ATSAMB11G18A-MU-Y Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
ATSAMB11G18A-MU-Y is an ultra-low-power Bluetooth Low Energy 4.1 SoC with an integrated ARM Cortex-M0 core, 256 KB Flash, and 2.3 V to 4.3 V supply in a compact 48-pin QFN package from Microchip. Available from stock worldwide.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 49
- Lifecycle
- OBSOLETE
- Datasheet
- ATSAMB11G18A-MU-Y Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Bluetooth Low Energy 4.1 radio with integrated antenna balun enabling single-chip wireless connectivity
- ARM Cortex-M0 application processor at up to 26 MHz with 256 KB Flash and 64 KB RAM on-chip
- Ultra-low-power sleep current enabling coin-cell battery life of months to years in IoT sensor nodes
- Operating supply range of 2.3 V to 4.3 V supporting direct CR2032 and Li-ion battery operation
Applications
The ATSAMB11G18A-MU-Y is designed for compact, battery-powered IoT devices such as BLE beacons, fitness wearables, and wireless sensor tags requiring multi-month autonomy on a 3 V coin cell. Its integrated Cortex-M0 application processor and BLE 4.1 stack simplify development of proximity detection, asset tracking, and health monitoring accessories. The 48-pin QFN footprint keeps PCB area under 7 mm x 7 mm, making it ideal for space-constrained wearables and smart packaging.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| JESD-30 Code | S-XQCC-N48 |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC48,.24SQ,16 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, VERY THIN PROFILE |
| Supply Voltage-Max | 4.3V |
| Supply Voltage-Min | 2.3V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.4mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | RFSoC |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | 5A992.C |
| HTS Code | 8542.31.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the supply voltage range of ATSAMB11G18A-MU-Y and can it run directly from a CR2032 cell?
The ATSAMB11G18A-MU-Y operates from 2.3 V to 4.3 V, which fully covers the discharge curve of a 3 V CR2032 coin cell. This allows direct battery operation without a regulator, and the ultra-low-power sleep modes help maintain operation across hundreds of mAh of battery capacity over extended deployment periods.
How much processing and storage resources does the integrated Cortex-M0 core provide for application firmware?
The ATSAMB11G18A-MU-Y integrates an ARM Cortex-M0 core running at up to 26 MHz with 256 KB of Flash for application code and 64 KB of SRAM. This is sufficient to run BLE profiles, sensor drivers, and lightweight application logic entirely on-chip without an external MCU, reducing BOM cost and PCB area.
Which BLE version does ATSAMB11G18A-MU-Y support and how does that compare to BLE 5.0 alternatives?
The ATSAMB11G18A-MU-Y implements Bluetooth Low Energy 4.1, which supports connections and advertising roles fully compatible with smartphones and tablets. Compared to BLE 5.0 parts, it lacks the 2x data rate and extended advertising features, but offers a proven, small 48-pin QFN footprint at 2.3 V minimum for cost-sensitive wearable designs.
What package size does ATSAMB11G18A-MU-Y use and how does it affect PCB layout for wearable products?
The ATSAMB11G18A-MU-Y comes in a 7 mm x 7 mm 48-pin QFN package with a 0.5 mm pitch. Its exposed pad and ground ring facilitate low-inductance RF grounding, while the compact footprint allows BLE SoC integration in wristband or patch form factors where total board area is typically under 30 mm x 20 mm.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”