DP1283
1
PIN DESCRIPTION
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
NAME
RX
TX
PA(0)
PA(1)
PA(2)
PA(3)
PA(4)
PA(5)
PA(6)
PA(7)
GND
VDD_RF
GND
PB(7)
PB(6)
PB(5)
PB(4)
PB(3)
PB(2)
PB(1)
PB(0)
VDD_UP
SWITCH
SCK
SI
SO
CLKOUT
XIN
XOUT
FLASH_HV
TEST
I/O
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN
IN/OUT
OUT
OUT
IN
OUT
IN
IN
IN
IN
DESCRIPTION
Receiver selection of the antenna switch (not connected by default)
Transmitter selection of the antenna switch (not connected by default)
Input port A pin
Input port A pin
Input port A pin
Input port A pin
Input port A pin
Input port A pin
Input port A pin
Input port A pin
Ground
VDD for the RF
Ground
Input / Output port B pin
Input / Output port B pin
Input / Output port B pin
Input / Output port B pin
Input / Output port B pin
Input / Output port B pin
Input / Output port B pin
Input / Output port B pin
VDD for the uC
RF mode selection / indication
Output clock of the 3-wire interface
Data output of the 3-wire interface
Data input of the 3-wire interface
Output clock at 9.75, 4.875, 2.4375 or 1.21875 MHz
Programming Signal
Programming Signal
High voltage supply for flash memory programming
Set the pin to flash programming mode
? Semtech 2005
3
www.semtech.com
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