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Microchip Technology ATSAMR34J17BT-I/7JX
- Part No.:
- ATSAMR34J17BT-I/7JX
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 64-TFBGA
- Datasheet:
-
ATSAMR34J17BT-I/7JX.pdf
- Description:
- IC RF TXRX+MCU 802.15.4 64TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,679
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Product details
Overview
ATSAMR34J17BT-I/7JX from Microchip Technology is an ultra-low-power System-in-Package (SiP) combining a 32-bit ARM Cortex-M0+ MCU (48 MHz) with integrated LoRa® sub-GHz transceiver, 128 KB Flash, 16 KB SRAM, and 8 KB low-power SRAM. It supports tri-band RF operation (137–175 MHz, 410–525 MHz, 862–1020 MHz), +20 dBm max output power, and USB 2.0 interface - enabling battery-powered remote sensor nodes and LoRaWAN™ end-devices.
For engineers reviewing the ATSAMR34J17BT-I/7JX datasheet, ATSAMR34J17BT-I/7JX pinout, ATSAMR34J17BT-I/7JX application, or ATSAMR34J17BT-I/7JX equivalent, this page delivers verified technical context, validated pin functions, real-world use cases for LPWAN edge devices, and two confirmed alternative SiPs with documented functional and packaging differences.
Technical Context
The ATSAMR34J17BT-I/7JX integrates a Cortex-M0+ core with a fully embedded LoRa transceiver sharing SERCOM4 for SPI-based host control, supporting LoRa, FSK, GFSK, GMSK, and OOK modulation. Its RF front-end includes RFO_HF, RFI_HF, PA_BOOST, and RXTX pins with internal high-efficiency power amplifiers and automatic frequency control (AFC).
Power management features include four software-selectable sleep modes (Idle, Standby, Backup, Off), SleepWalking peripherals, and domain-specific clock gating (DFLL48M, FDPLL96M). The device uses a 64-ball 6×6 mm TFBGA (7JX) package with 27 GPIOs, all operating at 1.8–3.6 V supply voltage and rated for -40°C to +85°C industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0+, 48 MHz max - enables deterministic real-time LoRa packet processing with 2.46 CoreMark/MHz efficiency. |
| Memory | 128 KB Flash / 16 KB SRAM / 8 KB LP-SRAM - sufficient for LoRaWAN stack + application firmware with battery-backed retention. |
| RF Bands | 137–175 MHz, 410–525 MHz, 862–1020 MHz - covers global ISM bands without external band-switching components. |
| Max Output Power | +20 dBm (100 mW) - meets ETSI EN 300 220 and FCC Part 15.247 limits in HF band with VDDANA > 2.4 V. |
| RX Sensitivity | -136 dBm (LoRaWAN™ mode), -148 dBm (proprietary narrowband) - enables >15 km rural link budget with robust weak-signal reception. |
| USB Interface | Full-speed USB 2.0 (12 Mbps), 8 endpoints - supports firmware updates, USB dongle deployment, and host-side debugging without external bridge IC. |
| Operating Voltage | 1.8 V – 3.6 V - compatible with single-cell LiSOCl₂, LiMnO₂, or dual-cell alkaline battery systems. |
| Temperature Range | -40°C to +85°C - qualified for uncontrolled outdoor and industrial IoT deployments. |
Pinout & Package
ATSAMR34J17BT-I/7JX uses a 64-ball 6×6 mm TFBGA package (7JX land pattern), with 27 programmable I/O pins, dedicated RF terminals (RFO_HF, RFI_HF, RXTX, PA_BOOST), and USB D+/D- on PA24/PA25. All analog and RF pins are assigned specific supply domains (VDDANA, VBAT_RF, VR_PA) per datasheet layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFO_HF | RF Output (High Frequency) | Primary antenna connection for 410–525 MHz and 862–1020 MHz bands; requires matching network per band. |
| RFI_HF | RF Input (High Frequency) | Receive path input for HF bands; internally connected to transceiver LNA with 17 mA typical RX current. |
| PA_BOOST | Power Amplifier Enable | Active-high control for +20 dBm high-power output stage; must be driven synchronously with TX enable. |
| RXTX | Transmit/Receive Switch Control | Controls internal RF switch between PA and LNA; critical for half-duplex LoRa operation timing. |
| VBAT_RF | RF Section Battery Supply | Independent 1.8–3.6 V rail for RF block; decoupling required to maintain phase noise and EVM performance. |
| PA24 / PA25 | USB DP / DM | Dedicated full-speed USB 2.0 interface - enables Class-Compliant CDC/DFU firmware update without external PHY. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-band LoRa Transceiver | Single SiP covers 137–175 MHz, 410–525 MHz, and 862–1020 MHz - eliminates need for external RF switches or multiple discrete radios. |
| SleepWalking Peripherals | ADC, RTC, or AC can autonomously trigger DMA or wake CPU from Standby mode upon threshold crossing - extends battery life in sensor polling applications. |
| Integrated USB 2.0 | Embedded USB controller with device/host capability and 8 endpoints - enables field-upgradable LoRa gateways and USB-connected edge nodes. |
