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参数资料
| 型号： | EM4005B5CB2RC |
| 英文描述： | Analog Miscellaneous |
| 中文描述： | 模拟杂项 |
| 文件页数： | 5/8页 |
| 文件大小： | 120K |
| 代理商： | EM4005B5CB2RC |
EM4005
EM4105
Copyright
2002, EM Microelectronic-Marin SA
5
www.emmicroelectronic.com
Memory Map
Header
11 bits
Identification code
64 bits + 8 trail bits
CRC
16 bits + 2 trail bits
Extension
24 bits + 3 trail bits
1…………..11 12…………….…………………83 84……………………….101 102…………………...128
Bit 1 send first
National code
38 bits + 4 trail bits
Country
10 bits + 1 trail bit
Data
Bl
oc
k
An
im
al
Reserved code
14 bits + 3 trail bits
LSBs of each registers are sent first
64 bit pattern identification ISO 11’784
128 bit pattern identification ISO 11’785
Fig. 6
Memory organisation
The structure of the 128 bits is as follows :
The header is sent first and is used to identify the start of
the sequence. It is composed of 11 bits having a bit
pattern
which
is
unique
in
the
data
stream.
00000000001
The header is followed by the Identification code which
is composed of 64 bits organised in 8 blocks of 8 bits.
Each block of 8 bits is trailed by a control bit set to logic
"1" to prevent that the header is reproduced in the data.
Bit 64 is transmitted first.
Bit 1 is a flag for animal "1" or non-animal "0" application.
Bits 2-15 are a reserved code for future use.
Bit 16 is a flag for additional data block "1" or no additional
data block "0".
Bits 17-26 ISO 3166 Numeric country code
Bits 27-64 National identification code
The next two 8 bit blocks contain the 16 CRC-CCITT error
detection bits. LSB is transmitted first, and the 2 block are
trailed with with a binary "1".
The data stream with 3 blocks of 8 bits trailed with a
logical "1" representing the extension bits. The extension
bits are planned for future extension in which for instance
information from sensors or contents of trailing pages may
be stored. In the current version the standard coding will
be 000000001 000000001 000000001 and the flag bit 16
of the identification code "0".
Resonance Capacitor
The Resonance Capacitor is integrated, and its value is
typically 75 pF.
Resonnance capacitor versus temperature
99.6
99.8
100
100.2
100.4
100.6
100.8
101
-50
-25
0
25
50
75
100
Top [°C]
Re
sonna
nc
ec
ap
ac
it
o
r[
%
]
Fig. 7
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