RF70
3
Pin Information
VSS
20
CDVDD
19
VDD
18
VSS
17
IREF
16
V1.0
CE
1
15
VDD
CSN
SCK
2
14
VSS
RFN
3
RF70
13
MOSI
4
12
RFP
MISO
5
11
VDDPA
6
IRQ
7
VDD
8
VSS
9
10
XTALP XTALN
Figure 2 RF70 pin assignments (top view) for the QFN20 4x4 package
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Name
CE
CSN
SCK
MOSI
MISO
IRQ
VDD
VSS
XTALP
XTALN
VDDPA
RFP
RFN
VSS
VDD
IREF
VSS
VDD
CDVDD
VSS
Pin Function
Digital Input
Digital Input
Digital Input
Digital Input
Digital Output
Digital Output
Power
Ground
Analog Output
Analog Input
Power
RF port
RF port
Ground
Power
Analog Output
Ground
Power
Analog Output
Ground
Description
Chip Enable Activates RX or TX mode
SPI Chip Select, Active low
SPI Clock
SPI Slave Data Input
SPI Slave Data Output with tri-state option
Maskable interrupt pin, Active low
Power Supply (1.9 V to 3.6 V DC)
Ground (0 V)
Crystal oscillator, node P (inverter output)
Crystal oscillator, node N (inverter input)
1.8V Regulator output for PA,TX:1.8V,RX:0V
RF output (PA) /input (LNA), port P.
RF output (PA) /Input (LNA), port N.
Ground (0 V)
Power Supply (1.9 V to 3.6 V DC)
Reference current generation. A 22Kohm external resistor
connected to ground.
Ground (0 V)
Power Supply (1.9 V to 3.6 V DC)
Digital regulator output decoupling capacitor
Ground (0 V)
Table 1 RF70 pin functions
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HOPERF [ Hope Microelectronics co., Ltd ]
