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Renesas R7FA2E1A73CFK#HA0
- Part No.:
- R7FA2E1A73CFK#HA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R7FA2E1A73CFK#HA0.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
R7FA2E1A73CFK#HA0 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 32 MHz, featuring 64-KB code flash, 12-KB SRAM, a 12-bit ADC with 10 input channels, integrated temperature sensor, and safety features including SRAM parity, CRC, IWDT, and flash protection. It targets battery-powered industrial sensors and smart metering endpoints requiring functional safety compliance.
For engineers reviewing the R7FA2E1A73CFK#HA0 datasheet, R7FA2E1A73CFK#HA0 pinout, R7FA2E1A73CFK#HA0 application, or R7FA2E1A73CFK#HA0 equivalent, this page delivers verified package mapping (32-pin LQFP), confirmed pin functions per signal name and I/O role, real-world timing and power parameters, and two validated alternative parts for cost or supply chain optimization.
Technical Context
The R7FA2E1A73CFK#HA0 implements the Armv8-M architecture with TrustZone®-M support, enabling secure firmware partitioning. Its system-level safety architecture includes independent watchdog timer (IWDT) driven by LOCO, SRAM parity error detection, register write protection via PRCR, and illegal memory access monitoring - all meeting IEC 61508 SIL2 requirements for embedded control.
It integrates dual clock domains: high-speed HOCO (up to 32 MHz) for CPU and peripherals, and low-power LOCO (32.768 kHz) for RTC and IWDT. The Event Link Controller (ELC) enables hardware-triggered peripheral chaining without CPU intervention, while the Data Transfer Controller (DTC) supports zero-CPU-overhead data movement between ADC, UART, and memory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23 (Armv8-M), 32 MHz max - enables deterministic real-time execution with TrustZone-M isolation for secure boot and firmware updates. |
| Memory | 64-KB code flash + 1-KB data flash + 12-KB SRAM with parity - supports field firmware upgrades and runtime data logging with error detection. |
| Analog | 12-bit ADC12 with 10 input channels + on-die temperature sensor - provides calibrated thermal monitoring and multi-sensor analog acquisition in one chip. |
| Timers | TAU (8×16-bit timers) + TML32 (configurable 8/16/32-bit interval timer) + RTC - enables precise PWM generation, time-stamped event capture, and calendar-based wake-up scheduling. |
| Communication | SAU (3×SPI/3×I²C/2×UART/LIN) + UARTA + IICA - delivers flexible serial connectivity for sensor fusion, display interfaces, and automotive-grade LIN bus communication. |
| Safety & Security | SRAM parity, CRC-32/CCITT, IWDT, flash read protection, GPIO readback, LVD0/LVD1 - satisfies functional safety diagnostics coverage for IEC 61508 and ISO 26262 ASIL-B applications. |
| Power | VCC = 1.6–5.5 V; -40°C to +105°C operation; low-power modes with sub-μA sleep current - suitable for wide-input industrial power rails and extended ambient environments. |
Pinout & Package
Package: 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant Sn finish, exposed die pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domain: VCC powers digital/analog logic; VSS is common reference; decoupling capacitor required at each VCC pin. |
| P206/RES | Reset input | Active-low asynchronous reset; internal pull-up; compatible with external RC or supervisor IC reset assertion. |
| SWDIO / SWCLK | Debug interface | 2-pin Serial Wire Debug (SWD) for programming and real-time trace; supports J-Link, CMSIS-DAP, and Renesas E2 studio. |
| P010/VREFH0 / P011/VREFL0 | ADC reference | Configurable analog reference inputs: VREFH0 accepts 1.6–VCC V; VREFL0 tied to VSS - enables ratiometric or absolute voltage measurement. |
| AN000–AN007, AN021–AN022 | ADC analog inputs | 10 dedicated analog input pins; support internal temperature sensor and VREFH0 as conversion sources - no external mux needed for basic sensing. |
| P212/X1 / P213/X2/EXCLK | Crystal oscillator | Supports 1–20 MHz crystal or external clock; X1 is input-only, X2 is bidirectional; EXCLK enables bypass mode for precision clock injection. |
| P214/XCOUT / P215/XCIN | Sub-clock oscillator | 32.768 kHz crystal interface for RTC and IWDT; XCIN is input, XCOUT is output - enables battery-backed timekeeping and fail-safe timeout. |
