TN100
High performance CSS transceiver enabling location awareness
Data Brief
Features
■
High precision ranging: 2 m indoors and 1 m
outdoors
■
Supply voltage range from 2.3 V to 2.7 V
■
Current consumption: 27 mA (RX), 30 mA (TX)
@ 0 dBm
■
Standby current with active RTC: 2 µA
■
RSSI sensitivity: -95 dBm
■
Single-chip solution for ISM 2.45 GHz RF
transceiver
■
Built-in ranging capability for link distance
estimation
■
Modulation technique: chirp spread spectrum
(CSS)
■
FDMA support: 7 channels, 3 non-overlapping
■
32.768 kHz clock available for external µC
■
Data rates: 2, 1 Mbps; 500, 250, 125, 62.5,
31.25 kbps
■
Integrated fast SPI interface (32 Mbps)
■
Integrated MAC controller with FEC, CRC
checking
■
CSMA/CA, FDMA, and TDMA modes
■
Adjustable output power from -33 dBm to
0 dBm
■
Receiver sensitivity: -97 dBm @ 250 kbps,
FEC, and BER=10-3
■
Automatic retransmission and
acknowledgement
■
In-band carrier-to-interference C/I = 0 to 3 dB
@ 250 kbps & C=-80 dBm
■
Automatic address matching
■
■
Supports external power amplifier to increase
output power
Industrial temperature range from -40°C to
+85°C
■
QFN48 package
December 2006
Rev 1
For further information contact your local STMicroelectronics sales office.
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www.st.com
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Description
1
TN100
Description
The TN100 transceiver is a highly integrated mixed signal chip that uses the wireless
communication technology CSS (chirp spread spectrum) developed by Nanotron
Technologies.
With its unique ranging capability, TN100 can measure the link distance between two nodes.
Thus, TN100 supports location awareness applications including location based services
(LBS) and asset tracking (2D/3D RTLS). Ranging is performed during regular data
communication and does not require additional infrastructure, power, and/or bandwidth. For
an even better ranging accuracy, a high precision mode is provided. SDS-TWR algorithm
(symmetrical double-sided two-way ranging) allows superior accuracy even with the use of
low cost crystals for the oscillators.
The TN100 transceiver IC is designed to build up robust, short distance wireless networks
operating in the 2.45 GHz ISM band with extremely low power consumption over a wide
range of operating temperatures.
The TN100 supports 7-frequency channels with 3 non-overlapping channels. This provides
support for multiple physically independent networks and improved coexistence
performance with existing 2.4 GHz wireless technologies. Data rates are selectable between
31.25 kbps and 2 Mbps. Due to the chip's unique chirp pulse, adjustment of the antenna is
not critical. This significantly simplifies the system's installation and maintenance ("pick-andplace").
The TN100 transceiver includes a sophisticated MAC controller with CSMA/CA and TDMA
support as well as forward error correction (FEC) and 128-bit hardware encryption. It also
provides scrambling, automatic address matching, and packet retransmission, thus
minimizing the requirements for microcontroller and software.
Through its high-speed standard SPI interface, the TN100 can be interfaced with a wide
range of external micro-controllers. It includes a 4 kbits frame buffer which allows even very
slow microcontrollers to work with the transceiver. This means that several receive and
transmit frames can be stored simultaneously in the buffers. This solution eliminates the
problems of different peak data rates between air and microcontroller interfaces.
Target applications for the TN100 include:
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●
Asset tracking
●
Enabling 2D/3D real-time location systems
●
Security
●
Industrial monitoring and control
●
Medical applications
TN100
2
Pin assignment
Pin assignment
This section provides a brief overview of the location and function of each pin.
Figure 1.
QFN48 package top view
Table 1.
Pin descriptions
Pin
Signal
Direction
Description
1
TestCom
LF signal
Test pin for analogue signals
2
VSSA
Supply
Power supply for analog parts
3
VSSA
Supply
Power supply for analog parts
4
VDDA
Supply
Power supply for analog parts
5
Xtal32kP
Analog IO
Crystal 32768 Hz, input from external 32768
Hz frequency reference
6
Xtal32kN
Analog IO
Crystal 32768 Hz
7
VSSD
Supply
8
Xtal32MP
Analog IO
Crystal 32.0 MHz, input from external 32 MHz
frequency reference
9
Xtal32MN
Analog IO
Crystal 32.0 MHz
Power supply for digital parts
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Pin assignment
TN100
Table 1.
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Pin descriptions (continued)
Pin
Signal
Direction
Description
10
VSSD
Supply
11
POnReset
Digital input
12
μCVCC
Supply
13
SpiClk
Digital input
SPI clock
14
SpiSSn
Digital input
SPI slave selected
15
SpiTxD
Digital output
SPI transmit data (MISO)
16
SpiTxD
Digital Input
SPI receive data (MOSI)
17
VDDD
Supply
18
D0
Digital IO
Digital input or output line 0
19
D1
Digital IO
Digital input or output line 1
20
D2
Digital IO
Digital input or output line 2
21
D3
Digital IO
Digital input or output line 3
22
VDDD
Supply
23
μCIRQ
Digital output
24
VSSD
Supply
Power supply for digital parts
25
VDDD
Supply
Power supply for digital parts
26
VSSD
Supply
Power supply for digital parts
27
Tx/Rx
Digital output
28
VDDD
Supply
Power supply for digital parts
29
VSSD
Supply
Power supply for digital parts
30
Test
Digital IO
Pin for digital tests
31
RRef
Analog IO
Pin for external reference resistor
32
VDDA
Supply
33
TestRxP
LF Signal
Test pin for RX signals
34
TestRxN
LF Signal
Test pin for RX signals inverted
35
VSSA
Supply
Power supply for analog parts
36
VDDA
Supply
Power supply for analog parts
37
VDDA
Supply
Power supply for analog parts
38
VSSA
Supply
Power supply for analog parts
39
RxN
RF input
Differential receiver input (inverted)
40
RxP
RF input
Differential receiver input
41
VSSA
Supply
Power supply for analog parts
42
VSSA
Supply
Power supply for analog parts
Power supply for digital parts
Power on reset line
Switchable power supply for external
microcontroller
Power supply for digital parts
Power supply for digital parts
Interrupt request to external microprocessor
Output signal to distinguish between transmit
and receive
Power supply for analog parts
TN100
Pin assignment
Table 1.
Pin descriptions (continued)
Pin
Signal
Direction
Description
43
TxN
RF output
Differential transmitter output (inverted)
44
TxP
RF output
Differential transmitter output
45
VSSA
Supply
Power supply for analog parts
46
VBalun
Supply
Power supply for external balun (DC for
TxP/TxN; needs to be blocked with an
external capacitor in the 27pF to 47pF range
close to balun)
47
VDDA
Supply
Power supply for analog parts
48
VDDA
Supply
Power supply for analog parts
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Ordering information
3
6/8
TN100
Ordering information
Part number
Temperature
range
Package
Packing
Marking
TN100Q
-40°C to +85°C
QFN48
Tube
TN100Q
TN100QT
-40°C to +85°C
QFN48
tape & reel
TN100QT
TN100
4
Revision history
Revision history
Table 2.
Document revision history
Date
Revision
15-Dec-2006
1
Changes
Initial release.
7/8
TN100
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