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Renesas R5F51103ADNF#20
- Part No.:
- R5F51103ADNF#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R5F51103ADNF#20.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:476
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Product details
Overview
R5F51103ADNF#20 from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 64 KB on-chip flash, 10 KB SRAM, 12-bit A/D converter with 14 channels, RTC, and dual SCI + I²C + RSPI interfaces. It targets low-power industrial sensing and control applications requiring deterministic real-time response and IEC 60730 compliance.
For engineers reviewing the R5F51103ADNF#20 datasheet, R5F51103ADNF#20 pinout, R5F51103ADNF#20 application, or R5F51103ADNF#20 equivalent, this page delivers verified specifications, package mapping, functional pin roles, and design-meaningful feature translation - all validated against Renesas R01DS0202EJ0120 Rev.1.20.
Technical Context
The R5F51103ADNF#20 implements a CISC Harvard-architecture RX core with five-stage pipeline, variable-length instructions, and 64-bit accumulator for single-cycle 32×32 multiply-accumulate operations. Its clock system integrates high-speed (32 MHz ±1%), sub-clock (32.768 kHz), and IWDT-dedicated (15 kHz) oscillators with CAC for frequency accuracy monitoring.
Peripheral integration includes MTU2 (4-channel 16-bit timer with phase counting and trigger generation), CMT (2-channel 16-bit compare match), DTC for interrupt-driven data transfers, and hardware CRC calculator supporting three polynomials. The device supports IEC 60730 Class B via LVD, IWDT, RAM test assist, and clock accuracy measurement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RX 32-bit CISC Harvard architecture with 5-stage pipeline and 64-bit accumulator for single-instruction 32×32 multiply-accumulate |
| Max Operating Frequency | 32 MHz at VCC ≥ 2.7 V; delivers 50 DMIPS with no wait states on flash/SRAM access |
| Memory | 64 KB on-chip flash (1.8 V programmable), 10 KB on-chip SRAM - both operate at full CPU speed without wait states |
| A/D Converter | 12-bit S12AD unit with 14 input channels, 1.0 µs minimum conversion time at 32 MHz ADCLK, double-trigger mode for motor control |
| Communication | SCIe ×2 (asynchronous/clock-sync/Smart Card), SCIf ×1, RIIC ×1 (400 kbps SMBus-compatible), RSPI ×1 (16 Mbps master/slave) |
| Timers & RTC | MTU2 ×1 (4-channel 16-bit with input capture/output compare/phase counting), CMT ×2 (16-bit), RTCA with calendar/binary modes and software-standby wake-up |
| Power & Temp | 1.8–3.6 V supply; −40°C to +85°C (D-grade); software standby current = 0.35 µA; recovery time = 4.8 µs |
Pinout & Package
Packaged in 40-pin HWQFN (PWQN0040KC-A), 6 × 6 mm body, 0.5 mm pitch, exposed thermal pad (to be connected to VSS). Pin count and peripheral channel count align with Table 1.2 for 40-pin variants: 28 I/O pins, 10 A/D channels (6 high-precision), SCI ×1 (SCI12 only), RSPI ×1 (SSLA1–SSLA3 not supported), RIIC ×1, MTU2 ×4, CMT ×2, RTCA supported.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: VCC powers digital logic; VSS reference for analog/digital sections; exposed pad must connect to VSS for thermal and noise integrity |
| XTAL / EXTAL | Main crystal oscillator interface | Supports external crystal up to 20 MHz or direct clock input; enables precise timing for RTC and system clock derivation |
| XCIN / XCOUT | Sub-clock oscillator interface | 32.768 kHz crystal connection for RTC calendar mode and low-power wake-up timing |
| RES# | Active-low reset input | Asynchronous hardware reset; initiates POR, LVD, and IWDT reset sequences; requires external pull-up |
| MD | Mode selection | Fixed at power-on to select single-chip mode; must remain static during operation per datasheet requirement |
| SCK12 / RXD12 / TXD12 | SCIf serial interface | Full-duplex asynchronous/clock-synchronous interface on dedicated pins - used when SCI1/SCI5 are unavailable in 40-pin variant |
| AN000–AN007 | Analog input channels | 8 of 10 A/D inputs mapped to physical pins; support differential or single-ended acquisition with internal reference options (VREFH0/VREFL0) |