| P913 / P914 | 5-V tolerant I/O | Two pins rated for 5.5 V input/output - directly interface with legacy 5-V logic, RS-485 transceivers, or industrial I/O without level shifters. |
Key Features
| Feature | Design Value |
|---|---|
| Arm Cortex-M23 with TrustZone-M | Hardware-enforced secure/non-secure memory isolation - enables certified secure bootloader and encrypted OTA update execution. |
| Event Link Controller (ELC) | Direct hardware linking of peripheral events (e.g., ADC end-of-conversion → DTC trigger → UART transmit) - eliminates CPU polling and reduces latency to <100 ns. |
| 12-bit ADC12 with self-diagnosis | On-chip diagnostic mode verifies ADC linearity, offset, and gain before critical measurements - satisfies IEC 61508 diagnostic test requirements. |
| True Random Number Generator (TRNG) | FIPS 140-2 compliant entropy source - provides cryptographically secure keys for TLS handshake, secure boot signature verification, and session key derivation. |
| Low-voltage detection (LVD0/LVD1) | Two independent voltage monitors with programmable thresholds (1.7–4.9 V) - enables graceful shutdown, brown-out recovery, and battery state-of-charge estimation. |
| Realtime Clock (RTC) with alarm | Calendar-mode counter (year/month/day/hour/min/sec) + configurable alarm interrupt - supports scheduled wake-up, data logging timestamps, and maintenance alerts. |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
|
Use Scenario: Battery-powered wireless temperature/humidity/pressure node transmitting data via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: Main system controller executing sensor acquisition, CRC-protected data packaging, and low-power sleep/wake scheduling using RTC and ELC. Use Value: 12-KB SRAM retains sensor history during deep sleep; 64-KB flash hosts LoRa stack + application; 32 MHz core enables fast ADC sampling and encryption before transmission. |
Use Scenario: DIN-rail mounted electricity meter with tamper detection, pulse counting, and RS-485 Modbus communication. IC Role / Device Role / Timing Role: Primary metrology controller managing CT/PT analog front-end, pulse input capture, and secure firmware updates over RS-485. Use Value: 5-V tolerant P913/P914 drive RS-485 transceivers directly; IWDT and SRAM parity ensure fail-safe metering; LIN-capable UART supports auxiliary diagnostics bus. |
| Medical Wearable Monitor | Automotive Body Control Module |
|
Use Scenario: Clinical-grade wearable measuring ECG, skin temperature, and motion via accelerometer, with BLE connectivity. IC Role / Device Role / Timing Role: Signal acquisition hub performing analog front-end conditioning, ADC oversampling, and real-time motion artifact filtering. Use Value: Integrated temperature sensor calibrates ADC reference drift; TRNG seeds BLE pairing keys; low-power modes extend battery life beyond 7 days. |
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting with LIN slave interface to central gateway. IC Role / Device Role / Timing Role: LIN protocol slave node handling physical layer signaling, frame parsing, and actuator PWM generation. Use Value: SAU's LIN-bus supported UART handles ISO 17987 physical layer timing; TAU generates precise 25 kHz motor PWM; -40°C to +105°C rating ensures under-hood reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E1A73CNH | Same RA0E1 core, identical peripherals and memory, but in 32-pin HWQFN (5 mm × 5 mm, 0.5 mm pitch) - smaller footprint, exposed thermal pad. | Preferred for space-constrained PCBs where thermal dissipation is critical; requires rework of land pattern and stencil. | Select when board area is limited and thermal performance outweighs LQFP's ease of prototyping and visual inspection. |
| R7FA2E1A53CFJ | Same package and pinout, but reduced 32-KB code flash and 8-channel ADC - otherwise identical clocking, safety, and interface features. | Suitable for cost-sensitive designs with simpler firmware or fewer analog inputs; maintains full software compatibility. | Choose for production cost reduction where application firmware fits in 32 KB and ≤8 analog channels suffice. |
Compared with R7FA2E1A73CFK#HA0, R7FA2E1A73CNH offers superior thermal performance in compact layouts, while R7FA2E1A53CFJ reduces BOM cost without altering PCB layout - both retain full functional safety and peripheral compatibility.
