Wi-Fi&Bluetooth Module Series
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3.3. Power Supply
The following table shows the power supply pins and ground pins of FC80A.
Table 5: Definition of Power Supply and GND Pins
FC80A is powered by VBAT and VDDIO, and it is recommended to use a power supply chip with
maximum output current more than 1.2 A. The following figure shows the recommended turn up timing of
FC80A.
VBAT
VDDIO
90% VH
2 Sleep Cycles
WLAN_EN
BT_EN
32KHz
(WLAN_SLP_CLK)
Figure 3: Turn Up Timing
1. VBAT and VDDIO should not rise 10
–90 % faster than 40 μs.
2. 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.
Pin Name
Pin No.
Description
Min.
Typ.
Max.
Unit
VBAT
36
Power supply for the module
3.2
3.3
4.5
V
VDDIO
34
Power supply for module
’s
I/O pins
1.7
1.8/3.3
3.6
V
GND
1
,
3
–
8, 10
–
11, 23, 32, 39, 47
NOTE
