TXC101 RFM, TXC101 Datasheet - Page 8

• Manufacturer Part Number: TXC101
• Description: IC TX 300MHZ-1GHZ 16-TSSOP
• Manufacturer: RFM
• Series: TXr

Specifications of TXC101

• Frequency: 300MHz ~ 1GHz
• Applications: General Data Transfer
• Modulation Or Protocol: FSK, OOK
• Data Rate - Maximum: 512kbps
• Power - Output: 3dBm
• Current - Transmitting: 13mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2.2 V ~ 5.4 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Other names: 583-1098-2

2.2 EEPROM Mode
The TXC101 can operate from a single, SPI compatible EEPROM by simply reading the sequential codes
stored in memory. No external microcontroller is required. The codes are read out and processed as
command and data. In this special mode, four pins are configured as inputs with an internal pull-up
resistor. All that is needed are external key switches connected to GND to activate that key’s code
routine. When the key is pressed, the chip automatically begins executing code from a designated point
within the EEPROM. When not in use, the last command of the code execution should be a sleep
command so as to power down the device for maximum battery life. When the device is put into sleep
one of the following seven (7) events can cause the device to wake up:
For each wake-up event there is an internal address assigned as the starting point in EEPROM memory
to begin executing code. These are defined in TABLE 3 as follows:
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©by RF Monolithics, Inc.
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Power-on Reset
Low pulse on Key 1
Low pulse on Key 2
Low pulse on Key 3
Low pulse on Key 4
Low supply voltage output warning
Wake-up timer timeout
Figure 2. Typical EEPROM Mode Application Circuit for 50 Ohm Load
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TXC101 - 4/8/08
Page 8 of 27