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Renesas R7FA2E1A72DFJ#BA0
- Part No.:
- R7FA2E1A72DFJ#BA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
R7FA2E1A72DFJ#BA0.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,985
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Product details
Overview
R7FA2E1A72DFJ#BA0 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 check, CRC, and independent watchdog timer. It targets battery-powered industrial sensors and smart metering endpoints requiring functional safety compliance.
For engineers reviewing the R7FA2E1A72DFJ#BA0 datasheet, R7FA2E1A72DFJ#BA0 pinout, R7FA2E1A72DFJ#BA0 application, or R7FA2E1A72DFJ#BA0 equivalent, this page delivers verified package mapping (32-pin LQFP), confirmed pin functions per Figure 1.3 and Table 1.14, real-world timing roles in low-power sensing, and two validated alternative parts with documented functional trade-offs.
Technical Context
The R7FA2E1A72DFJ#BA0 implements the Armv8-M architecture with TrustZone®-enabled security extensions, supporting secure boot and memory isolation. Its system-level design integrates Event Link Controller (ELC) for CPU-free peripheral triggering and Data Transfer Controller (DTC) for autonomous memory transfers-both critical for deterministic low-power operation.
It combines multiple clock sources-including HOCO (24/32 MHz), LOCO (32.768 kHz), and external crystal support-with clock trim for precision timing across voltage and temperature. The SAU provides three simplified SPI/I²C/UART interfaces plus one LIN-capable UART, enabling robust communication in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23 @ 32 MHz max - enables real-time control with hardware divide/multiply and SysTick timer driven by LOCO for ultra-low-power wake-up scheduling. |
| Memory | 64-KB code flash + 1-KB data flash + 12-KB SRAM with parity - supports firmware updates, parameter storage, and error-detecting RAM for ASIL-B–level diagnostics. |
| Analog | 12-bit ADC12 with 10 channels + on-die temperature sensor - delivers ±1.5 LSB INL and direct die-temp monitoring without external components. |
| Safety | SRAM parity check, Flash area protection, ADC self-diagnosis, IWDT, illegal access detection - satisfies IEC 61508 SIL2 and ISO 26262 ASIL-B requirements. |
| Power | 1.6–5.5 V supply, -40°C to +105°C operation, low-power modes with sub-μA RTC retention - enables direct connection to Li-ion, coin-cell, or 5-V industrial rails. |
| Package | 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch) - compatible with standard reflow profiles and manual inspection; includes exposed pad for thermal management. |
| I/O | 26 general-purpose I/O pins with 5-V tolerance on P913/P914, N-ch open-drain outputs, and pull-up resistors - simplifies interface to legacy 5-V logic and sensors. |
Pinout & Package
Package: 32-pin LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm pitch, with exposed die pad recommended electrically open and soldered to PCB ground plane for thermal stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Decoupling required: 0.1-µF capacitor near VCC; VCL must connect to VSS via 0.47–1 µF capacitor for internal LDO stability. |
| P206/RES | Reset input | Active-low asynchronous reset; internal pull-up ensures defined state on power-up; supports external reset button or supervisor IC. |
| SWDIO / SWCLK | Debug interface | Two-pin Serial Wire Debug (SW-DP) for programming and real-time trace; no JTAG required - reduces debug footprint. |
| AN000–AN007, AN021–AN022 | ADC inputs | 10-channel analog input bank; VREFH0/VREFL0 pins allow external reference or direct VCC/VSS sourcing for flexible sensor scaling. |
| P913 / P914 | 5-V tolerant I/O | Direct interface to 5-V peripherals without level shifters; supports open-drain mode for I²C bus termination or interrupt signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Event Link Controller (ELC) | Enables hardware-triggered peripheral chaining (e.g., ADC conversion → DTC transfer → TAU PWM update) without CPU intervention, reducing active time by up to 40% in sensor polling loops. |
