Datasheet

10
T5557
4517E–RFID–02/03
Table 3. T5557 — Modes of Operation
Figure 12. Answer-On-Request (AOR) Mode
Figure 13. Coil Voltage after Programming of a Memory Block
PWD AOR Behavior of Tag after Reset Command or POR De-activate Function
11
Answer-On-Request (AOR) mode:
· Modulation starts after wake-up with a matching password
· Programming needs valid password
Command with non-matching password
deactivates the selected tag
10
Password mode:
· Modulation in regular-read mode starts after reset
· Programming and direct access needs valid password
0--
Normal mode:
· Modulation in regular-read mode starts after reset
· Programming and direct access without password
No modulation
because AOR = 1
Modulation
AOR wake-up command (with valid PWD)
V
Coil 1- Coil2
POR
Loading block 0
T55571x
T555701
V
Coil 1- Coil 2
Write data to tag
Programming and
data verification
Read programmed
memory block
Read block 1..MAXBLK5.6 ms
(Block-read mode)
(Regular-read mode)
POR/
gap
or
single