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Renesas R7FA2A2AD3CFP#HA1
- Part No.:
- R7FA2A2AD3CFP#HA1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
R7FA2A2AD3CFP#HA1.pdf
- Description:
- MCU RA2A2 ARM CM23 48MHZ 512K/48
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Inventory:4,287
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Product details
Overview
R7FA2A2AD3CFP#HA1 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 512-KB dual-bank flash, 48-KB SRAM with ECC/parity split, 24-bit Sigma-Delta ADC (7-channel differential), 12-bit SAR ADC (4-channel), and integrated segment LCD controller driving up to 45 segments × 4 commons - designed for battery-powered industrial HMI, portable medical sensors, and smart utility meters requiring high-precision analog acquisition and long-term RTC operation.
For engineers reviewing the R7FA2A2AD3CFP#HA1 datasheet, R7FA2A2AD3CFP#HA1 pinout, R7FA2A2AD3CFP#HA1 application, or R7FA2A2AD3CFP#HA1 equivalent, this page delivers verified technical context on its SDADC24 calibration flow, independent VRTC power domain behavior, AGT/AGTW timer synchronization in low-power modes, and security-critical AES-256/GCM implementation constraints per R01DS0418EJ0130 Rev.1.30.
Technical Context
The R7FA2A2AD3CFP#HA1 implements Armv8-M architecture with Memory Protection Unit (8 regions), debug via SW-DP, and dual-clock-domain safety features including CAC for oscillator accuracy validation and IWDT with dedicated 15-kHz LOCO. Its analog subsystem integrates two independent A/D converters: ADC12 supports internal reference and temperature sensor input, while SDADC24 uses programmable gain amplifier, digital filtering, and PLL-multiplied clocking from SOSC for high-resolution metrology-grade measurements.
System-level intelligence is enabled by Event Link Controller (ELC) for CPU-free peripheral triggering, Data Transfer Controller (DTC) for autonomous memory moves, and Memory Mirror Function (MMF) allowing application code to execute from mirrored flash addresses without relocation awareness - critical for secure firmware updates and fail-safe boot recovery in industrial control applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M23 @ 48 MHz max; supports TrustZone for secure firmware partitioning and MPU-enforced memory isolation |
| Memory | 512-KB dual-bank flash (256 KB × 2) with Bank Swap; 8-KB data flash (100k P/E cycles); 48-KB SRAM (32 KB parity + 16 KB ECC) |
| Analog | 24-bit SDADC24 with 7-diff/14-se input channels, 7.813 kHz sampling, PGA, and digital filter chain; 12-bit ADC12 with 4 inputs + TSN |
| Timers | GPT16 × 6 (BLDC motor PWM), AGT × 8 (16-bit async), AGTW × 2 (32-bit async), WDT/IWDT with independent clocks |
| HMI | Segment LCD controller (SLCDC) supporting 45 seg × 4 com or 41 seg × 8 com; internal boost/cap-split/resistor-divider drive methods |
| Security | AES-128/256 (ECB/CBC/CTR/GCM/CMAC/CCM), TRNG, CRC engine with snoop mode, DOC for 16-bit data integrity checks |
| Power | VCC = 1.6–5.5 V; independent VRTC supply; LVD on VCC/VRTC/EXLVDVBAT/EXLVD; low-power modes with ELC-triggered wake-up |
Pinout & Package
Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, Pb-free terminal finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power / Ground | Dual VCC pins (pins 26, 50) and multiple VSS (pins 25, 49, 75) enable low-noise analog/digital separation and decoupling stability |
| XCIN / XCOUT | Sub-clock oscillator | 32.768 kHz crystal interface for independent RTC and SDADC24 clock source; supports stop-detection circuitry |
| ANIP0–ANIP6 / ANIN0–ANIN6 | SDADC24 analog inputs | Differential pair inputs (positive/negative) for 7-channel sigma-delta conversion; require AVCM common-mode bias |
| SEG0–SEG44 / COM0–COM7 | LCD segment/common drivers | Direct-drive outputs supporting 45-segment × 4-common or 41-segment × 8-common configurations; VL1–VL4 configurable voltage references |
| SWDIO / SWCLK | Debug interface | 2-pin Serial Wire Debug port compliant with CoreSight MTB-M23; enables non-intrusive trace and secure firmware debugging |
Key Features
| Feature | Design Value |
|---|---|
| Memory Mirror Function (MMF) | Maps flash load address to 23-bit mirror space, enabling seamless firmware update without linker script changes or runtime relocation |