| MTIOC0A / MTIOC0B | MTU2 channel 0 PWM outputs | Configurable complementary PWM outputs with dead-time insertion capability - critical for motor gate drive control |
Key Features
| Feature | Design Value |
|---|---|
| IEC 60730 Class B Support | Integrated LVD, IWDT with dedicated 15 kHz oscillator, CAC for clock monitoring, and RAM test assist enable certified safety-critical firmware execution |
| Low-Power Software Standby | 0.35 µA quiescent current with RTC active and 4.8 µs wake-up latency - enables battery-powered sensor nodes with multi-year runtime |
| Hardware CRC Acceleration | Three selectable polynomials (CRC-8/CRC-16 variants) with LSB/MSB-first support - offloads checksum computation from CPU for robust firmware updates and communication |
| Multi-Function Pin Controller (MPC) | Per-pin peripheral function assignment allows dynamic reconfiguration of SCI/I²C/RSPI/MTU signals without PCB redesign - simplifies prototyping and variant management |
| Temperature Sensor Integration | On-die temperature sensor digitized by shared 12-bit A/D converter - provides system thermal monitoring without external components |
| Unique 32-Byte ID | Factory-programmed immutable identifier enables secure device authentication, firmware binding, and traceability in production and field deployment |
Applications
| Industrial Sensor Node | Smart Meter Interface |
|---|---|
Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and voltage data every 10 seconds. IC Role / Device Role / Timing Role: Central MCU executing sensor polling, A/D conversion, RTC-timed data logging, and low-power wake-up scheduling. Use Value: 0.35 µA software standby current and 4.8 µs wake-up enable >5-year battery life; integrated temperature sensor eliminates external component. |
Use Scenario: Communication interface module in electricity meter connecting metrology IC via SPI and PLC modem via UART. IC Role / Device Role / Timing Role: Protocol bridge managing RSPI-to-SCI data translation, CRC validation, and secure firmware update handling. Use Value: Hardware CRC engine ensures data integrity over noisy PLC lines; dual SCI channels allow simultaneous modem and debug port operation. |
| Home Appliance Control | Medical Diagnostic Peripheral |
Use Scenario: Motor control and user interface in compact HVAC blower unit with speed regulation and fault reporting. IC Role / Device Role / Timing Role: Real-time PWM generator (MTU2), A/D supervisor for current/voltage feedback, and watchdog-protected state machine. Use Value: MTU2 phase-counting mode enables precise BLDC commutation; IWDT with dedicated oscillator guarantees fail-safe shutdown under firmware lockup. |
Use Scenario: Portable ECG front-end acquiring analog biopotential signals and transmitting digitized waveforms via I²C to host processor. IC Role / Device Role / Timing Role: Signal conditioning controller performing 12-bit A/D sampling, digital filtering (via DTC-assisted memory moves), and I²C slave interface. Use Value: 1.0 µs A/D conversion time supports >1 MSPS effective sampling; 5-V tolerant I/O simplifies level-shifting with host SoC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F51103ADFM#30 | Same RX110 core, 64 KB flash/10 KB RAM, but in 64-pin LFQFP (PLQP0064KB-A); adds SCI1/SCI5, MTU2 channel 5, and 14 A/D channels | Supports higher peripheral density: dual SCI, full MTU2 feature set, and extended analog input count - suitable for complex control systems | Select when board layout accommodates larger package and additional peripherals are required; not pin-compatible with R5F51103ADNF#20 |
| R5F51101ADNF#U0 | Same 40-pin HWQFN package and pinout, but reduced memory: 32 KB flash/10 KB RAM; identical peripheral count and clock specs | Matches footprint and I/O for cost-sensitive designs where firmware size <32 KB and no future expansion is needed | Drop-in replacement for memory-constrained applications; identical thermal/mechanical behavior and PCB layout reuse possible |
Compared with R5F51103ADNF#20, R5F51103ADFM#30 offers greater peripheral scalability at the cost of larger footprint and layout change, while R5F51101ADNF#U0 provides identical mechanical fit with halved flash capacity - enabling tiered product variants without redesign.
