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Renesas R5F21102DFP#U0
- Part No.:
- R5F21102DFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R5F21102DFP#U0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,157
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Product details
Overview
R5F21102DFP#U0 from Renesas Electronics is a 16-bit R8C/Tiny Series microcontroller in a 32-pin LQFP package, operating at up to 16 MHz with 8 KB flash memory and 512 bytes RAM. It integrates an 8-channel 10-bit ADC, three 8-bit timers (X/Y/Z), one 16-bit timer C, dual UART interfaces, LED drive ports, and operates across –40°C to +85°C for industrial-grade embedded control.
For engineers reviewing the R5F21102DFP#U0 datasheet, R5F21102DFP#U0 pinout, R5F21102DFP#U0 application, or R5F21102DFP#U0 equivalent, key selection criteria include its D-version extended temperature range, on-chip oscillator support, low-power stop mode (0.7 µA), and compatibility with Renesas' R8C/10 Group development tools and debug infrastructure.
Technical Context
The R5F21102DFP#U0 implements the R8C/Tiny CPU core with 89 basic instructions and executes at 62.5 ns minimum instruction time (16 MHz, VCC = 3.0–5.5 V). Its memory map provides 1 MB address space, with fixed interrupt vector table at 0FFDC16–0FFFF16, flash starting at 0C00016, and RAM at 0040016.
Peripheral integration includes two independent UART channels (one clock-synchronous capable), 22 I/O pins (8 with LED drive capability), watchdog timer with prescaler, main clock oscillation stop detection, and dual clock generation circuits - one with built-in feedback resistor for external crystal/resonator and one on-chip oscillator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny 16-bit, 89 instructions, register bank switching support |
| Flash Memory | 8 KB - sufficient for mid-complexity firmware with bootloader and parameter storage |
| RAM | 512 bytes - supports stack, local variables, and small data buffers in real-time tasks |
| ADC | 10-bit, 8-channel - enables analog sensor monitoring without external converters |
| Timers | Three 8-bit (X/Y/Z) + one 16-bit (C) - supports PWM generation, input capture, and interval timing |
| UART Interfaces | Dual UART (UART0 + UART1), one configurable for clock-synchronous serial I/O - enables host communication and peripheral bridging |
| Operating Temp | –40°C to +85°C (D-version) - qualified for industrial environments with thermal cycling |
| Supply Voltage | 2.7–5.5 V - compatible with both 3.3 V and 5 V system rails without level shifting |
Pinout & Package
Package: 32-pin plastic LQFP (PLQP0032GB-A / 32P6U-A), 7 mm × 7 mm, 0.8 mm pitch, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XIN / P46 | Main clock input | Accepts external crystal (1–20 MHz) or ceramic resonator; required for precise timing |
| XOUT / P47 | Main clock output | Drives external crystal/resonator; functions as input-only port when not used for clock |
| RESET | Active-low reset input | Asynchronous reset; requires external pull-up and debounced assertion for reliable startup |
| VCC, VSS | Digital power supply | Core logic supply (2.7–5.5 V); VSS is ground reference for digital circuitry |
| AVCC, AVSS, VREF | Analog power & reference | Separate analog supply pins reduce noise coupling into ADC; VREF tied to VCC for internal reference |
| P00–P07 | 8-bit analog/digital I/O port | AN0–AN7 multiplexed; supports ADC inputs and general-purpose CMOS I/O with programmable pull-ups |
| P10–P17 | 8-bit I/O port with LED drive | Capable of sink current up to 20 mA per pin - directly drives LEDs without external drivers |
| RxD0/TxD0 | UART0 serial interface | Full-duplex asynchronous communication; supports standard baud rates up to 115.2 kbps |
| RxD1/TxD10/TxD11 | UART1 serial interface | Supports either UART or clock-synchronous serial mode; TxD11 doubles as analog input AN7 |
| INT0–INT3, KI0–KI3 | Interrupt inputs | Five external interrupt sources plus four key-input interrupts with noise filtering - ideal for keypad scanning |
Key Features
| Feature | Design Value |
|---|---|
| On-chip oscillator | Enables immediate operation without external crystal - reduces BOM count and board area |
| Wait/Stop low-power modes | 35 µA (Wait, peripheral clocks off) and 0.7 µA (Stop) - extends battery life in portable equipment |
| LED drive ports (P10–P17) | Direct 20 mA sink capability per pin - eliminates discrete driver transistors in status indicator designs |
| Oscillation stop detection | Hardware-monitored XIN/XOUT failure triggers reset - prevents system hang due to clock loss |
| Flash endurance | 100 program/erase cycles - suitable for field firmware updates with wear-leveling management |
| Interrupt priority levels | 7-level nested priority - enables deterministic real-time response to mixed-criticality events |
Applications
| Home Appliance Control | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Microcontroller in washing machine mainboard managing motor control, water valve sequencing, and user interface. IC Role / Device Role / Timing Role: Central real-time controller executing state machines, reading front-panel keys, driving LEDs, and sampling temperature/humidity sensors via ADC. Use Value: Integrated UART enables diagnostics over service port; LED drive ports simplify UI hardware; 8 KB flash accommodates safety-certified firmware. |
Use Scenario: Standalone environmental monitor logging temperature, humidity, and CO₂ in HVAC ducts or factory floors. IC Role / Device Role / Timing Role: Data acquisition node performing periodic ADC sampling, timestamping with Timer C, and transmitting results via UART to gateway. Use Value: –40°C to +85°C rating ensures reliability in unconditioned spaces; low-power Stop mode extends battery life for wireless variants. |
