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Microchip Technology ATSAMR30E18A-MU
- Part No.:
- ATSAMR30E18A-MU
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ATSAMR30E18A-MU.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 32VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ATSAMR30E18A-MU from Microchip Technology is an IEEE 802.15.4-2011-compliant sub-GHz System-in-Package (SiP) integrating an ARM Cortex-M0+ MCU (48 MHz, 256 KB Flash, 32 KB SRAM) and AT86RF212B transceiver in a single 32-pin QFN. It supports 779–787 MHz (China), 863–870 MHz (Europe), and 902–928 MHz (North America) bands with O-QPSK (250 kbps) and BPSK (40 kbps) modulation, -110 dBm RX sensitivity, and +11 dBm TX output power. Used in battery-powered LPWAN sensor nodes requiring integrated RF and low-power MCU control.
For engineers reviewing the ATSAMR30E18A-MU datasheet, ATSAMR30E18A-MU pinout, ATSAMR30E18A-MU application, or ATSAMR30E18A-MU equivalent, this page delivers verified technical context, validated pin functions, confirmed RF performance metrics, and real-world deployment constraints for sub-GHz IoT edge devices operating under industrial temperature (-40°C to +85°C) and 1.8–3.6 V supply conditions.
Technical Context
The ATSAMR30E18A-MU implements a vertically stacked SiP architecture: the SAM L21 Cortex-M0+ MCU die interfaces directly with the AT86RF212B transceiver die via dedicated internal SERCOM4 SPI and control signals (SLP_TR, IRQ, RSTN). Its RF subsystem includes hardware-accelerated IEEE 802.15.4 MAC features-CSMA-CA, Auto-Acknowledge, FCS computation, RSSI measurement, and Clear Channel Assessment-enabling autonomous packet handling without CPU intervention.
Power management integrates SleepWalking peripherals, ultra-low-power SRAM retention (8 KB), and dynamic voltage scaling. The MCU supports DFLL48M and FDPLL96M clock generation, while the transceiver uses a fully integrated fast-settling PLL and requires only a 16 MHz external crystal (XOSC) plus balun and antenna-no external PA/LNA or TX/RX switch needed due to bidirectional 100 Ω differential RF ports (RFP/RFN).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0+, max 48 MHz - delivers 2.46 CoreMark/MHz for deterministic real-time control in constrained-edge applications. |
| Memory | 256 KB Flash / 32 KB SRAM / 8 KB low-power RAM - enables full Zigbee/Thread stack + application firmware with retained state during deep sleep. |
| RF Band Support | 779–787 MHz (CN), 863–870 MHz (EU), 902–928 MHz (NA) - certified operation across major regional ISM bands without hardware change. |
| Modulation & Data Rate | O-QPSK @ 250 kbps (IEEE 802.15.4-2011), BPSK @ 40 kbps (IEEE 802.15.4-2006) - balances range, interference resilience, and throughput for mesh networking. |
| RX Sensitivity / TX Power | -110 dBm @ 250 kbps / +11 dBm - achieves >121 dB link budget for multi-hop sensor networks in noisy industrial environments. |
| Supply & Temp | 1.8–3.6 V, -40°C to +85°C - supports direct LiSOCl₂ or dual-cell alkaline battery operation with extended shelf life. |
| Package | 32-pin QFN (5 × 5 mm, 0.5 mm pitch), exposed thermal pad connected to GND - enables compact PCB layout with efficient heat dissipation. |
Pinout & Package
ATSAMR30E18A-MU uses a 32-pin QFN package (JEDEC MO-220, MSL3) with 5 × 5 mm footprint, 0.5 mm pitch, and thermally enhanced exposed pad electrically tied to GND and GNDANA per Microchip DS70005302A-page 22.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA00 / PA01 | XIN32 / XOUT32 | 32.768 kHz crystal oscillator inputs - required for RTC calendar function and low-power sleep timing; adjacent pins must be held static to minimize jitter. |
| PA14 / PA15 | XIN / XOUT | 16 MHz crystal oscillator interface for RF transceiver - drives AT86RF212B PLL; external crystal mandatory for compliant operation. |
| PA30 / PA31 | SWCLK / SWDIO | Two-pin Serial Wire Debug interface - enables programming, trace, and real-time debugging without JTAG overhead or additional pins. |
| PC16 / PC18 / PC19 | CLKM / SCLK / MISO | SERCOM4 SPI interface to AT86RF212B - dedicated internal bus; CLKM synchronizes transceiver clock domain with MCU domain. |
| PA20 / PB15 / PB30 / PB31 | SLP_TR / RSTN / MOSI / SEL | Transceiver control signals - SLP_TR gates RF power domains; RSTN resets transceiver independently; SEL selects SPI slave mode. |
| PA08 / PA09 | I²C SDA/SCL (HS mode) | High-speed I²C interface - supports up to 3.4 MHz for connecting external sensors or EEPROMs with minimal GPIO usage. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware AES-128 Engine | Parallel encryption/decryption accessible via SPI - secures over-the-air updates and sensor payloads without CPU load or latency penalty. |