Availability
R5F51103ADNF#20 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interfaces, and home appliance controllers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R5F51103ADNF#20 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RX110 Group, including R5F51103ADNF#20, is engineered for ultra-low-power, safety-certifiable embedded control in space-constrained industrial and consumer devices - emphasizing IEC 60730 compliance, fast wake-up, and rich analog/motor control peripherals.
FAQ
What is the maximum operating frequency and power supply range for the R5F51103ADNF#20?
The R5F51103ADNF#20 operates at up to 32 MHz when supplied with 2.7–3.6 V, delivering 50 DMIPS performance. At 2.4–2.7 V, max frequency is 16 MHz; at 1.8–2.4 V, it is limited to 8 MHz. Supply current is 3.2 mA (typ.) at 32 MHz, and software standby current is 0.35 µA - all specified across −40°C to +85°C ambient.
Does the R5F51103ADNF#20 support IEC 60730 Class B functional safety requirements?
Yes, the R5F51103ADNF#20 includes hardware features required for IEC 60730 Class B compliance: independent watchdog timer (IWDT) with dedicated 15 kHz oscillator, low-voltage detection (LVD) with configurable thresholds, clock frequency accuracy measurement circuit (CAC), and RAM test assist functions - all documented in Renesas Application Note R01AN1907.
What are the A/D converter capabilities of the R5F51103ADNF#20?
The R5F51103ADNF#20 integrates a 12-bit S12AD unit with 10 input channels (6 high-precision), minimum conversion time of 1.0 µs at 32 MHz ADCLK, and double-trigger mode for redundant sampling in motor control. Input voltage range is 0–VREFH0, with VREFH0/VREFL0 pins configurable to AVCC0/AVSS0 or external references.
Which communication interfaces are available on the R5F51103ADNF#20 in its 40-pin HWQFN package?
In the PWQN0040KC-A package, the R5F51103ADNF#20 supports SCI12 (1 channel), RIIC (1 channel, 400 kbps), and RSPI (1 channel, 16 Mbps). SCI1 and SCI5 are not available in this variant per Table 1.2; SSLA1–SSLA3 are also disabled. All interfaces share multiplexed pins managed by the MPC.
What is the purpose of the CACREF pin on the R5F51103ADNF#20?
The CACREF pin on the R5F51103ADNF#20 serves as the reference input for the Clock Accuracy Measurement Circuit (CAC), enabling real-time monitoring of main clock oscillator deviation against an external precision reference. This supports IEC 60730 clock supervision and fail-safe system responses when frequency drift exceeds tolerance.
R5F51103ADNF#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 40-WFQFN Exposed Pad
- Series:
- RX110
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- RX
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, SCI, SPI
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 28
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 10K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 10x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F51103ADNF#20 FAQ
1.How can I place an order for R5F51103ADNF#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F51103ADNF#20 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 R5F51103ADNF#20 reliable?
The price and inventory of R5F51103ADNF#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F51103ADNF#20 is usually 5 days.
3.What payment methods are accepted for R5F51103ADNF#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F51103ADNF#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F51103ADNF#20?
R5F51103ADNF#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F51103ADNF#20 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 R5F51103ADNF#20?
For technical support, including R5F51103ADNF#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F51103ADNF#20 requirements.
6.How does Aetrix verify that R5F51103ADNF#20 is sourced from the original manufacturer or authorized distributors?
All R5F51103ADNF#20 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 R5F51103ADNF#20 meets industry standards.
7.What is the process for return or replacement of R5F51103ADNF#20?
All R5F51103ADNF#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F51103ADNF#20, 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 R5F51103ADNF#20 part is unused and in its original packaging.
Return procedure for R5F51103ADNF#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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