Description
The nRF51822-QFAA-R7 is a highly flexible, multi-protocol System-on-Chip (SoC) optimized for ultra-low-power wireless connectivity. It is a cornerstone component for devices requiring Bluetooth Low Energy (BLE), ANT, or proprietary 2.4GHz communication. Designed around the 32-bit ARM Cortex-M0 processor, it provides the essential balance of computational efficiency and radio performance needed for modern IoT and wearable devices.
The IC is famous for its decoupled software architecture, which strictly separates the wireless protocol stack from your application code. This prevents accidental corruption of the radio stack during development and allows for independent firmware updates. Additionally, its hardware-level features, such as the Programmable Peripheral Interconnect (PPI), allow peripherals to exchange data without CPU intervention, which is critical for maximizing battery life.
Note: Product images are for illustrative purposes only. Please consult the official Nordic Semiconductor datasheet for complete electrical specifications, pin assignments, and reference layout schematics.
Features
- Multiprotocol Radio: Simultaneous support for BLE, ANT, and proprietary 2.4GHz stacks.
- Core Architecture: Power-efficient 32-bit ARM Cortex-M0 CPU.
- Memory: 256kB Flash and 16kB RAM for application code storage and data handling.
- PPI System: Enables direct peripheral-to-peripheral communication, reducing CPU wake-time and power consumption.
- Interfaces: Full suite of digital interfaces including SPI, I2C, and UART.
- Package: Compact 48-pin QFN package, widely used in professional electronics.
Benefits
- Ultra-Low Power: Tailored for long-term operation in coin-cell battery-powered devices.
- Simplified Prototyping: The clean separation of application logic and protocol stacks reduces development risks.
- Robust Ecosystem: Supported by comprehensive Nordic SDKs and development tools, making it easier to build stable wireless products.
- Security: Includes on-chip hardware AES encryption to secure wireless data links.
Applications
- Fitness trackers and sports accessories (ANT+)
- Wearable medical sensors
- Smart Home environmental sensor nodes
- Computer peripheral connectivity
- Proximity and location-based beacons
Package Includes
- 1 x nRF51822-QFAA-R7 Bluetooth/ANT SoC (QFN-48)
Specifications
| Parameter | Specification |
|---|---|
| Product Name | nRF51822-QFAA-R7 |
| Device Type | Multiprotocol BLE/ANT SoC |
| Package / Case | QFN-48 |
| Processor Core | 32-bit ARM Cortex-M0 |
| Mounting Type | Surface Mount (SMD) |
| Shipping Weight | 0.001 kg |
| Shipping Dimensions | 4 × 4 × 1 cm |
