My Inquiry
My Account
Renesas R5F21217KFP#W5
- Part No.:
- R5F21217KFP#W5
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21217KFP#W5.pdf
- Description:
- IC MCU 16BIT 48KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,470
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F21217KFP from Renesas Electronics is a 16-bit R8C/21 Group microcontroller featuring the R8C CPU core, 48 KB program ROM, 2.5 KB RAM, and dual 1 KB data flash blocks. It operates at up to 20 MHz (VCC = 3.0–5.5 V), supports LIN bus via hardware module (Timer RA + UART0), and integrates a 10-bit 12-channel ADC for automotive sensor interfacing.
For engineers reviewing the R5F21217KFP datasheet, R5F21217KFP pinout, R5F21217KFP application, or R5F21217KFP equivalent, this MCU delivers deterministic real-time control in constrained-temperature industrial and automotive subsystems where embedded flash reprogrammability, LIN compliance, and analog sensing are required.
Technical Context
The R5F21217KFP implements the R8C CPU core with 89 fundamental instructions and executes at 50 ns minimum instruction time (20 MHz, 3.0–5.5 V). Its memory architecture includes separate 48 KB program ROM and two independent 1 KB data flash blocks-enabling simultaneous code execution and nonvolatile parameter storage without interrupting operation.
Peripheral integration centers on deterministic timing: Timer RD provides two 16-bit channels with input capture/output compare, while hardware LIN support combines UART0 and Timer RA for ISO 9141-2 and SAE J2602-compliant communication. The 10-bit ADC features 12 analog inputs with internal reference voltage support (VREF pin).
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. |
| Operating Frequency | Up to 20 MHz (VCC = 3.0–5.5 V); supports high-speed signal processing in motor control and sensor fusion. |
| Memory | 48 KB program ROM + 2 × 1 KB data flash blocks; allows field-upgradable firmware and persistent calibration data storage. |
| ADC | 10-bit resolution, 12-channel input; supports direct connection of temperature, pressure, and position sensors. |
| LIN Interface | Hardware LIN module (UART0 + Timer RA); ensures ISO 9141-2 compliance without CPU overhead or software bit-banging. |
| Temperature Range | −40°C to +125°C (K version); qualified for under-hood automotive applications and industrial power electronics. |
| Package | 48-pin LQFP (PLQP0048KB-A, 7 mm × 7 mm, 0.5 mm pitch); compatible with standard surface-mount assembly and thermal management. |
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 to P0_7 | Analog Input / I/O Port | 12-channel ADC inputs (AN0–AN7) + general-purpose CMOS I/O; configurable pull-up and direction per pin. |
| P1_0 to P1_3 | Key Input / Analog Input | KI0–KI3 interrupt-capable inputs + AN8–AN11; enables low-power wake-on-key and multi-sensor analog acquisition. |
| P1_4 / P1_5 | UART0 TXD0 / RXD0 | Dedicated full-duplex UART pins for LIN master/slave communication; no software bit-banging required. |
| P2_0 to P2_7 | Timer RD I/O | TRDIOA0–TRDIOD1 and TRDCLK; supports quadrature decoding, PWM generation, and edge-triggered capture. |
| P3_3 / P3_4 / P3_5 | I2C SSI Interface | SSI, SCS, SSCK pins; enables clock-synchronous serial communication with EEPROMs, DACs, or sensors. |
| P4_2 | VREF Input | External reference voltage input for ADC; improves measurement accuracy when internal VCC reference is noisy. |
| XIN / XOUT | Crystal Oscillator Interface | Supports external crystal (1–20 MHz) or ceramic resonator; essential for LIN baud rate accuracy and system timing stability. |
| RESET | Active-Low Reset Input | Asynchronous reset assertion resets CPU, peripherals, and registers; requires external RC or supervisor IC for robustness. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Integrated UART0 + Timer RA eliminates software UART timing jitter; meets ISO 9141-2 physical layer timing requirements. |
| Dual Data Flash Blocks | Two independent 1 KB blocks enable wear-leveling and atomic updates-critical for storing calibration coefficients or firmware patches. |
| 12-Channel 10-bit ADC | Simultaneous sampling not supported, but channel sequencing with auto-triggering from timers reduces CPU load in closed-loop systems. |
| 7-Level Interrupt Priority | Enables deterministic response to time-critical events (e.g., LIN frame start, ADC conversion complete, fault detection). |
| On-Chip Oscillators | High-speed (adjustable) and low-speed oscillators allow fast wake-up from STOP mode and clock source redundancy. |
Applications
| Body Control Module | Engine Coolant Sensor Interface |
|---|---|
|
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in modern vehicles. IC Role / Device Role / Timing Role: Main controller executing LIN slave node protocol, managing I/O states, and polling sensor inputs. Use Value: Hardware LIN module ensures precise 10.4 kbps baud rate timing; dual data flash stores vehicle-specific configuration without requiring external EEPROM. |
Use Scenario: Signal conditioning and linearization of thermistor-based coolant temperature readings. IC Role / Device Role / Timing Role: ADC front-end with programmable gain and reference selection, coupled with LIN transmission of calibrated values. Use Value: 12-channel ADC accepts direct thermistor bridge inputs; VREF pin allows stable reference under noisy engine bay conditions. |
| Seat Position Memory System | Industrial Motor Drive Feedback |
|
