Wi-Fi&Bluetooth Module Series
FC800L_Hardware_Design 23 / 50
VBAT
VDDIO
SDIO_DATA3
BT_WAKE_HOST
RTC_CLK
CHIP_EN
Figure 2: Power up Timing
1. VBAT should be up before or at the same time as VDDIO. VDDIO should not be present first or be
held high before VBAT is high.
2. RTC_CLK must held stable before CHIP_EN held high.
3.5. WLAN Application Interface
HOST
FC800L
SDIO3.0
GPIO_1
WLAN_WAKE
SDIO3.0
Figure 3: WLAN Application Interface Connection
The following figure shows the WLAN application interface connection between FC800L and the host.
NOTE