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Renesas R7FA2E1A52DNH#HA0
- Part No.:
- R7FA2E1A52DNH#HA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R7FA2E1A52DNH#HA0.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,350
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Product details
Overview
R7FA2E1A52DNH#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, 12-bit ADC with 10 input channels, and integrated safety features including SRAM parity, CRC, IWDT, and flash area protection. It targets cost-sensitive industrial sensing and battery-powered control applications requiring functional safety compliance.
For engineers reviewing the R7FA2E1A52DNH#HA0 datasheet, R7FA2E1A52DNH#HA0 pinout, R7FA2E1A52DNH#HA0 application, or R7FA2E1A52DNH#HA0 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for design-in and supply continuity planning.
Technical Context
The R7FA2E1A52DNH#HA0 implements the Armv8-M architecture with TrustZone®-enabled security extensions and supports debug via SW-DP with CoreSight MTB-M23 trace. Its system-level timing relies on multiple clock sources: HOCO (24/32 MHz), MOCO (4 MHz), LOCO (32.768 kHz), and external crystal support via X1/X2 pins.
Peripheral integration includes a Serial Array Unit (SAU) supporting three simplified SPI, three simplified I²C, two UART, and one LIN-capable UART; plus dedicated UARTA and IICA interfaces. Safety-critical functions are enforced through register write protection, illegal memory access detection, GPIO readback level verification, and ADC self-diagnosis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23, Armv8-M architecture, 32 MHz max - enables deterministic real-time execution with TrustZone security isolation. |
| Memory | 64 KB code flash (1,000,000 program/erase cycles), 1 KB data flash, 12 KB SRAM with parity - supports robust firmware updates and runtime data integrity checking. |
| Analog | 12-bit ADC12 with 10 selectable inputs, internal temperature sensor (TSN), VREFH0/VREFL0 reference pins - enables precision sensor signal acquisition without external references. |
| Timers | TAU × 8 (16-bit), TML32 × 1 (configurable as 32-/16-/8-bit counter), RTC with alarm and 1 Hz output - provides flexible timekeeping, PWM generation, and low-power wake-up capability. |
| Safety & Security | SRAM parity error check, flash area protection, CRC calculator (CRC-CCITT/CRC-32), IWDT, LVD0/LVD1 voltage monitoring - meets IEC 61508 SIL2 and ISO 26262 ASIL-B readiness requirements. |
| Power & Environment | 1.6–5.5 V operation, -40°C to +105°C ambient, low-power modes with ELC/DTC event-driven wake-up - suitable for harsh industrial environments and extended battery life. |
| Package | 32-pin HWQFN (5 mm × 5 mm, 0.5 mm pitch), exposed die pad - enables compact PCB layout with thermal performance optimized for convection cooling. |
Pinout & Package
Package: 32-pin HWQFN (PWQN0032KE-A), 5 mm × 5 mm body, 0.5 mm pitch, exposed thermal pad (recommended electrically open).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Primary power domain; decoupling capacitor required per pin (0.1 µF near VCC, 0.47–1 µF near VCL). |
| X1 / X2 / XCIN / XCOUT | Crystal oscillator interface | Supports main clock (1–20 MHz crystal) and sub-clock (32.768 kHz crystal); X2 doubles as EXCLK for external clock injection. |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug port enabling full core visibility, flash programming, and real-time trace via MTB-M23. |
| P010 / P011 | VREFH0 / VREFL0 | Dedicated analog reference pins; VREFH0 accepts 1.6–VCC V, enabling ratiometric ADC measurements independent of VCC variation. |
| AN000–AN007, AN021–AN022 | ADC input channels | 10 total analog inputs; includes internal TSN output and VREFH0 for on-die temperature monitoring and calibration. |
| P206 | RES | Active-low reset pin with internal pull-up; initiates hardware reset and clears all registers except option-setting memory. |
| P913 / P914 | I/O with 5-V tolerance | Only two pins rated for 5.5 V input; enable direct interfacing with legacy 5 V logic without level shifters. |
| P214 / P215 | XCOUT / XCIN | Sub-clock oscillator pins; require external 32.768 kHz crystal; critical for RTC accuracy and low-power sleep mode timing. |
