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BLE Part Selection
| Part No | 4531W | 4502W | 4522 | 4501W |
| Product Type： | BLE SoC | BLE SoC | BLE SoC | BLE SoC |
| Technology： | 5.1 | 5.2 | 5.2 | 5 |
| PHY： | 1M/2M/125K/500K | 1M/2M | 1M/2M/125K/500K | 1M/2M |
| Output： | 6dBm | 10dBm | 10dBm | 10dBm |
| Sensitivity： | -96dBm | -97dBm | -99dBm | -97dBm |
| Current-TX： | 4.2mA@0dBm | 6.7mA@0dBm | 4.6mA@0dBm | 8mA |
| Current-RX： | 3.8mA | 6.7mA | 4.0mA | 8mA |
| Sleeping Current： | 1.4uA | 13uA | 13uA | 13uA |
| VDD： | 1.8-3.6V | 1.8-3.6V | 1.8-3.6V | 1.8-3.6V |
| Flash： | 256KB | 512KB | 512/2048KB | 256/512KB |
| RAM： | 48KB | 138KB | 64KB | 138KB |
| UART Baund Rate： | 115200bps | 115200bps | 115200bps | 115200bps |
| Interface： | UART | UART | UART | UART |
| Size： | 4*4mm | 4*4mm | 4*4mm | 4*4mm |