| Office Equipment Motor Control | Security System Keypad Scanner |
|
Use Scenario: Paper feed and jam detection subsystem in multifunction printers. IC Role / Device Role / Timing Role: Dedicated motion controller reading optical encoders, driving stepper coils via GPIO, and detecting paper edge transitions using INT inputs. Use Value: Dual UART allows coordination with main SoC; 16-bit Timer C provides precise pulse-width modulation for motor speed regulation. |
Use Scenario: Entry keypad module validating PIN codes and signaling access granted/denied to door lock actuator. IC Role / Device Role / Timing Role: Keypad scanner using KI0–KI3 for matrix row/column scanning with built-in noise filtering and wake-on-key interrupt. Use Value: Four dedicated key-interrupt inputs eliminate polling overhead; 512-byte RAM stores encrypted key buffer and state flags securely. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21102FP | Same core, flash, and peripherals but rated for –20°C to +85°C only; no D-version temperature extension | Suitable for indoor consumer electronics where ambient extremes are controlled | Select R5F21102FP if operating environment stays above –20°C and cost optimization is prioritized |
| R5F21103DFP | Identical package and temperature grade, but with 12 KB flash and 768 bytes RAM - 50% more code/data space | Better suited for applications requiring larger firmware (e.g., USB stack, encryption, OTA update handler) | Choose R5F21103DFP when firmware growth exceeds 8 KB or additional RAM is needed for buffering or multitasking |
Compared with R5F21102DFP#U0, R5F21102FP lacks extended temperature qualification and R5F21103DFP offers greater memory headroom - both share identical pinout, peripheral set, and debug infrastructure, enabling scalable design reuse.
Availability
R5F21102DFP#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance mainboards, and security keypad modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F21102DFP#U0 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 R5F21102DFP#U0 belongs to the R8C/10 Group - a cost-optimized 16-bit MCU family designed for resource-constrained embedded control in appliances, office equipment, and industrial sensors.
FAQ
What is the maximum operating frequency of the R5F21102DFP#U0?
The R5F21102DFP#U0 supports a maximum external clock frequency of 16 MHz at VCC = 3.0–5.5 V, delivering a minimum instruction execution time of 62.5 ns. At lower supply voltages (2.7–5.5 V), it operates up to 10 MHz with 100 ns instruction timing. The on-chip oscillator provides a default ~1 MHz RC clock for initialization before main clock stabilization.
Does the R5F21102DFP#U0 support in-circuit debugging?
Yes, the R5F21102DFP#U0 supports on-chip debugging via Renesas' E8/E8a debug interface. Pins P00/AN7/TxD11 and P37/TxD10/RxD1 are reserved for debug communication and must not be used for application I/O when debugging is active. Debug functionality includes breakpoint setting, register inspection, and flash programming.
How many analog input channels does the R5F21102DFP#U0 ADC support?
The R5F21102DFP#U0 integrates a single 10-bit successive-approximation ADC with 8 selectable input channels (AN0–AN7), mapped to P00–P07. Conversion is software-triggered or synchronized to timer events, with result stored in a 16-bit register. Reference voltage is internally derived from VCC unless externally applied to VREF.
What are the power supply requirements for the R5F21102DFP#U0 analog section?
The R5F21102DFP#U0 requires separate analog power connections: AVCC and AVSS must be decoupled with 0.1 µF capacitors and tied to VCC and VSS respectively. VREF serves as the ADC reference and is typically connected to VCC. Noise isolation between digital and analog supplies is critical for achieving full 10-bit linearity and minimizing conversion error.
Is the R5F21102DFP#U0 pin-compatible with other R8C/10 Group MCUs?
Yes, all R8C/10 Group devices in the PLQP0032GB-A (32-pin LQFP) package - including R5F21102FP, R5F21103DFP, and R5F21104DFP - share identical pin assignments and electrical characteristics. Firmware and PCB layouts are interchangeable across this footprint, enabling memory-scaling upgrades without hardware revision.
R5F21102DFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- R8C/1x/10
- Packaging:
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- SIO, UART/USART
- Peripherals:
- LED, WDT
- Number of I/O:
- 22
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21102DFP#U0 FAQ
1.How can I place an order for R5F21102DFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21102DFP#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 R5F21102DFP#U0 reliable?
The price and inventory of R5F21102DFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21102DFP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21102DFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21102DFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21102DFP#U0?
R5F21102DFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21102DFP#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 R5F21102DFP#U0?
For technical support, including R5F21102DFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21102DFP#U0 requirements.
6.How does Aetrix verify that R5F21102DFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21102DFP#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 R5F21102DFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21102DFP#U0?
All R5F21102DFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21102DFP#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 R5F21102DFP#U0 part is unused and in its original packaging.
Return procedure for R5F21102DFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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