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參數(shù)資料
| 型號： | HTCM400 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | HITAG core module hardware |
| 中文描述： | 此外，HITAG核心模塊的硬件 |
| 文件頁數(shù)： | 11/24頁 |
| 文件大?。?/td> | 112K |
| 代理商： | HTCM400 |
2001 Oct 04
11
Philips Semiconductors
Product specification
HITAG core module hardware
HTCM400
7.7.1
A
NTICOLLISION MODE
Anticollision mode in long range applications permits you
to process several HITAG 1 transponders simultaneously.
Theoretically up to 2
32
transponders can be processed
simultaneously. In practice this number is limited because
of the mutual influence of the transponders - they detune
each other, if there are too many too close to each other.
In proximity applications using HITAG 1 or HITAG 2
transponders, only one transponder is handled even if
there are several transponders within the communication
field of the antenna. In this case either no communication
takes place or the ‘stronger’ or closer transponder takes
over. By muting a selected transponder (HALT mode)
another transponder that is to be found in the
communication field of the antenna can be recognized.
7.7.2
M
ONITORING THE SUPPLY VOLTAGE
Supply voltage is controlled by a Watchdog circuit which
triggers a system reset if the supply voltage drops below
4.75 V or if the microcontroller fails.
7.7.3
A
NTENNA RUPTURE OR SHORT
-
CIRCUIT
TheHTCM400doesnotgetpermanentlydamagedincase
of an antenna rupture or a brief antenna short-circuit.
8
ELECTRICAL SPECIFICATIONS
Notes
1.
2.
3.
With the power supply filter described in Section 7.4.2.
The carrier is periodically blanked completely, the information is located in the intervals between the pauses.
Modulation ratio depending on the distance between transponder and reader module.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Power supply
V
P
I
P
P
V
ripple(p-p)
DC supply voltage
DC supply current
power dissipation
ripple voltage
(peak-to-peak value)
4.75
5.0
0.5
5.25
100
5
25
40
V
mA
W
mV
mV
mV
f
ripple
is <10 kHz; note 1
f
ripple
is 10 to 20 kHz; note 1
f
ripple
is
≥
20 kHz; note 1
Modulation
m
TX
modulation ratio of reader module
to transponder
modulation ratio of transponder to
reader module
Amplitude Shift Keying (ASK)
100
(2)
%
m
RX
Amplitude Shift Keying (ASK);
note 3
%
Temperature
T
oper
T
stg
operating temperature
storage temperature
25
40
+85
+85
°
C
°
C
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