TXC102 Datasheet PDF - RFM

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TXC102
RFM

Part Number TXC102
Description Multi-channel High tae rate Programmable
Page 30 Pages


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Complies with Directive 2002/95/EC (RoHS)
Product Overview
TXC102 is a highly integrated single chip, multi-channel, low power, high
data rate programmable RF transmitter ideal for the worldwide market and
operates in the 433, 868 and 915 MHz frequency bands. The TXC102 is
FCC & ETSI certifiable and improves upon the TXC101 with improved
phase noise and is capable of higher output power. All critical RF and
baseband functions are completely integrated in the chip, thus minimizing
external component count and simplifying design-ins. Its small size with
low power consumption makes it ideal for various short range radio
applications.
The TXC102 is a dual mode solution. In the Micro controller mode, a
generic 10MHz crystal and a low-cost microcontroller are the only
requirements to create a complete Transmitter link. In the EEPROM mode,
the TXC102 can function as a complete data transmitter with any SPI
compatible EEPROM and does not need a micro controller. This makes it
an ideal solution for a variety of simple short range radio applications.
Key Features
Modulation: OOK/FSK
Frequency Hopping Spread Spectrum capability
Operating frequency: 433/868/915 MHz
Low current consumption (TX current @ 0dBm ~ 13mA)
Wide Operating supply voltage: 2.2 to 5.4V
Low standby current (0.2uA)
OOK Data rate up to 512kbps
FSK Data rate up to 256kbps
Support for Multiple Channels
[433 Band]: 380 Channels (25kHz),
[868 Band]: 761 Channels (25kHz)
[915 Band]: 1040 Channels (25kHz)
Generic 10MHz Xtal reference
Processor or EEPROM Mode Operation
Integrated PLL, IF & Baseband Circuitry
Integrated, Programmable Low Battery Voltage Detector
Programmable Push Button Control
Programmable Output RF Power
Programmable, Positive/Negative FSK Deviation
Programmable Clock Output Frequency
Standard SPI interface
External Wake-up Events
TTL/CMOS Compatible I/O pins
Automatic Antenna tuning circuit
No Manual Adjustment Needed for Production
Very few external components requirement
Small size plastic package: 16-pin TSSOP
Standard 13 inch Reel, 2000 pieces.
16-TSSOP package
Popular applications
Remote control applications
Remote control applications
Active RFID tags
Wireless PC Peripherals
Automated Meter reading
Home & Industrial Automation
Security systems
Remote keyless entry
Automobile Immobilizers
Sports & Performance monitoring
Wireless Toys
Medical equipment
Low power two way telemetry systems
Wireless mesh sensors
Wireless modules
RF Monolithics, Inc.
4441 Sigma Road
Dallas, Texas 75244
rev01
(800) 704-6079 toll-free in U.S. and Canada
www.rfm.com Email: info@rfm.com
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Table of Contents
Table of Contents .......................................................................................................... 2
1.0 Pin Descriptions ...................................................................................................... 3
1.1 Processor Mode Pin Configuration .................................................................. 3
1.2 EEPROM Mode Pin Configuration .................................................................... 4
2.0 Functional Description ........................................................................................... 5
2.1 TXC102 Processor Mode Application .............................................................. 5
RF Transmitter Matching ..................................................................................... 5
Antenna Design Considerations........................................................................... 6
PCB Layout Considerations ................................................................................. 6
2.2 EEPROM Mode Application............................................................................... 8
3.0 TXC102 Functional Characteristics ..................................................................... 11
Output Amplifier ....................................................................................................... 11
Frequency Control (PLL) and Frequency Synthesizer ............................................. 11
Transmit Register..................................................................................................... 11
Crystal Oscillator...................................................................................................... 12
Wake-Up Mode ........................................................................................................ 12
Low Battery Detector ............................................................................................... 12
Key Switch Inputs .................................................................................................... 12
SPI Interface ............................................................................................................ 13
4.0 Control and Configuration Registers .................................................................. 14
Table of Control and Configuration Registers .......................................................... 14
Status Register ........................................................................................................ 15
