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參數(shù)資料
| 型號： | EM4069A6CI2LC |
| 英文描述： | ACPI Regulator/Controller for Dual Channel DDR Memory Systems; Temperature Range: 0°C to 70°C; Package: 28-QFN T&R |
| 中文描述： | 模擬雜項 |
| 文件頁數(shù)： | 13/15頁 |
| 文件大?。?/td> | 169K |
| 代理商： | EM4069A6CI2LC |
EM4069
EM4169
Copyright
2002, EM Microelectronic-Marin SA
7
www.emmicroelectronic.com
ROM organization
The ROM is composed of 64 bits divided in a 9-bit header, 10 nibbles of 4 data bits and 1 row even parity bit, 4 column even
parity bits, and 1 stop bit. The Read ROM command will output the contents of the ROM, starting with bit-0. When bit-64 is
output, the sequence continues with bit-0.
Data in ROM is written by laser programming during manufacturing to form a unique identification code.
Figure below presents the ROM data structure. Bits P0 to P9 are row parity bits and bits PC0 to PC3 are column parity bits.
Parity is even so that a 9 bits set to logic one header can not be reproduced in a data stream.
Bit 0
111111111
Bit 8
Header
Bit 9
D00
D01
D02
D03
P0
Bit 13
8 bits customer ID
Bit 14
D10
D11
D12
D13
P1
Bit 18
Bit 19
D20
D21
D22
D23
P2
Bit 23
Bit 24
D30
D31
D32
D33
P3
Bit 28
Bit 29
D40
D41
D42
D43
P4
Bit 33
Unique
Bit 34
D50
D51
D52
D53
P5
Bit 38
device
Bit 39
D60
D61
D62
D63
P6
Bit 43
serial
Bit 44
D70
D71
D72
D73
P7
Bit 48
number
Bit 49
D80
D81
D82
D83
P8
Bit 53
Bit 54
D90
D91
D92
D93
P9
Bit 58
Bit 59
PC0
PC1
PC2
PC3
0
Bit 63
Column parity bits
Fig. 8
Customer ID for all standard versions is 01 hex.
Command description
The EM4069 operates in different modes. The default following a Power on Reset is Read EEPROM mode, and by means of
different commands, the circuit can switch to the following modes :
read access to ROM
write access to 16 bits of EEPROM
write access to configuration word
read access to configuration word
The reader has to generate the commands, which have to be decoded by the EM4069.
Command
Short name
Bit pattern
Function
Command 1
rst
1010 0000
Reset and return to EEPROM read
Command 2
rROM
1010 0101
READ 64 bit ROM
Command 3
wr
1100.add.data.crc
WRITE 16 bit EEPROM word
Command 4
wcw
1101 0011.prot.crc
WRITE configuration word
Command 5
rcw
1111 0000
Read configuration word
Commands rst, rROM and rcw affect readout. An eight-bit pattern has to be sent to execute them. Write commands are longer
since associated address and data have to be sent. The leftmost bit in command bit pattern is transferred first.
Command 1: Reset command
During activation of the transponder a return to default
mode is possible from any mode with the reset command.
Command 2 : Read out of ROM 64 Bits
After activation of command 2, the 64 bit ROM data will be
read out cyclically. This mode will be active until power
down or reset command.
Command 3 : Write 16 Bit EEPROM word
After activation of command 3, a 16-bit EEPROM word can
be written. Data transmission will be secured by CRC
check information, which has to be calculated by the reader
and which will be checked by the EM4069.
Command 4 : Write configuration word
Command 4 has the same structure as command 3. The
16-bit configuration word is written by this command. A
partial locking (write inhibit) of the 128 bit memory is
possible in blocks of 16 bits (16 bit word becomes read-
only).
The bits of configuration word are OTP (one time
programmable) so once a certain bit in configuration word
is set it cannot be reset.
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| EM4069A6WP11 | 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 |
| EM4069A6WP11E | 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 |
| EM4069A6WP7 | 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 |
| EM4069A6WP7E | 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 |
| EM4069A6WS11 | 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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