T5554 ATMEL [ATMEL Corporation], T5554 Datasheet - Page 2
T5554
Manufacturer Part Number
T5554
Description
Standard R/W IDIC (264 Bit) with Integrated Capacitance
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.T5554.pdf
(27 pages)
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2.1
3. T5554 Building Blocks
3.1
2
Pad Layout
Analog Front End (AFE)
T5554
Figure 2-2.
Figure 3-1.
The AFE includes all circuits which are directly connected to the coil. It generates the IC’s power
supply and handles the bidirectional data communication with the reader unit. It consists of the
following blocks:
• Rectifier to generate a DC supply voltage from the AC coil voltage
• Clock extractor
• Switchable load between Coil1/Coil2 for data transmission from the IC to the reader unit
• Field gap detector for data transmission from the reader unit into the IC (write)
(read)
Coil 2
Coil 1
Pad Layout of T5554
Block Diagram
V
DD
Coil 2
Coil 1
V
SS
V
DD
V
SS
Modulator
Test pads
T5554
Mode register
Controller
Test pads
Test logic
(264 bit EEPROM)
Input register
HV generator
Memory
POR
4576D–RFID–12/06
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