No.
Name of Signal
Feature
I/O Direction Signal Level
1
NC
-
-
-
2
NC
-
-
-
3
DC
-
-
-
4
DD
-
-
-
5
NC
-
-
-
6
PIO7
Digital Input or Output Port
-
-
7
PIO6
Digital Input or Output Port
-
-
8
NC
-
-
-
9
NC
-
-
-
10
VCC
3.3V DC
11
PIO5
Digital Input or Output Port
Input/output
TTL
12
PIO4
Digital Input or Output Port
Input/output
TTL
13
PIO3
Digital Input or Output Port
Input/output
TTL
14
PIO2
Digital Input or Output Port
Input/output
TTL
15
PIO1 / PWM 1
Digital Input or Output Port / PWM
Input/output
TTL
16
PIO0 / PWM 0
Digital Input or Output Port / PWM
Input/output
TTL
17
Advertising Control Advertising on/off Control
Input
TTL
18
Power Save Control Power Save on/off Control
Input
TTL
19
Power Save Status
Power Save Operation Status
Output
TTL
20
Advertising Status
Advertising Operation Status
Output
TTL
21
TX
Transfer Data ( Data out )
Output
TTL
22
RX
Received Data ( Data In )
Input
TTL
23
ADC1
Analog to Digital Convertor
Input
0~3.3V
24
ADC0
Analog to Digital Convertor
Input
0~3.3V
25
Reset
Reset
Input
-
26
GND
Ground
27
Ant
Chip Antenna
12. FBL770BC PIN Description
–
Detail
1
9
1
9
10
16
10
Top
Bottom
16
25
17
25
17
27
26
