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Renesas R5F21296JSP#W4
- Part No.:
- R5F21296JSP#W4
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F21296JSP#W4.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,961
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Product details
Overview
R5F21296JSP#W4 from Renesas Electronics is a 16-bit R8C/29 Group single-chip microcontroller with 32 KB program flash, 2 KB on-chip data flash (1 KB × 2 blocks), 1.5 KB RAM, and operating temperature range of −40 to +85°C. It integrates UART0/UART1, I²C bus interface, LIN module, 10-bit 4-channel ADC, four 8-/16-bit timers, and operates at up to 20 MHz (VCC = 3.0–5.5 V). It targets embedded control in industrial sensors and automotive body electronics.
For engineers reviewing the R5F21296JSP#W4 datasheet, R5F21296JSP#W4 pinout, R5F21296JSP#W4 application, or R5F21296JSP#W4 equivalent, key selection considerations include its J-version industrial temperature grade, dual-block data flash for firmware parameter storage, hardware LIN support via Timer RA and UART0, and LSSOP-20 package compatibility with space-constrained PCB layouts.
Technical Context
The R5F21296JSP#W4 implements the R8C CPU core with 89 fundamental instructions and executes at minimum 50 ns per instruction (20 MHz XIN clock, 3.0–5.5 V). Its memory architecture separates 32 KB program ROM (addressable up to 08000h) from 2 KB data flash (dual 1 KB blocks), enabling independent erase/write cycles for configuration data without affecting code execution.
Peripheral integration includes Timer RE with compare match (but no real-time clock in J version), UART0 supporting clock-synchronous serial I/O and UART modes, and hardware LIN 2.1-compliant transceiver logic tied to Timer RA and UART0 - all controlled via dedicated SFRs mapped in the 00000h–002FFh special function register space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with two register banks and 20-bit PC for 1 Mbyte address space |
| Flash Memory | 32 KB program ROM + 2 KB data flash (1 KB × 2 blocks), 10,000 write/erase cycles for data flash |
| RAM | 1.5 KB on-chip SRAM, used for variables, stack, and subroutine calls |
| Operating Voltage | 3.0–5.5 V - supports direct connection to standard 3.3 V or 5 V system rails |
| Temperature Range | −40 to +85°C (J version) - qualified for industrial and automotive body-control environments |
| Timers | Timer RA/RB (8-bit × 2), Timer RC (16-bit input capture/output compare), Timer RE (compare match only, no RTC in J version) |
| Serial Interfaces | UART0 (clock sync + UART), UART1 (UART only), I²C bus interface, LIN hardware module (Timer RA + UART0) |
Pinout & Package
Package: 20-pin molded-plastic LSSOP (PLSP0020JB-A), 0.65 mm pitch, surface-mount compatible with reflow soldering profiles for industrial assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_0 / KI0 / AN8 | GPIO / Key interrupt input / ADC channel 0 | Configurable as wake-up-capable input or analog sensor input with 10-bit resolution |
| P1_4 / TXD0 | UART0 transmit output | Drives RS-232/RS-485 level-shifter or direct TTL-level communication at up to 20 MHz baud clock |
| P3_4 / SDA / SCS / TRCIOC | I²C data / chip select / timer RC input capture | Shared pin enables I²C slave mode or synchronous peripheral selection or edge-triggered timing capture |
| P3_5 / SCL / SSCK / TRCIOD | I²C clock / serial clock / timer RC output compare | Supports multi-master I²C bus timing or PWM generation with programmable duty cycle |
| RESET | Active-low reset input | Asynchronous reset assertion halts CPU, clears registers, and restarts from vector table at 0FFDCh |
| XIN / XCIN | Crystal/resonator input (XIN) or 32 kHz crystal input (XCIN, N/D only) | R5F21296JSP#W4 uses XIN only - XCIN functionality excluded per J-version specification |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated LIN 2.1 protocol engine using Timer RA and UART0 - eliminates external transceiver for basic node implementation |
| Dual-Block Data Flash | Two independent 1 KB data flash blocks allow background erase/write of calibration parameters while application code runs from program ROM |
| 10-bit 4-Channel ADC | Simultaneous sampling not supported, but configurable trigger sources (timer, software) enable precise sensor monitoring in motor control or HVAC systems |
| Low-Power Stop Mode | 0.7 µA typical current at 3.0 V - enables battery-backed operation in always-on sensor nodes with wake-on-interrupt capability |
| Industrial Temperature Grade | −40 to +85°C operation with guaranteed parametric performance - suitable for under-hood automotive modules and factory-floor controllers |
Applications
| Automotive Body Control | Industrial Sensor Node |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in entry-level vehicles. IC Role / Device Role / Timing Role: Primary MCU executing LIN cluster communication, GPIO-driven actuator control, and analog sensor feedback processing. Use Value: Hardware LIN module reduces BOM cost and PCB area versus discrete transceiver + MCU solutions; J-version temp grade ensures reliability in cabin environments. |
Use Scenario: Wireless-capable environmental monitor measuring temperature, humidity, and CO₂ in smart building HVAC ducts. IC Role / Device Role / Timing Role: Sensor fusion processor managing ADC inputs, SPI/I²C peripheral interfaces, and low-power sleep/wake scheduling. Use Value: Dual data flash blocks store calibrated sensor offsets and field-updatable compensation algorithms without disrupting main firmware execution. |
| Home Appliance Motor Control | Office Equipment Power Management |
Use Scenario: Brushless DC motor commutation and thermal protection in premium washing machines. IC Role / Device Role / Timing Role: Real-time motor phase timing generator using Timer RC input capture and output compare, synchronized to hall-effect sensor edges. Use Value: 16-bit Timer RC provides sub-microsecond timing resolution for precise 6-step commutation; 20 MHz max clock enables fast loop response. |