| Independent Power Supply RTC | Operates from VRTC pin during main power loss; retains calendar (2000–2099), alarm, and clock correction functions for >10-year backup |
| SDADC24 Clock Flexibility | Accepts PLL-multiplied clock from 32.768 kHz SOSC (12.0/12.8 MHz) or HOCO (24/32/48/64 MHz), enabling precision timing control for metrology |
| Port Output Enable for GPT (POEG) | Hardware-gated PWM output disable for safe motor control shutdown without CPU intervention or GPIO reconfiguration |
| Event Link Controller (ELC) | Routes 128+ peripheral events directly between modules (e.g., AGT overflow → DTC trigger → SDADC24 start), eliminating CPU polling overhead |
Applications
| Industrial Flow Meter | Portable Blood Glucose Monitor |
|---|---|
Use Scenario: High-accuracy liquid/gas flow measurement using ultrasonic time-of-flight or magnetic induction sensing. IC Role / Device Role / Timing Role: R7FA2A2AD3CFP#HA1 serves as primary signal processor: SDADC24 digitizes low-level transducer signals with 24-bit resolution and programmable gain; AGTW timers capture precise zero-crossing timestamps. Use Value: Dual-clock SDADC24 (PLL-derived from SOSC) ensures stable sampling independent of system clock jitter, enabling ±0.1% flow rate accuracy over temperature. |
Use Scenario: Battery-powered handheld device measuring glucose concentration from electrochemical test strips. IC Role / Device Role / Timing Role: R7FA2A2AD3CFP#HA1 performs analog front-end conditioning (SDADC24), strip insertion detection (RTCICn), and secure result storage (AES-256 encrypted flash). Use Value: Integrated TSN + ADC12 provides on-chip temperature compensation; independent VRTC maintains real-time test timestamping even during battery replacement. |
| Smart Electricity Meter | Building HVAC Thermostat Display |
Use Scenario: Revenue-grade energy metering with harmonic analysis, tamper detection, and remote firmware updates. IC Role / Device Role / Timing Role: R7FA2A2AD3CFP#HA1 executes metrology algorithms (MACL-based FFT), validates flash integrity (CRC snoop), and manages secure OTA updates (AES-GCM decryption + Bank Swap). Use Value: Dual-bank flash enables atomic firmware swap with zero downtime; ECC-protected SRAM prevents corruption during brown-out events. |
Use Scenario: Wall-mounted thermostat with segmented LCD display, ambient temperature/humidity sensing, and BLE connectivity. IC Role / Device Role / Timing Role: R7FA2A2AD3CFP#HA1 drives 45-segment LCD (SLCDC), reads TSN and I2C humidity sensor, and schedules low-power wake-ups via AGT timers. Use Value: Internal voltage boosting eliminates external LCD charge pump; 1.6–5.5 V operation allows direct Li-ion or alkaline battery use without regulator. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power Arm Cortex-M23 microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2A2BD3CFP | Same package and core, but SDADC24 limited to 4 channels; no SEG44/SEG45 pins; reduced segment LCD support (max 39 seg × 4 com) | Suitable for cost-sensitive metering where 4-channel SDADC suffices; not viable for full 7-channel sensor fusion or 45-segment displays | Select R7FA2A2BD3CFP only if SDADC channel count and LCD segment requirements are strictly lower - no pin compatibility with R7FA2A2AD3CFP#HA1's extended analog/LCD pin set |
| RA2E2A2AD3CFP | Successor RA2E2 series: same 48 MHz M23 core, 512-KB flash, but replaces SDADC24 with 24-bit delta-sigma ADC having different register map, clocking, and PGA configuration | RA2E2 targets next-gen designs needing higher integration density; lacks independent VRTC and SLCDC waveform-A/B selection | R7FA2A2AD3CFP#HA1 remains preferred for legacy design continuity, VRTC-critical applications, and existing SLCDC firmware - RA2E2 requires full hardware/software requalification |
Compared with R7FA2A2BD3CFP and RA2E2A2AD3CFP, the R7FA2A2AD3CFP#HA1 uniquely combines 7-channel SDADC24, 45-segment LCD drive, and independent VRTC in a single 100-pin LQFP package - making it irreplaceable for applications demanding simultaneous high-resolution analog acquisition, large-segment HMI, and decade-long RTC reliability without external components.