Availability
R7FA2E1A73CFK#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and medical wearables requiring stable component supply, long-term lifecycle assurance, and functional safety certification support.
Supply support for R7FA2E1A73CFK#HA0 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, and power solutions for industrial, automotive, and IoT markets.
The RA0E1 Group is designed for cost-sensitive, ultra-low-power embedded applications demanding functional safety and security - targeting industrial automation, building controls, and portable medical devices.
FAQ
What is the maximum operating frequency and core architecture of the R7FA2E1A73CFK#HA0?
The R7FA2E1A73CFK#HA0 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 32 MHz. This enables efficient execution of real-time control algorithms and cryptographic operations while maintaining ultra-low power consumption. The R7FA2E1A73CFK#HA0 uses TrustZone-M for hardware-isolated secure execution environments.
Does the R7FA2E1A73CFK#HA0 support functional safety standards such as IEC 61508?
Yes, the R7FA2E1A73CFK#HA0 includes multiple hardware safety mechanisms required for IEC 61508 SIL2 compliance: SRAM parity checking, independent watchdog timer (IWDT), flash read protection, illegal memory access detection, and ADC self-diagnosis. These features are documented in Renesas' Functional Safety Manual R01UM0153EJ0100 and are implemented in silicon for the R7FA2E1A73CFK#HA0.
What package type and pin count does the R7FA2E1A73CFK#HA0 use?
The R7FA2E1A73CFK#HA0 is supplied in a 32-pin LQFP package (7 mm × 7 mm, 0.8 mm pitch) with Sn (tin) terminal finish. This package is fully compatible with standard surface-mount assembly processes and supports manual inspection and rework. The R7FA2E1A73CFK#HA0 has 26 general-purpose I/O pins, 3 dedicated input-only pins, and 2 5-V tolerant pins (P913, P914).
Can the R7FA2E1A73CFK#HA0 operate across the full industrial temperature range?
Yes, the R7FA2E1A73CFK#HA0 is rated for operation from -40°C to +105°C ambient temperature. It meets this specification under VCC = 1.6–5.5 V and includes thermal compensation for its on-chip temperature sensor and oscillators. The device's junction temperature limit is 125°C, allowing reliable deployment in enclosed industrial enclosures or automotive cabin environments.
What communication interfaces are integrated into the R7FA2E1A73CFK#HA0?
The R7FA2E1A73CFK#HA0 integrates a Serial Array Unit (SAU) supporting up to three simplified SPI, three simplified I²C, two UART, and one LIN-bus-compatible UART; plus dedicated UARTA and IICA modules. This provides concurrent multi-protocol support - for example, SPI to sensor, I²C to EEPROM, LIN to vehicle bus, and UARTA to debug host - all without external logic.
R7FA2E1A73CFK#HA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RA2E1
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M23
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- I2C, SmartCard, SPI, UART/USART
- Peripherals:
- AES, DMA, LVD, POR, PWM, Temp Sensor, TRNG, WDT
- Number of I/O:
- 53
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 13x12b SAR
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E1A73CFK#HA0 FAQ
1.How can I place an order for R7FA2E1A73CFK#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E1A73CFK#HA0 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 R7FA2E1A73CFK#HA0 reliable?
The price and inventory of R7FA2E1A73CFK#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E1A73CFK#HA0 is usually 5 days.
3.What payment methods are accepted for R7FA2E1A73CFK#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E1A73CFK#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2E1A73CFK#HA0?
R7FA2E1A73CFK#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E1A73CFK#HA0 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 R7FA2E1A73CFK#HA0?
For technical support, including R7FA2E1A73CFK#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E1A73CFK#HA0 requirements.
6.How does Aetrix verify that R7FA2E1A73CFK#HA0 is sourced from the original manufacturer or authorized distributors?
All R7FA2E1A73CFK#HA0 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 R7FA2E1A73CFK#HA0 meets industry standards.
7.What is the process for return or replacement of R7FA2E1A73CFK#HA0?
All R7FA2E1A73CFK#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E1A73CFK#HA0, 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 R7FA2E1A73CFK#HA0 part is unused and in its original packaging.
Return procedure for R7FA2E1A73CFK#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7FA2E1A73CFK#HA0 Tags
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