BM502L is designed from a Atmosic ATM2202 Bluetooth??5 standard-compliant SoC. it features a Lowest Power Radio?baseband?to provide 10 to 100 times lower power. The module built in 1MB flash and 128KB RAM. It is suitable for a broad array of applications such as wearables, personal and asset trackers, beacons, remotes, locationing devices, keyboards and mice.
Below table is the module specification.
| Frequency | 2.4GHz ~ 2.48GHz ISM band |
| Protocol | BLE V5.0 |
| Modulation | GFSK@125Kbps, 500Kbps, 1Mbps, 2Mbps |
| TX Power | -20dbm ~+4dbm |
| RX Sensitivity | -95dbm |
| Antenna | external |
| Control | TTL UART（up to 1Mbps） |
| Voltage | VCC:1.8V~3.3V |
| Working temperature | -40 ~ 85℃ |
| Active Rx | 1mA |
| Active Tx @ 0dbm | 2.5mA |
| Retention @32KB RAM | 2uA |
| Deep sleep | 0.8uA |
| Soc Off | 0.3uA |
| Broadcast in 1 seconds period@0dbm | average<8uA |
