參數(shù)資料
型號: EM4169A5WS7
廠商: EM Microelectronic
英文描述: 128 bit Read/Write Contactless Identification Device with OTP function
中文描述: 128位讀/寫非接觸識別裝置的OTP功能
文件頁數(shù): 3/15頁
文件大小: 270K
代理商: EM4169A5WS7
EM4069
EM4169
Copyright
2003, EM Microelectronic-Marin SA
3
www.emmicroelectronic.com
Timing Characteristics
V
DD
= 3.0 V, V
SS
= 0 V, f
COIL1
= 125 kHz square wave, V
COIL1
= 5V, T
OP
= 25°C, unless otherwise specified
Parameter
Option : 64 RF periods per bit
Read bit period
EEPROM write time
Synchronization pattern phase 1
Synchronization pattern phase 2
Synchronization pattern phase 3
Symbol
Condition
Min.
Typ.
Max.
Unit
t
RDB
t
Wee
t
S1
t
S2
t
S3
64
RF periods
ms
ms
ms
ms
20
4.1
1.5
1.5
5.0
2.0
4.0
Option : 32 RF periods per bit
Read bit period
EEPROM write time
Synchronization pattern phase 1
Synchronization pattern phase 2
Synchronization pattern phase 3
t
RDB
t
Wee
t
S1
t
S2
t
S3
32
RF periods
ms
ms
ms
ms
20
2.1
0.8
0.8
2.5
1.0
2.0
RF periods represent periods of the carrier frequency emitted by the transceiver unit.
See figure 12 for Synchronization pattern phases.
Due to amplitude modulation of the coil-signal, the clock-extractor may miss clocks or add spurious clocks close to
the edges of the RF-envelope. This desynchronization will not be larger than
±
3 clocks per bit and must be taken into
account when developing reader software.
Block Diagram
Modulator
Control
Logic
EEPROM
Clock
Extractor
Sequencer
Data
Extractor
C
R
C
buf
VDD
VSS
Power
Supply
Reset
Power on
Reset
COIL1
VSS
ROM
Fig. 3
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