Power supply recommendations¶
The W-DALI Module is designed for 3.3V operation. All pins should not have any power applied to them before the +3.3V rail is applied.
To ensure reliable operation, the supply pin should be decoupled with a 100nF ceramic capacitor close to the supply pin. It is also recommended to add a high value ceramic bulk capacitor, such as 47uF, which will reduce the current ripple of the 3.3V net.
During radio transmission, current consumption will rise sharply to 150mA typical, 250mA max. A typical slew rate value is 300A/s during radio transmission.
| Symbol | Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| VDD | Supply voltage | 3.0 | 3.3 | 3.6 | V |
| Vrise | Supply rise time (0 V to 3.7V) | 60 | ms | ||
| IDD | Supply peak current capability | 150 | 250 | mA | |
| IDD_rate | Supply current slew rate | 300 | A/s |