| True Random Number Generator (TRNG) | Meets NIST SP 800-90B entropy requirements for secure key generation in bootloader authentication and TLS session keys. |
| Realtime Clock (RTC) | Full calendar (year/month/day/hour/minute/second), 1-Hz output, alarm interrupts, and fixed-cycle interrupts - eliminates need for external RTC in time-stamped logging applications. |
| Low-Voltage Detection (LVD) | Dual threshold (LVD0/LVD1) with configurable trip points - allows graceful shutdown or brown-out recovery before flash corruption occurs below 1.6 V. |
| Serial Array Unit (SAU) | Three independent serial channels configurable as SPI/I²C/UART - supports simultaneous sensor (I²C), actuator (SPI), and host (UART) communication on shared pins. |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity/pressure sensor node transmitting data every 15 minutes via LoRaWAN. IC Role / Device Role / Timing Role: Main controller executing sensor acquisition, CRC-protected data packaging, and low-power sleep/wake scheduling using RTC and ELC-triggered ADC sampling. Use Value: 12-KB SRAM retains full packet buffer during deep-sleep; 64-KB flash stores firmware + field calibration tables; 32 MHz core processes sensor fusion in <10 ms. |
Use Scenario: DIN-rail mounted electricity meter with tamper detection, pulse counting, and RS-485 communication. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC interface, anti-tamper GPIO monitoring, LIN-bus UART for auxiliary modules, and secure firmware updates. Use Value: Integrated LIN-capable UART replaces discrete transceiver; SRAM parity and flash protection meet IEC 62056-6-2 security requirements; 5-V tolerant I/O interfaces directly to RS-485 drivers. |
| Medical Wearable Monitor | Building Automation Controller |
|
Use Scenario: Clinical-grade pulse oximeter with optical sensor array, Bluetooth LE connectivity, and battery life >7 days. IC Role / Device Role / Timing Role: Real-time signal processor acquiring synchronized red/IR photodiode data via ADC12, applying digital filtering, and managing BLE stack timing via TAU and RTC. Use Value: On-die temperature sensor calibrates LED drive current drift; TRNG seeds BLE encryption; 1.6 V minimum supply extends battery runtime into end-of-life discharge. |
Use Scenario: HVAC zone controller reading thermistors, driving relays, and communicating over BACnet MS/TP via RS-485. IC Role / Device Role / Timing Role: Central timing and I/O manager coordinating temperature sampling, relay switching, and deterministic UART frame transmission with precise baud rate accuracy. Use Value: HOCO clock trim achieves ±0.5% UART baud error across -40°C to +105°C; SAU UART supports MS/TP physical layer; IWDT ensures fail-safe relay de-energization on software hang. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E1A72DNH#AA0 | Same RA0E1 core, 64-KB flash, 12-KB SRAM, but in 32-pin HWQFN (5 mm × 5 mm, 0.5 mm pitch) - smaller footprint, no 5-V tolerant pins. | Lacks P913/P914 5-V tolerance; requires level-shifting for legacy 5-V sensors or RS-485 drivers. | Select when board space is constrained and all peripherals operate at ≤3.3 V; verify thermal dissipation with exposed pad grounding. |
| R7FA2E1A52DFJ#BA0 | Identical LQFP-32 package and pinout, but with 32-KB code flash and same 12-KB SRAM - reduced program memory, identical peripherals and safety features. | Supports simpler firmware images (e.g., single-protocol BLE only); insufficient for dual-stack (BLE + Zigbee) or OTA update partitioning. | Select for cost-sensitive designs where firmware size remains under 28 KB; retains full compatibility for layout and driver reuse. |
Compared with R7FA2E1A72DNH#AA0, the R7FA2E1A72DFJ#BA0 offers 5-V tolerant I/O for direct industrial interfacing; compared with R7FA2E1A52DFJ#BA0, it provides 32 KB additional flash for complex protocol stacks and future firmware expansion without hardware change.
Availability
R7FA2E1A72DFJ#BA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and medical wearable monitors requiring stable component supply, long-term lifecycle support, and automotive-grade reliability validation.