Use Scenario: Storing and recalling driver seat position via LIN-connected actuators and potentiometer feedback. IC Role / Device Role / Timing Role: Nonvolatile data manager using data flash blocks to retain seat profiles across power cycles. Use Value: 10,000-cycle endurance per data flash block enables >10-year retention of user preferences with daily updates. |
Use Scenario: Closed-loop speed and current monitoring in 3-phase BLDC motor drives for HVAC or pumps. IC Role / Device Role / Timing Role: Real-time ADC sampling synchronized to PWM periods via Timer RD trigger signals. Use Value: Timer RD input capture measures back-EMF zero-crossings; 16-bit resolution supports precise commutation timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21217JFP | Same core, memory, and peripherals; rated for −40°C to +85°C ambient instead of −40°C to +125°C. | Suitable for cabin-mounted modules (e.g., infotainment, HVAC controls) but not under-hood locations. | Select R5F21217JFP only if operating temperature stays below 85°C; otherwise R5F21217KFP is required. |
| R5F21227KFP | Higher ROM (64 KB), same RAM (2.5 KB), identical data flash (2 × 1 KB), same package and temperature grade. | Provides additional space for bootloader, safety diagnostics, or expanded feature sets without layout change. | Choose R5F21227KFP when firmware growth exceeds 48 KB; pin-compatible and drop-in upgrade path. |
Compared with R5F21217JFP, the R5F21217KFP enables under-hood deployment; compared with R5F21227KFP, it offers cost-optimized memory sizing for fixed-function LIN nodes with no future expansion need.
Availability
R5F21217KFP is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, and sensor interface applications requiring stable component supply over extended production lifecycles.
Supply support for R5F21217KFP 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/21 Group, including R5F21217KFP, was designed for cost-sensitive, real-time embedded control in automotive subsystems and industrial equipment where LIN connectivity and analog integration are critical.
FAQ
What is the maximum operating frequency of the R5F21217KFP?
The R5F21217KFP supports a maximum operating frequency of 20 MHz when powered at VCC = 3.0–5.5 V. At this speed, the minimum instruction execution time is 50 ns. Operation at 16 MHz is also supported per the K-version specification, with corresponding current consumption and timing characteristics documented in the Renesas R8C/21 Group hardware manual.
Does the R5F21217KFP include hardware LIN support?
Yes, the R5F21217KFP integrates a dedicated hardware LIN module combining UART0 and Timer RA to implement ISO 9141-2 and SAE J2602 physical layer timing. This eliminates software UART overhead and guarantees accurate 10.4 kbps baud rate generation independent of CPU load or interrupt latency.
How many data flash blocks does the R5F21217KFP have, and what is their endurance?
The R5F21217KFP contains two independent 1 KB data flash blocks (Block A and Block B), each rated for 10,000 write/erase cycles. This enables reliable storage of calibration data, device configuration, or firmware update metadata without requiring external nonvolatile memory.
What is the ADC resolution and channel count on the R5F21217KFP?
The R5F21217KFP features a single 10-bit successive-approximation ADC with 12 analog input channels (AN0–AN11). Inputs can be selected via software-controlled multiplexer, and conversions may be triggered by software, timer events, or external signals-supporting flexible sensor acquisition strategies.
Is the R5F21217KFP pin-compatible with other R8C/21 Group MCUs?
Yes, all R8C/21 Group MCUs-including R5F21217KFP-use the identical 48-pin LQFP package (PLQP0048KB-A) and share the same pin assignments and electrical characteristics. This allows direct substitution between variants (e.g., R5F21216KFP, R5F21218KFP) when memory or peripheral requirements change.
R5F21217KFP#W5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/2x/21
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- POR, Voltage Detect, WDT
- Number of I/O:
- 41
- Program Memory Size:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 2.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21217KFP#W5 FAQ
1.How can I place an order for R5F21217KFP#W5 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21217KFP#W5 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 R5F21217KFP#W5 reliable?
The price and inventory of R5F21217KFP#W5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21217KFP#W5 is usually 5 days.
3.What payment methods are accepted for R5F21217KFP#W5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21217KFP#W5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21217KFP#W5?
R5F21217KFP#W5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21217KFP#W5 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 R5F21217KFP#W5?
For technical support, including R5F21217KFP#W5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21217KFP#W5 requirements.
6.How does Aetrix verify that R5F21217KFP#W5 is sourced from the original manufacturer or authorized distributors?
All R5F21217KFP#W5 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 R5F21217KFP#W5 meets industry standards.
7.What is the process for return or replacement of R5F21217KFP#W5?
All R5F21217KFP#W5 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21217KFP#W5, 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 R5F21217KFP#W5 part is unused and in its original packaging.
Return procedure for R5F21217KFP#W5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F21217KFP#W5 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
