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Renesas R7FA2E1A92DFK#HA0
- Part No.:
- R7FA2E1A92DFK#HA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R7FA2E1A92DFK#HA0.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
R7FA2E1A92DFK#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 check, CRC, and independent watchdog timer. It targets battery-powered industrial sensors and smart metering endpoints requiring functional safety compliance.
For engineers reviewing the R7FA2E1A92DFK#HA0 datasheet, R7FA2E1A92DFK#HA0 pinout, R7FA2E1A92DFK#HA0 application, or R7FA2E1A92DFK#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 R7FA2E1A92DFK#HA0 implements Armv8-M architecture with single-cycle integer multiply and 19-cycle divide, supporting TrustZone®-enabled secure boot and runtime isolation. Its clock system integrates HOCO (24/32 MHz), MOCO (4 MHz), LOCO (32.768 kHz), and SOSC (32.768 kHz) with trimmable accuracy-enabling precise low-power timing across wide voltage (1.6–5.5 V) and temperature (−40°C to +105°C) ranges.
Peripheral integration includes Serial Array Unit (SAU) with three simplified SPI, three simplified I²C, two UART, and one LIN-capable UART; plus UARTA, IICA, TAU (eight 16-bit timers), TML32 (configurable 8/16/32-bit interval timer), RTC, ELC, DTC, TRNG, and LVD with dual thresholds-optimized for deterministic real-time control in resource-constrained edge nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23, 32 MHz max - enables deterministic real-time execution with TrustZone security partitioning |
| Memory | 64-KB code flash + 1-KB data flash + 12-KB SRAM with parity - supports firmware updates, parameter storage, and error-detecting RAM for safety-critical tasks |
| Analog | 12-bit ADC12 with 10 channels + on-die temperature sensor - provides precision sensor interface without external components |
| Timers | TAU × 8 (16-bit) + TML32 (8/16/32-bit configurable) + RTC - delivers flexible timing for PWM generation, interval counting, and calendar-based wake-up |
| Safety | SRAM parity, CRC-32/CCITT, IWDT, illegal access detection, register write protection - meets IEC 61508 SIL2 and ISO 26262 ASIL-B readiness requirements |
| Power | 1.6–5.5 V operation, −40°C to +105°C ambient - supports direct battery connection and extended industrial temperature deployment |
| Package | 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch) - standard surface-mount footprint compatible with automated assembly and thermal management |
Pinout & Package
32-pin LQFP package (PLQP0032GB-A) with exposed die pad recommended electrically open; designed for industrial-grade thermal and mechanical reliability under reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Primary power domain; requires local 0.1-µF decoupling per VCC pin and solid ground plane for noise immunity |
| X1 / X2 / XCIN / XCOUT | Crystal oscillator interface | Supports external 1–20 MHz main clock and 32.768 kHz sub-clock crystal; critical for RTC accuracy and low-power sleep modes |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug port enabling full JTAG/SWD programming, trace, and real-time register inspection without dedicated debug header |
| P010 / P011 | VREFH0 / VREFL0 | Dedicated analog reference pins - must be connected to stable VCC/VSS or external precision references for ADC linearity |
| AN000–AN007, AN021–AN022 | ADC input channels | 10 total analog inputs; includes internal temperature sensor output and internal reference voltage selectable for self-calibration |
| P206 | RES | Active-low reset pin - accepts external reset sources and supports brown-out recovery with programmable LVD thresholds |
| P913 / P914 | I/O with 5-V tolerance | Only two pins rated for 5-V logic levels - enable direct interfacing with legacy 5-V peripherals without level shifters |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation | Multiple sleep modes with sub-µA retention current and fast wake-up (< 5 µs) - extends battery life in wireless sensor nodes |
| Event Link Controller (ELC) | Hardware-triggered peripheral chaining without CPU intervention - reduces latency and CPU load in time-critical signal processing |
| Data Transfer Controller (DTC) | Autonomous memory-to-peripheral transfers on interrupt - offloads CPU during ADC sampling or UART streaming |
| True Random Number Generator (TRNG) | FIPS-compliant entropy source - enables secure key generation for TLS handshake and firmware authentication |
| Flash read protection (FRP) | Configurable secure region blocking non-secure code access - prevents firmware reverse engineering in deployed devices |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
Use Scenario: Battery-powered temperature/humidity/pressure sensor transmitting data via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: Main controller executing sensor acquisition, CRC-checked data packaging, and low-power radio scheduling using RTC alarm and ELC-triggered ADC/DTC transfers. Use Value: 32 MHz Cortex-M23 core processes sensor fusion algorithms while 12-KB SRAM retains calibration tables; 64-KB flash stores OTA update image and secure bootloader. | 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, tariff switching via RTC calendar, LIN-bus communication to display module, and independent watchdog supervision. Use Value: Integrated LIN-capable UART eliminates external transceiver; SRAM parity and IWDT meet IEC 62056-21 functional safety requirements for revenue-grade meters. |
| Medical Wearable Monitor | Building Automation Controller |
Use Scenario: Clinical-grade pulse oximeter with optical sensor interface, Bluetooth LE connectivity, and battery health monitoring. IC Role / Device Role / Timing Role: Real-time signal acquisition via ADC12 with temperature-compensated gain control, TRNG-based BLE pairing key generation, and LVD-triggered low-battery alerts. Use Value: On-die temperature sensor feeds ADC12 for automatic LED current compensation; 1.6 V minimum VCC enables operation down to single-cell Li-ion voltage sag. | Use Scenario: HVAC zone controller reading thermistors, driving relays, communicating over BACnet MS/TP, and logging occupancy events. IC Role / Device Role / Timing Role: Central timing and I/O manager using TAU for relay PWM dimming, SAU for RS-485 physical layer, and RTC for scheduled ventilation cycles. Use Value: Five 5-V tolerant GPIOs (P913/P914 + three others) interface directly with legacy 24 V AC sensors; 105°C rating ensures reliability inside electrical enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E1A93DFK#HA0 | Same RA0E1 family, identical 64-KB flash, 12-KB SRAM, and peripherals; differs only in factory-programmed unique ID and minor mask revision. | No functional difference; fully interchangeable in all hardware and software contexts. | Select when sourcing flexibility or alternate lot traceability is required without design change. |
| R7FA4M1AB3CFM#AA0 | RA4M1 family part with Arm Cortex-M4F core, 256-KB flash, 32-KB SRAM, higher performance (48 MHz), but no LIN support and larger 48-pin LQFP package. | Requires PCB redesign and firmware adaptation; suited for applications needing floating-point math or larger code space. | Choose only if computational headroom or future scalability outweighs cost and layout impact of migration. |
Compared with R7FA2E1A92DFK#HA0, R7FA2E1A93DFK#HA0 offers identical functionality with guaranteed compatibility, while R7FA4M1AB3CFM#AA0 trades ultra-low-power efficiency and compact size for higher compute throughput and memory-making it suitable only for next-generation upgrades where power budget and board area allow.
