Bubec UM2455 User manual
UM2455
* AN-2455-06 <Rev. 0.0> page 1/ 11
UM2455
M-Power500 Module User Manual
Application Note
AN-2455-06
Version: 0.0
Released Date: 2009/02/10
The content of this technical document is subject to change without
notice. Please contact UBEC for further information.
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 Uniband Electronic Corp.
UM2455
* AN-2455-06 <Rev. 0.0> page 2/ 11
UM2455
M-Power500 Module User Manual
1.GeneralInformation
The M-Power500 module satisfies the requirements of low-power and long-range wireless sensor applications.
It integrates UBEC’s UM2455 2.4GHz transceiver with UBEC’s RF front-end IC UP2268 to extend the
transmitting and the receiving distance at low current consumption. Both the low current consumption and
long distance capability are especially suitable for battery-limited applications. The module’s flexible and
reliable interface allows the users to develop configurations appropriate for their applications.
The M-Power500 module, derived from UBEC’s M-stamp module, operates within the ISM 2.4 – 2.5 GHz
frequency band and contains UBEC’s UM2455, UP2268 and other necessary components such as crystal
oscillator, inductors and capacitors. The transceiver within the UM2455 chip features a maximum of 5 MHz
serial interface SPI bus for control and data transfer. It is a simple SPI interface slave device consisting of a
4-wire bus (SCLK, SI, SO, and SEN) that provide accesses to various subunits such as MAC/BB/RF
control/status registers, TXFIFOs, RXFIFOs and security key table.
The UP2268 is an RF front-end IC integrating a high-efficiency, linear power amplifier (PA), a switch and a low
noise amplifier (LNA). Its low current consumption and inherent power gain enable the designers to meet the
challenges of the battery operation and long distance requirements demanded by many applications. In
addition, the small module form factor (QFN3x3) saves the valuable board space.
2.Features
ISM band 2.405~2.480 GHz operation
3.0~3.6V Operation
Sleep Current: 3uA (typical)
>500m Range (Environment dependent)
Chip Antenna
Receiver Sensitivity: -101dBm
TX Power : 10dBm
TX Current : 54mA
RX Current : 26mA
Size: 38.35mmx 14.00mm
UM2455
* AN-2455-06 <Rev. 0.0> page 3/ 11
Figure 1 shows the top view of a M-Power500 with a chip antenna. The PCB size is 38.35mm x 14.00 mm.
Figure 1. M-Power500 Module
3.PinConfiguration
UM2455 M-Power500 module pin assignments and their functions are described below.
Pin Number Pin Name Type Description
1 NC NC NC
2 NC NC NC
3 NC NC NC
4 GPIO0 DIO General purpose digital I/O, also used as an external
PA enable
5 RESETN DI Global hardware reset pin, active low
6 WAKE DI External wake up trigger, active high / low can be
programmable.
7 INT DO Interrupt pin to micro-processor :
Level trigger, Hi / Low programmable
8 SO DIO Serial interface data output from UM2455 or I2C clock
9 SI DIO Serial interface data input to UM2455 or I2C data
in/out
10 SCLK DI Serial interface clock
11 SEN DI Serial interface enable
12 NC NC NC
13 NC NC NC
14 NC NC NC
15 NC NC NC
16 CLKOUT DIO 20/10/5/2.5 MHz Clock output
17 GND Ground Ground
18 VCC Power 3V
19 VCC Power 3V
20 GND Ground Ground
21~31 NC NC NC
UM2455
* AN-2455-06 <Rev. 0.0> page 4/ 11
UM2455 M-Power500 module pin names and pin number allocation map are shown in Figure 2.
It can interface with other devices such as a sensor, an LED, a host controller, a push button, a joystick or
power relays through GPIO signals.
Figure 2. M-Power500 Module Pin Names and Location Map
UM2455
* AN-2455-06 <Rev. 0.0> page 5/ 11
4.ElectricalSpecifications
Specifications
Item Conditions Min. Typ. Max. Unit
Frequency Range 2.405 2.480 GHz
Input Voltage 3.0 3.6 V
Current Consumption (TX) 3V, Pout=10dBm 54 mA
Current Consumption (RX) 3V, 26
mA
TX Output Power 3V,
Pout(UM2455)=0dBm 10 dBm
TX EVM 3V,
Pout(UM2455)=0dBm 10 18 %
RX Sensitivity 3V, PER<=5% -100 dBm
Communication Range 3V, PER<=5%, LOS 500 m
For detailed functional descriptions and electrical characteristics of the UM2455 chip, please refer to UM2455
datasheet, DS-2455-01.
4.1. TX Output Power
0
2
4
6
8
10
12
2405 2410 2415 2420 2425 2430 2435 2440 2445 2450 2455 2460 2465 2470 2475 2480
Frequence (MHz)
dBm
TX Power
Figure 3. TX Output Power
UM2455
* AN-2455-06 <Rev. 0.0> page 6/ 11
4.2. TX EVM
0
5
10
15
20
25
30
2405 2410 2415 2420 2425 2430 2435 2440 2445 2450 2455 2460 2465 2470 2475 2480
Frequence (MHz)
%
EVM
Figure 4. TX EVM
4.3. RX Sensitivity
-110
-105
-100
-95
-90
-85
-80
2405 2410 2415 2420 2425 2430 2435 2440 2445 2450 2455 2460 2465 2470 2475 2480
Frequence (MHz)
dBm
Sensitivity
Figure 5. RX Sensitivity
UM2455
* AN-2455-06 <Rev. 0.0> page 7/ 11
5.Schematic
The schematic below is suitable for operation with a bias voltage between 3.0 and 3.6V. If a lower bias voltage
between 2.7 and 3.0V is desired, certain resistors in this schematic have to be replaced. Please consult UBEC
for further information.
