BLE2U
3
3. Package size and pins of BLE2U-A
Pin No.
Pin Name
Pin Type
Description
1
BLE_MODE
I
BLE mode selection, with built-in pull-up resistor
Low level: Slave mode. High level: Master-slave mode.
2
VCC
P
Power input
3
GND
P
Ground
4
LED
O
Module status and data receive/transmit indication
output pin, active low
5
UD+
USB signal
USB D+ data line
6
UD-
USB signal
USB D - data line
7
TXD
O
UART transmit pin
8
RXD
I
UART receive pin
Note: P: Power. I: Input. O: Output.
4. Recommended bonding pad size for BLE2U-A
Symbol
Value
Unit
A
10.22
mm
B
10.6
C
1.02
D
0.8
E
1.27
F
0.74
G
1.7
