals; rated for -40°C to +125°C ambient (K version) | Required for under-hood engine control or transmission modules exceeding 85°C junction temperature | Select R5F21208KFP when extended temperature qualification is mandatory per AEC-Q100 Grade 2 or industrial high-temp specs. |
| R5F21218JFP | Adds 2 KB data flash (1 KB × 2 blocks); otherwise identical ROM/RAM/peripherals/package | Enables EEPROM-like parameter storage (e.g., calibration offsets, usage counters) without external NV memory | Choose R5F21218JFP if field-updatable configuration data or wear-leveling logging is required - no PCB change needed. |
Compared with R5F21208JFP, R5F21208KFP extends thermal capability without altering firmware or layout, while R5F21218JFP adds data flash for nonvolatile parameter retention - both share identical pinout, code compatibility, and toolchain support.
Availability
R5F21208JFP is available at Aetrix Electronics and suitable for automotive body electronics, industrial HVAC controllers, and smart lighting systems requiring stable component supply across multi-year production cycles.
Supply support for R5F21208JFP 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/20 Group, including R5F21208JFP, was designed for cost-sensitive, real-time automotive and industrial control applications where reliability, integrated peripherals, and debug readiness are essential - not for safety-critical ASIL-B/C systems.
FAQ
What is the maximum operating frequency of the R5F21208JFP?
The R5F21208JFP supports a maximum external clock frequency of 20 MHz at VCC = 3.0–5.5 V, achieving a 50 ns minimum instruction execution time. Its internal high-speed on-chip oscillator can be adjusted but does not exceed this rated XIN frequency. The R5F21208JFP must be operated within these limits to guarantee timing compliance and data sheet specifications.
Does the R5F21208JFP include data flash memory?
No, the R5F21208JFP belongs to the R8C/20 Group and contains only program flash memory (64 KB) and SRAM (3 KB). It does not integrate data flash - unlike the R8C/21 Group (e.g., R5F21218JFP), which adds 2 KB of data flash. Applications requiring nonvolatile parameter storage must use external EEPROM or FRAM with the R5F21208JFP.
Which debug interfaces are supported by the R5F21208JFP?
The R5F21208JFP is fully supported by Renesas' E1 and E20 emulators via the standard 14-pin JTAG connector. It does not require dedicated debug pins beyond the standard TCK/TMS/TDI/TDO and TRST signals. Firmware development and real-time tracing for the R5F21208JFP are enabled through Renesas CS+ and e2 studio IDEs.
Can the R5F21208JFP operate at 2.7 V supply voltage?
No - the R5F21208JFP (J version) is specified for VCC = 3.0–5.5 V when operating at 20 MHz. At lower frequencies (e.g., 10 MHz), the datasheet permits VCC = 2.7–5.5 V, but this requires derating clock speed. For full-speed 20 MHz operation, 3.0 V minimum is mandatory. Always verify supply stability under load for the R5F21208JFP.
What LIN protocol versions does the R5F21208JFP hardware module support?
The R5F21208JFP's integrated LIN module supports LIN 1.3, LIN 2.0, and LIN 2.1 physical and data link layers when paired with an external LIN transceiver. It implements the required UART framing, checksum calculation, and synchronization break detection in hardware - reducing CPU load versus software-only implementations. This capability applies directly to the R5F21208JFP without firmware modification.
R5F21208JFP#U1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/2x/20
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- POR, Voltage Detect, WDT
- Number of I/O:
- 41
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 3K 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:
R5F21208JFP#U1 FAQ
1.How can I place an order for R5F21208JFP#U1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21208JFP#U1 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 R5F21208JFP#U1 reliable?
The price and inventory of R5F21208JFP#U1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21208JFP#U1 is usually 5 days.
3.What payment methods are accepted for R5F21208JFP#U1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21208JFP#U1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21208JFP#U1?
R5F21208JFP#U1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21208JFP#U1 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 R5F21208JFP#U1?
For technical support, including R5F21208JFP#U1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21208JFP#U1 requirements.
6.How does Aetrix verify that R5F21208JFP#U1 is sourced from the original manufacturer or authorized distributors?
All R5F21208JFP#U1 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 R5F21208JFP#U1 meets industry standards.
7.What is the process for return or replacement of R5F21208JFP#U1?
All R5F21208JFP#U1 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21208JFP#U1, 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 R5F21208JFP#U1 part is unused and in its original packaging.
Return procedure for R5F21208JFP#U1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F21208JFP#U1 Tags
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ATTINY4-TSHR
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