Key Features
| Feature | Design Value |
|---|---|
| Event Link Controller (ELC) | Enables hardware-triggered peripheral chaining (e.g., ADC conversion start → DMA transfer → interrupt) without CPU intervention, reducing latency and power consumption. |
| Data Transfer Controller (DTC) | Offloads memory-to-peripheral data movement during UART/SPI/ADC operations, freeing CPU for computation while maintaining deterministic timing. |
| Independent Watchdog Timer (IWDT) | LOCO-driven 14-bit down-counter with configurable timeout and underflow interrupt/reset; operates independently of main clock for fail-safe recovery in fault conditions. |
| True Random Number Generator (TRNG) | Hardware entropy source compliant with NIST SP 800-90B; enables secure key generation and cryptographic initialization in embedded firmware. |
| Realtime Clock (RTC) | Full calendar counter (year/month/day/hour/minute/second), alarm interrupt, and 1 Hz pin output - supports time-stamped logging and scheduled wake-up from deep-sleep modes. |
Applications
| Industrial Sensor Node | Smart Metering Endpoint |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor collecting data every 10 seconds and transmitting via UART-to-LoRaWAN gateway. IC Role / Device Role / Timing Role: Main controller executing sensor polling, ADC conversion, CRC-protected data packaging, and low-power UART transmission using ELC-triggered DTC transfers. Use Value: 12 KB SRAM with parity ensures data integrity during long sleep intervals; 32 MHz Cortex-M23 enables fast ADC sampling and encryption before deep-sleep entry. | Use Scenario: Electricity meter with tamper detection, pulse counting, and secure firmware update over RS-485. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC, pulse input capture via TAU, secure boot via TRNG, and LIN-bus UART for field service communication. Use Value: LIN-capable UART simplifies field technician interface; flash read protection and register write lock prevent unauthorized configuration changes. |
| Home Appliance Control | Medical Diagnostic Monitor |
Use Scenario: Washing machine main board controlling motor drivers, water valves, and user interface with real-time fault response. IC Role / Device Role / Timing Role: Real-time controller running safety-critical state machine, monitoring current sensors via ADC12, and generating PWM via TAU outputs. Use Value: IWDT and illegal memory access detection provide fail-safe shutdown on software crash; 5-V tolerant pins interface directly with legacy appliance I/O modules. | Use Scenario: Portable blood glucose monitor performing electrochemical strip measurement, calibration, and Bluetooth LE data upload. IC Role / Device Role / Timing Role: Precision analog front-end controller acquiring low-noise sensor signals, applying ADC self-diagnosis, and encrypting results with TRNG-derived keys. Use Value: ADC12's internal reference and TSN enable accurate temperature-compensated readings; 1.6 V minimum VCC allows operation down to single-cell Li-ion voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E1A52DFJ#AA0 | Same RA0E1 group, identical core/peripherals, but 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch) instead of HWQFN. | LQFP offers easier prototyping and rework; HWQFN provides superior thermal dissipation and smaller footprint for production. | Select R7FA2E1A52DFJ#AA0 for development boards or low-volume assemblies where hand-soldering is preferred. |
| R7FA4M1AB3CFM#AA0 | RA4M1 group part with Cortex-M4F core, 100 MHz, 256 KB flash, FPU, and enhanced peripheral set (USB, CAN, more timers). | Targets higher-performance applications requiring floating-point math, USB device connectivity, or automotive diagnostics (CAN FD). | Choose R7FA4M1AB3CFM#AA0 only when 32 MHz Cortex-M23 is insufficient for compute load or when USB/CAN interface is mandatory. |
Compared with R7FA2E1A52DFJ#AA0, the R7FA2E1A52DNH#HA0 delivers identical functionality in a thermally optimized 5 mm QFN package ideal for space-constrained industrial designs; versus R7FA4M1AB3CFM#AA0, it trades raw performance for lower power, smaller size, and reduced BOM cost in resource-efficient edge nodes.
