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P4022 Datasheet(PDF) 7 Page - EM Microelectronic - MARIN SA

Part # P4022
Description  Multi Frequency Contactless Identification Device Anti-Collision compatible with BTGs Supertag Category Protocols
PDF  13 Pages
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Manufacturer  EMMICRO [EM Microelectronic - MARIN SA]
Direct Link  http://www.emmicroelectronic.com
Logo EMMICRO - EM Microelectronic - MARIN SA

P4022 Datasheet(HTML) 7 Page - EM Microelectronic - MARIN SA

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PRELIMINARY
EMMICROELECTRONIC-MARINSA
P4022
7
Reading rates
Table 8 below compares reading times at 4 kbit/s
for the six protocols. The optimum repeat delay
setting was chosen in each case. Reading rate is
linear with data bit rate. At a bit rate of 64 kbit/s,
the reading rates are 16 times faster than at 4
kbit/s.
Time (s)
Data rate (kbit/s)
4
64
No of tags
5
30
5
30
Free-running
0.39
10.8
0.022
0.58
Slow-down
0.35
5.8
0.019
0.32
Switch-off
0.29
3.4
0.017
0.19
Fast Free-running
0.18
2.9
0.010
0.15
Fast Slow-down
0.11
1.4
0.007
0.084
Fast Switch-off
0.085
1.0
0.007
0.060
Table 8
Optimum repeat delay settings
Table 9 lists the optimum repeat delay settings for
each of the protocols vs. number of transponders
in a group.
Protocol
Number of tags
3
10
30
100
Free-running
1k
4k
16k
64k
Slow-down
1k
1k
4k
16k
Switch-off
1k
1k
4k
16k
Fast Free-running
256
1k
1k
4k
Fast Slow-down
256
256
1k
1k
Fast Switch-off
256
256
1k
1k
Table 9
Functional description
Block diagram
Shunt
PON
VDD
VSS
GAP
N
P
C
R
TST
VDD
VDD
CG
RG
DG
D1
D3
D2
D4
OSC
CP
Q1
Q2
CR
M
COIL1
GAP
SI
XCLK TMC
VSS
VDD
COIL2
LOGIC
VSS VSS VSS
Figure 4: P4022 Block diagram



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