Availability
R7FA2E1A92DFK#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, medical wearables, and building automation controllers requiring stable component supply across extended temperature and long product lifecycles.
Supply support for R7FA2E1A92DFK#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 specifically for cost-sensitive, ultra-low-power embedded applications demanding functional safety features and seamless scalability within the Renesas RA ecosystem.
FAQ
What is the maximum operating frequency of the R7FA2E1A92DFK#HA0?
The R7FA2E1A92DFK#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, and is maintained across the full operating voltage range (1.6–5.5 V) and temperature range (−40°C to +105°C). The R7FA2E1A92DFK#HA0 includes clock trimming functions to stabilize frequency accuracy under varying conditions.
Does the R7FA2E1A92DFK#HA0 support LIN bus communication?
Yes, the R7FA2E1A92DFK#HA0 supports LIN bus communication through one dedicated UART channel (UART2) within its Serial Array Unit (SAU). This channel is explicitly specified in the datasheet as "UART (LIN-bus supported) × 1" and is hardware-configurable for LIN 2.2A compliance. The R7FA2E1A92DFK#HA0 does not require external transceivers for basic LIN node implementation, reducing BOM cost and board space.
How many analog input channels does the R7FA2E1A92DFK#HA0 ADC support?
The R7FA2E1A92DFK#HA0 integrates a 12-bit successive approximation ADC (ADC12) supporting up to 10 analog input channels: AN000 through AN007, plus AN021 and AN022. These include dedicated pins for external signals and internal sources such as the on-die temperature sensor and internal reference voltage-enabling self-test and calibration without external components. The R7FA2E1A92DFK#HA0's ADC also supports scan mode and hardware trigger synchronization via TAU or ELC.
What safety features are implemented in the R7FA2E1A92DFK#HA0?
The R7FA2E1A92DFK#HA0 includes SRAM parity error checking, flash area protection, ADC self-diagnosis, Cyclic Redundancy Check (CRC-32/CCITT), Independent Watchdog Timer (IWDT), GPIO readback level detection, register write protection, and illegal memory access detection. These features collectively support functional safety development aligned with IEC 61508 SIL2 and ISO 26262 ASIL-B requirements. The R7FA2E1A92DFK#HA0's safety mechanisms operate independently of software execution, providing hardware-enforced fault containment.
Which package type is used for the R7FA2E1A92DFK#HA0?
The R7FA2E1A92DFK#HA0 uses a 32-pin LQFP package (PLQP0032GB-A), measuring 7 mm × 7 mm with 0.8 mm pitch. This package includes an exposed die pad recommended to be left electrically open per Renesas guidelines. It is rated for industrial temperature operation (−40°C to +105°C) and supports standard reflow soldering profiles. The R7FA2E1A92DFK#HA0's pinout matches other 32-pin RA0E1 variants, enabling hardware reuse across memory and feature variants.
R7FA2E1A92DFK#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:
- 128KB (128K 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E1A92DFK#HA0 FAQ
1.How can I place an order for R7FA2E1A92DFK#HA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E1A92DFK#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 R7FA2E1A92DFK#HA0 reliable?
The price and inventory of R7FA2E1A92DFK#HA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E1A92DFK#HA0 is usually 5 days.
3.What payment methods are accepted for R7FA2E1A92DFK#HA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E1A92DFK#HA0 transactions.
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R7FA2E1A92DFK#HA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E1A92DFK#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 R7FA2E1A92DFK#HA0?
For technical support, including R7FA2E1A92DFK#HA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E1A92DFK#HA0 requirements.
6.How does Aetrix verify that R7FA2E1A92DFK#HA0 is sourced from the original manufacturer or authorized distributors?
All R7FA2E1A92DFK#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 R7FA2E1A92DFK#HA0 meets industry standards.
7.What is the process for return or replacement of R7FA2E1A92DFK#HA0?
All R7FA2E1A92DFK#HA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E1A92DFK#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 R7FA2E1A92DFK#HA0 part is unused and in its original packaging.
Return procedure for R7FA2E1A92DFK#HA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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