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參數(shù)資料
| 型號： | EM4056B6CB2RC |
| 英文描述： | ACPI Regulator/Controller for Dual Channel DDR Memory Systems; Temperature Range: 0°C to 70°C; Package: 28-QFN |
| 中文描述： | 模擬雜項 |
| 文件頁數(shù)： | 9/14頁 |
| 文件大小： | 108K |
| 代理商： | EM4056B6CB2RC |
EM4056
Copyright
2002, EM Microelectronic-Marin SA
4
www.emmicroelectronic.com
Timing Characteristics
Parameter
Symbol
Conditions
Typ
Units
Modulation duration
ON OFF ON
Tb0
Bit 0
26
8
Emission Bit Period
Tb1
Bit 1
36
8
RF periods
Tab
Start bit
8
16
8
Reception Bit Period
Tbit
64
RF periods
Reception Bit Period Arbitration
Tbitarb
32
RF periods
Select processing time
Tsp
190
RF periods
Read processing time
Trp
126
RF periods
Write processing time
Twp
3134
RF periods
Arb1 processing time
Ta1p
62
RF periods
Arb2 processing time
Ta2p
10
RF periods
Arbitration format duration
Tarb
115
Read Rom format duration
Tro
24.5
Select format duration
Ts
19.1
Prot format duration
Tp
32.2
Read format duration
Tr
20.3
Write format duration
Tw
36.6
Comp format duration
Tc
16.6
Login format duration
Tl
35.1
ms
EEPROM Write duration
Tee
VDD = 3V
20.0
Functional Description
General
The EM4056 has a read enable bit (RdEn) realised with a flip-flop cell. If the RdEn bit is set to 0 , the transponder is
always allowed to answer otherwise it answers only on special commands.
At power on, the default value of the RdEn bit is 0. Therefore, after switching the field on, the RdEn bit of all known tags may
be set by the reader in order to separate them in two groups.
The block check sequence uses a 8 bits CRC which is the same polynom for all CRC blocks.
In addition, the CRC block from the EM4056 to the reader is sent in the format of the BitVal frame (see arbitration mode) to
increase the error detection rate in the reader.
Memory organisation
Config Word definition + Laser Rom area definition
Fig. 4
The Read Protected and the Write Protected bit are OTP bit. Once written to one,
it is definitively locked. No possibility to erase them to zero.
Address
Bit
Bit 0 is defined as the first bit output Bit
17
0
1
0000000
0000010
1111110
1111111
LASER ROM (3 * 18)
EEPROM (123 *18)
Configuration Word
PIN Word
W
ri
te
Pr
ot
R
ead
Pr
ot
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相關(guān)代理商/技術(shù)參數(shù) |
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| EM4056B6CI2LC | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:2KBIT Read/Write with ANTICOLLISION Contactless Identification Device |
| EM4056B6WP11 | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:2KBIT Read/Write with ANTICOLLISION Contactless Identification Device |
| EM4056B6WW11E | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:2KBIT Read/Write with ANTICOLLISION Contactless Identification Device |
| EM4069 | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:128 bit Read/Write Contactless Identification Device with OTP function |
| EM4069A5CB2RB | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:128 bit Read/Write Contactless Identification Device with OTP function |
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