Configuration Register [POR=8080h] ...................................................................... 16
Transmit Power Configuration Register [POR=B0h] ................................................ 18
Transmit Command Register ................................................................................... 19
Frequency Setting Register [POR=A7D0h].............................................................. 20
Data Rate Setup Register [POR=C800h]................................................................. 21
Button Command Register [POR=CA00h] ............................................................... 22
Sleep/Clock Command Register [POR=C400h]....................................................... 23
Wake-up Timer Period Register [POR=E000h]........................................................ 24
Battery Detect Threshold Register [POR=C200h].................................................... 25
Power Management Register [POR=C000h] ........................................................... 26
5.0 Maximum Ratings.................................................................................................. 27
Recommended Operating Ratings........................................................................... 27
6.0 DC Electrical Characteristics ............................................................................... 27
7.0 AC Electrical Characteristics ............................................................................... 28
8.0 Package Information ............................................................................................. 30
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1.0 Pin Description
Processor Mode
Pin Name Description
1 SDI
SPI Data In
2 SCK
3 nCS
SPI Data Clock
Chip Select Input– Selects the chip for an SPI data transaction. The pin must be pulled
‘low’ for a 16-bit read or write function. See Figure 4 for timing specifications.
4 SW1
Switch or Push Button Input 1 with Internal pull-up resistor
5 SW2
Switch or Push Button Input 2 with Internal pull-up resistor
6 SW3
Switch or Push Button Input 3 with Internal pull-up resistor
7 SW4
Switch or Push Button Input 4 with Internal pull-up resistor
8 ClkOut Optional host processor Clock Output
Xtal - Connects to a 10MHz series crystal or an external oscillator reference. The circuit
contains an integrated load capacitor (See Configuration Register) in order to minimize
the external component count. The crystal is used as the reference for the PLL, which
generates the local oscillator frequency. The accuracy requirements for production
9
Xtal/Ref
tolerance, temperature drift and aging can be determined from the maximum allowable
local oscillator frequency error. Whenever a low frequency error is essential for the
application, it is possible to “pull” the crystal to the accurate frequency by changing the
load capacitor value.
Ext Ref – An external reference, such as an oscillator, may be connected as a reference
source. Connect through a .01uF capacitor.
10 GND
System Ground
11 MODE Mode Select – Connect to VDD for Processor Mode.
12 RF_P RF Diff I/O
13 RF_N
14 nIRQ
15 VDD
16 MOD
RF Diff I/O
Interrupt Request – Interrupt Request Output and Status Register Data Read Output.
Supply Voltage
Modulation Input – Serial data input for FSK or OOK modulation
1.1 Processor Mode Pin Configuration
SDI
SCK
nCS
SW1
SW2
SW3
SW4
CLKOUT
TOP VIEW
1 16
2 15
3 14
4
5
TXC102
13
12
6 11
7 10
89
MOD
VDD
nIRQ
RF_N
RF_P
MODE
GND
Xtal/Ref
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EEPROM Mode
Pin Name Description
1 SDI
SPI Data In
2 SCK
3 nCS
SPI Data Clock
Chip Select Input - Selects the chip for an SPI data transaction. The pin must be pulled
‘low’ for a 16-bit read or write function. See Figure 4 for timing specifications.
4 SW1
5 SW2
6 SW3
7 SW4
Switch or Push Button Input 1 with Internal pull-up resistor
Switch or Push Button Input 2 with Internal pull-up resistor
Switch or Push Button Input 3 with Internal pull-up resistor
Switch or Push Button Input 4 with Internal pull-up resistor
8 SDO
SPI Data Out
Xtal - Connects to a 10MHz series crystal or an external oscillator reference. The circuit
contains an integrated load capacitor (See Configuration Register) in order to minimize
the external component count. The crystal is used as the reference for the PLL, which
generates the local oscillator frequency. The accuracy requirements for production
9
Xtal/Ref
tolerance, temperature drift and aging can be determined from the maximum allowable
local oscillator frequency error. Whenever a low frequency error is essential for the
application, it is possible to “pull” the crystal to the accurate frequency by changing the
load capacitor value.
Ext Ref – An external reference, such as an oscillator, may be connected as a reference
source. Connect through a .01uF capacitor.
10 GND
System Ground
11 MODE Mode Select – Connect to VSS for EEPROM Mode.
12 RF_P RF Diff I/O
13 RF_N
14 nBD
15 VDD
16 MOD
RF Diff I/O
Low Battery Detect – When the battery voltage falls below the programmed level this
output goes “low”. The voltage level is programmable through the Battery Detect
Threshold Register.
Supply Voltage
Not used. Tie to VDD or VSS
1.2 EEPROM Mode Pin Configuration
SDI
SCK
nCS
SW1
SW2
SW3
SW4
SDO
TOP VIEW
1 16
2 15
3 14
4
5
TXC102
13
12
6 11
7 10
89
NC
VDD
nBD
RF_N
RF_P
MODE
GND
Xtal/Ref
4



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