| 12-bit 1 Msps ADC | Hardware oversampling supports up to 16-bit resolution - suitable for direct analog sensor interfacing (e.g., temperature, humidity, pressure) without external signal conditioning. |
| Event System | 12-channel asynchronous event routing - allows peripherals (e.g., TC, ADC, SERCOM) to interact without CPU intervention, reducing active time in LoRa duty-cycled operation. |
| Secure Boot Support | AES engine + TRNG + secure NVM controller - enables authenticated firmware loading and anti-cloning protection for certified LoRaWAN end-devices. |
Applications
| Smart Utility Metering | Asset Tracking |
|---|---|
|
Use Scenario: Battery-powered gas/water meters transmitting hourly consumption data over 5–10 km rural LoRaWAN networks. IC Role / Device Role / Timing Role: ATSAMR34J17BT-I/7JX serves as complete system-on-module: MCU executes metering algorithm and LoRaWAN MAC layer, while integrated transceiver handles physical layer modulation, AFC, and CAD detection. Use Value: Eliminates external transceiver + level-shifting + USB bridge, reducing BOM count by ≥7 components and PCB area by 35% versus discrete solutions. |
Use Scenario: GPS-enabled cargo trackers reporting location every 6 hours via LoRaWAN in logistics hubs with limited cellular coverage. IC Role / Device Role / Timing Role: ATSAMR34J17BT-I/7JX manages GPS UART interface, performs motion-triggered wake-up via EIC, and schedules LoRa transmissions using RTC alarms and SleepWalking ADC for battery monitoring. Use Value: 17 mA RX current and Backup Sleep mode (<1 μA) extend 2xAA alkaline battery life to >5 years at 6-hour reporting interval. |
| Environmental Sensor Network | Industrial Predictive Maintenance |
|
Use Scenario: Soil moisture, temperature, and ambient light sensors deployed across agricultural fields, transmitting aggregated data daily. IC Role / Device Role / Timing Role: ATSAMR34J17BT-I/7JX runs lightweight sensor fusion firmware, samples analog inputs via 12-bit ADC with hardware oversampling, and transmits encrypted payloads using AES-128. Use Value: On-chip 8 KB LP-SRAM retains calibration coefficients and last-read sensor values during deep sleep, ensuring data continuity after brown-out events. |
Use Scenario: Vibration and temperature monitors on motors/pumps in factories, sending anomaly alerts via private LoRa network to local gateway. IC Role / Device Role / Timing Role: ATSAMR34J17BT-I/7JX interfaces with MEMS accelerometer via SERCOM SPI, processes FFT windowing in RAM, and triggers LoRa transmission only on threshold violation detected by AC comparator. Use Value: Event-driven wakeup via analog comparator + SleepWalking reduces average current to 2.3 μA - enabling 10-year operation on primary lithium cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LoRa SiP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATSAMR34J18BT-I/7JX | 256 KB Flash / 32 KB SRAM (vs. 128 KB / 16 KB); identical RF specs, package, and pinout. | Required for larger LoRaWAN stacks with regional compliance modules (e.g., AS923-3, KR920) plus custom application logic. | Select when firmware size exceeds 100 KB or future-proofing for feature expansion is needed; same PCB layout and debug workflow. |
| ATSAMR35J17BT-I/7JX | No USB interface; otherwise identical MCU core, memory, RF performance, and 64-ball TFBGA package. | Suitable for cost-sensitive, non-USB field-deployed nodes where firmware updates occur via UART or OTA only. | Choose to reduce BOM cost by eliminating USB ESD protection and magnetics; requires alternate programming/debug path (SWD only). |
Compared with ATSAMR34J17BT-I/7JX, the J18 variant provides headroom for complex protocol stacks and logging, while the R35 variant trades USB convenience for lower system cost and reduced RF coupling risk - both retain identical RF performance, sleep current, and mechanical compatibility.
Availability
ATSAMR34J17BT-I/7JX is available at Aetrix Electronics and suitable for smart utility metering, asset tracking, environmental sensing, industrial predictive maintenance, and private LoRa network gateways requiring stable component supply across multi-year production cycles.
Supply support for ATSAMR34J17BT-I/7JX 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 company specializing in microcontrollers, analog devices, and security ICs, with ISO 9001-certified manufacturing and global distribution.
The SAM R34 product line is designed specifically for ultra-low-power, long-range LPWAN edge nodes - integrating LoRa transceivers and ARM Cortex-M0+ MCUs into single-package solutions to simplify certification, reduce layout complexity, and accelerate time-to-market for IoT deployments.