Uib dE
SEN
SC LK
SI
SO
C7
47pF
C8
27pF
C9
27pF
SG
GS
X1
20MHz
C11 100pF
C10
10nF
INT
C6
0.5pF
C4
0.5pF
L3
7.5nH
L2
4.7nH
C1
10nF
L1
4.7nH
RESETN
C3
1pF
CLKOUT_20M
W AKE W AKE
INT
SO
SI
SC LK
SEN
VCC
VCC
VCC
VCC
VCC
Reference Only
C13
NC
ANT1
ANTENNA
L9
1nH
VCC
C32
NC
VCC
TL
TL
L8
1nH
GND
L7
3.9nH
VCC
TL
TL
TL L5
1nH
TL1
TL
RXEN
VCC
TL
TL
TL
L6
2nH
TL
TL2
TL3
TL4
TXENRXEN
TL
TL
TXEN
C23
330pF
C20
0.1uF
C18 47pF
C25 39pF
C33
NC
R2 1K
C24
330pF
C21
0.1uF
C31
3pF
C30
0.5pF
C29
NC
C16
1pF
C17
47pF
R1
1.5K
C19
0.1uF
C22
330pF
TXout
RX in
C27
15pF
C26
15pF
RXEN
TXEN
RF4
OUT1
1
GND
2
OUT2
3
VA 6
IN 5
VB 4
S1
AS179-92
PA_VL
11
RF_ANT
10
LNA_VL
9
LN A_VL 14
LN A_Vb 15
LN A_Vc c 1 16
GND 17
LNA_out 1
NC 2
PA_in 3
PA_Vcc
6
PA_Vb
5
PA_VL 4
PA_Vcc
7
RF_PA
8
RF_LNA
12
LA N_i n 13
U1
2268-EXT
TXEN
RXEN
RXEN
TXEN
VDD_RF1
1
RF_P
2
RF_N
3
VDD_RF2
4
VDD_GR
5
GND_GR
6
GPIO0
7
GPIO1
8
GP IO2
9
RESTn
10
WAKE
11
INT
12
SO
13
SI
14
SC LK
15
SEN
16
VDD_D 17
GND_D 18
SPI/I 2C 19
SCAN_EN 20
SCAN_M 21
CLK_OUT 22
XTAL32_N 23
XTAL32_P 24
VDD _BG 25
VDD_A 26
XTAL_N 27
XTAL_P 28
VDD _PL L 29
VDD _CP 30
VDD _VCO 31
LO OP_C 32
GND
33
U3
UM2455
GPIO0
RF1
RF2
RF3
RF13RF7RF15
RF4
RF10
RF11
RF 12
L4
2.2nH
RF5
RF6
RF14
RF15
RF16
C5
100nF
C2
10uF
VCC
R2 1K
R5
0R
L10
1.8nH
R3 0R/NA
R4 0R/NA
C7
47pF
C35
10nF
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17 18 18
19 19
20 20
21 21
22 22
23 23
24 24
25 25
26 26
27 27
28 28
29 29
30 30
31 31
J1
CONN PCB 31
SEN
SCLK
SI
SO
INT
RESETN
INT
SO
SI
SCLK
SEN
RESETN
WAKE WAKE
CLKOUT_20M CLKOUT
GPIO0 GPIO0
REFERENCE ONLY
UM2455
* AN-2455-06 <Rev. 0.0> page 8/ 11
6.MechanicalDimension
Figure 6. Module Dimensions
UM2455
* AN-2455-06 <Rev. 0.0> page 9/ 11
7.AntennaTopology
Notice:
(1) Antenna should be put on the edge of the system.
(2) Be sure that there is no obstacles (components and ground ) in the radiation direction
(3) Do not put any ground plane and/or circuit beneath the antenna region for the system boards.
Figure 7. Recommended Antenna Location
Figure 8. Example of Poor Antenna Locations
UM2455
* AN-2455-06 <Rev. 0.0> page 10/ 11
Revision History
Revision Date Description of Change
0.0 2009/02/10
Initial release
UM2455
* AN-2455-06 <Rev. 0.0> page 11/ 11
Contact UBEC:
Headquarters
Address: 6F-1, No. 192, Dongguang Rd., Hsinchu, 300 Taiwan
Tel: +886-3-5729898
Fax:+886-3-5718599
Website: http://www.ubec.com.tw
Sales Services
Tel: +886-3-5729898
Fax:+886-3-5718599
E-mail: [email protected]om.tw
FAE Services
Tel: +886-3-5729898
Fax: +886-3-5718599
E-mail: [email protected]w
DISCLAIMER
ALTHOUGH TO THE BEST KNOWLEDGE OF THE UNIBAND ELECTRONIC CORPORATION (UBEC) THIS
DOCUMENT IS ADEQUATE FOR ITS INTENDED PURPOSES, UBEC MAKES NO WARRANTY OF ANY KIND WITH
REGARD TO ITS COMPLETENESS AND ACCURACY. UBEC EXPRESSLY DISCLAIMS ANY AND ALL OTHER
WARRANTIES, WHETHER EXPRESSED, IMPLIED, OR STATUTORY INCLUDING WITHOUT LIMITATION
WARRANTIES OF TITLE, MERCHANTABILITY, NON-INFRINGENT, AND FITNESS FOR A PARTICULAR PURPOSE,
WHETHER ARISING IN LAW, CUSTOM, CONDUCT OR OTHERWISE.
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