Use Scenario: Standby power supervisor and USB device enumeration controller in multifunction printers. IC Role / Device Role / Timing Role: System manager monitoring AC detect, battery charge status, and USB suspend/resume signaling via GPIO and UART. Use Value: 0.7 µA stop-mode current extends backup battery life during extended idle periods; UART0 supports host communication for 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 |
|---|---|---|---|
| R5F21294JSP | 16 KB program ROM, same 2 KB data flash, identical peripherals and pinout | Lower code density margin for complex control algorithms or bootloader+application partitioning | Select when firmware size ≤16 KB and cost optimization is prioritized over future feature expansion. |
| R5F21286JSP | R8C/28 Group variant: no data flash, same 32 KB program ROM, identical temperature grade and package | Requires external EEPROM or FRAM for non-volatile parameter storage; no in-system reprogrammable data area | Select when data logging or field calibration is unnecessary and legacy R8C/28 toolchain compatibility is required. |
Compared with R5F21294JSP, R5F21296JSP#W4 offers 100% more program memory for larger control stacks or integrated communication stacks; compared with R5F21286JSP, it adds dual-block data flash enabling robust parameter retention without external components - critical for automotive and industrial certification requirements.
Availability
R5F21296JSP#W4 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance motor control, and office equipment power management requiring stable component supply across multi-year production cycles.
Supply support for R5F21296JSP#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/29 Group, including R5F21296JSP#W4, was designed for cost-sensitive, high-reliability embedded control applications requiring integrated LIN, data flash, and industrial temperature operation - particularly in automotive body electronics and industrial automation.
FAQ
What is the maximum operating frequency and supply voltage range for R5F21296JSP#W4?
R5F21296JSP#W4 operates at up to 20 MHz with a supply voltage range of 3.0 V to 5.5 V. This allows direct interfacing with common 3.3 V or 5 V system rails without level-shifting. The 50 ns minimum instruction execution time is achieved under these conditions, enabling responsive real-time control loops in applications such as motor commutation or sensor polling.
Does R5F21296JSP#W4 include a real-time clock (RTC) function?
No, R5F21296JSP#W4 does not include a real-time clock function. While Timer RE is present, the J-version specification explicitly limits it to compare match functionality only - the RTC capability (e.g., calendar timekeeping with 32.768 kHz crystal support) is reserved for N and D versions that include the XCIN/XCOUT pins. R5F21296JSP#W4 relies on external timing sources or software-based timekeeping.
How is the data flash organized in R5F21296JSP#W4, and what is its endurance?
R5F21296JSP#W4 contains 2 KB of on-chip data flash, structured as two independent 1 KB blocks. Each block supports 10,000 write/erase cycles - significantly higher than the 1,000-cycle endurance of the main program ROM. This architecture enables reliable storage of calibration data, device configuration, or field-updatable parameters without compromising firmware integrity.
Is R5F21296JSP#W4 pin-compatible with other R8C/29 Group devices like R5F21294JSP?
Yes, R5F21296JSP#W4 is fully pin-compatible with all R8C/29 Group devices in the PLSP0020JB-A (LSSOP-20) package, including R5F21294JSP and R5F21292JSP. Pin assignments, electrical characteristics, and peripheral mappings are identical - only memory capacities (ROM and RAM) differ. This enables scalable design reuse across product tiers without PCB redesign.
What LIN protocol version does the hardware LIN module in R5F21296JSP#W4 support?
The hardware LIN module in R5F21296JSP#W4 supports LIN 2.1 protocol compliance. It integrates dedicated logic for LIN header detection, checksum calculation (classic and enhanced), and automatic response timing - implemented using Timer RA for baud rate generation and UART0 for data framing. This eliminates the need for bit-banged software LIN stacks and improves timing accuracy in automotive networks.
R5F21296JSP#W4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- R8C/2x/29
- Packaging:
- Tape & Reel (TR)
- 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:
- 13
- 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 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21296JSP#W4 FAQ
1.How can I place an order for R5F21296JSP#W4 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21296JSP#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 R5F21296JSP#W4 reliable?
The price and inventory of R5F21296JSP#W4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21296JSP#W4 is usually 5 days.
3.What payment methods are accepted for R5F21296JSP#W4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21296JSP#W4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21296JSP#W4?
R5F21296JSP#W4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21296JSP#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 R5F21296JSP#W4?
For technical support, including R5F21296JSP#W4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21296JSP#W4 requirements.
6.How does Aetrix verify that R5F21296JSP#W4 is sourced from the original manufacturer or authorized distributors?
All R5F21296JSP#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 R5F21296JSP#W4 meets industry standards.
7.What is the process for return or replacement of R5F21296JSP#W4?
All R5F21296JSP#W4 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21296JSP#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 R5F21296JSP#W4 part is unused and in its original packaging.
Return procedure for R5F21296JSP#W4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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