Supply support for R7FA2E1A72DFJ#BA0 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, including the R7FA2E1A72DFJ#BA0, was designed for cost-sensitive, ultra-low-power applications demanding functional safety - targeting industrial automation, building controls, and portable medical devices with ASIL-B or SIL2 certification paths.
FAQ
What is the maximum operating frequency and core architecture of the R7FA2E1A72DFJ#BA0?
The R7FA2E1A72DFJ#BA0 uses an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 32 MHz. It includes hardware integer multiply/divide, SysTick timer, and CoreSight™ MTB-M23 trace capability. This core enables deterministic real-time performance while maintaining ultra-low power consumption in the RA0E1 series.
Does the R7FA2E1A72DFJ#BA0 support functional safety standards like IEC 61508 or ISO 26262?
Yes, the R7FA2E1A72DFJ#BA0 includes multiple hardware safety mechanisms - SRAM parity checking, flash area protection, ADC self-diagnosis, independent watchdog timer (IWDT), illegal memory access detection, and register write protection - enabling system-level compliance with IEC 61508 SIL2 and ISO 26262 ASIL-B. Renesas provides safety manuals and FMEDA reports for the RA0E1 group.
What are the supported clock sources and their accuracy specifications for the R7FA2E1A72DFJ#BA0?
The R7FA2E1A72DFJ#BA0 supports five clock sources: main crystal oscillator (1–20 MHz), sub-clock (32.768 kHz), and three on-chip oscillators - HOCO (24/32 MHz, ±1.0% accuracy when trimmed), MOCO (4 MHz, ±12%), and LOCO (32.768 kHz, ±15%). HOCO/MOCO/LOCO include clock trim functions for improved stability across voltage and temperature.
How many analog input channels does the 12-bit ADC (ADC12) support on the R7FA2E1A72DFJ#BA0, and what reference options are available?
The R7FA2E1A72DFJ#BA0's ADC12 supports 10 analog input channels (AN000–AN007, AN021–AN022). Reference options include external VREFH0/VREFL0 pins or internal VCC/VSS - allowing flexible scaling for sensors with varying output ranges. The on-die temperature sensor feeds directly into the ADC for die-temperature compensation.
What debug interface does the R7FA2E1A72DFJ#BA0 use, and are there any special PCB layout considerations?
The R7FA2E1A72DFJ#BA0 uses a two-pin Serial Wire Debug (SW-DP) interface via SWDIO and SWCLK pins - eliminating the need for full JTAG. For reliable debugging, route these signals with controlled impedance (50 Ω), avoid stubs, and place a 100 Ω series resistor near the MCU. The 32-pin LQFP package requires proper decoupling: 0.1 µF near VCC and 0.47–1 µF on VCL to VSS.
R7FA2E1A72DFJ#BA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-LQFP
- Series:
- RA2E1
- Packaging:
- Tray
- 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:
- 23
- 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 10x12b SAR
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E1A72DFJ#BA0 FAQ
1.How can I place an order for R7FA2E1A72DFJ#BA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E1A72DFJ#BA0 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 R7FA2E1A72DFJ#BA0 reliable?
The price and inventory of R7FA2E1A72DFJ#BA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E1A72DFJ#BA0 is usually 5 days.
3.What payment methods are accepted for R7FA2E1A72DFJ#BA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E1A72DFJ#BA0 transactions.
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R7FA2E1A72DFJ#BA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E1A72DFJ#BA0 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 R7FA2E1A72DFJ#BA0?
For technical support, including R7FA2E1A72DFJ#BA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E1A72DFJ#BA0 requirements.
6.How does Aetrix verify that R7FA2E1A72DFJ#BA0 is sourced from the original manufacturer or authorized distributors?
All R7FA2E1A72DFJ#BA0 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 R7FA2E1A72DFJ#BA0 meets industry standards.
7.What is the process for return or replacement of R7FA2E1A72DFJ#BA0?
All R7FA2E1A72DFJ#BA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E1A72DFJ#BA0, 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 R7FA2E1A72DFJ#BA0 part is unused and in its original packaging.
Return procedure for R7FA2E1A72DFJ#BA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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