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BLE2U
5. Package size and pins of BLE2U-C
Pin No.
Pin Name
1
GND
2
PANT
3
SWREG_EN
4
BLE_MODE
5
RTS#
6
DCD#
7
RI#
8
CTS#
9
NC
10
NC
11
GND
12
VCC
13
LED
14
DSR#
4
Pin Type
P
A
Optional pin to connect antenna externally (Note 2)
Internal DC-DC power enable, with built-in pull-up resistor
I
Bluetooth mode selection, with built-in pull-up resistor
I
Low level: Slave mode. High level: Master-slave mode.
O
UART MODEM output signal, request to send, active low
I
UART MODEM input signal, data carrier detection
I
I
UART MODEM input signal, clear to send, active low
N
N
P
P
Chip status and data receive/transmit indication output pin, active
O
I
UART MODEM input signal, data device ready
Description
Ground
Enabled when at low level
UART MODEM input signal, ring indicator
Suspended pin. Do not connect to it.
Suspended pin. Do not connect to it.
Ground
Power input
low
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