NRF2401 Datasheet, PDF (3/37 Pages) List of Unclassifed Manufacturers – Single chip 2.4 GHz Transceiver

PRODUCT SPECIFICATION
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1
CE
Digital Input
Chip Enable Activates RX or TX mode
2
DR2
Digital Output RX Data Ready at Data Channel 2 (ShockBurst™ only)
3
CLK2
Digital I/O
Clock Output/Input for RX Data Channel 2
4
DOUT2 Digital Output RX Data Channel 2
5
CS
Digital Input
Chip Select Activates Configuration Mode
6
DR1
Digital Output RX Data Ready at Data Channel 1 (ShockBurst™ only)
7
CLK1
Digital I/O
Clock Input (TX) & Output/Input (RX) for Data Channel 1
3-wire interface
8
DATA
Digital I/O
RX Data Channel 1/TX Data Input/ 3-wire interface
9
DVDD
Power
Positive Digital Supply output for decoupling purposes
10 VSS
Power
Ground (0V)
11 XC2
Analog Output Crystal Pin 2
12 XC1
Analog Input Crystal Pin 1
13 VDD_PA Power Output Power Supply (+1.8V) to Power Amplifier
14 ANT1
RF
Antenna interface 1
15 ANT2
RF
Antenna interface 2
16 VSS_PA Power
Ground (0V)
17 VDD
Power
Power Supply (+3V DC)
18 VSS
Power
Ground (0V)
19 IREF
Analog Input Reference current
20 VSS
Power
Ground (0V)
21 VDD
Power
Power Supply (+3V DC)
22 VSS
Power
Ground (0V)
23 PWR_UP Digital Input
Power Up
24 VDD
Power
Power Supply (+3V DC)
Table 3 nRF2401 pin function
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VDD PWR_UP VSS VDD VSS IREF
24 23 22 21 20 19
CE ₁
DR2 ₂
CLK2 ₃
Q5)
QFN24 5x5
18
VSS
17 ^VDD
16 ^VSS_PA
4 ^DOUT2
15 ^ANT2
CS
5
14 ^ANT1
DR1 ₆
13 VDD_PA
7 8 9 10 11 12
CLK1 DATA DVDD VSS XC2 XC1
Figure 2. nRF2401 pin assignment (top view) for a QFN24 5x5 package.
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.0
Page 3 of 37
March 2003