Availability
R7FA2A2AD3CFP#HA1 is available at Aetrix Electronics and suitable for industrial flow meters, portable medical diagnostics, smart electricity meters, building HVAC thermostats, and battery-backed utility monitoring systems requiring stable component supply across extended product lifecycles.
Supply support for R7FA2A2AD3CFP#HA1 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 RA2A2 Group - including R7FA2A2AD3CFP#HA1 - was engineered for ultra-low-power, high-integrity applications requiring metrology-grade analog performance, secure firmware execution, and human-machine interface integration in harsh environments.
FAQ
What is the maximum sampling rate of the 24-bit SDADC24 in R7FA2A2AD3CFP#HA1?
The R7FA2A2AD3CFP#HA1 SDADC24 supports two selectable sampling rates: 7.813 kHz and 3.906 kHz when using the 12-MHz PLL clock derived from the 32.768-kHz sub-clock oscillator, or 8.333 kHz and 4.166 kHz when using the 12.8-MHz PLL clock. These rates are fixed per clock configuration and cannot be dynamically adjusted beyond these four values.
Does R7FA2A2AD3CFP#HA1 support true pin-to-pin compatibility with other RA2A2 variants?
No - R7FA2A2AD3CFP#HA1 is not pin-to-pin compatible with R7FA2A2BD3CFP or RA2E2A2AD3CFP. While all share the 100-pin LQFP footprint, R7FA2A2AD3CFP#HA1 allocates SEG44 and SEG45 to pins P010 and P011, which are repurposed as general I/O in the B-version, and RA2E2 reassigns multiple analog and LCD pins. PCB layout must be specific to R7FA2A2AD3CFP#HA1.
How does the independent power supply RTC in R7FA2A2AD3CFP#HA1 maintain accuracy during main power loss?
The R7FA2A2AD3CFP#HA1 RTC operates from the VRTC pin, which can be connected to a coin-cell or supercapacitor. It uses the 32.768-kHz sub-clock oscillator (SOSC) for timekeeping and includes clock correction logic that compensates for crystal drift over temperature. The RTCPOR circuit ensures reliable reset upon VRTC power restoration, preserving calendar state across power cycles.
Can the Memory Mirror Function (MMF) in R7FA2A2AD3CFP#HA1 be used for secure firmware updates?
Yes - the MMF in R7FA2A2AD3CFP#HA1 enables secure firmware updates by allowing new firmware images to be written to one flash bank while the active image runs from the mirrored address space. Combined with Bank Swap and flash area protection registers, this supports atomic, rollback-safe updates without exposing unvalidated code to execution.
What LCD drive methods does the SLCDC in R7FA2A2AD3CFP#HA1 support, and how are they selected?
The R7FA2A2AD3CFP#HA1 SLCDC supports three LCD drive methods: internal voltage boosting (VL1/VL2 reference), capacitor split (VCC/VL4 reference), and external resistance division. Selection is controlled by SLCDC register bits (SLCDCR0.BIT.LCDMD[1:0]), allowing dynamic switching at runtime to optimize contrast, power, and external component count based on display type and battery voltage.
R7FA2A2AD3CFP#HA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
R7FA2A2AD3CFP#HA1 FAQ
1.How can I place an order for R7FA2A2AD3CFP#HA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2A2AD3CFP#HA1 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 R7FA2A2AD3CFP#HA1 reliable?
The price and inventory of R7FA2A2AD3CFP#HA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2A2AD3CFP#HA1 is usually 5 days.
3.What payment methods are accepted for R7FA2A2AD3CFP#HA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2A2AD3CFP#HA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2A2AD3CFP#HA1?
R7FA2A2AD3CFP#HA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2A2AD3CFP#HA1 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 R7FA2A2AD3CFP#HA1?
For technical support, including R7FA2A2AD3CFP#HA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2A2AD3CFP#HA1 requirements.
6.How does Aetrix verify that R7FA2A2AD3CFP#HA1 is sourced from the original manufacturer or authorized distributors?
All R7FA2A2AD3CFP#HA1 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 R7FA2A2AD3CFP#HA1 meets industry standards.
7.What is the process for return or replacement of R7FA2A2AD3CFP#HA1?
All R7FA2A2AD3CFP#HA1 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2A2AD3CFP#HA1, 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 R7FA2A2AD3CFP#HA1 part is unused and in its original packaging.
Return procedure for R7FA2A2AD3CFP#HA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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