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參數(shù)資料
| 型號(hào)： | EM4102B6WP11E |
| 廠商： | EM Microelectronic |
| 英文描述： | Read Only Contactless Identification Device |
| 中文描述： | 只讀非接觸識(shí)別裝置 |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大?。?/td> | 142K |
| 代理商： | EM4102B6WP11E |
R
EM4102
Block Diagram
Copyright 2005, EM Microelectronic-Marin SA
4
www.emmicroelectronic.com
CLOCK
EXTRACTOR
FULL WAVE
RECTIFIER
DATA
MODULATOR
SEQUENCER
DATA
ENCODER
MEMORY
ARRAY
Logic
Clock
Serial
Data Out
Modulation
Control
Cress
COIL1
COIL2
AC1
AC2
+
-
Csup
VDD
VSS
Fig. 5
Functional Description
General
The EM4102 is supplied by means of an electromagnetic
field induced on the attached coil. The AC voltage is
rectified in order to provide a DC internal supply voltage.
When the last bit is sent, the chip will continue with the
first bit until the power goes off.
Full Wave Rectifier
The AC input induced in the external coil by an incident
magnetic field is rectified by a Graetz bridge. The bridge
will limit the internal DC voltage to avoid malfunction in
strong fields.
Clock Extractor
One of the coil terminals (COIL1) is used to generate the
master clock for the logic function. The output of the clock
extractor drives a sequencer.
Sequencer
The sequencer provides all necessary signals to address
the memory array and to encode the serial data out.
Three mask programmed encoding versions of logic are
available. These three encoding types are Manchester,
biphase and PSK. The bit rate for the first and the second
type can be 64 or 32 periods of the field frequency. For
the PSK version, the bit rate is 16.
The sequencer receives its clock from the COIL1 clock
extractor and generates every internal signal controlling
the memory and the data encoder logic.
Data Modulator
The data modulator is controlled by the signal Modulation
Control in order to induce a high current in the coil. The
coil 2 transistor drives this high current. This will affect the
magnetic field according to the data stored in the memory
array.
Memory Array for Manchester & Bi-Phase encoding
ICs
The EM4102 contains 64 bits divided in five groups of
information. 9 bits are used for the header, 10 row parity
bits (P0-P9), 4 column parity bits (PC0-PC3), 40 data bits
(D00-D93), and 1 stop bit set to logic 0.
1
1
1
1
1
1
8 version bits or
D00
D01 D02 D03 P0
customer ID
D10
D11 D12 D13 P1
D20
D21 D22 D23 P2
32 data bits
D30
D31 D32 D33 P3
D40
D41 D42 D43 P4
D50
D51 D52 D53 P5
D60
D61 D62 D63 P6
D70
D71 D72 D73 P7
D80
D81 D82 D83 P8
D90
D91 D92 D93 P9 10 line parity
PC0
PC1 PC2 PC3 S0 bits
4 column parity bits
1
1
1
9 header bits
The header is composed of the 9 first bits which are all
programmed to "1". Due to the data and parity
organisation, this sequence cannot be reproduced in the
data string. The header is followed by 10 groups of 4 data
bits allowing 100 billion combinations and 1 even row
parity bit. Then, the last group consists of 4 event column
parity bits without row parity bit. S0 is a stop bit which is
written to "0"
Bits D00 to D03 and bits D10 to D13 are customer
specific identification.
These 64 bits are outputted serially in order to control the
modulator. When the 64 bits data string is outputted, the
output sequence is repeated continuously until power
goes off.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EM4102B6WP7 | Read Only Contactless Identification Device |
| EM4102B6WP7E | Read Only Contactless Identification Device |
| EM4102B6WS11 | Read Only Contactless Identification Device |
| EM4102B6WS11E | Read Only Contactless Identification Device |
| EM4102B6WS7 | Read Only Contactless Identification Device |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EM4102B6WP7 | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read Only Contactless Identification Device |
| EM4102B6WP7E | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read Only Contactless Identification Device |
| EM4102B6WS11 | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read Only Contactless Identification Device |
| EM4102B6WS11E | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read Only Contactless Identification Device |
| EM4102B6WS7 | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read Only Contactless Identification Device |
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