My Inquiry
My Account
Renesas R5F21228DFP#U0
- Part No.:
- R5F21228DFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21228DFP#U0.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,072
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F21228DFP from Renesas Electronics is a 16-bit R8C/22 Group microcontroller built on silicon gate CMOS technology, featuring an R8C CPU core, 64 KB flash program memory, 3 KB RAM, and integrated CAN 2.0B interface for in-vehicle networking. It operates at up to 20 MHz (50 ns min instruction time), supports 12-channel 10-bit A/D conversion, and is packaged in a 48-pin LQFP (PLQP0048KB-A) for automotive and industrial control applications.
For engineers reviewing the R5F21228DFP datasheet, R5F21228DFP pinout, R5F21228DFP application, or R5F21228DFP equivalent, key selection considerations include its -40°C to +85°C operating range (D version), single-chip operation with on-chip oscillators, UART/LIN/CAN serial interfaces, and peripheral set optimized for real-time embedded control in constrained environments.
Technical Context
The R5F21228DFP implements the R8C CPU core with 89 fundamental instructions and a 1 Mbyte address space, enabling high-efficiency code execution. Its memory subsystem includes 64 KB of flash program ROM and 3 KB of SRAM, with no data flash-distinguishing it from the R8C/23 Group.
Peripheral integration centers on real-time control: dual UARTs (one supporting LIN hardware), 16-slot CAN 2.0B module, 12-channel 10-bit A/D converter, four timer units (RA–RE) with input capture/output compare, and I²C bus interface-all managed via dedicated SFRs mapped to fixed addresses (e.g., 00000h–002FFh and 01300h–0147Fh for CAN).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions; enables compact, deterministic firmware for safety-critical control loops. |
| Flash Memory | 64 KB program ROM; sufficient for complex motor control or body electronics firmware with bootloader space. |
| RAM | 3 KB on-chip SRAM; supports real-time task stacks, ISR context storage, and sensor data buffering. |
| Operating Voltage | 3.0–5.5 V at 20 MHz; compatible with standard automotive 5 V supply rails and industrial 3.3 V systems. |
| A/D Converter | 10-bit resolution, 12 input channels; provides sufficient precision for analog sensor interfacing (e.g., temperature, pressure). |
| CAN Interface | Single CAN 2.0B controller with 16 message slots; supports robust vehicle network communication without external transceiver logic. |
| Timers | Timer RA/RB (8-bit), RD (16-bit ×2 w/ input capture/output compare), RE (compare match); enables PWM generation, pulse measurement, and periodic interrupt timing. |
| Package | 48-pin LQFP (PLQP0048KB-A, 7 mm × 7 mm, 0.5 mm pitch); surface-mount compatible with automated PCB assembly and thermal management in dense layouts. |
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 / Analog reference | Dual-purpose supply pin: VCC powers digital logic; AVCC separately powers A/D converter-requires local decoupling to minimize noise coupling. |
| VSS / AVSS (Pin 9) | Ground / Analog ground | Common return path; AVSS must be routed separately from digital ground and tied at single point to reduce A/D quantization error. |
| XIN / XOUT (Pins 10 / 8) | Crystal oscillator input/output | Supports external crystal (1–20 MHz) or ceramic resonator; XOUT is output-only and must not be loaded externally. |
| RESET (Pin 7) | Active-low reset input | Asynchronous reset assertion halts CPU, clears registers, and restarts from vector 0FFDCh-critical for fail-safe recovery. |
| CTX0 / CRX0 (Pins 43 / 42) | CAN transmit / receive | Dedicated differential pair for CAN physical layer interface; requires external CAN transceiver (e.g., TJA1042) for bus connection. |
| AN0–AN11 (Pins 36–30, 24, 28–29, 47–44) | Analog inputs | 12-channel 10-bit A/D inputs; support single-ended sampling with internal reference (VREF on Pin 40) or AVCC. |
| RXD0 / TXD0 (Pins 22 / 23) | UART0 serial I/O | Full-duplex asynchronous communication port; RXD0 supports LIN break detection when used with Timer RA. |
| INT0–INT3 (Pins 25, 26, 27, 21) | External interrupt inputs | Four dedicated edge-triggered interrupt sources; INT0 maps to Timer RD input for precise event timestamping. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip oscillators | High-speed (adjustable 1–20 MHz) and low-speed (32 kHz) RC oscillators eliminate need for external crystals in cost-sensitive designs. |
| Hardware LIN support | Integrated LIN protocol engine using Timer RA and UART0 reduces MCU loading and ensures strict timing compliance per LIN 2.x spec. |
| Oscillation stop detection | Monitors XIN clock failure and triggers reset or interrupt-essential for automotive functional safety (ISO 26262 ASIL-B readiness). |
| Voltage detection circuit | On-chip brown-out detector with programmable threshold prevents erratic operation during supply dips below 2.7 V. |
| Interrupt priority levels | 7-level nested interrupt architecture allows deterministic response to time-critical events (e.g., CAN message arrival vs. A/D conversion complete). |
| Memory protection | Fixed interrupt vector table (0FFDCh–0FFFFh) and emulator debug region exclusion (20000h–23FFFh) prevent accidental overwrites in production firmware. |
Applications
| Body Control Module (BCM) | Industrial PLC I/O Terminal |
|---|---|
|
Use Scenario: Centralized control of door locks, lighting, wipers, and window lifts in passenger vehicles. IC Role / Device Role / Timing Role: Main system controller executing real-time state machines, managing CAN messages from gateway ECU, and driving GPIO peripherals. Use Value: Integrated CAN 2.0B and 12-channel A/D enable direct sensor/actuator interfacing without external glue logic, reducing BOM count and board area. |
Use Scenario: Remote I/O node collecting analog sensor data (temperature, pressure) and controlling solenoids/relays in factory automation. IC Role / Device Role / Timing Role: Edge controller performing local closed-loop regulation, communicating status via UART to master PLC over RS-485. Use Value: 3 KB RAM and dual UARTs support concurrent Modbus RTU polling and local PID computation, minimizing latency versus cloud-dependent architectures. |
