User's Manual

Specifications subject to change without notice or obligation.
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Revised 07/27/16
Long Range Wireless Solutions
TL900 Transceiver Module
SPICONFIGURATIONPINOUT
GROUND 1 32 ANALOGIN,DtoA_OUT
+3.3VOLTSOUTPUT 2 31 SDI_MASTER
+3.3to12VOLTSINPUT 3 30 GROUND
UARTINPUTforTransmit 4 29 SDO_MASTER
UARTOUTPUTfromReceive 5 28 SCK_MASTER
CTS\OUTPUT,(SLEEPEN\INPUT*) 6 27 SS#_MASTER
BEEPOUTPUT 7 26 RSSI\OUT,*DtoA_SEL
LEARN\INPUT,LEARNLEDOUTPUT 8 25 OUTPUT4
BEEP\,(CONFIGRESISTORGND*) 9 24 OUTPUT3
ACK_ENABLE\INPUT* 10 23 OUTPUT2
NOTUSED,leaveunconnected. 11 22 OUTPUT1
INPUT11221SDI_SLAVE
INPUT21320SDO_SLAVE
GROUND 14 19 GROUND
INPUT31518SCK_SLAVE
INPUT4 16 ______17 SS#_SLAVE
TL900SPI
TL900-SPI Notes
1. A 2.2k resistor between SLEEPEN and CONFIG
RESISTOR GND will allow the unit to sleep if idle for 30
seconds.
2. A 2.2k resistor between ACK_ENABLE and CONFIG
RESISTOR GND will allow the unit to give an
acknowledgment reply after the receipt of an
acknowledgment request. For point-to-multipoint
applications only one acknowledgment should be
enabled.
3. The use of CONFIG RESISTOR GND minimizes idle
current for low power sleep mode. The resistors are
sampled on power up.
4. A 2.2k resistor between DtoA_SEL (pin 26) and
CONFIG_RESISTOR_GND will select DtoA_OUT
configuration instead of ANALOG_IN.