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Lustech
LRF020
Low Power 2.4 GHz Transceiver for
IEEE 802.15.4 Standard
The content of this technical document is subject to change without
notice. Please contact Lustech for further information.
Version: 0.0
Released Date:2010/7/26
All rights are strictly reserved. Any portion of this document shall not be reproduced, copied, or
transformed to any other forms without prior permission from Lustech.
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UZ2400
Low Power 2.4 GHz Transceiver for IEEE 802.15.4 Standard
1. General Information
Lustech
The LRF020 module is an IEEE 802.15.4 compliant solution that satisfies the requirements of low-cost and
long-range wireless applications. The module, containing UBEC’s UZ2400D, UP2206, UA2725 and other
necessary components, operates in the ISM 2.4 GHz frequency band. The corresponding MCU can accesses to
various UZ2400D internal subunits, such as registers, FIFOs, and security key table, via a 4-wire SPI bus. Its
small form factor saves valuable board spaces and provides a reliable delivery of critical data between the
devices.
2. Features
‰ 2.4GHz IEEE 802.15.4 compliant
‰ 3.0 ~ 3.6V Operation
‰ Effective Distance: 1000 meters (line of sight, environment dependent, typical)
‰ MMCX Connector or LTCC antenna on PCB(optional when mass production)
‰ Additional 2 GSG (ground-signal-ground) Interfaces Provided
‰ RX Sensitivity: -100dBm, typical
‰ TX Output Power: 18dBm, typical
‰ TX Current Consumption: 210mA, typical
‰ RX Current Consumption: 34mA, typical
‰ Dimension: 38.4mm x 14mm (without MMCX connector)
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3. Pin Configuration
Lustech
3.1. Pin Assignment
Top view of a LRF020 Module and its pin allocation map are shown in Figures 1 and 2 respectively.
Figure 1. Top View of LRF020 Module without MMCX
Figure 2. Pin Allocation
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3.2. Pin Description
Lustech
Pin type abbreviation: A = Analog, D = Digital, I = Input, O = Output, P = Power, G = Ground
Pin Number
1
2
3
4
5
6
7
Pin Name
GPIO0
NC
NC
NC
RESETN
WAKE
INT
8
9
10
11
12
13
14
15
16
17
18
19
20
21~31
SO
SI
SCLK
SEN
NC
NC
NC
NC
CLKOUT
GND
VCC
VCC
GND
NC
Type
DIO
DI
DI
DO
DO
DIO
DI
DI
DO
G
P
P
G
Description
General purpose digital I/O, also used as an external PA enable
No connection
No connection
No connection
Global hardware reset pin, active low
External wake up trigger, active high / low can be programmable.
Interrupt pin to microprocessor :
Level trigger, Hi / Low programmable
Serial interface data output from UZ2400 or I2C clock
Serial interface data input to UZ2400 or I2C data in/out
Serial interface clock
Serial interface enable
No connection
No connection
No connection
No connection
32 / 16 / 8 / 4 / 2 / 1 MHz clock output
Ground
Power Supply
Power Supply
Ground
No connection
Table 1. Pin Assignment
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4. Electrical Specifications
Lustech
Test conditions: TA = 25°C, VDD = 3.3 V, (Pout,UZ2400D=-10dBm)
ITEM
Condition
Frequency
Supply voltage
Specification
Min.
Typ.
2405
3.0 3.3
Max.
2480
3.6
TX Current consumption
RX Current consumption
TX Output power
TX EVM
RX sensitivity
Communication Range
(Pout =18 dBm)
Pout(UZ2400)=-10dBm
Pout(UZ2400)=-10dBm
PER<=1%
O-QPSk 250kbps
Throughput >120kbps at
250kbps data rate, LOS
Table 2. Electrical Specifications
210
34
18
14
-100
1000
For detailed electrical characteristics of the UZ2400D chip, please refer to UZ2400D datasheet.
Unit
MHz
V
mA
mA
dBm
%
dBm
m
4.1. TX Output Power
TxPower vs. Channels
22
21
20
19
18
17
16
15
14
13
2405 2410 2415 2420 2425 2430 2435 2440 2445 2450 2455 2460 2465 2470 2475 2480
Channel (MHz)
Figure 3. Typical TX Output Power
*Note. Set LREG0x274=0xc6 between channel 2445MHz to 2480MHz.
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