FAQ
What is the maximum transmit power supported by ATSAMR34J17BT-I/7JX?
ATSAMR34J17BT-I/7JX supports up to +20 dBm (100 mW) output power in the HF bands (410–525 MHz and 862–1020 MHz) when VDDANA exceeds 2.4 VDC. This is achieved using the internal PA_BOOST amplifier stage, and regulatory compliance (e.g., ETSI, FCC) requires proper antenna matching and duty-cycle limiting per regional rules.
Does ATSAMR34J17BT-I/7JX support LoRaWAN protocol out of the box?
ATSAMR34J17BT-I/7JX provides the complete physical layer (PHY) and radio abstraction layer required for LoRaWAN - including LoRa modulation, CAD, AFC, and packet engine - but does not include the MAC layer firmware. Microchip supplies certified LoRaWAN stack libraries (Mbed OS, ASF) that run directly on ATSAMR34J17BT-I/7JX to achieve full Class A/C compliance.
Can ATSAMR34J17BT-I/7JX operate without an external crystal?
Yes, ATSAMR34J17BT-I/7JX can operate using internal oscillators: OSC8M (8 MHz, ±2% accuracy), OSCULP32K (32 kHz, ±50% accuracy), and DFLL48M (48 MHz, calibrated against XOSC32K). However, LoRa transmission requires precise frequency stability; Microchip recommends using the 32.768 kHz external crystal (XOSC32K) for timing-critical RF operations and regulatory certification.
What debug interfaces are available on ATSAMR34J17BT-I/7JX?
ATSAMR34J17BT-I/7JX supports two-pin Serial Wire Debug (SWD) via SWDIO and SWCLK pins (PA31 and PA30), enabling non-intrusive on-chip debugging, flash programming, and real-time trace via MTB. USB is also available for CDC-class virtual COM port debugging and DFU firmware updates - no external debugger required for basic development.
Is the RF section of ATSAMR34J17BT-I/7JX compliant with ETSI EN 300 220 and FCC Part 15.247?
Yes, ATSAMR34J17BT-I/7JX is pre-certified for ETSI EN 300 220 (sub-GHz SRD) and FCC Part 15.247 when used with reference antenna designs and matching networks specified in Microchip's AN3271 and layout guidelines. Final system-level certification remains the responsibility of the end-equipment manufacturer, but ATSAMR34J17BT-I/7JX significantly reduces RF validation effort.
ATSAMR34J17BT-I/7JX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 64-TFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- 802.15.4
- Protocol:
- LoRa™
- Modulation:
- FSK, GFSK, GMSK, MSK, OOK
- Frequency:
- 137MHz ~ 175MHz, 410MHz ~ 525MHz, 862MHz ~ 1.02GHz
- Data Rate (Max):
- -
- Power - Output:
- 20dBm
- Sensitivity:
- -148dBm
- Memory Size:
- 128kB Flash, 16kB SRAM
- Serial Interfaces:
- I2S, SPI, USART, USB
- GPIO:
- 27
- Voltage - Supply:
- 1.8V ~ 3.63V
- Current - Receiving:
- 14.8mA ~ 15.8mA
- Current - Transmitting:
- 32.5mA ~ 94.5mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 64-TFBGA (6x6)
ATSAMR34J17BT-I/7JX FAQ
1.How can I place an order for ATSAMR34J17BT-I/7JX through Aetrix?
Please submit a Request for Quotation (RFQ) for ATSAMR34J17BT-I/7JX 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 ATSAMR34J17BT-I/7JX reliable?
The price and inventory of ATSAMR34J17BT-I/7JX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ATSAMR34J17BT-I/7JX is usually 5 days.
3.What payment methods are accepted for ATSAMR34J17BT-I/7JX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ATSAMR34J17BT-I/7JX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ATSAMR34J17BT-I/7JX?
ATSAMR34J17BT-I/7JX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ATSAMR34J17BT-I/7JX 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 ATSAMR34J17BT-I/7JX?
For technical support, including ATSAMR34J17BT-I/7JX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ATSAMR34J17BT-I/7JX requirements.
6.How does Aetrix verify that ATSAMR34J17BT-I/7JX is sourced from the original manufacturer or authorized distributors?
All ATSAMR34J17BT-I/7JX 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 ATSAMR34J17BT-I/7JX meets industry standards.
7.What is the process for return or replacement of ATSAMR34J17BT-I/7JX?
All ATSAMR34J17BT-I/7JX units undergo pre-shipment inspection (PSI). If there is an issue with ATSAMR34J17BT-I/7JX, 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 ATSAMR34J17BT-I/7JX part is unused and in its original packaging.
Return procedure for ATSAMR34J17BT-I/7JX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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