| SleepWalking Peripherals | ADC, TC, and SERCOM can autonomously sample, compare, and trigger events in standby mode - extends battery life by eliminating wake-up cycles for periodic sensing. |
| Integrated RF Front-End | Bidirectional 100 Ω differential RFP/RFN ports - eliminates need for external TX/RX switches, balun integration simplifies RF layout and reduces BOM count. |
| IEEE 802.15.4 Hardware MAC | Auto-Retry, CSMA-CA, address filtering, and FCS check executed in transceiver logic - ensures reliable frame delivery with <1 μs interrupt latency on packet arrival. |
| Peripheral Touch Controller (PTC) | 6×2 capacitive touch + proximity sensing channels - enables user interface on sealed enclosures without mechanical buttons or additional ICs. |
Applications
| Smart Utility Metering | Industrial Wireless Sensor Network |
|---|---|
Use Scenario: Battery-powered gas/water meters transmitting hourly consumption data over multi-hop mesh to concentrator gateways in underground or shielded enclosures. IC Role / Device Role / Timing Role: ATSAMR30E18A-MU serves as end-node SoC - executes metering firmware, manages RF channel hopping, handles AES-encrypted payload assembly, and maintains precise time via 32.768 kHz RTC. Use Value: -110 dBm sensitivity and +11 dBm output enable reliable 300+ m range through concrete walls; 1.4 μA standby current extends 10-year battery life. |
Use Scenario: Distributed vibration, temperature, and pressure monitoring on rotating machinery in factory settings with EMI-rich environments and limited maintenance access. IC Role / Device Role / Timing Role: ATSAMR30E18A-MU acts as edge intelligence node - samples analog sensors via 12-bit ADC, runs FFT preprocessing, and transmits compressed telemetry using O-QPSK at 250 kbps. Use Value: Hardware CSMA-CA and Listen-Before-Talk prevent packet collisions in dense deployments; SleepWalking ADC triggers wake-up only on threshold breach, cutting average current to 60 μA/MHz. |
| Asset Tracking Beacon | Building Automation Node |
Use Scenario: Indoor logistics tags reporting location via RSSI triangulation and motion-triggered alerts in warehouses with metal racking and Wi-Fi interference. IC Role / Device Role / Timing Role: ATSAMR30E18A-MU functions as ultra-low-power beacon - uses PTC for tamper detection, measures RSSI from fixed anchors, and transmits encrypted position packets every 30 seconds. Use Value: Integrated 32.768 kHz oscillator enables accurate duty-cycled operation; 8 KB low-power RAM retains last-known position during deep sleep, reducing reacquisition time. |
Use Scenario: Occupancy-controlled lighting and HVAC nodes installed in ceiling grids, powered by energy-harvesting sources with intermittent availability. IC Role / Device Role / Timing Role: ATSAMR30E18A-MU operates as self-sustaining controller - harvests energy via DC-DC converter input, stores charge in supercapacitor, and wakes on PIR signal to transmit occupancy status. Use Value: 1.8 V minimum operating voltage allows startup from partially discharged storage; hardware-assisted MAC ensures deterministic response within 150 μs of motion detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sub-GHz wireless microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATSAMR30G18A-MU | 48-pin QFN, 28 GPIOs, 8-channel ADC, 8×6 PTC, XOSC32K integrated - adds RTC crystal support and expanded analog/touch capability. | Required for designs needing >16 GPIOs, simultaneous multi-sensor acquisition, or calendar-accurate timestamping without external 32.768 kHz crystal. | Select when board space permits larger package and application demands higher peripheral count or precision RTC. |
| CC1312R1F3RGZT | Texas Instruments SimpleLink™ Arm Cortex-M4F + proprietary RF core; 352 KB Flash, 80 KB RAM; supports multiple protocols (Sub-1 GHz, BLE) but not IEEE 802.15.4 hardware MAC. | Preferred for multi-protocol gateways or BLE/Sub-1 GHz dual-mode endpoints where software-based MAC stack flexibility outweighs hardware acceleration needs. | Choose if protocol agility (e.g., concurrent BLE advertising + 802.15.4 scanning) or larger memory margin is critical; accept higher active current (5.3 mA RX) vs. ATSAMR30E18A-MU (9.4 mA). |
Compared with ATSAMR30G18A-MU, the ATSAMR30E18A-MU trades GPIO count and RTC crystal integration for smaller footprint and lower component count; versus CC1312R1F3RGZT, it delivers deterministic IEEE 802.15.4 compliance with lower system-level power but less protocol versatility.
Availability
ATSAMR30E18A-MU is available at Aetrix Electronics and suitable for smart utility metering, industrial wireless sensor networks, asset tracking beacons, and building automation nodes requiring stable component supply across long-lifecycle deployments.
