Data Sheet
Table Of Contents
- 1. Feature List
- 2. Typical Applications
- 3. Design Guidelines
- 4. Pin-Out Description
- 5. Power Control
- 6. Interface
- 7. Antenna
- 8. Bluetooth® Software Stack
- 9. Host Interface
- 10. Connection Examples
- 11. Electrical Characteristics
- 12. RF Characteristics
- 13. Packaging Specifications
- 14. Soldering Recommendations
- 15. Tape and Reel Packaging
- 16. Certifications
- 17. Ordering Guide
- 18. Revision History
4. Pin-Out Description
This section contains a description of the BT122 pin-out. Each pin may have one or more functions which are all listed in tables. The
pin-out is shown in the figure below
1
2
3
4
5
6
7
8
20
19
18
17
16
15
14
13
9
10
11
12
GND
GND
GND
GND
GND
GND
GND GND
TOP VIEW
PA0
PA1
PC8
PC9
VDD
RESET
PF0
PF1
PF2
PF3
PF4
PF5
Figure 4.1. BTT122 Pin-Out (Top View)
4.1 Power, Ground, Reset, and GPIO Pins
Power supply, ground, reset signal, GPIO related pins are listed in the table below.
Table 4.1. Power, Ground, Reset, and GPIO Pins
Pin /Pad Function Description
17 VDD Module power supply input pins.
1,2,3,8,13,18,
19,20
GND
Ground pin. These are all connected together internally but they
should all be individually connected directly to a solid ground
plane with vias in close proximity to the pins. This requirement
concerns especially the antenna connections.
16 RESET
Module reset signal pins. Reset input, active low. To apply an ex-
ternal reset source to this pin, it is required to only drive this pin
low during reset, and let the internal pull-up ensure that reset is
released.
4,5,6,7,9,10,
11,12,14,15
GPIO General purpose Input/Output
BT122 Data Sheet
Pin-Out Description
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