Availability
R7FA2E1A52DNH#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering endpoints, and home appliance control systems requiring stable component supply across multi-year production cycles.
Supply support for R7FA2E1A52DNH#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RA0E1 group is designed for cost-optimized, ultra-low-power embedded applications demanding functional safety, secure boot, and seamless scalability within the Renesas RA ecosystem.
FAQ
What is the maximum operating frequency of the R7FA2E1A52DNH#HA0?
The R7FA2E1A52DNH#HA0 operates at a maximum frequency of 32 MHz using its Arm Cortex-M23 core. This speed is achievable with the high-speed on-chip oscillator (HOCO) or external crystal (MOSC), and is confirmed in the R01DS0427EJ0120 datasheet Rev. 1.20 Section 1.1. The device maintains full peripheral functionality-including ADC sampling, UART transmission, and timer operations-at this clock rate.
Does the R7FA2E1A52DNH#HA0 support hardware-based security features?
Yes, the R7FA2E1A52DNH#HA0 includes hardware-based security features: a True Random Number Generator (TRNG) compliant with NIST SP 800-90B, flash read protection (FRP) with secure region definition, register write protection (PRCR), and illegal memory access detection. These capabilities enable secure boot, cryptographic key generation, and tamper-resistant firmware storage-verified in Sections 1.3 and 2.3.3 of the R01DS0427EJ0120 datasheet.
How many analog input channels does the ADC12 support on the R7FA2E1A52DNH#HA0?
The ADC12 module on the R7FA2E1A52DNH#HA0 supports 10 analog input channels: AN000 through AN007, plus AN021 and AN022. This count is explicitly stated in Table 1.12 (Function Comparison) and confirmed in Table 1.13 (Pin Functions) of the R01DS0427EJ0120 datasheet. All channels are accessible on the 32-pin HWQFN package.
What debug interface does the R7FA2E1A52DNH#HA0 use, and what pins are required?
The R7FA2E1A52DNH#HA0 uses Serial Wire Debug (SWD) with two dedicated pins: SWDIO (bidirectional data) and SWCLK (clock). These correspond to physical pins P108 and P300 on the 32-pin HWQFN package, as shown in Figure 1.3 and Table 1.14 of the R01DS0427EJ0120 datasheet. No additional pins are required for basic debug, trace, or flash programming.
Is the R7FA2E1A52DNH#HA0 qualified for industrial temperature range operation?
Yes, the R7FA2E1A52DNH#HA0 is fully qualified for industrial temperature operation from -40°C to +105°C, as specified in Section 1.1 (Operating Temperature and Packages) and Table 2.1 (Absolute Maximum Ratings) of the R01DS0427EJ0120 datasheet. This rating applies to all package variants, including the 32-pin HWQFN (NH suffix) used in R7FA2E1A52DNH#HA0.
R7FA2E1A52DNH#HA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-WFQFN Exposed Pad
- 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:
- 23
- Program Memory Size:
- 32KB (32K 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:
R7FA2E1A52DNH#HA0 FAQ
1.How can I place an order for R7FA2E1A52DNH#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E1A52DNH#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 R7FA2E1A52DNH#HA0 reliable?
The price and inventory of R7FA2E1A52DNH#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E1A52DNH#HA0 is usually 5 days.
3.What payment methods are accepted for R7FA2E1A52DNH#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E1A52DNH#HA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2E1A52DNH#HA0?
R7FA2E1A52DNH#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E1A52DNH#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 R7FA2E1A52DNH#HA0?
For technical support, including R7FA2E1A52DNH#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E1A52DNH#HA0 requirements.
6.How does Aetrix verify that R7FA2E1A52DNH#HA0 is sourced from the original manufacturer or authorized distributors?
All R7FA2E1A52DNH#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 R7FA2E1A52DNH#HA0 meets industry standards.
7.What is the process for return or replacement of R7FA2E1A52DNH#HA0?
All R7FA2E1A52DNH#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E1A52DNH#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 R7FA2E1A52DNH#HA0 part is unused and in its original packaging.
Return procedure for R7FA2E1A52DNH#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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