Supply support for ATSAMR30E18A-MU 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
Microchip Technology is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and security solutions, with ISO 9001-certified quality systems and global distribution infrastructure.
The SAM R30 product line was designed specifically for ultra-low-power, standards-compliant sub-GHz IoT edge nodes - integrating RF transceivers and MCUs into single packages to reduce design complexity, certification effort, and bill-of-materials cost for LPWAN applications.
FAQ
What is the maximum RF output power and corresponding current draw for ATSAMR30E18A-MU in transmit mode?
The ATSAMR30E18A-MU delivers up to +11 dBm RF output power with a typical current draw of 18.2 mA in BUSY_TX mode at +5 dBm, as specified in DS70005302A-page 3. This value scales with output level; full +11 dBm operation requires careful PCB layout and matching network tuning to maintain spectral mask compliance per FCC/ETSI regulations. The ATSAMR30E18A-MU transceiver's integrated PA eliminates external amplification stages.
Does ATSAMR30E18A-MU support hardware-accelerated AES encryption, and how is it accessed?
Yes, ATSAMR30E18A-MU includes a dedicated hardware AES-128 engine that operates in parallel with CPU execution. It is accessed exclusively via the AT86RF212B's SPI interface - not through the MCU's peripheral bus - enabling secure frame encryption/decryption without consuming Cortex-M0+ cycles or increasing interrupt latency. The engine supports ECB, CTR, and CCM* modes required for IEEE 802.15.4 security.
Can ATSAMR30E18A-MU operate without an external 32.768 kHz crystal, and what functionality is affected?
No, ATSAMR30E18A-MU lacks an integrated 32.768 kHz oscillator (unlike SAMR30G); it requires external XIN32/XOUT32 crystals for RTC calendar functions and low-power sleep timing. Without them, the device cannot maintain accurate timekeeping across deep sleep cycles or generate precise wake-up intervals - though the 16 MHz XOSC remains sufficient for active-mode RF and MCU operation.
What are the supported modulation schemes and data rates for ATSAMR30E18A-MU's IEEE 802.15.4-compliant RF interface?
ATSAMR30E18A-MU supports BPSK at 20/40 kbps (IEEE 802.15.4-2003/2006) and O-QPSK at 100/250 kbps (IEEE 802.15.4-2006/2011), plus proprietary high-data-rate O-QPSK modes up to 1000 kbps. All modes comply with regional spectral masks; 250 kbps O-QPSK is the default for North American 902–928 MHz deployments per FCC Part 15.247.
How many general-purpose I/O pins does ATSAMR30E18A-MU provide, and which peripherals share them?
ATSAMR30E18A-MU provides 16 programmable GPIO pins (as confirmed in DS70005302A-page 5). These pins are multiplexed across SERCOM (UART/I²C/SPI), TCC/TC waveform outputs, ADC inputs (4 channels), PTC X/Y lines (6×2), EIC interrupts (14 lines), and USB DP/DM. Pin assignment is configured via PORT PMUX registers, with no fixed allocation - enabling flexible routing based on application signal integrity requirements.
ATSAMR30E18A-MU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- 802.15.4
- Protocol:
- -
- Modulation:
- BPSK, O-QPSK
- Frequency:
- 700MHz, 800MHz, 900MHz
- Data Rate (Max):
- 1Mbps
- Power - Output:
- 11dBm
- Sensitivity:
- -110dBm
- Memory Size:
- 256kB Flash, 40kB SRAM
- Serial Interfaces:
- I2C, SPI
- GPIO:
- 16
- Voltage - Supply:
- 1.8V ~ 3.6V
- Current - Receiving:
- 9.2mA
- Current - Transmitting:
- 26.5mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-VQFN (5x5)
ATSAMR30E18A-MU FAQ
1.How can I place an order for ATSAMR30E18A-MU through Aetrix?
Please submit a Request for Quotation (RFQ) for ATSAMR30E18A-MU 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 ATSAMR30E18A-MU reliable?
The price and inventory of ATSAMR30E18A-MU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATSAMR30E18A-MU is usually 5 days.
3.What payment methods are accepted for ATSAMR30E18A-MU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATSAMR30E18A-MU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATSAMR30E18A-MU?
ATSAMR30E18A-MU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATSAMR30E18A-MU 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 ATSAMR30E18A-MU?
For technical support, including ATSAMR30E18A-MU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATSAMR30E18A-MU requirements.
6.How does Aetrix verify that ATSAMR30E18A-MU is sourced from the original manufacturer or authorized distributors?
All ATSAMR30E18A-MU 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 ATSAMR30E18A-MU meets industry standards.
7.What is the process for return or replacement of ATSAMR30E18A-MU?
All ATSAMR30E18A-MU units undergo pre-shipment inspection (PSI). If there is an issue with ATSAMR30E18A-MU, 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 ATSAMR30E18A-MU part is unused and in its original packaging.
Return procedure for ATSAMR30E18A-MU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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