TMEB8704 Atmel, TMEB8704 Datasheet - Page 5

• Manufacturer Part Number: TMEB8704
• Description: KIT DEMO FOR RFID TRANSPONDERS
• Manufacturer: Atmel
• Type: Development kitr

Specifications of TMEB8704

• Contents: Board, Cables, Manual and more
• For Use With/related Products: e5530, T5552, T5557, TK5530, TK5551, TK5552, U2270B
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

3.3.2
4781A–RFID–10/05
RF Field Control
Table 3-1.
When tuning mode is disabled, the RFID application kit operates with a fixed frequency,
adjusted nominally to 125 kHz. To control the tuning, the tuning mode has to be enabled by the
RFID application program. The binary combination of two tuning stages enables the selection of
one out of four frequency states. The frequency range is extended typically from 122 kHz to
128 kHz in steps of 2 kHz (specified in the program menu by Low Frequency, Semi Low Fre-
quency, Semi High Frequency and High Frequency).
The currently selected frequency stage is indicated in binary mode on the application board by
the red LEDs Tune 1 and Tune 2 (see
The status of the RF field controlled by the microcontroller is indicated by the yellow LED RF On.
Tuning Mode Selection
Tuning Mode
Disabled
Enabled
Figure 2-2 on page
TMEB8704 Application Note
3).
Jumper J3 Position
1 – 2
2 – 3
5