| Motor Drive Feedback Unit | Smart HVAC Actuator |
|
Use Scenario: Position/speed feedback and fault monitoring for BLDC motors in automotive radiator fans or power steering pumps. IC Role / Device Role / Timing Role: Real-time encoder signal processing via Timer RD input capture and PWM generation via Timer RE outputs. Use Value: 16-bit Timer RD with input capture provides ±1-count resolution on 100 kHz encoder signals, ensuring accurate rotor position tracking. |
Use Scenario: Precision damper control in automotive climate systems using stepper motor or DC motor with position feedback. IC Role / Device Role / Timing Role: Sensor fusion hub combining A/D readings (NTC thermistors), LIN commands from HVAC controller, and motor drive timing. Use Value: Hardware LIN module offloads protocol handling from CPU, freeing cycles for adaptive calibration algorithms that improve cabin temperature stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21228JFP | Same core, memory, and peripherals; rated for -40°C to +85°C but uses J-version qualification (identical electrical specs). | No functional difference; J and D versions share identical package, pinout, and datasheet specifications. | Select R5F21228JFP only if legacy procurement systems require J-suffix part numbers; otherwise R5F21228DFP is functionally identical. |
| R5F21238DFP | Includes 2 KB data flash (1 KB × 2 blocks); otherwise identical ROM/RAM/peripherals/package. | Enables field firmware updates and parameter storage without external EEPROM-required for OTA-capable ECUs. | Choose R5F21238DFP when non-volatile data logging or bootloader update capability is mandatory; R5F21228DFP lacks data flash. |
Compared with R5F21228JFP, R5F21228DFP offers identical functionality with D-version marking; compared with R5F21238DFP, it omits data flash-making it suitable for cost-optimized, static-firmware applications where field updates are unnecessary.
Availability
R5F21228DFP is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O terminals, and motor feedback units requiring stable component supply across extended product lifecycles.
Supply support for R5F21228DFP 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 R5F21228DFP-is designed for cost-sensitive, real-time embedded control in automotive and industrial applications where CAN connectivity, analog sensing, and deterministic interrupt response are essential.
FAQ
What is the maximum operating frequency of the R5F21228DFP?
The R5F21228DFP operates at a maximum frequency of 20 MHz when supplied with 3.0–5.5 V, achieving a minimum instruction execution time of 50 ns. This frequency is supported by both the external crystal oscillator (XIN/XOUT) and the internal high-speed RC oscillator, which features software-adjustable frequency trimming for accuracy across voltage and temperature.
Does the R5F21228DFP include data flash memory?
No, the R5F21228DFP belongs to the R8C/22 Group and contains only 64 KB of program flash memory and 3 KB of RAM. It does not include data flash. For data flash capability (1 KB × 2 blocks), the pin-compatible R5F21238DFP from the R8C/23 Group must be selected instead.
What package type and dimensions does the R5F21228DFP use?
The R5F21228DFP is housed in a 48-pin plastic LQFP package designated PLQP0048KB-A: 7 mm × 7 mm body size with 0.5 mm pin pitch. This RoHS-compliant package supports standard reflow soldering profiles and provides adequate thermal dissipation for continuous operation at 20 MHz within its -40°C to +85°C ambient range.
Which communication interfaces are integrated into the R5F21228DFP?
The R5F21228DFP integrates UART0 (with LIN hardware support), UART1, I²C bus interface, clock synchronous serial I/O with chip select, and a full CAN 2.0B controller with 16 message slots. These interfaces enable direct connectivity to sensors, actuators, and vehicle networks without external protocol translators.
How many analog input channels does the R5F21228DFP support?
The R5F21228DFP includes a single 10-bit A/D converter with 12 analog input channels (AN0–AN11), accessible via dedicated pins across Port P0, P1, and P4. The converter supports single-ended sampling referenced to either AVCC or an external voltage applied to the VREF pin (Pin 40), enabling flexible sensor interfacing.
R5F21228DFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/2x/22
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- 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:
- 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:
R5F21228DFP#U0 FAQ
1.How can I place an order for R5F21228DFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21228DFP#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 R5F21228DFP#U0 reliable?
The price and inventory of R5F21228DFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21228DFP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21228DFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21228DFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21228DFP#U0?
R5F21228DFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21228DFP#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 R5F21228DFP#U0?
For technical support, including R5F21228DFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21228DFP#U0 requirements.
6.How does Aetrix verify that R5F21228DFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21228DFP#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 R5F21228DFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21228DFP#U0?
All R5F21228DFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21228DFP#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 R5F21228DFP#U0 part is unused and in its original packaging.
Return procedure for R5F21228DFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F21228DFP#U0 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…
