NRF2401A Datasheet, PDF (3/38 Pages) List of Unclassifed Manufacturers – Single chip 2.4 GHz Transceiver

PRODUCT SPECIFICATION
nRF2401A Single Chip 2.4 GHz Radio Transceiver
PIN FUNCTIONS
Pin Name
1
CE
2
DR2
3
CLK2
4
DOUT2
5
CS
6
DR1
7
CLK1
8
DATA
9
DVDD
10 VSS
11 XC2
12 XC1
13 VDD_PA
14 ANT1
15 ANT2
16 VSS_PA
17 VDD
18 VSS
19 IREF
20 VSS
21 VDD
22 VSS
23 PWR_UP
24 VDD
Pin function
Digital Input
Digital Output
Digital I/O
Digital Output
Digital Input
Digital Output
Digital I/O
Digital I/O
Power Output
Power
Analog Output
Analog Input
Power Output
RF
RF
Power
Power
Power
Analog Input
Power
Power
Power
Digital Input
Power
Description
Chip Enable Activates RX or TX mode
RX Data Ready at Data Channel 2 (ShockBurst™ only)
Clock Output/Input for RX Data Channel 2
RX Data Channel 2
Chip Select Activates Configuration Mode
RX Data Ready at Data Channel 1 (ShockBurst™ only)
Clock Input (TX) & Output/Input (RX) for Data Channel 1
3-wire interface
RX Data Channel 1/TX Data Input/ 3-wire interface
Positive Digital Supply output for de-coupling purposes
Ground (0V)
Crystal Pin 2
Crystal Pin 1
Power Supply (+1.8V) to Power Amplifier
Antenna interface 1
Antenna interface 2
Ground (0V)
Power Supply (+3V DC)
Ground (0V)
Reference current
Ground (0V)
Power Supply (+3V DC)
Ground (0V)
Power Up
Power Supply (+3V DC)
Table 3 nRF2401A pin function
PIN ASSIGNMENT
VDD PWR_UP VSS VDD VSS IREF
24 23 22 21 20 19
CE ₁
DR2 ₂
CLK2 ₃
nRF2401A
QFN24 5x5
18
VSS
17 ^VDD
16 ^VSS_PA
4
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 nRF2401A pin assignment (top view) for a QFN24 5x5 package.
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.0
Page 3 of 38
December 2004